Science.gov

Sample records for steel wire rods

  1. 77 FR 3231 - Certain Stainless Steel Wire Rods From India: Continuation of Antidumping Duty Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-23

    ...Administration [A-533-808] Certain Stainless Steel Wire Rods From India: Continuation...antidumping duty order on certain stainless steel wire rods from India would likely...antidumping duty order on certain stainless steel wire rods (``wire...

  2. 77 FR 59892 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Affirmative Final Determination of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-01

    ...Administration [A-201-830] Carbon and Certain Alloy Steel Wire Rod From Mexico: Affirmative...1\\ See Carbon and Certain Alloy Steel Wire Rod from Mexico: Affirmative...2\\ See Carbon and Certain Alloy Steel Wire Rod from Mexico:...

  3. 75 FR 21658 - Carbon and Certain Alloy Steel Wire Rod From Trinidad and Tobago

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-26

    ...731-TA-961 (Final) (Second Remand)] Carbon and Certain Alloy Steel Wire Rod From Trinidad and Tobago AGENCY: United States...Investigation No. 731-TA-961 concerning carbon and certain alloy steel wire rod (``wire rod'') from Trinidad and...

  4. 78 FR 33103 - Carbon and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-03

    ...Carbon and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad...steel wire rod (``wire rod'') from Brazil and the antidumping duty orders on wire rod from Brazil, Indonesia, Mexico, Moldova,...

  5. 78 FR 63450 - Carbon and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-24

    ...and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad...steel wire rod (``wire rod'') from Brazil, Indonesia, Mexico, Moldova, Trinidad...antidumping duty orders on wire rod from Brazil, Indonesia, Mexico, Moldova,...

  6. 76 FR 67672 - Certain Stainless Steel Wire Rods From India: Final Results of the Expedited Sunset Review of the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-02

    ...Administration [A-533-808] Certain Stainless Steel Wire Rods From India: Final...antidumping duty order on certain stainless steel wire rods from India, pursuant...antidumping duty order on certain stainless steel wire rods from India (wire...

  7. 78 FR 76653 - Carbon and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-18

    ...Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and Tobago...certain alloy steel wire rod from Brazil, Indonesia, Mexico, Moldova, Trinidad and Tobago...certain alloy steel wire rod from Brazil, Indonesia, Mexico, Moldova, Trinidad and...

  8. 78 FR 60316 - Carbon and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-01

    ...Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad...certain alloy steel wire rod from Brazil and antidumping duty orders on carbon and certain alloy steel wire rod from Brazil, Indonesia, Mexico, Moldova,...

  9. 76 FR 38686 - Stainless Steel Wire Rod From India; Institution of a Five-Year Review Concerning the Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-01

    ...731-TA-638 (Third Review)] Stainless Steel Wire Rod From India; Institution...the Antidumping Duty Order on Stainless Steel Wire Rod From India AGENCY...the antidumping duty order on stainless steel wire rod from India would...

  10. 76 FR 64105 - Stainless Steel Wire Rod From India; Scheduling of an Expedited Five-Year Review Concerning the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-17

    ...731-TA-638 (Third Review)] Stainless Steel Wire Rod From India; Scheduling...the Antidumping Duty Order on Stainless Steel Wire Rod From India AGENCY...the antidumping duty order on stainless steel wire rod from India would...

  11. 77 FR 1504 - Stainless Steel Wire Rod From India

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-10

    ... this review on July 1, 2011 (76 FR 38686) and determined on October 4, 2011, that it would conduct an expedited review (76 FR 64105, October 17, 2011). The Commission transmitted its determination in this... Stainless Steel Wire Rod From India Determination On the basis of the record \\1\\ developed in the...

  12. 78 FR 2658 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Rescission of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-14

    ...International Trade Administration [A-201-830] Carbon and Certain Alloy Steel Wire Rod From Mexico: Rescission of Antidumping Duty...administrative review of the antidumping duty order on carbon and certain alloy steel wire rod (``wire rod'') from Mexico for the...

  13. 77 FR 66954 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-08

    ...Administration [A-201-830] Carbon and Certain Alloy Steel Wire Rod From Mexico: Preliminary...antidumping duty order on carbon and certain alloy steel wire rod (wire rod) from Mexico...subject to this order is carbon and certain alloy steel wire rod. The product is...

  14. 78 FR 28190 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Final Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-14

    ...Administration [A-201-830] Carbon and Certain Alloy Steel Wire Rod From Mexico: Final Results...antidumping duty order on carbon and certain alloy steel wire rod (wire rod) from Mexico...1\\ See Carbon and Certain Alloy Steel Wire Rod From Mexico:...

  15. 75 FR 21658 - Carbon and Certain Alloy Steel Wire Rod From Trinidad and Tobago

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-26

    ... amended, 67 FR 68036 (Nov. 8, 2002). In accordance with sections 201.16(c) and 207.3 of the Commission's... Carbon and Certain Alloy Steel Wire Rod From Trinidad and Tobago AGENCY: United States International... antidumping duty Investigation No. 731-TA-961 concerning carbon and certain alloy steel wire rod (``wire...

  16. 78 FR 60850 - Carbon and Certain Alloy Steel Wire Rod From Brazil: Final Results of the Expedited Second Sunset...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-02

    ...and Certain Alloy Steel Wire Rod From Brazil: Final Results of the Expedited Second...alloy steel wire rod (wire rod) from Brazil would be likely to lead to continuation...of the CVD order \\1\\ on wire rod from Brazil pursuant to section 751(c) of the...

  17. 77 FR 3231 - Certain Stainless Steel Wire Rods From India: Continuation of Antidumping Duty Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-23

    ... Act of 1930, as amended (the Act). See Initiation of Five- Year (``Sunset'') Review, 76 FR 38613 (July... the Antidumping Duty Order on Stainless Steel Wire Rod From India, 76 FR 38686 (July 1, 2011). \\1\\ Antidumping Duty Order: Certain Stainless Steel Wire Rods from India, 58 FR 63335 (December 1, 1993). As...

  18. 75 FR 34424 - Stainless Steel Wire Rod from Italy, Japan, the Republic of Korea, Spain, and Taiwan...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-17

    ...A-469-807, A-583-828] Stainless Steel Wire Rod from Italy, Japan...the antidumping duty orders on stainless steel wire rod (SSWR) from Italy...should the orders be revoked. See Stainless Steel Wire Rod From Italy,...

  19. 78 FR 63450 - Carbon and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-24

    ... Act. See Initiation of Five-Year (``Sunset'') Reviews, 78 FR 33063 (June 3, 2013) (``Notice of... International Trade Administration, Carbon and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico... on carbon and certain alloy steel wire rod (``wire rod'') from Brazil, Indonesia, Mexico,...

  20. High strength, low carbon, dual phase steel rods and wires and process for making same

    DOEpatents

    Thomas, Gareth (Berkeley, CA); Nakagawa, Alvin H. (Campbell, CA)

    1986-01-01

    A high strength, high ductility, low carbon, dual phase steel wire, bar or rod and process for making the same is provided. The steel wire, bar or rod is produced by cold drawing to the desired diameter in a single multipass operation a low carbon steel composition characterized by a duplex microstructure consisting essentially of a strong second phase dispersed in a soft ferrite matrix with a microstructure and morphology having sufficient cold formability to allow reductions in cross-sectional area of up to about 99.9%. Tensile strengths of at least 120 ksi to over 400 ksi may be obtained.

  1. 78 FR 60850 - Carbon and Certain Alloy Steel Wire Rod From Brazil: Final Results of the Expedited Second Sunset...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-02

    ... Alloy Steel Wire Rod from Brazil, 67 FR 55805 (August 30, 2002). \\2\\ See Initiation of Five-Year (``Sunset'') Review, 78 FR 33063 (June 3, 2013). On June 18, 2013, the Department received a notice of... International Trade Administration Carbon and Certain Alloy Steel Wire Rod From Brazil: Final Results of...

  2. 76 FR 34044 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Extension of Time Limits for the Preliminary...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-10

    ...International Trade Administration [A-201-830] Carbon and Certain Alloy Steel Wire Rod From Mexico: Extension of Time Limits for the...administrative review of the antidumping duty order on carbon and certain alloy steel wire rod from Mexico, covering the period October...

  3. 76 FR 38686 - Stainless Steel Wire Rod From India; Institution of a Five-Year Review Concerning the Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-01

    ...) (19 CFR 201.15(b)), 73 FR 24609 (May 5, 2008). This advice was developed in consultation with the... on imports of stainless steel wire rod from India (58 FR 63335). Following first five-year reviews by... duty order on imports of stainless steel wire rod from India (65 FR 47403). Following second...

  4. Effect of rolling with shear on the properties of steel 08G2S rods and wire

    NASA Astrophysics Data System (ADS)

    Pashinskaya, E. G.; Tolpa, A. A.; Myshlyaev, M. M.; Grishaev, V. V.; Zavdoveev, A. V.

    2011-11-01

    The hereditary effect of the structure of a wire rod on the structure and physicomechanical properties of the steel 08G2S wire produced by rolling with shear is studied in comparison with the wire produced according to the standard technology in OAO Metal Steel Krivoi Rog.

  5. 78 FR 2658 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Rescission of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-14

    ...; Opportunity To Request Administrative Review, 77 FR 59894 (October 1, 2012). \\2\\ See Letter from Nucor... Countervailing Duty Administrative Reviews and Request for Revocation in Part, 77 FR 71575 (December 3, 2012). \\4... International Trade Administration Carbon and Certain Alloy Steel Wire Rod From Mexico: Rescission...

  6. 76 FR 78882 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Affirmative Preliminary Determination of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-20

    ... FR 65945 (October 29, 2002) (Wire Rod Order). DATES: Effective Date: December 20, 2011. FOR FURTHER... Order, 76 FR 33218 (June 8, 2011) (Initiation). On July 22, 2011, Deacero submitted its response to the... Steel Plate From Canada, 66 FR 7617, 7618 (January 24, 2001)) (Canadian Plate), and accompanying...

  7. Mechanical behavior of ultrahigh strength ultrahigh carbon steel wire and rod

    SciTech Connect

    Lesuer, D.R.; Syn, C.K.; Sberby, O.D.; Whittenherger, W.D.

    1997-07-22

    Ultrahigh-carbon steels (UHCSS) can achieve very high strengths in wire or rod form. These high strengths result from the mechanical work introduced during wire and rod processing. These strengths have been observed to increase with carbon content. In wire form, tensile strengths approaching 6000 MPa are predicted for UHCS containing 1. 8%C. In this paper, we will discuss the influence of processing (including rapid transformation during wire patenting) and micros ct- ure on the mechanical behavior of UHCS wire. The tensile properties of as- extruded rods are described as a function of extrusion temperature and composition. For spheroidized steels, yield and ultimate tensile strength are a function of grain size, interparticle spacing and particle size. For pearlitic steels, yield and ultimate strength were found to be functions of colony size, carbide size and plate spacing and orientation. Alloying additions (such as C, Cr, Si, Al and Co) can influence the effect of processing on these microstructural features. For spheroidized steels, fracture was found to be a function of the size of coarse carbides and of composition.

  8. 76 FR 67407 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Notice of Preliminary Results of Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-01

    ... Alloy Steel Wire Rod from Mexico, (76 FR 45509 (July 29, 2011)). We preliminarily determine that, during..., Indonesia, Mexico, Moldova, Trinidad and Tobago, and Ukraine, 67 FR 65945 (October 29, 2002) (Wire Rod... FR 60733 (October 1, 2010). On October 29, 2010, in accordance with 19 CFR 351.213(b), the...

  9. 77 FR 66954 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-08

    ... of Sales at Less Than Fair Value: Carbon and Certain Alloy Steel Wire Rod From Mexico, 67 FR 55800..., Trinidad and Tobago, and Ukraine, 67 FR 65945 (October 29, 2002), remains dispositive. On October 1, 2012... Rod from Mexico: Affirmative Final Determination of Circumvention of the Antidumping Duty Order, 77...

  10. Controlled rolling process for dual phase steels and application to rod, wire, sheet and other shapes

    DOEpatents

    Thomas, G.; Ahn, J.H.; Kim, N.J.

    1986-10-28

    An improved, energy efficient, hot rolling method for direct production of cold formable dual-phase steel is provided. The steel is heated to completely austenitize it and then continuously hot rolled and cooled down into the ferrite-austenite two phase region to a temperature which is just below the effective Ar[sub 3] temperature. The hot rolled steel is then rapidly quenched to provide an alloy containing strong, tough lath martensite (fibers) in a ductile soft ferrite matrix. The method is particularly useful for providing rods in which form the alloy is capable of being drawn into high strength wire or the like in a cold drawing operation without any intermediate annealing or patenting, and has excellent strength, ductility and fatigue characteristics. 3 figs.

  11. 75 FR 34424 - Stainless Steel Wire Rod from Italy, Japan, the Republic of Korea, Spain, and Taiwan...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-17

    ... Initiation of Five- year (``Sunset'') Review, 74 FR 31412 (July 1, 2009). As a result of its reviews, the... Expedited Sunset Reviews of the Antidumping Duty Orders, 74 FR 56179 (Oct. 30, 2009). On May 14, 2010, the... foreseeable future. See Stainless Steel Wire Rod From Italy, Japan, Korea, Spain, and Taiwan, 75 FR...

  12. 76 FR 67672 - Certain Stainless Steel Wire Rods From India: Final Results of the Expedited Sunset Review of the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-02

    ... Five-Year (``Sunset'') Review, 76 FR 38613 (July 1, 2011) (Notice of Initiation). The Department has...\\ Antidumping Duty Order: Certain Stainless Steel Wire Rods from India, 58 FR 63335 (December 1, 1993). The... chromium, with or without other elements. These products are only manufactured by hot-rolling and...

  13. 78 FR 28190 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Final Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-14

    ... Certain Alloy Steel Wire Rod From Mexico, 67 FR 55800 (August 30, 2002). Notification to Importers This... Antidumping Duty Administrative Review; 2010- 2011, 77 FR 66954 (November 8, 2012) (Preliminary Results... Ukraine, 67 FR 65945 (October 29, 2002), remains dispositive. On October 1, 2012, the Department...

  14. 76 FR 16607 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Notice of Partial Rescission of Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-24

    ... From the Federal Register Online via the Government Printing Office DEPARTMENT OF COMMERCE International Trade Administration Carbon and Certain Alloy Steel Wire Rod From Mexico: Notice of Partial Rescission of Antidumping Duty Administrative Review AGENCY: Import Administration, International Trade Administration, Department of Commerce....

  15. 77 FR 13545 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Notice of Final Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-07

    ... Antidumping Duty Administrative Review 76 FR 67407 (November 1, 2011) (Preliminary Results). \\2\\ We determined... Changed Circumstances Review: Carbon and Certain Alloy Steel Wire Rod from Mexico, 76 FR 45509 (July 29... Countervailing Duty Proceedings: Assessment of Antidumping Duties, 68 FR 23954 (May 6, 2003) (Assessment...

  16. 78 FR 76653 - Carbon and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-18

    ... reviews were such that full reviews pursuant to section 751(c)(5) of the Act should proceed (78 FR 60316... Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and Tobago, and Ukraine... from Brazil, Indonesia, Mexico, Moldova, Trinidad and Tobago, and Ukraine. AGENCY: United...

  17. 78 FR 60316 - Carbon and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-01

    ... both that the domestic interested party group response to its notice of institution (78 FR 33103, June... Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and Tobago, and Ukraine..., Indonesia, Mexico, Moldova, Trinidad and Tobago, and Ukraine would be likely to lead to continuation...

  18. Real-time defect detection of steel wire rods using wavelet filters optimized by univariate dynamic encoding algorithm for searches.

    PubMed

    Yun, Jong Pil; Jeon, Yong-Ju; Choi, Doo-chul; Kim, Sang Woo

    2012-05-01

    We propose a new defect detection algorithm for scale-covered steel wire rods. The algorithm incorporates an adaptive wavelet filter that is designed on the basis of lattice parameterization of orthogonal wavelet bases. This approach offers the opportunity to design orthogonal wavelet filters via optimization methods. To improve the performance and the flexibility of wavelet design, we propose the use of the undecimated discrete wavelet transform, and separate design of column and row wavelet filters but with a common cost function. The coefficients of the wavelet filters are optimized by the so-called univariate dynamic encoding algorithm for searches (uDEAS), which searches the minimum value of a cost function designed to maximize the energy difference between defects and background noise. Moreover, for improved detection accuracy, we propose an enhanced double-threshold method. Experimental results for steel wire rod surface images obtained from actual steel production lines show that the proposed algorithm is effective. PMID:22561939

  19. Notch toughness in hot-rolled low carbon steel wire rod

    SciTech Connect

    Baarman, M.H.

    1999-12-01

    Charpy V-notch toughness has been investigated in four hot-rolled, low carbon steels with different grain sizes and carbon contents between 0.019 and 0.057%. The raw material was wire rod designed for drawing and possible subsequent cold heading operations and manufactured from continuous cast billets. In this study, the influence of microstructure, mechanical properties, and alloying elements on the ductile-brittle transition behavior has been assessed. A particular emphasis has been given to the influence of boron with contents up to 0.0097%. As a result, transition temperatures between {minus}29 and +50 C explicated by the material properties have been obtained. The examination also shows that the transition temperature raises with circa 0.5 C for each added ppm boron most likely as a consequence of an enlargement of the ferrite grain size and the reduction of yield and tensile strength. The highest upper shelf energy and lowest transition temperature can be observed in a steel without boron additions and with maximum contents of carbon, silicon, and manganese.

  20. 76 FR 78882 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Affirmative Preliminary Determination of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-20

    ...ball bearing steel; and (e) concrete reinforcing bars and rods...0.08 percent or more of sulfur, more than 0.04 percent...aggregate, of phosphorus and sulfur, (4) 0.006 percent or...aggregate, of phosphorus and sulfur, (4) 0.008 percent...

  1. Metacarpal fracture fixation with absorbable polyglycolide rods and stainless steel K wires: a biomechanical comparison.

    PubMed

    Maruyama, T; Saha, S; Mongiano, D O; Mudge, K

    1996-01-01

    Self-reinforced polyglycolide (SR-PGA) rods have been used widely for fracture fixation as an alternative to metallic implants. However, because of its insufficient strength and strength retention, the use of SR-PGA has been restricted to fractures or osteotomies of low stress bearing cancellous bone. To investigate its usefulness in fixing the fractures of cortical bone, the mechanical strength of a human metacarpal fracture fixed with SR-PGA rods was evaluated. The surgical constructs were immersed in buffered saline solution and maintained at body temperature (37 degrees C). The mean initial bending stiffness of the specimens fixed with the SR-PGA rods was 61% of that of the specimens fixed with Kirschner wires. The bending stiffness of the specimens fixed with the SR-PGA rods decreased gradually, and most of the specimens lost their mechanical stability when immersed for 4 weeks. When SR-PGA rods are used to fix the fracture of human cortical bone, such as diaphyseal fracture of the metacarpal bone, it should be protected by additional means. PMID:8734068

  2. 78 FR 33103 - Carbon and Certain Alloy Steel Wire Rod From Brazil, Indonesia, Mexico, Moldova, Trinidad and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-03

    ... (``Commerce'') issued a countervailing duty order on imports of wire rod from Brazil (67 FR 64871). On October..., Mexico, Moldova, Trinidad and Tobago, and Ukraine (67 FR 65944-65947). Following the five-year reviews by..., Mexico, Moldova, Trinidad and Tobago, and Ukraine (73 FR 44218). The Commission is now conducting...

  3. 76 FR 33218 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Initiation of Anti-Circumvention Inquiry of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-08

    ... and Tobago, and Ukraine, 67 FR 65945 (October 29, 2002) (Wire Rod Order). Alternatively, petitioners... Determination of Circumvention of the Antidumping Duty Order, 71 FR 32033, 32037 (June 2, 2006) (Wax Candles... Determination of Circumvention of the Anti- Dumping Duty Order, 71 FR 59076-59076 (October 6, 2006) (Wax...

  4. 75 FR 8650 - Carbon and Certain Alloy Steel Wire Rod from Trinidad and Tobago; Final Results of Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-25

    ...ball bearing steel; and (e) concrete reinforcing bars and rods...0.08 percent or more of sulfur, more than 0.04 percent...aggregate, of phosphorus and sulfur, (4) 0.006 percent or...aggregate, of phosphorus and sulfur, (4) 0.008 percent...

  5. 76 FR 67407 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Notice of Preliminary Results of Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-01

    ...ball bearing steel; and (e) concrete reinforcing bars and rods...0.08 percent or more of sulfur, more than 0.04 percent...aggregate, of phosphorus and sulfur, (4) 0.006 percent or...aggregate, of phosphorus and sulfur, (4) 0.008 percent...

  6. 77 FR 13545 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Notice of Final Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-07

    ...ball bearing steel; and (e) concrete reinforcing bars and rods...0.08 percent or more of sulfur, more than 0.04 percent...aggregate, of phosphorus and sulfur, (4) 0.006 percent or...aggregate, of phosphorus and sulfur, (4) 0.008 percent...

  7. 76 FR 33218 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Initiation of Anti-Circumvention Inquiry of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-08

    ...ball bearing steel; and (e) concrete reinforcing bars and rods...0.08 percent or more of sulfur, more than 0.04 percent...aggregate, of phosphorus and sulfur, (4) 0.006 percent or...aggregate, of phosphorus and sulfur, (4) 0.008 percent...

  8. 76 FR 16607 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Notice of Partial Rescission of Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-24

    ...ball bearing steel; and (e) concrete reinforcing bars and rods...0.08 percent or more of sulfur, more than 0.04 percent...aggregate, of phosphorus and sulfur, (4) 0.006 percent or...aggregate, of phosphorus and sulfur, (4) 0.008 percent...

  9. 78 FR 76815 - Steel Threaded Rod From India: Preliminary Affirmative Countervailing Duty Determination and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-19

    ...rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid...addition, the steel threaded rod, bar, or studs subject to this investigation are non-headed...rod is certain threaded rod, bar, or studs, of carbon quality steel, having a...

  10. 75 FR 36678 - Prestressed Concrete Steel Wire Strand From China; Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-28

    ...731-TA-1160 (Final)] Prestressed Concrete Steel Wire Strand From China; Determinations...of imports from China of prestressed concrete steel wire strand (PC strand), provided...June 2010), entitled Prestressed Concrete Steel Wire Strand from China:...

  11. 75 FR 37382 - Notice of Antidumping Duty Order: Prestressed Concrete Steel Wire Strand from the People's...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-29

    ...Antidumping Duty Order: Prestressed Concrete Steel Wire Strand from the People's...antidumping duty order on prestressed concrete steel wire strand (``PC strand...a U.S. industry. See Prestressed Concrete Steel Wire Strand from China...

  12. 78 FR 12718 - Certain Steel Threaded Rod From the People's Republic of China: Affirmative Final Determination...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-25

    ...rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid...addition, the steel threaded rod, bar, or studs subject to the order are non-headed and...order are steel threaded rod, bar, or studs, in which: (1) Iron...

  13. 78 FR 44526 - Steel Threaded Rod From India and Thailand: Initiation of Antidumping Duty Investigations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-24

    ...rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid...addition, the steel threaded rod, bar, or studs subject to these investigations are nonheaded...investigations are steel threaded rod, bar, or studs, in which: (1) Iron...

  14. 78 FR 44532 - Steel Threaded Rod From India: Initiation of Countervailing Duty Investigation

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-24

    ...rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid...addition, the steel threaded rod, bar, or studs subject to this investigation are nonheaded...investigation are steel threaded rod, bar, or studs, in which: (1) iron...

  15. 76 FR 29266 - Galvanized Steel Wire From China and Mexico

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-20

    ... notice in the Federal Register of April 7, 2011 (76 FR 19382). The conference was held in Washington, DC... Galvanized Steel Wire From China and Mexico Determinations On the basis of the record \\1\\ developed in the... reason of imports from China and Mexico of galvanized steel wire, provided for in subheading...

  16. 75 FR 4104 - Prestressed Concrete Steel Wire Strand From China

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-26

    ...731-TA-1160 (Final)] Prestressed Concrete Steel Wire Strand From China AGENCY...less-than-fair-value imports from China of prestressed concrete steel wire strand, provided for in subheading...which is suitable for use in prestressed concrete (both pre-tensioned and post-...

  17. 77 FR 72884 - Steel Wire Garment Hangers From Taiwan

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-06

    ... Register on August 20, 2012 (77 FR 50160) and on August 22, 2012 (77 FR 50713, corrected). The hearing was... Steel Wire Garment Hangers From Taiwan Determination On the basis of the record \\1\\ developed in the... United States is materially injured by reason of imports of steel wire garment hangers from...

  18. 78 FR 7452 - Steel Wire Garment Hangers From Vietnam; Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-01

    ... Register on August 20, 2012 (77 FR 50160) and on August 22, 2012 (77 FR 50713, corrected). The hearing was... COMMISSION Steel Wire Garment Hangers From Vietnam; Determinations On the basis of the record \\1\\ developed... imports of steel wire garment hangers from Vietnam, provided for in subheading 7326.20.00 of...

  19. 77 FR 28404 - Galvanized Steel Wire From China and Mexico

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-14

    ... notice in the Federal Register on November 25, 2011 (76 FR 72721). The hearing was held in Washington, DC... COMMISSION Galvanized Steel Wire From China and Mexico Determinations On the basis of the record \\1... retarded, by reason of imports from China of galvanized steel wire, provided for in subheadings...

  20. Nondestructive quantitative stress characterization of wire rope and steel cables

    NASA Astrophysics Data System (ADS)

    Brauss, Michael E.; Pineault, James A.; Belassel, M.; Teodoropol, Stefan I.

    1998-03-01

    This paper describes a new approach to nondestructive and quantitative characterization of residual and applied stress (absolute stress) on wire rope and steel cable. Examples are given from both field work as well as laboratory tests, including stress characterization of post-tensioning cables, bridge suspension cables, wire rope and thin strand steel wire. The approach is based on x-ray diffraction techniques. A detailed description of the results and the methodologies used to obtain them are provided.

  1. Characterisation of severely deformed austenitic stainless steel wire

    E-print Network

    Cambridge, University of

    Characterisation of severely deformed austenitic stainless steel wire H. S. Wang1 , J. R. Yang1 of 316L austenitic stainless steel has been examined using TEM and X-ray diffraction. The deformation: Martensite, Mechanical Stabilization, Interface structure, Stainless steel Introduction Textiles woven using

  2. 78 FR 40170 - Certain Steel Threaded Rod From India and Thailand; Institution of Antidumping and Countervailing...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-03

    ...Preliminary)] Certain Steel Threaded Rod From India and Thailand; Institution of Antidumping and Countervailing Duty Investigations...is materially retarded, by reason of imports from India and Thailand of certain steel threaded rod, provided for primarily in...

  3. 78 FR 75545 - Prestressed Concrete Steel Rail Tie Wire From the People's Republic of China: Preliminary...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-12

    ...Administration [A-570-990] Prestressed Concrete Steel Rail Tie Wire From the People's...preliminarily determines that prestressed concrete steel rail tie wire (``PC tie wire...suitable for use as prestressed tendons in concrete railroad ties (``PC tie...

  4. 75 FR 8113 - Prestressed Concrete Steel Wire Strand From China

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-23

    ...INTERNATIONAL TRADE COMMISSION [Investigation Nos. 701-TA-464 and 731-TA-1160 (Final)] Prestressed Concrete Steel Wire Strand From China AGENCY: United States International Trade Commission. ACTION: Revised schedule for the...

  5. Aluminum/steel wire composite plates exhibit high tensile strength

    NASA Technical Reports Server (NTRS)

    1966-01-01

    Composite plate of fine steel wires imbedded in an aluminum alloy matrix results in a lightweight material with high tensile strength. Plates have been prepared having the strength of titanium with only 85 percent of its density.

  6. 75 FR 28560 - Prestressed Concrete Steel Wire Strand From the People's Republic of China: Final Determination...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-21

    ...Administration [A-570-945] Prestressed Concrete Steel Wire Strand From the People's...antidumping investigation of prestressed concrete steel strand (``PC strand'') from...1\\ See Prestressed Concrete Steel Wire Strand From the...

  7. 78 FR 79670 - Steel Threaded Rod From Thailand: Preliminary Determination of Sales at Less Than Fair Value and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-31

    ...rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid...addition, the steel threaded rod, bar, or studs subject to this investigation are non-headed...rod is certain threaded rod, bar, or studs, of carbon quality steel, having a...

  8. Application Of Numerical Modelling To Ribbed Wire Rod Dimensions Precision Increase

    NASA Astrophysics Data System (ADS)

    Szota, Piotr; Mróz, Sebastian; Stefanik, Andrzej

    2007-05-01

    The paper presents the results of theoretical and experimental investigations of the process of rolling square ribbed wire rod designed for concrete reinforcement. Numerical modelling of the process of rolling in the finishing and pre-finishing grooves was carried out using the Forge2005® software. In the investigation, particular consideration was given to the analysis of the effect of pre-finished band shape on the formation of ribs on the finished wire rod in the finishing groove. The results of theoretical studies were verified in experimental tests, which were carried out in a wire rolling mill.

  9. 10. View of Riverside Bridge with Steel Reinforcing Rods in ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. View of Riverside Bridge with Steel Reinforcing Rods in Place and with 'Tower for Concrete' in the Background. The function of the 'tower for concrete' is uncertain, but may have to do with the transport of concrete from the point of mixing to the point of use (suggestion by NDOT Bridge Section personnel, February 1990). Original snapshot taken July, 1920. - Riverside Bridge, Spanning Truckee River at Booth Street, Reno, Washoe County, NV

  10. 78 FR 12718 - Certain Steel Threaded Rod From the People's Republic of China: Affirmative Final Determination...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-25

    ...: Affirmative Preliminary Determination of Circumvention of the Antidumping Duty Order, 77 FR 71776 (December 4... Duty Order, 74 FR 17154 (April 14, 2009). Scope of the Order The merchandise covered by the order is steel threaded rod. Steel threaded rod is certain threaded rod, bar, or studs, of carbon quality...

  11. Processing and mechanical behavior of hypereutectoid steel wires

    SciTech Connect

    Lesuer, D.R.; Syn, C.K.; Sherby, O.D.; Kim, D.K.

    1996-06-25

    Hypereutectoid steels have the potential for dramatically increasing the strength of wire used in tire cord and in other high strength wire applications. The basis for this possible breakthrough is the elimination of a brittle proeutectoid network that can form along grain boundaries if appropriate processing procedures and alloy additions are used. A review is made of work done by Japanese and other researchers on eutectoid and mildly hypereutectoid wires. A linear extrapolation of the tensile strength of fine wires predicts higher strengths at higher carbon contents. The influence of processing, alloy additions and carbon content in optimizing the strength, ductility and fracture behavior of hypereutectoid steels is presented. It is proposed that the tensile strength of pearlitic wires is dictated by the fracture strength of the carbide lamella at grain boundary locations in the carbide. Methods to improve the strength of carbide grain boundaries and to decrease the carbide plate thickness will contribute to enhancing the ultrahigh strength obtainable in hypereutectoid steel wires. 23 refs., 13 figs., 1 tab.

  12. 77 FR 473 - Certain Steel Threaded Rod From the People's Republic of China: Initiation of Anti-Circumvention...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-05

    ...rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid...addition, the steel threaded rod, bar, or studs subject to the order are non-headed and...order are steel threaded rod, bar, or studs, in which: (1) Iron...

  13. 77 FR 27022 - Certain Steel Threaded Rod From the People's Republic of China: Preliminary Results of the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-08

    ...rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid...addition, the steel threaded rod, bar, or studs subject to the order are non-headed and...order are steel threaded rod, bar, or studs, in which: (1) Iron...

  14. 76 FR 68400 - Certain Steel Threaded Rod From the People's Republic of China: Final Results and Final Partial...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-04

    ...rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid...addition, the steel threaded rod, bar, or studs subject to the order are non-headed and...order are steel threaded rod, bar, or studs, in which: (1) Iron...

  15. 78 FR 25303 - Prestressed Concrete Steel Rail Tie Wire From China, Mexico, and Thailand

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-30

    ...Nos. 731-TA-1207-1209 (Preliminary)] Prestressed Concrete Steel Rail Tie Wire From China, Mexico, and Thailand Institution...materially retarded, by reason of imports from prestressed concrete steel rail tie wire from China, Mexico, and Thailand,...

  16. 77 FR 2958 - Prestressed Concrete Steel Wire Strand From Thailand: Correction to Notice of Opportunity To...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-20

    ...International Trade Administration [A-549-820] Prestressed Concrete Steel Wire Strand From Thailand: Correction to Notice of Opportunity...administrative review of the antidumping duty order on prestressed concrete steel wire strand (``PC Strand'') from Thailand....

  17. 75 FR 32747 - Prestressed Concrete Steel Wire Strand from Mexico: Rescission of Antidumping Duty Administrative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-09

    ...INTERNATIONAL TRADE ADMINISTRATION [A-201-831] Prestressed Concrete Steel Wire Strand from Mexico: Rescission of Antidumping Duty...administrative review of the antidumping duty order on prestressed concrete steel wire strand (``PC Strand'') from Mexico for...

  18. 7 CFR 1755.702 - Copper coated steel reinforced (CCSR) aerial service wire.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...Agriculture 11 2014-01-01 2014-01-01 false Copper coated steel reinforced (CCSR) aerial service wire. 1755...ACCEPTABLE MATERIALS, AND STANDARD CONTRACT FORMS § 1755.702 Copper coated steel reinforced (CCSR) aerial service wire....

  19. 7 CFR 1755.702 - Copper coated steel reinforced (CCSR) aerial service wire.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...Agriculture 11 2013-01-01 2013-01-01 false Copper coated steel reinforced (CCSR) aerial service wire. 1755...ACCEPTABLE MATERIALS, AND STANDARD CONTRACT FORMS § 1755.702 Copper coated steel reinforced (CCSR) aerial service wire....

  20. 7 CFR 1755.702 - Copper coated steel reinforced (CCSR) aerial service wire.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...Agriculture 11 2011-01-01 2011-01-01 false Copper coated steel reinforced (CCSR) aerial service wire. 1755...ACCEPTABLE MATERIALS, AND STANDARD CONTRACT FORMS § 1755.702 Copper coated steel reinforced (CCSR) aerial service wire....

  1. 7 CFR 1755.702 - Copper coated steel reinforced (CCSR) aerial service wire.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...Agriculture 11 2012-01-01 2012-01-01 false Copper coated steel reinforced (CCSR) aerial service wire. 1755...ACCEPTABLE MATERIALS, AND STANDARD CONTRACT FORMS § 1755.702 Copper coated steel reinforced (CCSR) aerial service wire....

  2. 7 CFR 1755.702 - Copper coated steel reinforced (CCSR) aerial service wire.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...Agriculture 11 2010-01-01 2010-01-01 false Copper coated steel reinforced (CCSR) aerial service wire. 1755...ACCEPTABLE MATERIALS, AND STANDARD CONTRACT FORMS § 1755.702 Copper coated steel reinforced (CCSR) aerial service wire....

  3. Experimental evaluation of Harrington rod fixation supplemented with sublaminar wires in stabilizing thoracolumbar fracture-dislocations.

    PubMed

    Munson, G; Satterlee, C; Hammond, S; Betten, R; Gaines, R W

    1984-10-01

    Segments of the spinal column of calves were instrumented with Harrington rods with and without sublaminar wires. Grossly unstable lesions were created by resecting a 2-cm segment from the central spinal segment. Testing on an Instron tester documented the improvement in stability provided by the sublaminar wires in this grossly unstable experimental fracture. Improved stability was seen in resisting axial loading, lateral bending, and forward flexion loading. Rotational stability was particularly improved. PMID:6478708

  4. 78 FR 37236 - Prestressed Concrete Steel Rail Tie Wire From China, Mexico, and Thailand

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-20

    ...731-TA-1207-1209 (Preliminary)] Prestressed Concrete Steel Rail Tie Wire From China, Mexico...Mexico, and Thailand of prestressed concrete steel rail tie wire, provided for in...reason of LTFV imports of prestressed concrete steel rail tie wire from China,...

  5. 76 FR 73589 - Galvanized Steel Wire From the People's Republic of China: Amended Preliminary Determination of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-29

    ... Determination: Galvanized Steel Wire from the People's Republic of China, 76 FR 68407 (November 4, 2011... International Trade Administration Galvanized Steel Wire From the People's Republic of China: Amended... than fair value in the antidumping investigation of galvanized steel wire from the People's Republic...

  6. Perforation of HY-100 steel plates with long rod projectiles

    SciTech Connect

    Hanchak, S.J.; Altman, B.S.; Forrestal, M.J.

    1993-07-01

    The authors conducted perforation experiments with 4340 steel, rod projectiles and HY-100 steel, target plates at striking velocities between 80 and 370 m/s. Projectiles were machined to nominally 30-mm-diameter and 281-mm-length so they could be launched from a 30-mm-powder gun without sabots. The target plates were rigidly clamped at 305-mm diameter and had a nominal thickness of 10.2 mm. In addition to measuring striking and residual projectile velocities, they obtained back surface framing camera data that showed clearly the plate deformation and plug ejection process. An Imacon 792 camera provided up to 20 frames per experiment with an interframe time duration of 10 {mu}s. The modeling work is in progress, but they present a beam model that exhibits the features observed in the experiments.

  7. 76 FR 21914 - Galvanized Steel Wire From China and Mexico

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-19

    ... these investigations (75 FR 877, April 7, 2011). Due to scheduling conflicts, the Commission is issuing... From the Federal Register Online via the Government Printing Office INTERNATIONAL TRADE COMMISSION Galvanized Steel Wire From China and Mexico AGENCY: United States International Trade Commission....

  8. 76 FR 19382 - Galvanized Steel Wire From China and Mexico

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-07

    ... amended, 67 FR 68036 (November 8, 2002). Even where electronic filing of a document is permitted, certain... Filing Procedures, 67 FR 68168, 68173 (November 8, 2002). In accordance with sections 201.16(c) and 207.3... Galvanized Steel Wire From China and Mexico AGENCY: United States International Trade Commission....

  9. 75 FR 8113 - Prestressed Concrete Steel Wire Strand From China

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-23

    ... subject investigations (75 FR 4104, January 26, 2010). On January 28, 2010, the Commission was notified by... From the Federal Register Online via the Government Printing Office INTERNATIONAL TRADE COMMISSION Prestressed Concrete Steel Wire Strand From China AGENCY: United States International Trade Commission....

  10. 75 FR 4104 - Prestressed Concrete Steel Wire Strand From China

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-26

    ... Schedule of the United States (``HTSUS'').'' 74 FR 30536, December 23, 2009. For further information... FR 68036 (November 8, 2002). Even where electronic filing of a document is permitted, certain... Prestressed Concrete Steel Wire Strand From China AGENCY: United States International Trade Commission....

  11. Corrosion and embrittlement of high-strength steel bridge wires

    NASA Astrophysics Data System (ADS)

    Vermaas, Garry Wayne

    Suspension bridge cable inspections have revealed severely corroded and broken wires in some main cables. Accelerated cyclic corrosion studies were conducted to assess the relative effect of corrosion on high-strength steel bridge wire. Galvanized and ungalvanized wire samples were corroded under various levels of sustained loads in a cabinet that cyclically applied an acidic salt spray, dry conditions, and 100% relative humidity at elevated temperature. Mass loss, hydrogen concentration, ultimate load, and elongation at failure were measured for corroded and uncorroded samples. Elongation measurements indicated a significant embrittlement of the wires that could not be explained only by the presence of absorbed hydrogen (hydrogen embrittlement). The main cause of reduction of wire elongation was found to be the surface irregularities induced by the corrosion process. The corrosion process in a high-strength steel wire was modeled and analyzed using finite element methods. Forty-one separate FEM tests were run and this data was compared to the experimental data. In addition, for the purpose of comparison, a previously developed hydrogen embrittlement model was analyzed and its validity was discussed in detail. SEM photographs of the fracture surfaces were taken and possible causes and mechanisms of fracture were suggested by observations of the fracture morphology. It was shown through this experimental and numerical research work that the geometry of the wire, determined by the amount of corrosion, pitting, and surface irregularities, controls the ultimate elongation of the wire sample, as also confirmed by the SEM analysis of the fracture surfaces. It was also shown that, using a generally accepted hydrogen embrittlement model, there is no evidence that hydrogen embrittlement is occurring, or at least that hydrogen evolution is not the controlling factor in the loss of wire's ductility.

  12. Effect of microalloying on pearlite transformation of high carbon wire steels

    NASA Astrophysics Data System (ADS)

    Miller, Stephanie L.

    Microalloying has been shown to improve strength in eutectoid steels for wire applications, and previous work on vanadium-microalloyed eutectoid steels showed delayed pearlite transformation with additions of niobium and accelerated pearlite transformation with additional nitrogen. This study investigates the origin of the CCT shifts with microalloying additions and whether trends in hardness and microstructural feature sizes observed in continuous cooling tests persist through industrial hot rolling simulations. An industrially hot rolled 1080 wire rod with vanadium additions and three laboratory-prepared alloys were studied. The base alloy, denoted the V steel, had a composition of 0.80C-0.50Mn-0.24Si-0.20Cr-0.079V-0.0059N (wt pct). The V+N steel contained 0.0088 wt pct N, and the V+Nb steel contained an additional 0.010 wt pct Nb. All alloys were subjected to a GleebleRTM 3500 torsion hot rolling simulation based on industrial wire rod hot rolling parameters. Microstructural constituents, Vickers hardness, pearlite colony size, and pearlite interlamellar spacing (ILS) were characterized for each alloy. All alloys exhibited pearlitic microstructures with some proeutectoid ferrite at prior austenite grain boundaries, with no evidence of shear transformation products. The V steel has the lowest overall hardness, while both nitrogen and niobium additions increase hardness by approximately 15 HV, correlating to a 43 MPa increase in yield strength. Niobium additions refined ILS, with an average ILS of 92 +/- 3 nm for the V+Nb steel compared to 113 +/- 5 nm for the V steel and 113 +/- 3 nm for the V+N alloy. Vanadium additions produced precipitation strengthening for all alloys and heat treatments, and additional precipitation strengthening with nitrogen and niobium additions was not apparent based on a Taleff regression analysis. Atom probe tomography of an industrially processed wire rod with vanadium additions revealed vanadium enrichment of cementite, and vanadium supersaturation in ferrite. Enhanced nucleation of V(C,N) on prior austenite grain boundaries was hypothesized to accelerate pearlite transformation in the presence of additional nitrogen. Based on the CCT thermal profile, samples were heat treated by quenching from 1093 °C and 880 °C for assessment of the state of vanadium. Solubility predictions indicated full dissolution at 1093 °C, and precipitation at 880 °C. Electrochemical dissolution results showed almost no V(C,N) precipitation for either hold temperature. Atom probe tomography showed homogeneous vanadium distribution in austenite for all samples quenched from 880 °C. Therefore the theory of accelerated pearlite transformation by enhanced nucleation of V(C,N) was not confirmed. Results indicate that accelerated transformation effects with nitrogen additions are not due to austenite grain size effects, differences in volume fraction of precipitates in austenite, or inhomogeneity of vanadium distribution in austenite. Solute drag of niobium in austenite was identified as a possible mechanism for delay of pearlite transformation with niobium additions. Samples of the V and V+Nb alloys were heat treated by quenching from 1093 °C for assessment of the state of Nb. Solubility modeling for mixed Nbx, V1-xCyN1-y precipitates predicted full precipitation at 1093 °C, with no niobium dissolved in austenite. Austenite grain size (AGS) was determined to be refined by ~50 microm for the V+Nb steel compared to the V steel, but AGS refinement would produce the opposite transformation shift than experimentally observed. Electrochemical dissolution showed less than 0.0020 wt pct Nb dissolved in austenite. Atom probe tomography of a pearlite transformation interface indicated no niobium present in austenite adjacent to the boundary. Modeling predictions, dissolution results, and APT compositional analysis presented in the current study have not confirmed a solute drag mechanism, though it remains plausible given the resolution and sampling volume limitations of the experimental methods employed.

  13. 78 FR 66382 - Certain Steel Threaded Rod From India and Thailand

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-05

    ..., 2013 (78 FR 40170). The conference was held in Washington, DC, on July 18, 2013, and all persons who... COMMISSION Certain Steel Threaded Rod From India and Thailand Determinations On the basis of the record \\1... injured by reason of imports from India and Thailand of certain steel threaded rod, provided for...

  14. 78 FR 75547 - Prestressed Concrete Steel Rail Tie Wire From Thailand: Preliminary Determination of Sales at Not...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-12

    ... International Trade Administration Prestressed Concrete Steel Rail Tie Wire From Thailand: Preliminary... concrete steel rail tire wire (``PC tie wire'') from Thailand is not being, or likely to be, sold in the... prestressed tendons in concrete railroad ties (``PC tie wire''). High carbon steel is defined as steel...

  15. 75 FR 32362 - Certain Steel Grating from the People's Republic of China: Final Affirmative Countervailing Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-08

    ...as hot-rolled sheet, plate, or wire rod. The scope of this investigation...and expanded, and does not involve welding or joining of multiple pieces of steel...Remuneration'' and ``Provision of Wire Rod for Less than Adequate...

  16. 78 FR 75547 - Prestressed Concrete Steel Rail Tie Wire From Thailand: Preliminary Determination of Sales at Not...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-12

    ...Administration [A-549-829] Prestressed Concrete Steel Rail Tie Wire From Thailand: Preliminary...preliminarily determines that prestressed concrete steel rail tire wire (``PC tie wire...suitable for use as prestressed tendons in concrete railroad ties (``PC tie...

  17. 78 FR 75544 - Prestressed Concrete Steel Rail Tie Wire From Mexico: Preliminary Determination of Sales at Less...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-12

    ...Administration [A-201-843] Prestressed Concrete Steel Rail Tie Wire From Mexico: Preliminary...preliminarily determines that prestressed concrete steel rail tie wire (``PC tie wire...suitable for use as prestressed tendons in concrete railroad ties (``PC tie...

  18. Recrystallization behavior of a low carbon steel wire

    NASA Astrophysics Data System (ADS)

    Larouk, Z.; Bouhalais, H.

    2009-11-01

    The primary recrystallization of a steel containing 0.05 (wt%) carbon is examined. The present material is produced by Trifisoud- Setif-Algeria and received as wires of 4, 3.18, 2.45 mm diameters. The samples are subjected to annealing treatments at 480-520 ?C. The recrystallization temperature is determined and found to be lower for the wire with higher wiredrawing area reduction (?w) . The two parameters (k and n) in Avrami law are calculated. A relationship between ?w and recrystallized grain size (drec) is established. The recrystallization activation energy is estimated. The obtained results are compared with other material results.

  19. 77 FR 67332 - Certain Steel Threaded Rod From the People's Republic of China: Final Results and Final Partial...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-09

    ...the Order The merchandise covered by the order is steel threaded rod. Steel threaded rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid, circular cross section, of any diameter, in any straight length, that have...

  20. 78 FR 4389 - Certain Steel Threaded Rod From the People's Republic of China: Amended Final Results of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-22

    ...Order The merchandise covered by the order is steel threaded rod.\\4\\ Steel threaded rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid, circular cross section, of any diameter, in any straight length, that have...

  1. Neutron strain scanning in straightened eutectoid steel rods

    NASA Astrophysics Data System (ADS)

    Martínez, M. L.; Borlado, C. R.; Mompeán, F. J.; Peng, R. L.; Daymond, M. R.; Ruiz, J.; García-Hernández, M.

    Neutron strain scanning has been performed on a neutectoid steel rod at a reactor-based source (REST diffractometer, at NFL) and at a pulsed source (ENGIN diffractometer, at ISIS). The rod is primarily obtained from a drawing process and has been subject to bending and straightening procedures, which induce residual stress. The material exhibits a pearlitic microstructure, with alternating ferrite (90 vol%) and cementite (10 vol%) layers. Strain profiles for the ferritic phase were measured on REST. Both phases were measured on ENGIN and analysed by single-peak (ferrite) and Rietveld refinement (ferrite and cementite) methods. The agreement between REST and ENGIN data is excellent for the three measured directions in the ferritic phase. Total stress profiles have been evaluated by combining phase stresses using the rule of mixtures. The experimental results compare well with analytical models for a two-phase material subject to bending and straightening operations under pure bending and unbending moments with perfect elastic behaviour up to the yield point and plastic Voce behaviour above.

  2. Cold drawn steel wires--processing, residual stresses and ductility Part II: Synchrotron and neutron diffraction

    E-print Network

    Cold drawn steel wires--processing, residual stresses and ductility Part II: Synchrotron Received in final form 29 September 2005 ABSTRACT Cold drawing of steel wires leads to an increase proposed that cold drawing would induce a phase transformation of the steel, possibly a martensitic

  3. Unsupervised Classification of Surface Defects in Wire Rod Production Obtained by Eddy Current Sensors

    PubMed Central

    Saludes-Rodil, Sergio; Baeyens, Enrique; Rodríguez-Juan, Carlos P.

    2015-01-01

    An unsupervised approach to classify surface defects in wire rod manufacturing is developed in this paper. The defects are extracted from an eddy current signal and classified using a clustering technique that uses the dynamic time warping distance as the dissimilarity measure. The new approach has been successfully tested using industrial data. It is shown that it outperforms other classification alternatives, such as the modified Fourier descriptors. PMID:25938201

  4. Mechanical properties of cobalt-chromium wires compared to stainless steel and ?-titanium wires

    PubMed Central

    Alobeid, Ahmad; Hasan, Malak; Al-Suleiman, Mahmoud; El-Bialy, Tarek

    2014-01-01

    Background: Previous studies have reported on mechanical properties of different orthodontic wires. However, there is a paucity of information that comparing the mechanical properties of Blue Elgiloy (BE) when compared to stainless steel and TMA, as finishing wires as received by different companies. Aims: The aim of this study was to evaluate the mechanical properties of BE wires compared to stainless steel (SS) and titanium Molybdenum alloy (TMA) also known as ? titanium as provided by two companies. Materials and Methods: Six 0.016 x 0.022-14mm-samples of each wire were fixed individually to Instron machine and were tested in loading and unloading for three times. The initial load was set for 500 Kg at a speed of 1mm/min and displacement was adjusted for (0.5, 1mm in loading and 0.5 mm unloading at 25°C). Statistics Analysis: Variables were compared between groups by ANOVA test using SPSS statistical software. Results: BE shows comparable forces to SS when loaded 0.5 and showed decreased forces in 1mm loading compared to SS, and higher than TMA. BE also showed no forces at unloading and high deformation. Conclusion: BE from the two companies showed comparable mechanical properties while SS and TMA were different. The deformation of BE and its decreased forces in unloading may limit its clinical use. PMID:25426458

  5. 78 FR 29325 - Prestressed Concrete Steel Rail Tie Wire From Mexico, the People's Republic of China, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-20

    ...A-570-990, A-549-829] Prestressed Concrete Steel Rail Tie Wire From Mexico, the...petitions concerning imports of prestressed concrete steel rail tie wire (``PC tie wire...Antidumping Duty Petitions on Prestressed Concrete Steel Rail Tie Wire from the PRC,...

  6. The Microstructure and Hardness of Hot Dip Galvanized Steel During Wire Drawing

    SciTech Connect

    Klmaku, Snukn; Syla, Nairn; Dilo, Teuta

    2010-01-21

    The steel wire samples are hot-dip-galvanized. The zinc coating is preformed using the standard method. To recognize the behavior of the zinc coated steel wire during the submission to deformation, the wire samples are drawn on a machine designed for this aim and then investigated. In this research is represented the phase structure of the zinc coated samples. Afterwards the thickness of the layer and the hardness of the hot-dip galvanized steel depending on the drawing is represented.

  7. Fatal bleeding due to sternal steel wire fracture following open-heart surgery

    PubMed Central

    Gong, Wenhui; Ye, Xiaofeng; Wang, Zhe; Li, Sen

    2015-01-01

    Nowadays, stainless steel wires suturing is the most common and safety way for the median sternotomy closure. And it is also accepted by our center. Albeit, in July 2014, a patient who underwent left ventricular outflow tract plus mitral valvuloplasty in extracorporeal circulation suffered a fatal bleeding due to fractured steel wire. The fractured steel wire punctured the free wall of right ventricle and left a 3 mm diameter wound, thus caused the 1,000 mL drainage within half an hour. In our opinion, it was the instant increase in yield strength after strong cough that makes the steel wire fractured. PMID:26623134

  8. Emission of dust and gases in tubular cored wire welding of steel.

    PubMed

    Matusiak, Jolanta; Rams, Beata

    2003-01-01

    The emission of dusts and gases, which are generated during tubular cored wire welding and which are hazardous to health and the environment, were studied. Tests included various kinds of tubular electrode wires used for welding steel, that is, rutile flux cored wires, basic flux cored wires, and metal cored wires for welding unalloyed, low-alloy, and high-alloy steels as well as self-shielded flux cored wires used for welding low-alloy steels. The research results make it possible to assess the influence of the type of wire and welding conditions on the emission volume and to compare chemical hazards generated during tubular cored wire welding with those typical for other arc welding processes. PMID:14577949

  9. 77 FR 473 - Certain Steel Threaded Rod From the People's Republic of China: Initiation of Anti-Circumvention...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-05

    ... Republic of China: Notice of Antidumping Duty Order, 74 FR 17154 (April 14, 2009) (``Steel Threaded Rod... the Steel Threaded Rod Order.\\3\\ \\3\\ See Notice of Scope Rulings, 76 FR 10558, 10559 (February 25... studs, of carbon quality steel, having a solid, circular cross section, of any diameter, in any...

  10. Mechanical and thermal stability of heavily drawn pearlitic steel wire

    SciTech Connect

    Aernoudt, E.; Delrue, H.; Van Humbeeck, J.; Watte, P.; Sevillano, J.G.; Lefever, I.

    1996-12-31

    Having interlamellar spacings on the nanometer scale, there is no doubt about considering heavily drawn pearlitic steel wire as a nano-layered material. This extremely fine structure is of great technical importance: indeed, as the interlamellar distance determines the onset of plastic flow, the wire can be brought to a tensile strength beyond 4,000 MPa and is therefore one of the strongest materials on the market nowadays. At extremely large strains (well beyond {var_epsilon} = 4) and/or at moderate temperatures, the pearlitic steel loses its strength. Several possible failure mechanisms, like fragmentation of the cementite or thermal and strain-induced cementite dissolution, are put forward, but until now, there is no definite understanding of the really active mechanism. In the present work, the calorimetric differential scanning technique, in combination with thermopower measurements and the high-resolution atomic force microscopy, have turned out to be most promising tools to reveal some of the mechanisms that are responsible for the degradation of the lamellar aggregate.

  11. 77 FR 806 - Steel Wire Garment Hangers From Taiwan and Vietnam; Institution of Antidumping and Countervailing...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-06

    ... amendments took effect on November 7, 2011. See 76 FR 61937 (Oct. 6, 2011) and the newly revised Commission's... Steel Wire Garment Hangers From Taiwan and Vietnam; Institution of Antidumping and Countervailing Duty... Vietnam of steel wire garment hangers, provided for in subheading 7326.20 of the Harmonized...

  12. 77 FR 66952 - Steel Wire Garment Hangers From the People's Republic of China: Antidumping Duty Administrative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-08

    ..., 75 FR 68758, 68761 (November 9, 2010), unchanged in First Administrative Review of Steel Wire Garment... Duty Administrative Review, 76 FR 27994, 27996 (May 13, 2011). DATES: Effective November 8, 2012. FOR... Duty Order: Steel Wire Garment Hangers from the People's Republic of China, 73 FR 58111 (October...

  13. 77 FR 9701 - Steel Wire Garment Hangers From Taiwan And Vietnam

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-17

    ... Commission, Washington, DC, and by publishing the notice in the Federal Register of January 6, 2012 (77 FR... Steel Wire Garment Hangers From Taiwan And Vietnam Determinations On the basis of the record \\1... injured by reason of imports from Taiwan and Vietnam of steel wire garment hangers, provided for...

  14. 77 FR 73424 - Steel Wire Garment Hangers From Taiwan: Antidumping Duty Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-10

    ... Than Fair Value, 77 FR 62492 (October 15, 2012) (``Final Determination''). \\2\\ See Steel Wire Garment... Hangers from Taiwan: Preliminary Determination of Sales at Less than Fair Value, 77 FR 46055 (August 2... carbon steel wire, whether or not galvanized or painted, whether or not coated with latex or epoxy...

  15. 77 FR 2958 - Prestressed Concrete Steel Wire Strand From Thailand: Correction to Notice of Opportunity To...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-20

    ...; Opportunity To Request Administrative Review, 77 FR 83 (January 3, 2012). Subsequent to this publication, we... International Trade Administration Prestressed Concrete Steel Wire Strand From Thailand: Correction to Notice of... administrative review of the antidumping duty order on prestressed concrete steel wire strand (``PC...

  16. 75 FR 36678 - Prestressed Concrete Steel Wire Strand From China; Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-28

    ... publishing the notice in the Federal Register of February 23, 2010 (75 FR 8113). The hearing was held in... Prestressed Concrete Steel Wire Strand From China; Determinations On the basis of the record \\1\\ developed in... prestressed concrete steel wire strand (PC strand), provided for in subheading 7312.10.30 of the...

  17. 78 FR 25303 - Prestressed Concrete Steel Rail Tie Wire From China, Mexico, and Thailand

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-30

    ... From the Federal Register Online via the Government Publishing Office INTERNATIONAL TRADE COMMISSION Prestressed Concrete Steel Rail Tie Wire From China, Mexico, and Thailand Institution of... materially retarded, by reason of imports from prestressed concrete steel rail tie wire from China,...

  18. 78 FR 70271 - Steel Wire Garment Hangers From the People's Republic of China: Preliminary Results of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-25

    ... Notice of Antidumping Duty Order: Steel Wire Garment Hangers from the People's Republic of China, 73 FR...., Ltd. (``Shanghai Wells''), Hong Kong Wells Ltd. (``HK Wells'') and Hong Kong Wells Ltd. (USA) (``Wells... International Trade Administration Steel Wire Garment Hangers From the People's Republic of China:...

  19. 75 FR 28557 - Pre-Stressed Concrete Steel Wire Strand from the People's Republic of China: Final Affirmative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-21

    ...Administration [C-570-946] Pre-Stressed Concrete Steel Wire Strand from the People's...producers and exporters of pre-stressed concrete steel wire strand from the People's...October 27, 2009. See Pre-Stressed Concrete Steel Wire Strand from the...

  20. 78 FR 57619 - Prestressed Concrete Steel Rail Tie Wire From Mexico, Thailand, and the People's Republic of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-19

    ...A-549-829, A-570-990] Prestressed Concrete Steel Rail Tie Wire From Mexico, Thailand...investigations of imports of prestressed concrete steel rail tie wire from Mexico, Thailand...People's Republic of China. See Prestressed Concrete Steel Rail Tie Wire From Mexico,...

  1. 75 FR 38977 - Pre-Stressed Concrete Steel Wire Strand from the People's Republic of China: Notice of Amended...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-07

    ...Administration [C-570-946] Pre-Stressed Concrete Steel Wire Strand from the People's...countervailing duty order on pre-stressed concrete steel wire strand (PC strand) from...U.S. industry. See Pre-Stressed Concrete Steel Wire Strand from the...

  2. Cold drawn steel wires--processing, residual stresses and ductility--part I: metallography and finite element analyses

    E-print Network

    Cold drawn steel wires--processing, residual stresses and ductility--part I: metallography form 29 September 2005 ABSTRACT Cold drawing steel wires lead to an increase of their mechanical that, though the steel wires are plastically deformed up to strain levels as high as 3.5, a significant

  3. Mechanism for Selective Synaptic Wiring of Rod Photoreceptors into the Retinal Circuitry and Its Role in Vision.

    PubMed

    Cao, Yan; Sarria, Ignacio; Fehlhaber, Katherine E; Kamasawa, Naomi; Orlandi, Cesare; James, Kiely N; Hazen, Jennifer L; Gardner, Matthew R; Farzan, Michael; Lee, Amy; Baker, Sheila; Baldwin, Kristin; Sampath, Alapakkam P; Martemyanov, Kirill A

    2015-09-23

    In the retina, rod and cone photoreceptors form distinct connections with different classes of downstream bipolar cells. However, the molecular mechanisms responsible for their selective connectivity are unknown. Here we identify a cell-adhesion protein, ELFN1, to be essential for the formation of synapses between rods and rod ON-bipolar cells in the primary rod pathway. ELFN1 is expressed selectively in rods where it is targeted to the axonal terminals by the synaptic release machinery. At the synapse, ELFN1 binds in trans to mGluR6, the postsynaptic receptor on rod ON-bipolar cells. Elimination of ELFN1 in mice prevents the formation of synaptic contacts involving rods, but not cones, allowing a dissection of the contributions of primary and secondary rod pathways to retinal circuit function and vision. We conclude that ELFN1 is necessary for the selective wiring of rods into the primary rod pathway and is required for high sensitivity of vision. PMID:26402607

  4. Arc characteristics of submerged arc welding with stainless steel wire

    NASA Astrophysics Data System (ADS)

    Li, Ke; Wu, Zhi-sheng; Liu, Cui-rong; Chen, Feng-hua

    2014-08-01

    The arc characteristics of submerged arc welding (SAW) with stainless steel wire were studied by using Analysator Hannover (AH). The tests were carried out under the same preset arc voltage combined with different welding currents. By comparing the probability density distribution (PDD) curves of arc voltage and welding current, the changes were analyzed, the metal transfer mode in SAW was deduced, and the characteristics of a stable arc were summarized. The analysis results show that, with an increase of welding parameters, the short-circuiting peak in the PDD curves of arc voltage decreases gradually until it disappears, and the dominant metal transfer mode changes from flux-wall guided transfer to projected transfer and then to streaming transfer. Moreover, when the PDD curves of arc voltage are both unimodal and generally symmetrical, the greater the peak probability and the smaller the peak span, the more stable the arc becomes.

  5. 76 FR 23564 - Galvanized Steel Wire From the People's Republic of China: Initiation of Countervailing Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-27

    ...investigation covers galvanized steel wire which is a cold-drawn carbon quality steel product in coils, of solid...hot-dipping or electroplating). Steel products to be included in...tungsten, or 0.02 percent of boron, or 0.10 percent of...

  6. DESIGN OF WIRE-WRAPPED ROD BUNDLE MATCHED INDEX-OF-REFRACTION EXPERIMENTS

    SciTech Connect

    Hugh McIlroy; Hongbin Zhang; Kurt Hamman

    2008-05-01

    Experiments will be conducted in the Idaho National Laboratory (INL) Matched Index-of-Refraction (MIR) Flow Facility [1] to characterize the three-dimensional velocity and turbulence fields in a wire-wrapped rod bundle typically employed in liquid-metal cooled fast reactors and to provide benchmark data for computer code validation. Sodium cooled fast reactors are under consideration for use in the U.S. Department of Energy (DOE) Global Nuclear Energy Partnership (GNEP) program. The experiment model will be constructed of quartz components and the working fluid will be mineral oil. Accurate temperature control (to within 0.05 oC) matches the index-of-refraction of mineral oil with that of quartz and renders the model transparent to the wavelength of laser light employed for optical measurements. The model will be a scaled 7-pin rod bundle enclosed in a hexagonal canister. Flow field measurements will be obtained with a LaVision 3-D particle image velocimeter (PIV) and complimented by near-wall velocity measurements obtained from a 2-D laser Doppler velocimeter (LDV). These measurements will be used as benchmark data for computational fluid dynamics (CFD) validation. The rod bundle model dimensions will be scaled up from the typical dimensions of a fast reactor fuel assembly to provide the maximum Reynolds number achievable in the MIR flow loop. A range of flows from laminar to fully-turbulent will be available with a maximum Reynolds number, based on bundle hydraulic diameter, of approximately 22,000. The fuel pins will be simulated by 85 mm diameter quartz tubes (closed on the inlet ends) and the wire-wrap will be simulated by 25 mm diameter quartz rods. The canister walls will be constructed from quartz plates. The model will be approximately 2.13 m in length. Bundle pressure losses will also be measured and the data recorded for code comparisons. The experiment design and preliminary CFD calculations, which will be used to provide qualitative hydrodynamic information, are presented in this paper.

  7. Perforation of HY-100 steel plates with 4340 R{sub c} 38 and T-250 maraging steel rod projectiles

    SciTech Connect

    Forrestal, M.J.; Hanchak, S.J.

    1998-05-25

    The authors conducted perforation experiments with 4340 Rc 38 and T-250 maraging steel, long rod projectiles and HY-100 steel target plates at striking velocities between 80 and 370 m/s. Flat-end rod projectiles with lengths of 89 and 282 mm were machined to nominally 30-mm-diameter so they could be launched from a 30-mm-powder gun without sabots. The target plates were rigidly clamped at a 305-mm-diameter and had nominal thicknesses of 5.3 and 10.5 mm. Four sets of experiments were conducted to show the effects of rod length and plate thickness on the measured ballistic limit and residual velocities. In addition to measuring striking and residual projectile velocities, they obtained framing camera data on the back surfaces of several plates that showed clearly the plate deformation and plug ejection process. They also present a beam model that exhibits qualitatively the experimentally observed mechanisms.

  8. Optimizing the sensing performance of a single-rod fluxgate magnetometer using thin magnetic wires

    NASA Astrophysics Data System (ADS)

    Can, Hava; Svec, Peter, Jr.; Tanr?seven, Sercan; Bydzovsky, Jan; Birlikseven, Cengiz; Sözeri, Hüseyin; Svec, Peter, Sr.; Topal, U?ur

    2015-11-01

    This paper presents the optimal conditions for the design of a single-rod fluxgate magnetometer using Co-based amorphous magnetic wires with reduced geometrical dimensions of 100 ?m in diameter. In order to enhance the performance of the current sensor (i.e. the noise level, the sensitivity, the dynamical range, the scaling factor, etc), the core materials were subjected to annealing at different annealing temperatures in a longitudinal magnetic field ranging from 0 to 0.5 T. The B-H measurements have shown that the heat treatments significantly change the magnetic parameters of the cores (the saturation field, the initial and apparent permeabilities). For instance, the initial permeability ? i attains values of between 3500 and 4700 depending on the treatment conditions. These magnetic parameters were subsequently correlated with the sensor performance by using the principles of the fluxgate physics. Consequently, the enhanced fluxgate effect with improved sensing characteristics has been obtained by annealing the wire core at 250 °C (B??=??0 T). It is shown that this magnetic wire with a sensing area of 0.00785?mm2 is suitable as a sensor core for the nondestructive testing of metallic objects and the surfaces of magnetic cards. The sensor signal shows perfect linear dependence to dc or low frequency fields up to ~1 Oe. The fitting parameters R 2 of 0.9998 could be achieved in a dc field interval of??-1.0 Oe and 1.0 Oe (when R 2??=1.0, all points lie exactly on the curve with no scatter). Such linearity has not been seen in such a large dynamical range until now in the rod-type single-core fluxgates. It is also shown that there is no hysteresis on the V 2f -H dc graphs (the V 2f is the sensor signal) even after applying fields as high as 100 Oe. Besides, the cross-field effect is almost zero due to the geometry of the long-thin wire.

  9. Flexibility and hardness of dental stainless steel wrought wires used in Thailand.

    PubMed

    Benjakul, P; Cheunarrom, C; Ongthiemsak, C

    2001-03-01

    Stainless steel wrought wires used as clasp arms for removable partial dentures in Thailand were compared with those used in some other countries (in the as-received condition) in terms of flexibility, Vickers microhardness and composition. The results showed that there were significant differences (P< or =0.05) among the wires. A Japanese stainless steel wire (SK) was obviously different from the others. It had the lowest proportional limit and microhardness, but its flexibility was almost the same. The chemical composition of each wire was not greatly different. The wires were about 18-20 wt% chromium and 8-9 wt% nickel, except for the SK wire, which had about 12 wt% nickel. PMID:11383631

  10. Corrosion resistance of premodeled wires made of stainless steel used for heart electrotherapy leaders

    NASA Astrophysics Data System (ADS)

    Przondziono, J.; Walke, W.; M?ynarski, R.; Szatka, W.

    2012-05-01

    The purpose of the study is to evaluate resistance to electrochemical corrosion of wire made of X10CrNi18-8 stainless steel designed for use in cardiology treatment. The influence of strain formed in the premodeling process and methods of wire surface preparation to corrosive resistance in artificial plasma solution were analysed. Wire corrosion tests were carried out in the solution of artificial plasma. Resistance to electrochemical corrosion was evaluated on the ground of recorded curves of anodic polarization by means of potentiodynamic method. Potentiodynamic tests carried out enabled to determine how the resistance to pitting corrosion of wire changes, depending on strain formed in the premodeling process as well as on the method of wire surface preparation. For evaluation of phenomena occurring on the surface of tested steel, electrochemical impedance spectroscopy (EIS) was applied. Deterioration of corrosive properties of wire along with the increase in the formed strain hardening was observed.

  11. 78 FR 71565 - Steel Threaded Rod from India: Postponement of Preliminary Determination of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-29

    ... Antidumping Duty Investigations, 78 FR 44526 (July 24, 2013). \\2\\ See the memorandum for the record... Determination Deadlines Pursuant to the Tariff Act of 1930, As Amended. 70 FR 24533 (May 10, 2008). This notice... International Trade Administration Steel Threaded Rod from India: Postponement of Preliminary Determination...

  12. Reconstruction of radial thermal conductivity depth profile in case hardened steel rods

    E-print Network

    Mandelis, Andreas

    Reconstruction of radial thermal conductivity depth profile in case hardened steel rods Ricardo the radial thermal conductivity of which varies continuously. It is demonstrated numerically that, using with continuously varying radial thermal conductivity can be calculated with high accuracy. Next, an inverse

  13. Feasibility demonstration of using wire electrical-discharge machining, abrasive flow honing, and laser spot welding to manufacture high-precision triangular-pitch Zircaloy-4 fuel-rod-support grids

    SciTech Connect

    Horwood, W.A.

    1982-05-01

    Results are reported supporting the feasibility of manufacturing high precision machined triangular pitch Zircaloy-4 fuel rod support grids for application in water cooled nuclear power reactors. The manufacturing processes investigated included wire electrical discharge machining of the fuel rod and guide tube cells in Zircaloy plate stock to provide the grid body, multistep pickling of the machined grid to provide smooth and corrosion resistant surfaces, and laser welding of thin Zircaloy cover plates to both sides of the grid body to capture separate AM-350 stainless steel insert springs in the grid body. Results indicated that dimensional accuracy better than +- 0.001 and +- 0.002 inch could be obtained on cell shape and position respectively after wire EDM and surface pickling. Results on strength, corrosion resistance, and internal quality of laser spot welds are provided.

  14. Fiber Bragg grating sensors for steel wire monitoring in real-time

    NASA Astrophysics Data System (ADS)

    Koch, Jan; Angelmahr, Martin; Schade, Wolfgang

    2014-05-01

    Steel wires are widely applied in industrial applications - in most cases as critical components fulfilling high safety requirements in harsh environments (e.g. dockside cranes). In this paper a technique for real-time monitoring of steel ropes applying optical strain sensors based on fiber Bragg gratings is presented. The optical sensors are integrated within the wire strand and replace the core. The strain transmission from the outer wires to the sensors is assured by the mechanical coupling between the optical fiber and the strand. The actual strain load and rope vibrations in the kilohertz range can be determined in real-time.

  15. 7 CFR 1755.370 - RUS specification for seven wire galvanized steel strand.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...(a) and 1 CFR part 51 on January 19, 1990). Copies of ASTM A475-78 are available for inspection... 7 Agriculture 11 2013-01-01 2013-01-01 false RUS specification for seven wire galvanized steel... steel strand. (a) RUS incorporates by reference ASTM A475-78, Standard Specification for...

  16. 7 CFR 1755.370 - RUS specification for seven wire galvanized steel strand.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...(a) and 1 CFR part 51 on January 19, 1990). Copies of ASTM A475-78 are available for inspection... 7 Agriculture 11 2012-01-01 2012-01-01 false RUS specification for seven wire galvanized steel... steel strand. (a) RUS incorporates by reference ASTM A475-78, Standard Specification for...

  17. 7 CFR 1755.370 - RUS specification for seven wire galvanized steel strand.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...(a) and 1 CFR part 51 on January 19, 1990). Copies of ASTM A475-78 are available for inspection... 7 Agriculture 11 2014-01-01 2014-01-01 false RUS specification for seven wire galvanized steel... steel strand. (a) RUS incorporates by reference ASTM A475-78, Standard Specification for...

  18. 7 CFR 1755.370 - RUS specification for seven wire galvanized steel strand.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...(a) and 1 CFR part 51 on January 19, 1990). Copies of ASTM A475-78 are available for inspection... 7 Agriculture 11 2011-01-01 2011-01-01 false RUS specification for seven wire galvanized steel... steel strand. (a) RUS incorporates by reference ASTM A475-78, Standard Specification for...

  19. 78 FR 70271 - Steel Wire Garment Hangers From the People's Republic of China: Preliminary Results of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-25

    ... Notice of Antidumping Duty Order: Steel Wire Garment Hangers from the People's Republic of China, 73 FR... Administrative Review, 75 FR 68758, 68761 (November 9, 2010), unchanged in First Administrative Review of Steel... Antidumping Duty Administrative Review, 76 FR 27994, 27996 (May 13, 2011) (``Hangers 1st AR''). \\3\\ See...

  20. 78 FR 37236 - Prestressed Concrete Steel Rail Tie Wire From China, Mexico, and Thailand

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-20

    ... Commission, Washington, DC, and by publishing the notice in the Federal Register of April 30, 2013 (78 FR... COMMISSION Prestressed Concrete Steel Rail Tie Wire From China, Mexico, and Thailand Determinations On the... injured by reason of imports from China, Mexico, and Thailand of prestressed concrete steel rail tie...

  1. 75 FR 1755 - Prestressed Concrete Steel Wire Strand From the People's Republic of China: Postponement of Final...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-13

    ...DEPARTMENT OF COMMERCE International Trade Administration [A-570-945] Prestressed Concrete Steel Wire Strand From the People's Republic of China: Postponement of Final Determination AGENCY: Import...

  2. 76 FR 45509 - Final Results of Antidumping Duty Changed Circumstances Review: Carbon and Certain Alloy Steel...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-29

    ... Circumstances Review: Carbon and Certain Alloy Steel Wire Rod from Mexico, 75 FR 67685 (November 3, 2010... of the Antidumping Duty and Countervailing Duty Orders, and Intent To Revoke Orders in Part, 68 FR...: Carbon and Certain Alloy Steel Wire Rod From Mexico, 71 FR 27989 (May 15, 2006). Notification This...

  3. 78 FR 4389 - Certain Steel Threaded Rod From the People's Republic of China: Amended Final Results of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-22

    ... Duty Administrative Review; 2010-2011, 77 FR 67332 (November 9, 2012) (``Final Results''). Before the... People's Republic of China: Notice of Antidumping Duty Order, 74 FR 17154 (April 14, 2009). \\5\\ See... threaded rod is certain threaded rod, bar, or studs, of carbon quality steel, having a solid,...

  4. Radiative Properties of Implosions of Stainless Steel Wire Arrays with Application to Astrophysics

    SciTech Connect

    Safronova, A. S.; Ouart, N. D.; Kantsyrev, V. L.; Esaulov, A. A.; Safronova, U. I.; Williamson, K. M.; Shrestha, I.; Coverdale, C. A.; Jones, B.; Deeney, C.

    2009-01-21

    Experiments with different stainless steel (SS) wire loads were performed on the 1 MA Zebra Z-pinch generator at University of Nevada, Reno. The wire array loads consisted of 7.6 {mu}m SS wires and had 10 wires for the planar wire array with an interwire gap of 1 mm and 8 wires for the cylindrical wire array of a 16 mm diameter. In addition, a single-wire experiment with a 25 {mu}m SS wire was carried out. The different wire loads were used to provide a broader spectrum of plasma conditions. Time-integrated and time-gated x-ray images, as well as time-integrated, spatially-resolved and spatially-integrated x-ray spectra, were collected and analyzed. Both K-shell and L-shell radiation were recorded using LiF and KAP crystal spectrometers, respectively. Non-LTE kinetic models of Fe and Ni are employed to derive plasma parameters. For axially resolved L-shell spectra, the resulting electron temperatures are between 230 and 300 eV (higher near the cathode) and electron densities vary from 10{sup 19} to 10{sup 20} cm{sup -3} dependent on the load. The advantage of using Z-pinch plasmas for astrophysical applications is highlighted.

  5. Study Of The Wet Multipass Drawing Process Applied On High Strength Thin Steel Wires

    NASA Astrophysics Data System (ADS)

    Thimont, J.; Felder, E.; Bobadilla, C.; Buessler, P.; Persem, N.; Vaubourg, JP.

    2011-05-01

    Many kinds of high strength thin steel wires are involved in so many applications. Most of the time, these wires are made of a pearlitic steel grade. The current developments mainly concern the wire last drawing operation: after a patenting treatment several reduction passes are performed on a slip-type multipass drawing machine. This paper focuses on modeling this multipass drawing process: a constitutive law based on the wire microstructure evolutions is created, a mechanical study is performed, a set of experiments which enables determining the process friction coefficients is suggested and finally the related analytical model is introduced. This model provides several general results about the process and can be used in order to set the drawing machines.

  6. Prospects of increasing the strength of aluminum by reinforcing it with stainless steel wire (a review)

    NASA Technical Reports Server (NTRS)

    Botvina, L. R.; Ivanova, V. S.; Kopev, I. M.

    1982-01-01

    The theoretical and experimental strength of aluminum reinforced with stainless steel wire is analyzed. Various methods of producing the composite material and it's static and cyclical strengths are considered. The reinforcement of aluminum with stainless steel wire was accomplished from the perspective of increasing the specific strength of aluminum and it's alloys, increasing the strength of the material with respect to high and low temperatures, as well as increasing the cyclical strength. The production of the composite aluminum-stainless steel wire material with approximated or calculated strengthening is possible by any of the considered methods. The selection of the proper production technology depends on precise details and conditions of application of the material.

  7. 77 FR 28356 - Steel Wire Garment Hangers From the Socialist Republic of Vietnam and Taiwan: Postponement of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-14

    ...: Initiation of Antidumping Duty Investigations, 77 FR 3731 (January 25, 2012). Postponement of Preliminary... International Trade Administration Steel Wire Garment Hangers From the Socialist Republic of Vietnam and Taiwan... antidumping duty investigations of steel wire garment hangers from the Socialist Republic of...

  8. 77 FR 14002 - Steel Wire Garment Hangers From the Socialist Republic of Vietnam: Notice of Postponement of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-08

    ...: Initiation of Countervailing Duty Investigation, 77 FR 3737 (January 25, 2012). Currently, the preliminary... International Trade Administration Steel Wire Garment Hangers From the Socialist Republic of Vietnam: Notice of... (the Department) initiated the countervailing duty investigation of steel wire garment hangers from...

  9. 76 FR 47150 - Galvanized Steel Wire From the People's Republic of China and Mexico: Postponement of Preliminary...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-04

    ..., 76 FR 23548 (April 27, 2011). The current deadline for the preliminary determinations of these... International Trade Administration Galvanized Steel Wire From the People's Republic of China and Mexico... duty investigations of galvanized steel wire from the People's Republic of China (PRC) and Mexico....

  10. 77 FR 28354 - Steel Wire Garment Hangers From the People's Republic of China: Extension of Time Limit for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-14

    ... International Trade Administration Steel Wire Garment Hangers From the People's Republic of China: Extension of... Review of Steel Garment Wire Hangers from the People's Republic of China: Non-market Economy... People's Republic of China: Non-market Economy Questionnaire (February 6, 2012). On March 8, 2012,...

  11. 76 FR 28953 - Steel Wire Garment Hangers From the People's Republic of China: Extension of Time Limits for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-19

    ... International Trade Administration Steel Wire Garment Hangers From the People's Republic of China: Extension of... Administrative Review of Steel Garment Wire Hangers from the People's Republic of China: Non-Market Economy... Hangers from the People's Republic of China: Non-Market Economy Questionnaire (March 28, 2011). On...

  12. 75 FR 42685 - Steel Wire Garment Hangers From the People's Republic of China: Initiation of Anti-Circumvention...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-22

    ...In response to requests from the M&B Metal Products Co., Inc. (``Petitioner''), the Department of Commerce (``Department'') is initiating an anti-circumvention inquiry to determine whether certain imports of steel wire garment hangers from the Socialist Republic of Vietnam (``Vietnam'') are circumventing the antidumping duty order on steel wire garment hangers (``hangers'') from the People's......

  13. 77 FR 12553 - Steel Wire Garment Hangers From the People's Republic of China: Final Results and Final Partial...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-01

    ... Republic of China, 73 FR 58111 (October 6, 2008). \\2\\ See Steel Wire Garment Hangers From the People's... Administrative Review, 76 FR 66903 (October 28, 2011) (``Preliminary Results''). DATES: Effective Date: March 1..., 75 FR 68758, 68761 (November 9, 2010), unchanged in First Administrative Review of Steel Wire...

  14. 78 FR 57619 - Prestressed Concrete Steel Rail Tie Wire From Mexico, Thailand, and the People's Republic of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-19

    ... People's Republic of China, and Thailand: Initiation of Antidumping Duty Investigations, 78 FR 29325 (May... International Trade Administration Prestressed Concrete Steel Rail Tie Wire From Mexico, Thailand, and the... antidumping duty investigations of imports of prestressed concrete steel rail tie wire from Mexico,...

  15. 76 FR 72721 - Galvanized Steel Wire From China and Mexico; Scheduling of the Final Phase of Countervailing Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-25

    ... rules, as amended, 76 FR 61937 (Oct. 6, 2011) and the Commission's Handbook on Filing Procedures, 76 FR... Galvanized Steel Wire From China and Mexico; Scheduling of the Final Phase of Countervailing Duty and... galvanized steel wire, provided for in subheading 7217.20 of the Harmonized Tariff Schedule of the...

  16. Resistance to sliding of stainless steel multistranded archwires and comparison with single-stranded leveling wires.

    PubMed

    Rucker, Brian K; Kusy, Robert P

    2002-07-01

    The sliding mechanics of multistranded stainless steel (SS) wires were compared with single-stranded leveling wires in the passive and the active regions when dominated by classical friction and elastic binding, respectively. Tests were done under both dry and wet (human saliva) conditions. The round multistranded wires had 3- (triple) and 6-stranded (coax) configurations in nominal sizes of 15.5, 17.5, 19.5, and 21.5 mil; the rectangular wires had 3- (rect3) and 8-stranded (rect8) configurations in nominal sizes of 16 x 16, 16 x 22, 17 x 25, and 19 x 25 mil. While a ligature force of 150 g was applied and the second-order angulation was varied from -12 degrees to 12 degrees, each wire was translated relative to its bracket as the drawing force was digitally recorded. Linear regressions were fitted separately to the passive and the active regions. In the passive region, the kinetic coefficients of friction mu(k-FR) in the wet state were the same as, lower than, and higher than in the dry state for single-stranded SS, single-stranded nickel titanium (NiTi), and multistranded SS wires, respectively. Because the kinetic coefficients of friction were similar for multistranded and single-stranded SS wires, mu(k-FR) is a material property for SS and perhaps also for NiTi. In the active region, the frictional behaviors of multistranded SS wires compared with other leveling archwires are as follows: (1) coax wires had low friction, (2) triple and rect8 wires had midrange friction, and (3) rect3 wires had high friction. The coefficients of binding (mu(BI)) were not affected by saliva and were proportional to the wire stiffnesses. The resistance to sliding depended on wire stiffnesses to the extent that the differences in the mu(k-FR)'s of SS versus NiTi became unimportant shortly after binding occurred. PMID:12142900

  17. Characterization of hardened cylindrical C1018 steel rods ,,0.14%0.2% C, 0.6%0.9% Mn... using photothermal radiometry

    E-print Network

    Mandelis, Andreas

    of the thermophysical properties thermal conductivity and diffusivity of cylindrical C1018 heat-treated steel rodsCharacterization of hardened cylindrical C1018 steel rods ,,0.14%­0.2% C, 0.6%­0.9% Mn... using. The measurement results of several steel cylinders nominally hardened identically during a common heat

  18. Clinical Variability in Arch Wires: A Preliminary Study Evaluating Mechanical and Surface Characteristics of Two Different Sized Rectangular Stainless Steel Wires

    PubMed Central

    Vena, Alessandro; Carey, Jason; Badawi, Hisham

    2007-01-01

    Experimental characterization of arch wires has been performed in many previous studies; however with the advent of new arch wire materials being introduced, some new experimental methods and characterization are required. Since literature is available for comparison, this paper examines mechanical and physical characteristics of steel arch wires to quantify their variability in engineering terms. Furthermore, the effect of wire size on properties was evaluated using two of the most common wire sizes. Finally, manufacturing consistency was verified by testing samples from different lots. PMID:19662123

  19. 76 FR 33242 - Galvanized Steel Wire From the People's Republic of China: Postponement of Preliminary...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-08

    ... People's Republic of China: Initiation of Countervailing Duty Investigation, 76 FR 23564 (April 27, 2011... Determination Deadlines Pursuant to the Tariff Act of 1930, As Amended, 70 FR 24533 (May 10, 2005). Accordingly... International Trade Administration Galvanized Steel Wire From the People's Republic of China: Postponement...

  20. 77 FR 51514 - Steel Wire Garment Hangers From the Socialist Republic of Vietnam: Preliminary Affirmative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-24

    ... the People's Republic of China, 70 FR 5606, 5607 (February 3, 2005). \\17\\ See Steel Wire Garment... Less Than Fair Value and Postponement of Final Determination, 77 FR 46044 (August 2, 2012... Hanger Limited, and TJ Co., Ltd. See, e.g., Preliminary Determination, 77 FR at 46047-48, 46053 n....

  1. 78 FR 54272 - Steel Wire Garment Hangers From China; Institution of a Five-Year Review

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-03

    ... Federal employees, and Commission rule 201.15(b) (19 CFR 201.15(b)), 73 FR 24609 (May 5, 2008). This... domestic producers of steel wire garment hangers. (5) The Order Date is the date that the antidumping duty.../USITC No. 13-5-295, expiration date June 30, 2014. Public reporting burden for the request is...

  2. 76 FR 66895 - Steel Wire Garment Hangers From the People's Republic of China: Affirmative Final Determination...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-28

    ... Antidumping Duty Order: Steel Wire Garment Hangers from the People's Republic of China, 73 FR 58111 (October 6... Antidumping Duty Order and Extension of Final Determination, 76 FR 27007 (May 10, 2011) (``Preliminary...\\ See Preliminary Determination, 76 FR at 27008. See also Angang's Questionnaire Response dated...

  3. 76 FR 27007 - Steel Wire Garment Hangers From the People's Republic of China: Affirmative Preliminary...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-10

    ... of Antidumping Duty Order: Steel Wire Garment Hangers from the People's Republic of China, 73 FR... of China: Initiation of Anti-Circumvention Inquiry, 75 FR 42685 (July 22, 2010) (``Initiation Notice... Determination: Coated Free Sheet Paper from the People's Republic of China, 72 FR 30758, 30760 (June 4,...

  4. 75 FR 68758 - Steel Wire Garment Hangers From the People's Republic of China: Preliminary Results and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-09

    ... Administrative Review: Petroleum Wax Candles from the People's Republic of China, 72 FR 52355, 52356 (September... Antidumping Duty Order: Steel Wire Garment Hangers from the People's Republic of China, 73 FR 58111 (October 6... to Request Administrative Review, 74 FR 50772 (October 1, 2009). On October 30, 2009, certain...

  5. 77 FR 46044 - Steel Wire Garment Hangers From the Socialist Republic of Vietnam: Preliminary Determination of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-02

    ... and Taiwan: Initiation of Antidumping Duty Investigations, 77 FR 3731 (January 25, 2012) (``Initiation Notice''). \\3\\ See id., 77 FR at 3735-36. On February 13, 2012, the United States International Trade... and 731-TA-1197-1198 (Preliminary), Steel Wire Garment Hangers From Taiwan And Vietnam, 77 FR...

  6. 75 FR 32747 - Prestressed Concrete Steel Wire Strand from Mexico: Rescission of Antidumping Duty Administrative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-09

    ...; Opportunity To Request Administrative Review, 75 FR 1333 (January 11, 2010). On January 29, 2010, in.... and Deacero S.A. de C.V. See Initiation of Antidumping Duty Administrative Review, 75 FR 9874 (March 4... INTERNATIONAL TRADE ADMINISTRATION Prestressed Concrete Steel Wire Strand from Mexico: Rescission of...

  7. 78 FR 75545 - Prestressed Concrete Steel Rail Tie Wire From the People's Republic of China: Preliminary...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-12

    ... China, and Thailand: Initiation of Antidumping Duty Investigations, 78 FR 29325, 29330 (May 20, 2013... Countervailing Duty Investigations, 76 FR 61042 (October 3, 2011). International Trade Commission (``ITC... International Trade Administration Prestressed Concrete Steel Rail Tie Wire From the People's Republic of...

  8. 77 FR 17418 - Galvanized Steel Wire From the People's Republic of China: Final Affirmative Countervailing Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-26

    ... Determination, 76 FR 68407 (November 4, 2011); see also Galvanized Steel Wire From Mexico: Preliminary Determination of Sales at Less Than Fair Value and Postponement of Final Determination, 76 FR 68422 (November 4... Determination and Alignment of Final Determination With Final Antidumping Determination, 76 FR 55031...

  9. 77 FR 66952 - Steel Wire Garment Hangers From the People's Republic of China: Antidumping Duty Administrative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-08

    ... Wells Hanger Co., Ltd., Hong Kong Wells Ltd., (USA), and Hong Kong Wells Ltd.,\\1\\ did not sell subject... that Shanghai Wells Hanger Co., Ltd. (``Shanghai Wells''), Hong Kong Wells Ltd. (``HK Wells'') and Hong..., 75 FR 68758, 68761 (November 9, 2010), unchanged in First Administrative Review of Steel Wire...

  10. Development of welding wire for high-purity austenitic stainless steels

    SciTech Connect

    Han, H.Y.; Sun, Z.

    1999-02-01

    High-purity austenitic stainless steels have been developed for nuclear fuel reprocessing applications. To produce nuclear fuel reprocessing facilities, i.e., process vessels and pipeworks, welded joints are necessary, thus stimulating a need for filler metals. This paper discusses the development of a high-purity welding wire. As filler metal, such welding wire should provide not only good weldability, but should also be able to produce weldments having mechanical and corrosion properties equivalent to those of the base metal. According to these criteria, potential filler metals were evaluated. Based on this investigation, a high-purity austenitic stainless steel welding wire was developed that can be used to produce satisfactory weldments in terms of weldability, mechanical properties and, most importantly, corrosion properties.

  11. Simulating microstructure development in high-carbon steel cross-wire welding

    SciTech Connect

    Pan, R.; Watt, D.F.

    1995-12-01

    Cross-wire welding is a resistance welding process for joining steel bars into steel grids. The wire meshes discussed in this paper are made from high-carbon steel, which gives the product good wear resistance, but increases the difficulty of welding.Cracks sometimes develop during or after welding in high-carbon steel cross-wires unless an appropriate postweld heating schedule is applied. The purpose of the computer simulation is to predict the microstructure development, especially in the heat-affected zone, to control the properties of the final product. An empirical grain-growth equation was derived from Jominy test samples to predict the initial temperature contour in the heat-affected zone at the end of welding current input. A two-dimensional postweld heating algorithm has been developed to simulate the thermal history of the heat-affected zone during the cooling stages. A reaction kinetics algorithm based on the hardenability work of Kirkaldy and coworkers has been modified to fit the resistance-welded high-carbon steel bars. The rate and extent of the decomposition of austenite into its daughter products in the welds were calculated. Experimental observation of microstructures in welded bars with different postweld current schedules was carried out. The algorithm was found to be in general agreement with the experimental results.

  12. Multipass Narrow Gap of Heavy Gauge Steel with Filler Wire

    NASA Astrophysics Data System (ADS)

    Markushov, Y.; Evtihiev, N.; Grezev, N.; Murzakov, M.

    This article describes method of heavy gauge welding using laser radiation as beam source of energy. The article contains the results of single-pass laser-arc welding and multipass laser welding with filler wire; highlight benefits and drawbacks of each welding method. The results obtained were compared with the traditional methods of welding of the same thickness.

  13. 76 FR 23548 - Galvanized Steel Wire From the People's Republic of China and Mexico: Initiation of Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-27

    ...investigations covers galvanized steel wire which is a cold-drawn carbon quality steel product in coils, of solid...dipping or electroplating). Steel products to be included in...tungsten, or 0.02 percent of boron, or 0.10 percent of...

  14. 76 FR 72721 - Galvanized Steel Wire From China and Mexico; Scheduling of the Final Phase of Countervailing Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-25

    ...cold- drawn carbon quality steel product in coils, of solid...hot-dipping or electroplating). Steel products to be included in the...tungsten, or 0.02 percent of boron, or 0.10 percent of molybdenum...investigation is galvanized steel wire in coils of 15 feet...

  15. 77 FR 17430 - Galvanized Steel Wire From the People's Republic of China: Final Determination of Sales at Less...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-26

    ... Determination, 76 FR 68407 (November 4, 2011) (``Preliminary Determination''). \\2\\ See Galvanized Steel Wire...: Circular Welded Carbon Quality Steel Pipe from the People's Republic of China, 73 FR 31970, 31971-31972...-Rolled Carbon-Quality Steel Products from the Russian Federation, 65 FR 5510, 5518 (February 4,...

  16. Radiation Hydrodynamics of Stainless Steel Wire Arrays on the Z Accelerator

    SciTech Connect

    Davis, J.; Dasgupta, A.; Thornhill, J. W.; Giuliani, J.; Clark, R. W.; Whitney, K.; Coverdale, C. A.; Lepell, D.; Jones, B.; Deeney, C.

    2009-01-21

    Experiments on the Z accelerator with nested stainless steel wire arrays produced K-shell x-ray yields exceeding 50 kJ in the energy range 5.5 to 8 keV. Stainless steel (Z = 24-28) can barely be ionized to the K-shell on Z, and the spectra are therefore sensitive to the details of the implosion. We have simulated the implosion dynamics of stainless steel wire arrays with diameters ranging from 4.5 to 8.0 centimeters using a detailed configuration non-LTE radiation hydrodynamics model. Reasonable agreement with total and K-shell experimental yields was obtained for the various array configurations. A comparison is made between the 1-D and 2-D simulations for shot Z-578.

  17. Ablation dominated implosion dynamics of aluminum and stainless steel nested cylindrical wire arrays

    SciTech Connect

    Williamson, K. M.; Kantsyrev, V. L.; Esaulov, A. A.; Safronova, A. S.; Ouart, N. D.; Yilmaz, F. M.; Shrestha, I. K.; Shlyaptseva, V.; McBride, R. D.; Chalenski, D. A.; Douglass, J. D.; Greenly, J. B.; Hammer, D. A.; Kusse, B. R.

    2009-01-15

    The results of experiments with combined aluminum (Al) and stainless steel (SS) alloy 304, nested wire arrays from the 1 MA COBRA generator at Cornell University are presented. The loads studied consisted of a 6 mm diameter inner array and a 13 mm diameter outer array with a different material in each array: SS or aluminum. Al implodes before SS in all loads studied, even when Al was on the inner array. The new wire ablation dynamic model and spectroscopic modeling are used to interpret these data. The observed implosion dynamics are likely a result of the higher ablation rate of Al. These initial results suggest that combining wire materials with different ablation rates in wire array loads could be developed into a useful technique for x-ray pulse shaping and radiation yield optimization.

  18. Formation quality optimization of laser hot wire cladding for repairing martensite precipitation hardening stainless steel

    NASA Astrophysics Data System (ADS)

    Wen, Peng; Feng, Zhenhua; Zheng, Shiqing

    2015-01-01

    Laser cladding is an advantaged repairing technology due to its low heat input and high flexibility. With preheating wire by resistance heat, laser hot wire cladding shows better process stability and higher deposition efficiency compared to laser cold wire/powder cladding. Multi-pass layer were cladded on the surface of martensite precipitation hardening stainless steel FV520B by fiber laser with ER410NiMo wire. Wire feed rate and preheat current were optimized to obtain stable wire transfer, which guaranteed good formation quality of single pass cladding. Response surface methodology (RSM) was used to optimize processing parameters and predict formation quality of multi-pass cladding. Laser power P, scanning speed Vs, wire feed rate Vf and overlap ratio ? were selected as the input variables, while flatness ratio, dilution and incomplete fusion value as the responses. Optimal clad layer with flat surface, low dilution and no incomplete fusion was obtained by appropriately reducing Vf, and increasing P, Vs and ?. No defect like pore or crack was found. The tensile strength and impact toughness of the clad layer is respectively 96% and 86% of those of the substrate. The clad layer showed nonuniform microstructure and was divided into quenched areas with coarse lath martensite and tempered areas with tempered martensite due to different thermal cycles in adjacent areas. The tempered areas showed similar hardness to the substrate.

  19. Improving Cleanliness of 95CrMo Drill Rod Steel by Slag Refining

    NASA Astrophysics Data System (ADS)

    Wang, Linzhu; Yang, Shufeng; Li, Jingshe; Wu, Tuo; Liu, Wei; Xiong, Jiaze

    2015-10-01

    Industrial experiments were performed to improve the cleanliness of 95CrMo drill rod steel by slag refining. Higher steel cleanliness, lower corrosion, and small inclusions were obtained using the optimal slag composition (pctCaO/pctSiO2 = 3.7 to 4, pctCaO/pctAl2O3 = 6 to 8). Layered composite inclusions formed during vacuum decarburizing refining. CaS first precipitated around the spinel and subsequently formed inclusions in which solid CaS-CaO wrapped around the Al2O3-MgO-SiO2-CaO system as the modification and diffusion progressed. The thermodynamic equilibrium between slag and liquid 95CrMo steel at 1873 K (1600 °C) was also studied to understand the effect of slag composition on the oxygen content and absorption capacity for Al2O3. A mathematical model based on an investigation of slag viscosity and the interfacial tension between slag and inclusions was used to predict the size of critical inclusions for different slags. The evolution of typical inclusions is discussed in terms of the study of reactions between slag and steel.

  20. Development of Nb 3Sn superconducting wires for high field magnets at Kobe Steel and JASTEC

    NASA Astrophysics Data System (ADS)

    Miyazaki, Takayoshi; Miyatake, Takayuki; Kato, Hiroyuki; Zaitsu, Kyoji; Murakami, Yukinobu; Hase, Takashi; Hamada, Mamoru

    2008-07-01

    Research and development activities and some recent results related to Nb 3Sn superconducting wires in Kobe Steel, Ltd. (KSL) and Japan Superconductor Technology Inc. (JASTEC) are introduced. First, an outline of the activities is described briefly from a historical point of view. Following that, improvements in the characteristics (i.e., critical current density ( Jc), n-value and mechanical properties) of bronze-processed Nb 3Sn wires are reviewed. Finally, the status of development for the Ta-Sn powder-in-tube (TS-PIT) process is briefly discussed.

  1. Formation Mechanism of SiO2-Type Inclusions in Si-Mn-Killed Steel Wires Containing Limited Aluminum Content

    NASA Astrophysics Data System (ADS)

    Wang, Kunpeng; Jiang, Min; Wang, Xinhua; Wang, Ying; Zhao, Haoqian; Cao, Zhanmin

    2015-10-01

    The origin, formation mechanism, and evolution of SiO2-type inclusions in Si-Mn-killed steel wires were studied by pilot trials with systematical samplings at the refining ladle, casting tundish, as-cast bloom, reheated bloom, and hot-rolled rods. It was found that the inclusions in tundish were well controlled in the low melting point region. By contrast, MnO-SiO2-Al2O3 inclusions in the as-cast bloom were with compositions located in the primary region of SiO2, and most CaO-SiO2-Al2O3-MnO inclusions lied in primary phase region of anorthite. Therefore, precipitation of SiO2 particles in MnO-SiO2-Al2O3 inclusions can be easier than in CaO-SiO2-Al2O3-MnO inclusions to form dual-phase inclusions in the as-cast bloom. Thermodynamic calculation by the software FactSage 6.4 (CRCT-ThermFact Inc., Montréal, Canada) showed that mass transfer between liquid steel and inclusions resulted in the rise of SiO2 content in inclusions from tundish to as-cast bloom and accelerated the precipitation of pure SiO2 phase in the formed MnO-SiO2-Al2O3 inclusions. As a result, the inclusions characterized by dual-phase structure of pure SiO2 in MnO-SiO2-Al2O3 matrix were observed in both as-cast and reheated blooms. Moreover, the ratio of such dual-phase SiO2-type inclusions witnessed an obvious increase from 0 to 25.4 pct before and after casting, whereas it changed little during the reheating and rolling. Therefore, it can be reasonably concluded that they were mainly formed during casting. Comparing the evolution of the inclusions composition and morphology in as-cast bloom and rolled products, a formation mechanism of the SiO2-type inclusions in wire rods was proposed, which included (1) precipitation of SiO2 in the formed MnO-SiO2-Al2O3 inclusion during casting and (2) solid-phase separation of the undeformed SiO2 precipitation from its softer MnO-SiO2-Al2O3 matrix during multipass rolling.

  2. Comparison and analysis of the efficiency of heat exchange of copper rod and copper wires current lead

    NASA Astrophysics Data System (ADS)

    Fang, J.; Yu, T.; Li, Z. M.; Wei, B.; Qiu, M.; Zhang, H. J.

    2013-11-01

    Current leads are the key components that connect the low-temperature and high temperature parts of the cryogenic system. Owing to the wide range of temperatures, current leads are the main sources of heat leakage. Since the HTS tapes have no resistance and the generated Joule heat is almost zero, HTS binary current leads can reduce heat leakage compared to the conventional leads. However, heat will still be generated and conducted to the cryogenic system through the copper parts of the HTS current leads. In order to reduce heat leakage by the copper parts of the HTS current leads, this paper presents an optimized design of the copper parts of HTS binary current leads. Inside the leads, the copper wires were applied as an alternative to the copper rod without changing the overall dimensions. Firstly, the differential function of heat transfer was derived. By solving the function, the optimum number of the copper wires and the temperature distribution of two different current leads were gotten. Then the experiment of the temperature distribution was done, and the experimental results were basically the same with the calculative results. The simulation and related experiments proved that the copper wire can increase security margins and reduce maximum temperatures under the same shunt current.

  3. 77 FR 70993 - Steel Wire Garment Hangers From the People's Republic of China: 2011-2012 Initiation of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-28

    ... Order: Steel Wire Garment Hangers from the People's Republic of China, 73 FR 58111 (October 6, 2008). \\2... Initiation Checklist,'' dated concurrently with this notice. \\9\\ See 19 CFR 351.214(g)(1)(i)(A). \\10\\...

  4. 78 FR 75544 - Prestressed Concrete Steel Rail Tie Wire From Mexico: Preliminary Determination of Sales at Less...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-12

    ... Countervailing Duty Investigations, 76 FR 61042 (October 3, 2011). International Trade Commission (``ITC... International Trade Administration Prestressed Concrete Steel Rail Tie Wire From Mexico: Preliminary.... SUMMARY: The Department of Commerce (``Department'') preliminarily determines that prestressed...

  5. 75 FR 1755 - Prestressed Concrete Steel Wire Strand From the People's Republic of China: Postponement of Final...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-13

    ... From the Federal Register Online via the Government Printing Office DEPARTMENT OF COMMERCE International Trade Administration Prestressed Concrete Steel Wire Strand From the People's Republic of China: Postponement of Final Determination AGENCY: Import Administration, International Trade...

  6. Development of cored wires for improving the abrasion wear resistance of austenitic stainless steel

    NASA Astrophysics Data System (ADS)

    Dallaire, S.; Levert, H.

    1997-12-01

    Arc-sprayed coatings are an attractive means to protect components from abrasive wear provided they contain enough hard phases. Because of their hardness and toughness, 316L-TiB2 cermets were selected as the basis for developing wear-resistant coatings. Cored wires composed of type 304 stainless steel sheaths filled with 10 to 65 wt% TiB2,1 to 15 wt% additives, and the balance with 316L stainless steel were fabricated and arc-sprayed with air. The arc-sprayed stainless steel-TiB2 coatings were abrasion tested and the volume loss measured with an optical profiloineter. The volume loss decreased as the proportion of TiB2 increased. However, large differences in volume loss between coatings that contain about the same volumetric proportion of hard phases cannot be explained by a linear relationship. An inverse rule of mixing was proposed and found useful in determining the influence of different additives. Tin, added in the core as a fugitive liquid transfer agent, was the most powerful additive for improving the wear resistance of stainless steel-base coatings. These advanced arc-sprayed stainless steel-TiB2 coatings exhibit greater wear resistance than those obtained by arc spraying commercial solid and cored wires.

  7. Spatially Resolved Synthetic Spectra from 2D Simulations of Stainless Steel Wire Array Implosions

    SciTech Connect

    Clark, R. W.; Giuliani, J. L.; Thornhill, J. W.; Chong, Y. K.; Dasgupta, A.; Davis, J.

    2009-01-21

    A 2D radiation MHD model has been developed to investigate stainless steel wire array implosion experiments on the Z and refurbished Z machines. This model incorporates within the Mach2 MHD code a self-consistent calculation of the non-LTE kinetics and ray trace based radiation transport. Such a method is necessary in order to account for opacity effects in conjunction with ionization kinetics of K-shell emitting plasmas. Here the model is used to investigate multi-dimensional effects of stainless steel wire implosions. In particular, we are developing techniques to produce non-LTE, axially and/or radially resolved synthetic spectra based upon snapshots of our 2D simulations. Comparisons between experimental spectra and these synthetic spectra will allow us to better determine the state of the experimental pinches.

  8. 76 FR 14918 - Steel Wire Garment Hangers From the People's Republic of China: Partial Rescission of Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-18

    ... And Export (HongKong) Co., Ltd.; Century Distribution System (Shenzhen) Ltd.; Changzhou Fortune... International Trade Administration Steel Wire Garment Hangers From the People's Republic of China: Partial... wire garment hangers from the People's Republic of China (``PRC'') covering the period October 1,...

  9. Effect of microalloying on the strength of high carbon wire steels

    NASA Astrophysics Data System (ADS)

    Miller, Stephanie L.

    Microalloying additions of V, Nb, and N were investigated as means of increasing strength of eutectoid steels for wire applications. In order to examine the effects of microalloying additions during several stages of wire processing, continuous cooling experiments with and without deformation as well as patenting simulations were conducted using a Gleeble® 3500 thermomechanical simulator. Continuous cooling was performed from industrial austenitizing (1093 °C) and laying head (950 °C and 880 °C) temperatures, at rates ranging from 1 50 °C/s. Deformation was induced via hot torsion testing, which was followed by continuous cooling from 950 °C at rates of 5, 10, and 25 °C/s. Industrial wire patenting was simulated by austenitizing at 1093 °C or 950 °C for 30 sec, then rapid cooling to isothermal transformation temperatures of 575, 600, 625, and 650 °C for 15 sec before cooling to room temperature. Metallography, Vickers hardness, pearlite colony size and pearlite interlamellar spacing (ILS) measurements were used to examine the effects of these treatments. Continuous cooling transformation (CCT) curves were constructed for four steels: 1080, V, V+N, and V+Nb. In the V-microalloyed steel, additional N accelerated pearlite transformation and Nb delayed pearlite transformation. Observed N effects are in agreement with the theory of VN nucleating grain boundary ferrite and accelerating pearlite transformation, proposed by Han et al. [1995], and also consistent with observations by Brownrigg and Prior [2002]. Delay of transformation temperatures has been observed due to Nb effects [De Ardo, 2009]. A larger delay observed with higher austenitizing temperatures suggests that Nb precipitates may not be as effective at delaying transformation. V strengthening effects were observed in all microalloyed steels using a model that predicted hardness of eutectoid steels by incorporating colony size and ILS measurements, with maximum strengthening observed for the V+N steel. The V+Nb steel was found to have the greatest refinement of colony size and ILS, and subsequently higher hardness among the test alloys in both the undeformed and deformed conditions, consistent with the delay of pearlite transformation. In general, undeformed samples had much higher hardness values. Patenting simulations performed on microalloyed steels showed the potential for increased strength with V addition with a sufficiently high austenitizing temperature. All microalloyed steels showed higher hardness than 1080 when austenitized at 1093 °C, with V and V+Nb having the greatest strength increase. The effect was not observed with a 950 °C reheat potentially related to insufficient dissolution of precipitates.

  10. 76 FR 27304 - Certain Steel Threaded Rod From the People's Republic of China: Notice of Court Decision Not in...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-11

    ... Fair Value, 74 FR 8907 (February 27, 2009) (``Final Determination'') and Certain Steel Threaded Rod from the People's Republic of China: Notice of Antidumping Duty Order, 74 FR 17154 (April 14, 2009... Sawblades Mfrs. Coalition v. United States, 626 F.3d 1374 (Fed. Cir. 2010) (``Diamond Sawblades''),...

  11. 78 FR 66330 - Certain Steel Threaded Rod From the People's Republic of China; Final Results of Third...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-05

    ... Antidumping Duty Administrative Review; 2011-2012, 78 FR 21101 (April 9, 2013) (``Preliminary Results... FR 4389 (January 22, 2013). \\13\\ See Certain Steel Threaded Rod from the People's Republic of China: Notice of Antidumping Duty Order, 74 FR 17154 (April 14, 2009) (``Order''). For a full description of...

  12. Specification for corrosion-resisting chromium and chromium-nickel steel bare and composite metal cored and stranded arc welding electrodes and welding rods

    SciTech Connect

    Not Available

    1983-01-01

    This specification prescribes requirements for corrosion or heat resisting chromium and chromium-nickel steel electrodes and welding rods. These electrodes and welding rods are normally used for arc welding and include those alloy steels designated as corrosion or heat-resisting chromium and chromium-nickel steels, in which chromium exceeds 4.0 percent and nickel does not exceed 50.0 percent.

  13. THE EFFECTS OF POLARIZATION UPON THE STEEL WIRE-NITRIC ACID MODEL OF NERVE ACTIVITY.

    PubMed

    Bishop, G H

    1927-11-20

    The active process in a short length of steel wire passivated by 65 per cent nitric acid has been observed under the influence of a polarizing current, and the form of the potential recorded by the cathode ray oscillograph. In the passive wire, 80 per cent of the total potential drop takes place at the anode, 20 per cent at the cathode. The change from active to passive states, as measured by the potential change, is very abrupt compared to the duration of activity and the potential curve at a point on the wire is probably almost rectangular. The duration of the refractory state is decreased at the anode and increased at the cathode, as in nerve. This fact is against the idea that reactivity after passivation results from a partial reduction of an oxide layer. Soft iron wire passivated by anodal polarization repassivates after activation in acid of a dilution that fails to passivate it initially. It soon becomes rhythmic with a very short refractory phase, and then reacts continuously. Such a wire exhibits a very sharp alternation between a dark brown oxide coat during activity, and a bright clean surface during passivation. A passive steel wire in nitric acid shows many of the characteristics of an inert electrode such as platinum, and it may be inferred that, superposed upon the primary passivation potential, there exists an electrode or oxidation-reduction potential equilibrium between the effects of the various constituents of the solution. It is suggested that the phenomena of nerve-like reactivity in this system may involve an alternation between two protective coatings of the steel wire. During activity, the surface becomes mechanically coated with a brown oxide. If this coating does not adhere, due to gas convection or to rapid solution of the oxide, passivation does not result. Under sufficiently intense oxidizing conditions, a second oxide coat may form in the interstices of the first, and cover the surface as the first coating dissolves off. This furnishes the electrochemical protection of passivation, which is followed by the gradual attainment of electrode equilibrium with the solution. PMID:19872388

  14. 76 FR 68422 - Galvanized Steel Wire From Mexico: Preliminary Determination of Sales at Less Than Fair Value and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-04

    ... notified the Department of its finding. See Galvanized Steel Wire from China and Mexico, 76 FR 29266 (May... Less Than Fair Value: Certain Cut-to-Length Carbon Steel Plate from South Africa, 62 FR 61731, 61732-33... Investigations, 76 FR 23548 (April 27, 2011) (Initiation Notice). The Petitioners in this investigation are...

  15. A novel TMR-based MFL sensor for steel wire rope inspection using the orthogonal test method

    NASA Astrophysics Data System (ADS)

    Wu, B.; Wang, Y. J.; Liu, X. C.; He, C. F.

    2015-07-01

    Magnetic flux leakage (MFL) sensors, with their compact configuration and high sensitivity to small defects, have attracted much attention in recent years for the non-destructive testing of ferromagnetic structures. Tunnel magneto-resistive (TMR) devices have superior performances in sensitivity and linear operation range over conventional magneto-resistive devices. In this paper, a commercial TMR device is employed for developing an electromagnet-based MFL sensor. The electromagnet magnetizer includes Helmholtz-like coils together with a custom-made magnetic shield. The orthogonal test method is applied to aid the structural parameter optimization to the magnetizer based on the finite element analysis results of magnetic field distribution. In this study a prototype of a TMR-based MFL sensor is developed, and its performances on detecting various types of defects are tested on a scanning apparatus. The experimental results show that the MFL signal induced by a blind hole with dimensions of 0.3 mm in both depth and diameter is detectable. In addition, two adjacent notches located more than 2.0 mm from each other can be clearly distinguished from the received MFL signal. The detectable angular detection range for a single TMR device is estimated as 52° in the tested linear shaft rod. The consistency between the simulated and received MFL signal induced by a row of notches inspires confidence in the proposed sensor design method, which in the future can be transplanted for TMR-based sensor array design. Finally, the TMR-based MFL sensor is used for detecting a flaw of a single broken wire with a diameter of 0.5 mm, and the induced MFL signal can be clearly recognized from the oscillation signal that is generated by the twisted rope surface. Therefore, the presented TMR-based MFL sensor has great potential for steel wire rope inspection with enhanced sensitivity to small defects, and it is capable of being integrated into production lines due to its compact configuration.

  16. Fuzzy logic modeling and control of steel rod quenching after hot rolling

    NASA Astrophysics Data System (ADS)

    Giorleo, G.; Memola Capece Minutolo, F.; Sergi, V.

    1997-10-01

    Reinforced concrete rod produced by European Community countries must comply with standards that establish minimum strength and tensile properties along with other technological and geometrical characteristics; however, possible variability within the assigned limits is not specified. Consequently, a number of manufacturing methods are now used, with the result that over time the mechanical properties of these products vary widely. Increased competition has led to the development of new procedures incorporating both process and quality control. One example is a process based on the heat treatment undergone by the metal bars leaving the final stand of the rolling mill train. In this way, the mechanical and technological properties can be graduated, thereby enhancing strength (particularly yield point) without altering the deformability of the material. This procedure does away with the need to alter the chemical composition of the steel used to manufacture the rods. Process adjustment still relies on the experience of the production manager, however. This paper examines the possibility of applying fuzzy logic computer techniques to the heat treatment process in order to render it more rational and independent of operator unreliability.

  17. An explanation for the anomalous wave profiles obtained in Composition B-3 impacted by flat nosed steel rods

    NASA Astrophysics Data System (ADS)

    James, Hugh; Gustavsen, Richard; Dattelbaum, Dana

    2015-06-01

    When firing flat nosed steel rods into the 60/40 RDX/TNT explosive Composition B-3, Gustavsen et al. (``Initiation of Composition B-3 by impact of flat nosed rods,'' in 15th Int. Det. Symp.) found an apparently anomalous ``hump'' in particle velocity wave profiles. The hump occurred on the center-line established by the rod, and at relatively late times, > 1 ?s, after detonation onset. Several explanations, including that of a late time reaction, were postulated. This report will present evidence that the anomalous late time ``hump'' is due to the arrival of rarefaction waves from the rod periphery. Simple analytic calculations and reactive-burn hydro-code calculations will be presented supporting this hypothesis.

  18. Effect of heat treatment on stainless steel orthodontic wires.

    PubMed

    Cuoghi, Osmar Aparecido; Kasbergen, Geraldo Francisco; Santos, Paulo Henrique dos; Mendonça, Marcos Rogério de; Tondelli, Pedro Marcelo

    2011-01-01

    This study evaluated the effect of heat treatment on CrNi stainless steel orthodontic archwires. Half of forty archwires of each thickness - 0.014" (0.35 mm), 0.016" (0.40 mm), 0.018" (0.45 mm) and 0.020" (0.50 mm) (totalling 160 archwires) - were subjected to heat treatment while the remainder were not. All of the archwires had their individual thickness measured in the anterior and posterior regions using AutoCad 2000 software before and after compressive and tensile strength testing. The data was statistically analysed utilising multivariance ANOVA at a 5% significance level. All archwires without heat treatment that were subjected to tensile strength testing presented with anterior opening, which was more accentuated in the 0.020" archwires. In the posterior region, the opening produced by the tensile force was more accentuated in the archwires without heat treatment. There was greater stability in the thermally treated archwires, especially those subjected to tensile strength testing, which indicates that the heat treatment of orthodontic archwires establishes a favourable and indispensable condition to preserve the intercanine width. PMID:21359492

  19. Dilution control in single-wire stainless steel submerged arc cladding

    SciTech Connect

    Kotecki, D.J., Ogborn, J.S.

    1994-12-31

    Work by Jackson and others has shown that dilution of single weld beads can be controlled to a limited extent by choice of welding parameters in single wire submerged arc overlay. Inquiries from fabricators about limiting dilution in single-wire submerged arc cladding continue to be received. Accordingly, a procedure development program was undertaken to provide technical support to fabricators. A table, with a lead screw for accurately and reproducibly indexing the stepover from bead to bead, was constructed. Overlays, at least eight beads wide, were deposited on 1-in. thick mild steel using ER309L wire, in sizes 1/8, 3/32, and 5/64- in. More than 50 different cladding conditions have been examined. A number of overlays were made with 1/8 in. wire at 80 ipm wire feed speed (about 16.5 lb/h deposition rate), DCEP, with a chromium-compensating flux. Voltage, tilt of the electrode back towards the previous bead, and stepover were principle variables. In single-wire submerged arc cladding with ER309L, stepover is a very important variable in determining dilution and ferrite. However, if too little stepover is used, lack of fusion of the overlay with the base metal results. Use of DCEN can be helpful in limiting dilution and obtaining ferrite, but many fluxes do not perform well on DCEN. A chromium-adding flux designed for DCEN can be of assistance in limiting dilution and obtaining ferrite over a broader range of stepovers. Quantitative dilution data are presented for a variety of single-layer overlay conditions.

  20. Corrosion damage estimation in multi-wire steel strands using guided ultrasonic waves

    NASA Astrophysics Data System (ADS)

    Farhidzadeh, Alireza; Ebrahimkhanlou, Arvin; Salamone, Salvatore

    2015-04-01

    This study presents a nondestructive evaluation method based on guided ultrasonic waves (GUW) to estimate corrosion in steel strands. Steel strands are one of the main components in constructing prestressed structures. Hidden corrosion in these structures has become a concern for designers, owners and regulators as it can eventuate in disastrous failure. In this study, a reference-free algorithm is proposed to quantify the extent of corrosion through estimating the cross section loss using dispersion curves and the velocity of certain frequency components in the waveform. Experimental test setups were designed to accelerate corrosion on two similarly loaded steel strands. One strand was embedded in concrete (to simulate a prestressed concrete beam) and the other was free (to resemble a prestressed cable). Visual inspection, halfcell potential, and mass loss measurements were employed as supporting evidences for the state of corrosion. An uncertainty analysis was also carried out to investigate how close this method can estimate the diameter of wires in a strand. The method could reasonably estimate the diameter of the wires without a reference baseline.

  1. Investigation about the Chrome Steel Wire Arc Spray Process and the Resulting Coating Properties

    NASA Astrophysics Data System (ADS)

    Wilden, J.; Bergmann, J. P.; Jahn, S.; Knapp, S.; van Rodijnen, F.; Fischer, G.

    2007-12-01

    Nowadays, wire-arc spraying of chromium steel has gained an important market share for corrosion and wear protection applications. However, detailed studies are the basis for further process optimization. In order to optimize the process parameters and to evaluate the effects of the spray parameters DoE-based experiments had been carried out with high-speed camera shoots. In this article, the effects of spray current, voltage, and atomizing gas pressure on the particle jet properties, mean particle velocity and mean particle temperature and plume width on X46Cr13 wire are presented using an online process monitoring device. Moreover, the properties of the coatings concerning the morphology, composition and phase formation were subject of the investigations using SEM, EDX, and XRD-analysis. These deep investigations allow a defined verification of the influence of process parameters on spray plume and coating properties and are the basis for further process optimization.

  2. [A Case of Transorbital Penetrating Brain Injury Caused by a Steel Wire Entirely Embedded in the Brain Parenchyma].

    PubMed

    Kin, Kyohei; Ono, Yasuhiro; Fujimori, Takeshi; Kuramoto, Satoshi; Katsumata, Atsushi; Goda, Yuji; Kawauchi, Masamitsu

    2015-10-01

    Penetrating brain injury(PBI)is very rare in Japan. Because there is a very wide variety of pathological condition of PBI, the guideline for the treatment of PBI has not been established yet. We report the unique case of PBI caused by a steel wire piece completely embedded in the brain parenchyma. A 75-year-old man was brought to the emergency department due to ocular injury caused by a steel wire piece. Neurological examination revealed only left visual disturbance. CT scan revealed a steel wire piece located intraparenchymally between the left frontal lobe and the ventricles, but digital subtraction angiography showed no significant vascular injury in the surrounding structures. We performed an open surgery and removed the steel wire piece. Because the steel wire piece was completely embedded in the brain, we used intraoperative X-ray fluoroscopy to choose a less invasive approach for the brain. The patient suffered no additional neurological deficit and no sign of cerebral infection or seizure after surgery. He was discharged after a 4-week administration of antibiotics. In most cases of PBI caused by low velocity injury, foreign bodies are not completely embedded in the brain except for remnants after surgical removal. This is the first report of low velocity PBI caused by a foreign body completely embedded in the brain. PMID:26435372

  3. Arc spraying of nano-structured wire on carbon steel: examination of coating microstructures

    SciTech Connect

    Al Askandarani, A.; Hashmi, M. S. J.; Yilbas, B. S.

    2011-01-17

    Arc spraying of nano-structured wire (TAFA 95MX) onto carbon steel is carried out. The workpieces coated were heat treated at temperature similar to the operating temperature of the hot-path components of power gas turbines. The morphological and microstructural changes in the coating are examined using optical and Scanning Electron Microscope (SEM). The surface roughness and microhardness of the resulting coatings are measured. It is found that the formation of dimples like structure at surface increased the surface roughness of the coating. The microhardness of the resulting coating is significantly higher than the base material hardness. Heat treatment does not alter the microstructure and microhardness of the coating.

  4. Mechanisms of electrostimulated plasticity during wire-drawing of stainless steel Kh18N10T

    NASA Astrophysics Data System (ADS)

    Tsellermaer, V. Ya.; Gromov, V. E.; Kornienko, L. A.; Chubenko, T. Yu.; Aponasenkova, O. V.

    1991-11-01

    To clarify the mechanisms by-which current pulses affect plastic deformation, an electron-microscope study has been made of the evolution of the fine structure of steel Kh18N10T subjected to electrostimulated (current density 1200 MA/m2, frequency 200 Hz) and conventional wire-drawing at a speed of 1.88 m/sec with total reduction up to 58%. The evolution of the microstructure of steel during conventional plastic deformation of drawing is similar to that produced by conventional drawing and simultaneous current pulses. Quantitative characteristics of microstructure such as scalar dislocation density, azimuthal disorientation, and distance between subboundaries have been measured and statistically evaluated. The effect of the current is connected with the reduction of the scalar dislocation density and partial recovery of the substructure. Proposed models are supported by the data on microplastic deformation.

  5. Dissimilar material joining using laser (aluminum to steel using zinc-based filler wire)

    NASA Astrophysics Data System (ADS)

    Mathieu, Alexandre; Shabadi, Rajashekar; Deschamps, Alexis; Suery, Michel; Matteï, Simone; Grevey, Dominique; Cicala, Eugen

    2007-04-01

    Joining steel with aluminum involving the fusion of one or both materials is possible by laser beam welding technique. This paper describes a method, called laser braze welding, which is a suitable process to realize this structure. The main problem with thermal joining of steel/aluminum assembly with processes such as TIG or MIG is the formation of fragile intermetallic phases, which are detrimental to the mechanical performances of such joints. Braze welding permits a localized fusion of the materials resulting in a limitation on the growth of fragile phases. This article presents the results of a statistical approach for an overlap assembly configuration using a filler wire composed of 85% Zn and 15% Al. Tensile tests carried on these assemblies demonstrate a good performance of the joints. The fracture mechanisms of the joints are analyzed by a detailed characterization of the seams.

  6. Development of Process Maps in Two-Wire Tandem Submerged Arc Welding Process of HSLA Steel

    NASA Astrophysics Data System (ADS)

    Kiran, D. V.; Alam, S. A.; De, A.

    2013-04-01

    Appropriate selection of welding conditions to guarantee requisite weld joint mechanical properties is ever difficult because of their complex interactions. An approach is presented here to identify suitable welding conditions in typical two-wire tandem submerged arc welding (SAW-T) that involves many welding variables. First, an objective function is defined, which depicts the squared error between the mechanical properties of weld joint and of base material. A set of artificial neural network (ANN)-based models are developed next to estimate the weld joint properties as function of welding conditions using experimentally measured results. The neural network model-based predictions are used next to create a set of process map contours that depict the minimum achievable values of the objective function and the corresponding welding conditions. In typical SAW-T of HSLA steel, welding speed from 9.0 to 11.5 mm/s, leading wire current from 530 to 580 A, and trailing wire negative current from 680 to 910 A are found to be the most optimal.

  7. Crystallographic Texture Difference Between Center and Sub-Surface of Thin Cold-Drawn Pearlitic Steel Wires

    NASA Astrophysics Data System (ADS)

    Zhao, Tian-Zhang; Zhang, Guang-Liang; Song, Hong-Wu; Cheng, Ming; Zhang, Shi-Hong

    2014-09-01

    The texture difference between the center and sub-surface of pearlitic steel wires, which were manufactured by continuous cold drawing, was investigated by orientation distribution function based on electron back-scattered diffraction at different drawing passes. A perfect <110> fiber texture parallel to drawing direction develops gradually with drawing strain increasing at the wire center, while at the sub-surface, a quasi <110> fiber texture with the <111> orientation nearly parallel to the circumferential direction is found. This texture at the sub-surface is softer than the perfect <110> fiber texture in tension. The reasons for this texture difference and influences on the wire's mechanical properties are discussed.

  8. GMDH-type neural network modeling and genetic algorithm-based multi-objective optimization of thermal and friction characteristics in heat exchanger tubes with wire-rod bundles

    NASA Astrophysics Data System (ADS)

    Rahimi, Masoud; Beigzadeh, Reza; Parvizi, Mehdi; Eiamsa-ard, Smith

    2015-09-01

    The group method of data handling (GMDH) technique was used to predict heat transfer and friction characteristics in heat exchanger tubes equipped with wire-rod bundles. Nusselt number and friction factor were determined as functions of wire-rod bundle geometric parameters and Reynolds number. The performance of the developed GMDH-type neural networks was found to be superior in comparison with the proposed empirical correlations. For optimization, the genetic algorithm-based multi-objective optimization was applied.

  9. Influence of Ti and Ta doping on the irreversible strain limit of ternary Nb3Sn superconducting wires made by the restacked-rod process

    SciTech Connect

    Cheggour, N.; Ghosh, A.; Goodrich, L.F., Stauffer, T.C., Splett, J.D., Lu, X.F., Ambrosio, G.

    2010-06-22

    Nb{sub 3}Sn superconducting wires made by the restacked-rod process (RRP{reg_sign}) were found to have a dramatically improved resilience to axial tensile strain when alloyed with Ti as compared to Ta. Whereas Ta-alloyed Nb{sub 3}Sn in RRP wires showed permanent damage to its current-carrying capacity (I{sub c}) when tensioned beyond an intrinsic strain as small as 0.04%, Ti-doped Nb{sub 3}Sn in RRP strands exhibits a remarkable reversibility up to a tensile strain of about 0.25%, conceivably making Ti-doped RRP wires more suitable for the high field magnets used in particle accelerators and nuclear magnetic resonance applications where mechanical forces are intense. A strain cycling experiment at room temperature caused a significant drop of I{sub c} in Ta-alloyed wires, but induced an increase of I{sub c} in the case of Ti-doped strands. Whereas either Ti or Ta doping yield a similar enhancement of the upper critical field of Nb{sub 3}Sn, the much improved mechanical behavior of Ti-alloyed wires possibly makes Ti a better choice over Ta, at least for the RRP wire processing technique.

  10. Nanostructural States and Properties of the Surfacing Formed on Steel by a Cored Wire

    NASA Astrophysics Data System (ADS)

    Kapralov, E. V.; Budovskikh, E. A.; Gromov, V. E.; Ivanov, Yu. F.

    2015-08-01

    Structural-phase states and mechanical properties of electric arc surfacing by an EnDOtec DO*33 cored wire on a Hardox 400 steel are investigated. Formation of the multiphase state of the surfacing represented by grains of ?-iron and inclusions of carbide phases based on iron, chromium, and niobium is revealed by the methods of electron diffraction microscopy and x-ray phase analysis. The additional treatment of the surfacing by a high-intensity electron beam is performed. Mutual arrangement of the grains of ?-iron and particles of carbide phases is investigated. It is found that the surfacing layer is in the elastic-stressed state formed as a result of super-high heating and cooling rates initiated by the pulsed electron beam treatment. It is shown that the microhardness of the surfaced layer remains constant with the depth down to 4 mm and exceeds by a factor of 2.4 the microhardness of the substrate; the wear resistance of the surfacing is 3 times higher than that of the steel, and the friction coefficient of the surfacing is half that of the steel.

  11. Effect of confining pressure due to external jacket of steel plate or shape memory alloy wire on bond behavior between concrete and steel reinforcing bars.

    PubMed

    Choi, Eunsoo; Kim, Dongkyun; Park, Kyoungsoo

    2014-12-01

    For external jackets of reinforced concrete columns, shape memory alloy (SMA) wires are easy to install, and they provide active and passive confining pressure; steel plates, on the other hand, only provide passive confining pressure, and their installation on concrete is not convenient because of the requirement of a special device. To investigate how SMA wires distinctly impact bond behavior compared with steel plates, this study conducted push-out bond tests of steel reinforcing bars embedded in concrete confined by SMA wires or steel plates. For this purpose, concrete cylinders were prepared with dimensions of 100 mm x 200 mm, and D-22 reinforcing bars were embedded at the center of the concrete cylinders. External jackets of 1.0 mm and 1.5 mm thickness steel plates were used to wrap the concrete cylinders. Additionally, NiTiNb SMA wire with a diameter of 1.0 mm was wound around the concrete cylinders. Slip of the reinforcing bars due to pushing force was measured by using a displacement transducer, while the circumferential deformation of specimens was obtained by using an extensometer. The circumferential deformation was used to calculate the circumferential strains of the specimens. This study assessed the radial confining pressure due to the external jackets on the reinforcing bars at bond strength from bond stress-slip curves and bond stress-circumferential strain curves. Then, the effects of the radial confining pressure on the bond behavior of concrete are investigated, and an equation is suggested to estimate bond strength using the radial confining pressure. Finally, this study focused on how active confining pressure due to recovery stress of the SMA wires influences bond behavior. PMID:25971115

  12. 77 FR 62492 - Steel Wire Garment Hangers From Taiwan: Final Determination of Sales at Less Than Fair Value

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-15

    ... Hangers from Taiwan: Preliminary Determination of Sales at Less than Fair Value, 77 FR 46055 (August 2... from Taiwan; Preliminary Results of Antidumping Duty Administrative Review, 64 FR 55234, 55234 (October... Administrative Review, 65 FR 7491 (February 15, 2000). \\3\\ See Memorandum to the File, ``Steel Wire Hangers...

  13. 75 FR 38977 - Pre-Stressed Concrete Steel Wire Strand from the People's Republic of China: Notice of Amended...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-07

    ... Concrete Steel Wire Strand from China: Determinations, 75 FR 36678 (June 28, 2010) (ITC Final Determination... Duty Determination, 75 FR 28557 (May 21, 2010) (Final Determination). On June 22, 2010, the ITC... Determination, 74 FR 56576 (November 2, 2009) (Preliminary Determination). In accordance with section 703(d)...

  14. 76 FR 68407 - Galvanized Steel Wire From the People's Republic of China: Preliminary Determination of Sales at...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-04

    ... Mexico: Initiation of Antidumping Duty Investigations, 76 FR 23548 (April 27, 2011) (``Initiation Notice''). \\3\\ See id., at 76 FR 23553. On May 16, 2011, the United States International Trade Commission (``ITC...), Galvanized Steel Wire From China and Mexico, 76 FR 29266 (May 20, 2011). Period of Investigation The...

  15. 77 FR 12553 - Steel Wire Garment Hangers From the People's Republic of China: Final Results and Final Partial...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-01

    ..., the Department found that Shanghai Wells, Hong Kong Wells Limited (``HK Wells'') and Hong Kong Wells... Hanger Co., Ltd. and/or Hong Kong Wells 0.72 Limited \\17\\ PRC-Wide Entity \\18\\ 187.25 Assessment Pursuant... Republic of China, 73 FR 58111 (October 6, 2008). \\2\\ See Steel Wire Garment Hangers From the...

  16. 77 FR 59892 - Carbon and Certain Alloy Steel Wire Rod From Mexico: Affirmative Final Determination of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-01

    ... Determination of Circumvention of the Antidumping Duty Order, 76 FR 78882 (December 20, 2011) (Preliminary...-Circumvention Inquiry of Antidumping Duty Order, 76 FR 33218 (June 8, 2011) (Initiation). The Department is... by this circumvention inquiry. \\3\\ See Preliminary Determination. \\4\\ See Id., 76 FR at 78884....

  17. 75 FR 32503 - Stainless Steel Wire Rod From Italy, Japan, Korea, Spain, and Taiwan

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-08

    .... Background The Commission instituted these reviews effective July 1, 2009 (74 FR 31765, July 2, 2009) and determined on October 5, 2009, that it would conduct full reviews (74 FR 54068, October 21, 2009). Notice of... Commission, Washington, DC, and by publishing the notice in the Federal Register on November 30, 2009 (74...

  18. 1D Scaling with Ablation for K-Shell Radiation from Stainless Steel Wire Arrays

    SciTech Connect

    Giuliani, J. L.; Thornhill, J. W.; Dasgupta, A.; Davis, J.; Clark, R. W.; Jones, B.; Cuneo, M.; Coverdale, C. A.; Deeney, C.

    2009-01-21

    A 1D Lagrangian magnetohydrodynamic z-pinch simulation code is extended to include wire ablation. The plasma transport coefficients are calibrated to reproduce the K-shell yields measured on the Z generator for three stainless steel arrays of diameter 55 mm and masses ranging from 1.8 to 2.7 mg. The resulting 1D scaling model is applied to a larger SS array (65 mm and 2.5 mg) on the refurbished Z machine. Simulation results predict a maximum K-shell yield of 77 kJ for an 82 kV charging voltage. This maximum drops to 42 kJ at 75 kV charging. Neglecting the ablation precursor leads to a {approx}10% change in the calculated yield.

  19. Graphene coating bonded onto stainless steel wire as a solid-phase microextraction fiber.

    PubMed

    Sun, Min; Feng, Juanjuan; Bu, Yanan; Wang, Xiaojiao; Duan, Huimin; Luo, Chuannan

    2015-03-01

    A graphene coating bonded onto stainless steel wire was fabricated and investigated as a solid-phase microextraction fiber. The coating was characterized by scanning electron microscopy and energy-dispersive X-ray spectrometer. The coating with rough and crinkled structure was about 1 ?m. These characteristics were helpful for promoting extraction. Using five n-alkanes (n-undecane, n-dodecane, n-tridecane, n-tetradecane and n-hexadecane) as analytes, the fiber was evaluated in direct-immersion mode by coupling with gas chromatography (GC). Through optimizing extraction and desorption conditions, a sensitive SPME-GC analytical method was established. SPME-GC method provided wide linearity range (0.2-150 ?g L(-1)) and low limits of determination (0.05-0.5 ?g L(-1)). It was applied to analyze rain water and a soil sample, and analytes were quantified in the range of 0.85-1.96 ?g L(-1) and 0.09-3.34 ?g g(-1), respectively. The recoveries of samples spiked at 10 ?g L(-1) were in the range of 90.1-120% and 80.6-94.2%, respectively. The fiber also exhibited high thermal and chemical stability, due to the covalent bonds between graphene coating and wire, and the natural resistance of graphene for thermal, acid and basic conditions. PMID:25618658

  20. 77 FR 71776 - Certain Steel Threaded Rod From the People's Republic of China: Affirmative Preliminary...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-04

    ... Republic of China: Notice of Antidumping Duty Order, 74 FR 17154 (April 14, 2009) (``Order''). DATES... rod products with 1.25 percent or more chromium, by weight, produced by Gem-Year Industrial Co., Ltd... threaded rod from the PRC produced by Gem-Year containing greater than 1.25 percent chromium, by...

  1. Heat generation and transfer behaviors of ti-coated carbon steel rod adaptable for ablation therapy of oral cancer.

    PubMed

    Naohara, Takashi; Aono, Hiromichi; Maehara, Tsunehiro; Hirazawa, Hideyuki; Matsutomo, Shinya; Watanabe, Yuji

    2013-01-01

    For the purpose of developing a novel ablation therapy for oral cancer, the heat generation and transfer properties of a Ti-coated carbon steel rod with 20-mm length and 1.8-mm outer diameter were investigated by means of a high-frequency induction technique at 300 kHz. The heat generation measurement performed using water (15 mL) revealed that the difference of the inclination angles (? = 0°, 45° and 90°) relative to the magnetic flux direction only slightly affects the heating behavior, exhibiting the overlapped temperature curves during an induction time of 1200 s. These results suggest that the effect of the shape magnetic anisotropy is almost eliminated, being convenient for the precise control of the ablation temperature in clinical use. In the experiments utilizing a tissue-mimicking phantom, the heat transfer concentrically occurred in the lateral direction for both the planar surface and a 10-mm deep cross-section. However, the former exhibited a considerably lower increase in temperature (?T), probably due to the effect of heat dissipation to the ambient air. No significant heat transfer was found to occur to the lower side of the inserted Ti-coated carbon steel rod, which is situated in the longitudinal direction. PMID:24955829

  2. Growth of ZnO nanorods on stainless steel wire using chemical vapour deposition and their photocatalytic activity.

    PubMed

    Abd Aziz, Siti Nor Qurratu Aini; Pung, Swee-Yong; Ramli, Nurul Najiah; Lockman, Zainovia

    2014-01-01

    The photodegradation efficiency of ZnO nanoparticles in removal of organic pollutants deteriorates over time as a high percentage of the nanoparticles can be drained away by water during the wastewater treatment. This problem can be solved by growing the ZnO nanorods on stainless steel wire. In this work, ZnO nanorods were successfully grown on stainless steel wire by chemical vapour deposition. The SAED analysis indicates that ZnO nanorod is a single crystal and is preferentially grown in [0001] direction. The deconvoluted O 1s peak at 531.5 eV in XPS analysis is associated with oxygen deficient, revealing that the ZnO nanorods contain many oxygen vacancies. This observation is further supported by the finding of the small I(uv)/I(vis) ratio, that is, ~1 in the photoluminescence analysis. The growth of ZnO nanorods on stainless steel wire was governed by vapour-solid mechanism as there were no Fe particles observed at the tips of the nanorods. The photodegradation of Rhodamine B solution by ZnO nanorods followed the first-order kinetics. PMID:24587716

  3. [Examination of dust generated from a workplace where steel wire coil are unwound].

    PubMed

    Tashiro, H; Fujishiro, K; Okubo, T

    1999-03-01

    Analyses of constituents, measurement of concentrations, research of size distributions and scanning electron microscopic examinations were carried out to determine the type and amount of dust generated in a working environment where steel wire coils are unwound. In about a 700 m2 work area unit, stationary samplings, including A-sampling (24 points) and B-sampling (1 point), which are defined by the law, were carried out. The dust concentration was measured by a digital dust indicator. A low volume air sampler was used to determine the conversion factor of the values obtained by the digital dust indicator. Because the result of the dust level by A-sampling and B-sampling were 0.64 mg/m3 and 0.82 mg/m3 respectively, they can both be classified as Control Class 1. A proportion of less than 7 microns of the airborne dust made up about 15 to 20% (volume %) of the total dust in the working environments. Metallic dust and white dust were identified in the accumulated dust. By measuring with a X-ray diffractometry, it was determined that the metal dust constituent was Zn and the white dust constituent was Zn4CO3(OH)6.H2O. By a scanning electron microscopic examination, the scope of the particles was proven to be non-fibrous. PMID:10202792

  4. Laser-Arc Hybrid Welding of Dissimilar Titanium Alloy and Stainless Steel Using Copper Wire

    NASA Astrophysics Data System (ADS)

    Gao, Ming; Chen, Cong; Wang, Lei; Wang, Zemin; Zeng, Xiaoyan

    2015-05-01

    Laser-arc hybrid welding with Cu3Si filler wire was employed to join dissimilar Ti6Al4V titanium alloy and AISI316 stainless steel (316SS). The effects of welding parameters on bead shape, microstructure, mechanical properties, and fracture behavior were investigated in detail. The results show that cross-weld tensile strength of the joints is up to 212 MPa. In the joint, obvious nonuniformity of the microstructure is found in the fusion zone (FZ) and at the interfaces from the top to the bottom, which could be improved by increasing heat input. For the homogeneous joint, the FZ is characterized by Fe67- x Si x Ti33 dendrites spreading on ?-Cu matrix, and the two interfaces of 316SS/FZ and FZ/Ti6Al4V are characterized by a bamboo-like 316SS layer and a CuTi2 layer, respectively. All the tensile samples fractured in the hardest CuTi2 layer at Ti6Al4V side of the joints. The fracture surface is characterized by river pattern revealing brittle cleavage fracture. The bead formation mechanisms were discussed according to the melt flow and the thermodynamic calculation.

  5. Evaluation of load-deflection properties of fiber-reinforced composites and its comparison with stainless steel wires

    PubMed Central

    Alavi, Shiva; Mamavi, Tayebe

    2014-01-01

    Background: The aim of this study was to evaluate the response of common sized fiber-reinforced composites (FRCs) to different deflections due to bending forces and comparing it with stainless steel (SS) wires. Materials and Methods: In this experimental study, two FRC groups with 0.75 mm and 1.2 mm diameters (Everstick Ortho, Stick Tech, Finland) and three SS groups with 0.016 × 0.022 inch, 0.0215 × 0.028 inch and 0.7 mm diameters (3M Uniteck, Monrovia, California, USA) were tested. Each group contained 10 samples that were tested according to a three point bending test. Each group was tested at deflections of 0.5, 1 and 1.5 mm and the data was analyzed using the repeated measure ANOVA by SPSS software (Statistical Package for the Social Sciences, IBM SPSS, Inc. in Chicago, Illinois, USA). P < 0.05 was considered as significant. Results: The highest recorded load belonged to the 1.2 mm FRC and after that 0.7 mm SS wire, 0.75 mm FRC, 0.0215 × 0.028 inch SS wire and finally 0.016 × 0.022 inch SS wire. The 0.7 mm SS wire and 0.75 mm FRC were compared as retainers and the results showed the 0.7 mm SS wire showed significantly higher load compared with 0.75 mm FRC (P < 0.05). The 1.2 mm FRC had significantly higher load compared to 0.0215 × 0.028 inch and 0.016 × 0.022 inch SS wires (P < 0.05). Conclusion: The results showed that the 1.2 mm FRC group had significantly higher load compared to SS wires and other FRC groups under the 0.5, 1 and 1.5 mm deflections. Therefore, it can be suggested that FRC can be used as an esthetic replacement for SS wires for active and passive purposes in orthodontics. PMID:24932195

  6. Selection of Wire Electrical Discharge Machining Process Parameters on Stainless Steel AISI Grade-304 using Design of Experiments Approach

    NASA Astrophysics Data System (ADS)

    Lingadurai, K.; Nagasivamuni, B.; Muthu Kamatchi, M.; Palavesam, J.

    2012-06-01

    Wire electrical discharge machining (WEDM) is a specialized thermal machining process capable of accurately machining parts of hard materials with complex shapes. Parts having sharp edges that pose difficulties to be machined by the main stream machining processes can be easily machined by WEDM process. Design of Experiments approach (DOE) has been reported in this work for stainless steel AISI grade-304 which is used in cryogenic vessels, evaporators, hospital surgical equipment, marine equipment, fasteners, nuclear vessels, feed water tubing, valves, refrigeration equipment, etc., is machined by WEDM with brass wire electrode. The DOE method is used to formulate the experimental layout, to analyze the effect of each parameter on the machining characteristics, and to predict the optimal choice for each WEDM parameter such as voltage, pulse ON, pulse OFF and wire feed. It is found that these parameters have a significant influence on machining characteristic such as metal removal rate (MRR), kerf width and surface roughness (SR). The analysis of the DOE reveals that, in general the pulse ON time significantly affects the kerf width and the wire feed rate affects SR, while, the input voltage mainly affects the MRR.

  7. Ordered mesoporous polymers in situ coated on a stainless steel wire for a highly sensitive solid phase microextraction fibre.

    PubMed

    Zheng, Juan; Liang, Yeru; Liu, Shuqin; Ding, Yajuan; Shen, Yong; Luan, Tiangang; Zhu, Fang; Jiang, Ruifen; Wu, Dingcai; Ouyang, Gangfeng

    2015-07-21

    Development of facile and effective methods for fabrication of high-performance solid phase microextraction (SPME) fibres remains a great challenge. Herein, a new class of ordered mesoporous polymers (OMPs) in situ coated on a stainless steel wire were successfully developed and utilized as a highly sensitive and stable SPME fibre for the first time. Because of the highly ordered mesoporous structure of its OMP coating, the ?-? interactions and the dispersion forces, the OMP-coated SPME fibre exhibited much better extraction properties as compared to the commercial PDMS fibre. The findings could provide a new benchmark for preparing well-defined porous materials for the SPME application. PMID:26102576

  8. A comparative evaluation of the tensile strength of silver soldered joints of stainless steel and cobalt chromium orthodontic wires with band material--an in vitro study.

    PubMed

    Dua, R; Nandlal, B

    2004-03-01

    The present study was conducted to compare and evaluate the tensile strength of silver soldered joints of stainless steel and cobalt-chromium orthodontic wires with band material. An attempt was made to observe the effect of joint site preparation by incorporation of tack welding and increasing metal to metal surface contact area by flattening an end of the wire prior to soldering along with the regularly used round wires without tack welding. A total of 180 wire specimens were soldered to 180 band specimens. Fifteen samples according to joint site preparation were included for each of the wire groups i.e. Gloria (S.S.), Remanium (S.S.) and Remaloy (Co-Cr) wires of 0.036" in diameter. The findings of the study were suggestive that all three wires may be used for preparing silver soldered joints irrespective of the quality of the wire. However, when subjecting the wire to joint site preparation, Gloria (S.S.) wire showed less tensile strength as compared to Remanium and Remaloy. PMID:15255439

  9. Ordered mesoporous polymers in situ coated on a stainless steel wire for a highly sensitive solid phase microextraction fibre

    NASA Astrophysics Data System (ADS)

    Zheng, Juan; Liang, Yeru; Liu, Shuqin; Ding, Yajuan; Shen, Yong; Luan, Tiangang; Zhu, Fang; Jiang, Ruifen; Wu, Dingcai; Ouyang, Gangfeng

    2015-07-01

    Development of facile and effective methods for fabrication of high-performance solid phase microextraction (SPME) fibres remains a great challenge. Herein, a new class of ordered mesoporous polymers (OMPs) in situ coated on a stainless steel wire were successfully developed and utilized as a highly sensitive and stable SPME fibre for the first time. Because of the highly ordered mesoporous structure of its OMP coating, the ?-? interactions and the dispersion forces, the OMP-coated SPME fibre exhibited much better extraction properties as compared to the commercial PDMS fibre. The findings could provide a new benchmark for preparing well-defined porous materials for the SPME application.Development of facile and effective methods for fabrication of high-performance solid phase microextraction (SPME) fibres remains a great challenge. Herein, a new class of ordered mesoporous polymers (OMPs) in situ coated on a stainless steel wire were successfully developed and utilized as a highly sensitive and stable SPME fibre for the first time. Because of the highly ordered mesoporous structure of its OMP coating, the ?-? interactions and the dispersion forces, the OMP-coated SPME fibre exhibited much better extraction properties as compared to the commercial PDMS fibre. The findings could provide a new benchmark for preparing well-defined porous materials for the SPME application. Electronic supplementary information (ESI) available: Experimental details, Fig. S1-S3 and Tables S1-S3. See DOI: 10.1039/c5nr02674a

  10. 7 CFR 1755.702 - Copper coated steel reinforced (CCSR) aerial service wire.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ....S.C. 552(a) and 1 CFR part 51. Copies of ANSI/ICEA S-89-648-1993 are available for inspection during... 7 Agriculture 11 2011-01-01 2011-01-01 false Copper coated steel reinforced (CCSR) aerial service..., ACCEPTABLE MATERIALS, AND STANDARD CONTRACT FORMS § 1755.702 Copper coated steel reinforced (CCSR)...

  11. 7 CFR 1755.702 - Copper coated steel reinforced (CCSR) aerial service wire.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ....S.C. 552(a) and 1 CFR part 51. Copies of ANSI/ICEA S-89-648-1993 are available for inspection during... 7 Agriculture 11 2013-01-01 2013-01-01 false Copper coated steel reinforced (CCSR) aerial service..., ACCEPTABLE MATERIALS, AND STANDARD CONTRACT FORMS § 1755.702 Copper coated steel reinforced (CCSR)...

  12. 7 CFR 1755.702 - Copper coated steel reinforced (CCSR) aerial service wire.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ....S.C. 552(a) and 1 CFR part 51. Copies of ANSI/ICEA S-89-648-1993 are available for inspection during... 7 Agriculture 11 2012-01-01 2012-01-01 false Copper coated steel reinforced (CCSR) aerial service..., ACCEPTABLE MATERIALS, AND STANDARD CONTRACT FORMS § 1755.702 Copper coated steel reinforced (CCSR)...

  13. 7 CFR 1755.702 - Copper coated steel reinforced (CCSR) aerial service wire.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ....S.C. 552(a) and 1 CFR part 51. Copies of ANSI/ICEA S-89-648-1993 are available for inspection during... 7 Agriculture 11 2014-01-01 2014-01-01 false Copper coated steel reinforced (CCSR) aerial service..., ACCEPTABLE MATERIALS, AND STANDARD CONTRACT FORMS § 1755.702 Copper coated steel reinforced (CCSR)...

  14. Sintered wire annode

    DOEpatents

    Falce, Louis R. (Surprise, AZ); Ives, R. Lawrence (Saratoga, CA)

    2007-12-25

    A plurality of high atomic number wires are sintered together to form a porous rod that is parted into porous disks which will be used as x-ray targets. A thermally conductive material is introduced into the pores of the rod, and when a stream of electrons impinges on the sintered wire target and generates x-rays, the heat generated by the impinging x-rays is removed by the thermally conductive material interspersed in the pores of the wires.

  15. 78 FR 66330 - Certain Steel Threaded Rod From the People's Republic of China; Final Results of Third...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-05

    ...Threaded Rod From the People's Republic of China; Final Results of Third Antidumping Duty...threaded rod from the People's Republic of China (``PRC'') on April 9, 2013.\\1...Threaded Rod from the People's Republic of China: Preliminary Results of the...

  16. 75 FR 8746 - Certain Steel Grating From China

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-25

    ...such as hot-rolled sheet, plate, or wire rod. The scope of this investigation...slit and expanded, and does not involve welding or joining of multiple pieces of steel...and cold formed, and does not involve welding or joining of multiple pieces of...

  17. 76 FR 66895 - Steel Wire Garment Hangers From the People's Republic of China: Affirmative Final Determination...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-28

    ...Circumvention of Antidumping and Countervailing Duty Orders, 68 FR 54888 (September 19, 2003); and Hot-Rolled Lead and Bismuth Carbon Steel Products from Germany and the United Kingdom; Negative Final Determinations of Circumvention of Antidumping...

  18. 7 CFR 1755.702 - Copper coated steel reinforced (CCSR) aerial service wire.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ....S.C. 552(a) and 1 CFR part 51. Copies of ANSI/ICEA S-89-648-1993 are available for inspection during... service wire. (a) Conductors. (1) Each conductor shall comply with the requirements specified in the..., telephone number (508) 394-4424. (2) Factory joints in conductors shall comply with the...

  19. The Corrosion Resistance of Composite Arch Wire Laser-Welded By NiTi Shape Memory Alloy and Stainless Steel Wires with Cu Interlayer in Artificial Saliva with Protein

    PubMed Central

    Zhang, Chao; Sun, Xinhua; Hou, Xu; Li, Hongmei; Sun, Daqian

    2013-01-01

    In this paper, the corrosion resistance of laser-welded composite arch wire (CoAW) with Cu interlayer between NiTi shape memory alloy and stainless steel wire in artificial saliva with different concentrations of protein was studied. It was found that protein addition had a significant influence on the corrosion behavior of CoAW. Low concentration of protein caused the corrosion resistance of CoAW decrease in electrochemical corrosion and immersion corrosion tests. High concentration of protein could reduce this effect. PMID:23801895

  20. Low Cost Transition Metals Doping over Tio2 for Denox Catalyst Deposited onto Woven Stainless Steel Wire Mesh

    NASA Astrophysics Data System (ADS)

    Ismail, Kamariah Noor; Hamid, Ku Halim Ku

    The objective of the present study was to develop a high porosity NOx reduction catalyst using cobalt and multi-component metal from low cost transition element which was deposited onto woven stainless steel wire-mesh monolith honeycomb by sol-gel method. These metals were mixed with titanium (iv) isopropoxide as a metal oxide precursor in sol-gelphase whereby metal titanium also acts as catalyst. The reduction activity of the prepared catalyst was investigated by using Temperature Program Reduction (TPR) instrument. It was found that the synthesized catalyst has shown high porosity in which it was reflected to an amount of single point BET surface area (100.065 m2 g-1) obtained from TPR data. The morphology of the synthesized catalyst particles was analyzed by using scanning electron, microscope (SEM).

  1. Atomic scale investigation of redistribution of alloying elements in pearlitic steel wires upon cold-drawing and annealing.

    PubMed

    Li, Y J; Choi, P; Goto, S; Borchers, C; Raabe, D; Kirchheim, R

    2013-09-01

    A local electrode atom probe has been employed to analyze the redistribution of alloying elements including Si, Mn, and Cr in pearlitic steel wires upon cold-drawing and subsequent annealing. It has been found that the three elements undergo mechanical mixing upon cold-drawing at large strains, where Mn and Cr exhibit a nearly homogeneous distribution throughout both ferrite and cementite, whereas Si only dissolves slightly in cementite. Annealing at elevated temperatures leads to a reversion of the mechanical alloying. Si atoms mainly segregate at well-defined ferrite (sub)grain boundaries formed during annealing. Cr and Mn are strongly concentrated in cementite adjacent to the ferrite/cementite interface due to their lower diffusivities in cementite than in ferrite. PMID:23237772

  2. Influence of Nb Additions on Microstructural Evolution of a V-Microalloyed High-Carbon Wire Steel During Patenting

    NASA Astrophysics Data System (ADS)

    Miller, Stephanie L.; de Moor, Emmanuel

    2014-08-01

    This study investigated the feasibility of microalloying strategies for improving the strength of high-carbon wire products subjected to industrial patenting heat treatments for two eutectoid steels: a 0.8C-0.5Mn-0.2Cr-0.08 V alloy (wt.%) and the same composition with an additional 100 ppm Nb. A Gleeble 3500 thermomechanical simulator (Dynamic Systems Inc., Poestenkill, NY, USA) was used to perform heat treatments consisting of a 30 s austenitization at 1093 °C, 950 °C, or 880 °C followed by a 15 s isothermal transformation step at 650 °C, 625 °C, 600 °C, or 575 °C. Vickers hardness, field-emission scanning electron microscopy, and pearlite interlamellar spacing measurements were conducted to assess the effects of the heat treatments. Niobium microalloying additions were found to provide no hardness increase, but they extended the pearlitic regime to lower isothermal transformation temperatures.

  3. One hundred angstrom niobium wire

    NASA Technical Reports Server (NTRS)

    Cline, H. E.; Rose, R. M.; Wulff, J.

    1968-01-01

    Composite of fine niobium wires in copper is used to study the size and proximity effects of a superconductor in a normal matrix. The niobium rod was drawn to a 100 angstrom diameter wire on a copper tubing.

  4. Stainless steel wire mesh-supported ZnO for the catalytic photodegradation of methylene blue under ultraviolet irradiation.

    PubMed

    Vu, Tan T; del Río, Laura; Valdés-Solís, Teresa; Marbán, Gregorio

    2013-02-15

    The aim of this study was to assess the activity of catalysts formed by nanostructured zinc oxide supported on stainless steel wire mesh for the photocatalytic degradation of methylene blue under UV irradiation. Catalysts prepared by means of different low temperature synthesis methods, as described in a previous work (Vu et al., Mater. Res. Bull. 47 (2012) 1577-1586) were tested. A new activity parameter was introduced in order to compare the catalytic activity of the different catalysts. The best catalyst showed a catalytic activity higher than that of the reference material TiO(2) P25 (Degussa-Evonik). This high activity is attributed to a higher quantum yield derived from the small particle length of the ZnO deposited on the wire mesh. The photocatalytic degradation kinetics of methylene blue fitted a potential model with n orders ranging from 0.5 to 6.9. Reaction orders over 1 were attributed to catalyst deactivation during the reaction resulting from the photocorrosion of ZnO. PMID:23291337

  5. 2D Radiation MHD K-shell Modeling of Single Wire Array Stainless Steel Experiments on the Z Machine

    SciTech Connect

    Thornhill, J. W.; Giuliani, J. L.; Apruzese, J. P.; Chong, Y. K.; Davis, J.; Dasgupta, A.; Whitney, K. G.; Clark, R. W.; Jones, B.; Coverdale, C. A.; Ampleford, D. J.; Cuneo, M. E.; Deeney, C.

    2009-01-21

    Many physical effects can produce unstable plasma behavior that affect K-shell emission from arrays. Such effects include: asymmetry in the initial density profile, asymmetry in power flow, thermal conduction at the boundaries, and non-uniform wire ablation. Here we consider how asymmetry in the radiation field also contributes to the generation of multidimensional plasma behavior that affects K-shell power and yield. To model this radiation asymmetry, we have incorporated into the MACH2 r-z MHD code a self-consistent calculation of the non-LTE population kinetics based on radiation transport using multi-dimensional ray tracing. Such methodology is necessary for modeling the enhanced radiative cooling that occurs at the anode and cathode ends of the pinch during the run-in phase of the implosion. This enhanced radiative cooling is due to reduced optical depth at these locations producing an asymmetric flow of radiative energy that leads to substantial disruption of large initial diameter (>5 cm) pinches and drives 1D into 2D fluid (i.e., Rayleigh-Taylor like) flows. The impact of this 2D behavior on K-shell power and yield is investigated by comparing 1D and 2D model results with data obtained from a series of single wire array stainless steel experiments performed on the Z generator.

  6. Microstructure and mechanical properties of hot wire laser clad layers for repairing precipitation hardening martensitic stainless steel

    NASA Astrophysics Data System (ADS)

    Wen, Peng; Cai, Zhipeng; Feng, Zhenhua; Wang, Gang

    2015-12-01

    Precipitation hardening martensitic stainless steel (PH-MSS) is widely used as load-bearing parts because of its excellent overall properties. It is economical and flexible to repair the failure parts instead of changing new ones. However, it is difficult to keep properties of repaired part as good as those of the substrate. With preheating wire by resistance heat, hot wire laser cladding owns both merits of low heat input and high deposition efficiency, thus is regarded as an advantaged repairing technology for damaged parts of high value. Multi-pass layers were cladded on the surface of FV520B by hot wire laser cladding. The microstructure and mechanical properties were compared and analyzed for the substrate and the clad layer. For the as-cladded layer, microstructure was found non-uniform and divided into quenched and tempered regions. Tensile strength was almost equivalent to that of the substrate, while ductility and impact toughness deteriorated much. With using laser scanning layer by layer during laser cladding, microstructure of the clad layers was tempered to fine martensite uniformly. The ductility and toughness of the clad layer were improved to be equivalent to those of the substrate, while the tensile strength was a little lower than that of the substrate. By adding TiC nanoparticles as well as laser scanning, the precipitation strengthening effect was improved and the structure was refined in the clad layer. The strength, ductility and toughness were all improved further. Finally, high quality clad layers were obtained with equivalent or even superior mechanical properties to the substrate, offering a valuable technique to repair PH-MSS.

  7. Heat treatment induced intermetallic phase transition of arc-sprayed coating prepared by the wires combination of aluminum-cathode and steel-anode

    NASA Astrophysics Data System (ADS)

    Chen, Yongxiong; Liang, Xiubing; Wei, Shicheng; Liu, Yan; Xu, Binshi

    2009-07-01

    A method to prepare intermetallic composite coatings employing the cost-efficient electric arc spraying twin wires assistant with suitable heat treatment was developed. In this study, a Fe-Al composite coating was produced by spraying twin wires, i.e. a carbon steel wire as the anode and an aluminum wire as the cathode. The inter-deposited Fe-Al coating was transformed in-situ to Fe-Al intermetallic composite coating after a post annealing treatment. The effect of annealing treatment conditions on phase composition, microstructure and mechanical properties of the coating was investigated by using XRD, SEM, EDS and OM as well as microhardness tester. The results show that the desirable intermetallic phases such as Fe 2Al 5, FeAl and Fe 3Al are obtained under the annealing condition. The main oxide in the coating is FeO which can partially transform to Fe 3O 4 up to the annealing condition.

  8. 76 FR 55031 - Galvanized Steel Wire From the People's Republic of China: Preliminary Affirmative Countervailing...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-06

    ...not a lending rate, and the rates reported by Ecuador and Timor L'Este are dollar-denominated rates; therefore, the...preliminary determination, we find that the Japanese and Black Sea FOB export price data from the World Bank and Steel...

  9. Comparative Evaluation of Friction Resistance of Titanium, Stainless Steel, Ceramic and Ceramic with Metal Insert Brackets with Varying Dimensions of Stainless Steel Wire: An In vitro Multi-center Study

    PubMed Central

    Kumar, B Sunil; Miryala, Suresh; Kumar, K Kiran; Shameem, K; Regalla, Ravindra Reddy

    2014-01-01

    Background: The orthodontist seeks an archwire–bracket combination that has both good biocompatibility and low friction. Hence, the aim of this multicenter in vitro study was to evaluate and compare the frictional resistance generated between titanium (Ti), stainless steel (SS), ceramic and ceramic with metal insert (CMI) brackets with SS wires of varying dimensions in a specially designed apparatus. Materials and Methods: The material used in this study were Ti, SS, Ceramic and CMI with 0.018? slot manufactured with zero degree tip and ?7° torque premolar brackets (3M, Unitek) and SS wires of varying dimensions (0.016? round, 0.016 × 0.016? square, 0.016 × 0.022? rectangular and 0.017 × 0.025? rectangular) used. The frictional resistance was measured using Instron Universal testing machine (Model no. 4301). The specimen population in each center composed each of 160 brackets and wires. Differences among the all bracket/wire combinations were tested using (one-way) ANOVA, followed by the student Newman Keuls multiple comparisons of means ranking (at P < 0.05) for the determination of differences among the groups. Results: Ti bracket in combination with 0.017 × 0.025? SS rectangular wire produced significant force levels for an optimum orthodontic movement with least frictional resistance. Conclusion: Ti brackets have least resistance and rectangular wires produced significant force. These can be used to avoid hazards of Nickel. SS brackets revealed higher static frictional force values as the wire dimension increased and showed lower static friction than Ti brackets for all wires except the thicker wire. Our study recommends the preclusion of brackets with rough surface texture (Ti brackets) with SS ligature wire for ligating bracket and archwire are better to reduce friction. PMID:25395796

  10. 76 FR 64105 - Stainless Steel Wire Rod From India; Scheduling of an Expedited Five-Year Review Concerning the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-17

    ... of institution (76 FR 38686, July 1, 2011) of the subject five-year review was adequate and that the..., and 207.7 of the Commission's rules. Please consult the Commission's rules, as amended, 76 FR 61937 (Oct. 6, 2011) and the Commission's Handbook on Filing Procedures, 76 FR 62092 (Oct. 6, 2011)...

  11. 75 FR 8650 - Carbon and Certain Alloy Steel Wire Rod from Trinidad and Tobago; Final Results of Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-25

    ... Antidumping Duty Administrative Review, 74 FR 57648 (November 9, 2009) (Preliminary Results). We gave... Duties, 68 FR 23954 (May 6, 2003) (Assessment of Antidumping Duties). This clarification will apply to... from Brazil, Indonesia, Mexico, Moldova, Trinidad and Tobago, and Ukraine, 67 FR 65945, 65947...

  12. Characterization of hardened cylindrical C1018 steel rods (0.14%-0.2% C, 0.6%-0.9% Mn) using photothermal radiometry.

    PubMed

    Wang, Chinhua; Mandelis, Andreas

    2007-05-01

    Frequency-domain photothermal radiometry has been used for the evaluation of the hardened case depth and the measurement of the thermophysical properties (thermal conductivity and diffusivity) of cylindrical C1018 heat-treated steel rods. The measurement results of several steel cylinders nominally hardened identically during a common heat-treating process were consistent with each other and also with mechanical indentation hardness test results. The application of the two-layer composite cylinder thermal-wave theory yielded an effective case depth within the discrete two-layer thermal-wave approximation. This technique provides a relatively simple noncontact and nondestructive method for evaluating the thermophysical parameters of layered cylindrical samples. The good fit of the experimental frequency scans to the two-layer thermal-wave model was shown to constitute a reasonable method for calibrating actual continuously decreasing hardness depth profiles by means of abrupt two-layer-equivalent profiles. PMID:17552852

  13. 75 FR 43144 - Certain Steel Grating from the People's Republic of China: Countervailing Duty Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-23

    ...such as hot-rolled sheet, plate, or wire rod. The scope of this order excludes...slit and expanded, and does not involve welding or joining of multiple pieces of steel...and cold formed, and does not involve welding or joining of multiple pieces of...

  14. 75 FR 43143 - Certain Steel Grating from the People's Republic of China: Antidumping Duty Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-23

    ...such as hot-rolled sheet, plate, or wire rod. The scope of this order excludes...slit and expanded, and does not involve welding or joining of multiple pieces of steel...and cold formed, and does not involve welding or joining of multiple pieces of...

  15. Internal impedance of twisted steel-aluminum wires at an industrial frequency

    NASA Astrophysics Data System (ADS)

    Merkushev, A. G.; Elagin, I. A.

    2015-06-01

    A simplified mathematical model is suggested that describes the harmonic electromagnetic field distribution in high-voltage steel-core twisted cables with a single-layer winding at an industrial frequency. As a physical idealization, the twisted strands are represented in the form of an anisotropically conducting layer. When twisting is taken into consideration, an axial magnetic field arises, which substantially influences losses in the cables. Using the model, the dependences of the internal impedance on the core's magnetic permeability are derived for AS-70 cable at three winding angles of the external strands. These dependences are compared with results obtained in terms of a hollow cylinder model and with calculation data carried out in the complete statement of the problem with the finite element method.

  16. Development of configurational forces during the injection of an elastic rod

    E-print Network

    F. Bosi; D. Misseroni; F. Dal Corso; D. Bigoni

    2015-09-18

    When an inextensible elastic rod is 'injected' through a sliding sleeve against a fixed constraint, configurational forces are developed, deeply influencing the mechanical response. This effect, which is a consequence of the change in length of the portion of the rod included between the sliding sleeve and the fixed constraint, is theoretically demonstrated (via integration of the elastica) and experimentally validated on a proof-of-concept structure (displaying an interesting force reversal in the load/deflection diagram), to provide conclusive evidence to mechanical phenomena relevant in several technologies, including guide wire for artery catheterization, or wellbore insertion of a steel pipe.

  17. Effects of thermal aging and neutron irradiation on the mechanical properties of three-wire stainless steel weld overlay cladding

    SciTech Connect

    Haggag, F.M.; Nanstad, R.K.

    1997-05-01

    Thermal aging of three-wire series-arc stainless steel weld overlay cladding at 288{degrees}C for 1605 h resulted in an appreciable decrease (16%) in the Charpy V-notch (CVN) upper-shelf energy (USE), but the effect on the 41-J transition temperature shift was very small (3{degrees}C). The combined effect of aging and neutron irradiation at 288{degrees}C to a fluence of 5 x 10{sup 19} neutrons/cm{sup 2} (> 1 MeV) was a 22% reduction in the USE and a 29{degrees}C shift in the 41-J transition temperature. The effect of thermal aging on tensile properties was very small. However, the combined effect of irradiation and aging was an increase in the yield strength (6 to 34% at test temperatures from 288 to {minus}125{degrees}C) but no apparent change in ultimate tensile strength or total elongation. Neutron irradiation reduced the initiation fracture toughness (J{sub Ic}) much more than did thermal aging alone. Irradiation slightly decreased the tearing modulus, but no reduction was caused by thermal aging alone. Other results from tensile, CVN, and fracture toughness specimens showed that the effects of thermal aging at 288 or 343{degrees}C for 20,000 h each were very small and similar to those at 288{degrees}C for 1605 h. The effects of long-term thermal exposure time (50,000 h and greater) at 288{degrees}C will be investigated as the specimens become available in 1996 and beyond.

  18. Implosion dynamics and K-shell x-ray generation in large diameter stainless steel wire array Z pinches with various nesting configurations

    SciTech Connect

    Jones, Brent; Coverdale, Christine A.; Deeney, Christopher; Sinars, Daniel B.; Waisman, Eduardo M.; Cuneo, Michael E.; Ampleford, David J.; LePell, P. David; Cochrane, Kyle R.; Thornhill, J. Ward; Apruzese, J. P.; Dasgupta, Arati; Whitney, Kenneth G.; Clark, Robert W.; Chittenden, Jeremy P.

    2008-12-15

    Nested stainless steel wire array variations were investigated on the 20 MA Z machine [R. B. Spielman et al., Phys. Plasmas 5, 2105 (1998)]. In order to reach experimentally observed electron temperatures near 3.8 keV and excite the K shell, these {approx}6.7 keV photon energy x-ray sources must be of large initial diameter (45-80 mm) which poses a concern for magnetic Rayleigh-Taylor instability growth. We discuss the implosion dynamics in these large diameter wire arrays, including an analysis of the ablation phase indicating that the prefill material is snowplowed at large radius. Nested array configurations with various mass and radius ratios are compared for instability mitigation and K-shell scaling. Degradation of the K-shell x-ray power and yield was observed for shots that did not have simultaneous implosion of the outer and inner wire arrays. Shots that were designed per this constraint exhibited K-shell yield scaling consistent with the model of J. W. Thornhill et al. [IEEE Trans. Plasma Sci. 34, 2377 (2006)] which had been benchmarked to single array results. This lends confidence to K-shell yield predictions using this model for future shots on the refurbished Z machine. Initial results employing a triple nested wire array to stabilize the large diameter implosion are also reported.

  19. This study describes a novel multisite recording probe with linear arrangement of recording sites. It is build from a 30cm long, 650m diameter stainless steel rod featuring 31 microelectrodes on the side of its business end and a conical tip. Recording

    E-print Network

    Lübeck, Universität zu

    of recording sites. It is build from a 30cm long, 650µm diameter stainless steel rod featuring 31 in any ways. 2. MATERIALS AND METHODS 2.1. Multisite probe fabrication A thin stainless steel tube Activity of neurons across different layers. Keywords: Multsite neuronal recording, steel probe

  20. Developments in HSLA steel products

    NASA Astrophysics Data System (ADS)

    Paules, John R.

    1991-01-01

    The technology of microalloyed steels is expanding beyond its original emphasis on low-carbon, severely control-rolled strip and plate products. A variety of economical, high-strength, tough, as-rolled or as-forged microalloyed products are replacing more expensive heat-treated steels. Recrystallization-controlled rolling is being utilized to produce very fine ferrite grain sizes and good toughness in strip, plate and bar products processed with relatively high rolling temperatures. High-strength microalloyed long products such as railroad joint bars, truck frame rails and flat bars for truck trailer construction are replacing heat-treated parts. Microalloyed, medium-carbon forging steels are used extensively for automobile engine and suspension components. Fully pearlitic high-carbon rods are being microalloyed to enhance the properties of wire and springs.

  1. Strain measurement in a concrete beam by use of the Brillouin-scattering-based distributed fiber sensor with single-mode fibers embedded in glass fiber reinforced polymer rods and bonded to steel reinforcing bars.

    PubMed

    Zeng, Xiaodong; Bao, Xiaoyi; Chhoa, Chia Yee; Bremner, Theodore W; Brown, Anthony W; DeMerchant, Michael D; Ferrier, Graham; Kalamkarov, Alexander L; Georgiades, Anastasis V

    2002-08-20

    The strain measurement of a 1.65-m reinforced concrete beam by use of a distributed fiber strain sensor with a 50-cm spatial resolution and 5-cm readout resolution is reported. The strain-measurement accuracy is +/-15 microepsilon (microm/m) according to the system calibration in the laboratory environment with non-uniform-distributed strain and +/-5 microepsilon with uniform strain distribution. The strain distribution has been measured for one-point and two-point loading patterns for optical fibers embedded in pultruded glass fiber reinforced polymer (GFRP) rods and those bonded to steel reinforcing bars. In the one-point loading case, the strain deviations are +/-7 and +/-15 microepsilon for fibers embedded in the GFRP rods and fibers bonded to steel reinforcing bars, respectively, whereas the strain deviation is +/-20 microepsilon for the two-point loading case. PMID:12206221

  2. 78 FR 28803 - Steel Wire Garment Hangers From the People's Republic of China: Final Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-16

    ... Wire Garment Hangers from the People's Republic of China, 73 FR 58111 (October 6, 2008). Analysis of... Review, 2010-2011, 77 FR 66952 (November 8, 2012) (``Preliminary Results''), and accompanying Decision... Rescission, in Part, of the First Antidumping Duty Administrative Review, 75 FR 68758, 68761 (November...

  3. Forming condition and control strategy of ferrite decarburization in 60Si2MnA spring steel wires for automotive suspensions

    NASA Astrophysics Data System (ADS)

    Zhang, Chao-Lei; Liu, Ya-Zheng; Zhou, Le-Yu; Jiang, Chao; Xiao, Jin-Fu

    2012-02-01

    The ferrite decarburization behavior of 60Si2MnA spring steel wires for automotive suspensions, including the forming condition and the influence of heating time and cooling rate after hot rolling, was investigated comprehensively. Also, a control strategy during the reheating process and cooling process after rolling was put forward to protect against ferrite decarburization. The results show that ferrite decarburization, which has the strong temperature dependence due to phase transformation, is produced between 675 and 875°C. The maximum depth is found at 750°C. Heating time and cooling rate after rolling have an important influence on decarburization. Reasonable preheating temperature in the billet reheating process and austenitizing temperature in the heat-treatment process are suggested to protect against ferrite decarburization.

  4. Growth of cedar-like Au nanoparticles coating on an etched stainless steel wire and its application for selective solid-phase microextraction.

    PubMed

    Zhang, Yida; Yang, Yaoxia; Li, Yi; Zhang, Min; Wang, Xuemei; Du, Xinzhen

    2015-05-30

    A novel cedar-like Au nanoparticles (AuNPs) coating was fabricated on an etched stainless steel (SS) wire by direct chemical deposition and used as an efficient and unbreakable solid phase microextraction (SPME) fiber. The etched SS wire offers a rough surface structure for subsequent growth of AuNPs in chloroauric acid solution. As a result, the uniform cedar-like AuNPs coating with larger surface area was tightly attached to the etched SS wire substrate. The AuNPs coated etched SS fiber (AuNPs/SS) was examined for SPME of ultraviolet (UV) filters, phthalate esters and aromatic hydrocarbons coupled to high-performance liquid chromatography with UV detection. The fabricated fiber exclusively exhibited excellent extraction efficiency and selectivity for some aromatic hydrocarbons. Influential parameters of extraction and desorption time, temperature, stirring rate and ionic strength were investigated and optimized. The limits of detection ranged from 0.008 ?g L(-1) to 0.037 ?g L(-1). The single fiber repeatability varied from 3.90% to 4.50% and the fiber-to-fiber reproducibility ranged from 5.15% to 6.87%. The recovery of aromatic hydrocarbons in real water samples spiked at 2.0 ?g L(-1) and 20 ?g L(-1) ranged from 94.38% to 106.2% with the relative standard deviations below 6.44%. Furthermore the growth of the cedar-like AuNPs coating can be performed in a highly reproducible manner. This fabricated fiber exhibits good stability and withstands at least 200 extraction and desorption replicates. PMID:25998458

  5. 77 FR 46055 - Steel Wire Garment Hangers From Taiwan: Preliminary Determination of Sales at Less Than Fair Value

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-02

    ... Determination, 76 FR 68129, 68132 (November 3, 2011), unchanged in Certain Steel Nails from the United Arab..., 77 FR 3731 (January 25, 2012) (``Initiation Notice''). The Department set aside a period of time for... and Taiwan: Postponement of Preliminary Determinations of Antidumping Duty Investigations, 77 FR...

  6. High-frequency ultrasonic wire bonding systems

    PubMed

    Tsujino; Yoshihara; Sano; Ihara

    2000-03-01

    The vibration characteristics of longitudinal-complex transverse vibration systems with multiple resonance frequencies of 350-980 kHz for ultrasonic wire bonding of IC, LSI or electronic devices were studied. The complex vibration systems can be applied for direct welding of semiconductor tips (face-down bonding, flip-chip bonding) and packaging of electronic devices. A longitudinal-complex transverse vibration bonding system consists of a complex transverse vibration rod, two driving longitudinal transducers 7.0 mm in diameter and a transverse vibration welding tip. The vibration distributions along ceramic and stainless-steel welding tips were measured at up to 980 kHz. A high-frequency vibration system with a height of 20.7 mm and a weight of less than 15 g was obtained. PMID:10829633

  7. Method for making a hot wire anemometer and product thereof

    NASA Technical Reports Server (NTRS)

    Milkulla, V. (inventor)

    1977-01-01

    A hot wire anemometer probe is described that includes a ceramic body supporting two conductive rods parallel to each other. The body has a narrow edge surface from which the rods protrude. A probe wire is welded to the rods and extends along the edge surface. A ceramic adhesive is used to secure the probe wire to the surface so that the probe wire is rigid. A method for fabricating the probe is also described in which the body is molded and precisely shaped by machining techniques before the probe wires are installed.

  8. Influence of different brazing and welding methods on tensile strength and microhardness of orthodontic stainless steel wire.

    PubMed

    Bock, Jens Johannes; Fraenzel, Wolfgang; Bailly, Jacqueline; Gernhardt, Christian Ralf; Fuhrmann, Robert Andreas Werner

    2008-08-01

    The aim of this study was to compare the mechanical strength and microhardness of joints made by conventional brazing and tungsten inert gas (TIG) and laser welding. A standardized end-to-end joint configuration of the orthodontic wire material in spring hard quality was used. The joints were made using five different methods: brazing (soldering > 450 degrees C) with universal silver solder, two TIG, and two laser welders. Laser parameters and welding conditions were used according to the manufacturers' guidance. The tensile strengths were measured with a universal testing machine (Zwick 005). The microhardness measurements were carried out with a hardness tester (Zwick 3202). Data were analysed using one-way analysis of variance and Bonferroni's post hoc correction (P < 0.05). In all cases, brazing joints ruptured at low levels of tensile strength (198 +/- 146 MPa). Significant differences (P < 0.001) between brazing and TIG or laser welding were found. The highest means were observed for TIG welding (699-754 MPa). Laser welding showed a significantly lower mean tensile strength (369-520 MPa) compared with TIG welding. Significant differences (P < 0.001) were found between the original orthodontic wire and the mean microhardness at the centre of the welded area. The mean microhardness differed significantly between brazing (1.99 GPa), TIG (2.22-2.39 GPa) and laser welding (2.21-2.68 GPa). For orthodontic purposes, laser and TIG welding are solder-free alternatives to joining metal. TIG welding with a lower investment cost is comparable with laser welding. However, while expensive, the laser technique is a sophisticated and simple method. PMID:18617503

  9. High current pulse testing for ground rod integrity

    NASA Technical Reports Server (NTRS)

    Walko, Lawrence C.

    1991-01-01

    A test technique was developed to assess various grounding system concepts used for mobile facilities. The test technique involves applying a high current pulse to the grounding system with the proper waveshape and magnitude to simulate a lightning return stroke. Of concern were the step voltages present along the ground near the point of lightning strike. Step voltage is equated to how fast the current pulse is dissipated by the grounding system. The applied current pulse was produced by a high current capacitor bank with a total energy content of 80 kilojoules. A series of pulse tests were performed on two types of mobile facility grounding systems. One system consisted of an array of four 10 foot copper clad steel ground rods connected by 1/0 gauge wire. The other system was an array of 10 inch long tapered ground rods, strung on stainless steel cable. The focus here is on the pulse test technique used and its relevance to actual lightning strike conditions.

  10. Comminuting irradiated ferritic steel

    DOEpatents

    Bauer, Roger E. (Kennewick, WA); Straalsund, Jerry L. (Kennewick, WA); Chin, Bryan A. (Auburn, AL)

    1985-01-01

    Disclosed is a method of comminuting irradiated ferritic steel by placing the steel in a solution of a compound selected from the group consisting of sulfamic acid, bisulfate, and mixtures thereof. The ferritic steel is used as cladding on nuclear fuel rods or other irradiated components.

  11. Ferrite insertion at Recycler Flying Wire System

    SciTech Connect

    K.Y. Ng

    2004-02-27

    Ferrite rods are installed inside the flying-wire cavity of the Recycler Ring and at entrance and exit beam pipes in order to absorb high-frequency electromagnetic waves excited by the beam. However, these rods may also deteriorate the vacuum pressure of the ring. An investigation is made to analyze the necessity of the ferrite rods at the entrance and exit beam pipes.

  12. Jacket-free stir bar sorptive extraction with bio-inspired polydopamine-functionalized immobilization of cross-linked polymer on stainless steel wire.

    PubMed

    Zhang, Zixin; Zhang, Wenpeng; Bao, Tao; Chen, Zilin

    2015-08-14

    Stainless steel wire (SSW) is a good substrate for stir bar sorptive extraction (SBSE). However, it is still a challenge to immobilize commonly used cross-linked polymers onto SSW. In this work, we present a new approach for immobilization of the cross-linked organic polymer onto SSW for jacket-free SBSE. A dopamine derivative was firstly synthesized; by introducing a mussel-inspired polydopamine process, a stable coating layer was finally generated on the surface of SSW. Secondly, the cross-linked polymer was synthesized on the polydopamine-modified SSW by using acetonitrile as the porogen, acrylamide (AA) as the functional monomer, ethylene glycol dimethacrylate (EGDMA) as the cross-linker and 2,2'-azobis (2-methylpropionitrile) as the initiator. A diluted pre-polymerization solution was carefully prepared to generate a thin layer of the polymer. The prepared poly(EGDMA-AA)-modified stir bar showed high stability and good tolerance toward stirring, ultrasonication, organic solvents, and strong acidic and basic conditions. Morphology and structure characterization of coatings were performed by scanning electron microscopy and Fourier transform infrared spectra, respectively. The prepared poly(EGDMA-AA)-modified stir bar showed great extraction efficiency toward protoberberines, with enrichment factors of 19-42. An SBSE-HPLC method was also developed for quantitative analysis of protoberberines. The method showed low limits of detection (0.06-0.15 ng mL(-1)), wide linear range (0.5-400 ng mL(-1)), good linearity (R?0.9980) and good reproducibility (RSD?3.60% for intra-day, RSD?4.73% for inter-day). The developed method has been successfully applied to determine protoberberines in herb and rat plasma samples, with recoveries of 88.53-114.61%. PMID:26141275

  13. Estimation of the Force on the Syringe Tie-rods from Fringing

    E-print Network

    McDonald, Kirk

    SS304L or SS316L. · However Stainless Steel 17-4 PH was used. ­ This stainless steel is martensiticEstimation of the Force on the Syringe Tie-rods from Fringing Magnetic Fields Steve Kahn 5 April 2006 #12;Tie-rod location #12;#12;Tie-rod Specifications Indicate that They Should Be Non-Magnetic · 1

  14. Basic Wiring.

    ERIC Educational Resources Information Center

    Kaltwasser, Stan; And Others

    This module is the first in a series of three wiring publications; it serves as the foundation for students enrolled in a wiring program. It is a prerequisite to either "Residential Wiring" or "Commercial and Industrial Wiring." The module contains 16 instructional units that cover the following topics: occupational introduction; general safety;…

  15. Rodding Surgery

    MedlinePLUS

    Rodding Surgery 804 W. Diamond Ave., Ste. 210 Gaithersburg, MD 20878 (800) 981-2663 (301) 947-0083 Fax: (301) 947-0456 Internet: www.oif.org ... osteogenesis imperfecta contact: Osteogenesis Imperfecta Foundation 804 W. Diamond Avenue, Suite 210, Gaithersburg, MD 20878 Tel: 800- ...

  16. Stuck fuel rod capping sleeve

    DOEpatents

    Gorscak, Donald A. (Bethel Park, PA); Maringo, John J. (McKeesport, PA); Nilsen, Roy J. (Upper St. Clair, PA)

    1988-01-01

    A stuck fuel rod capping sleeve to be used during derodding of spent fuel assemblies if a fuel rod becomes stuck in a partially withdrawn position and, thus, has to be severed. The capping sleeve has an inner sleeve made of a lower work hardening highly ductile material (e.g., Inconel 600) and an outer sleeve made of a moderately ductile material (e.g., 304 stainless steel). The inner sleeve may be made of an epoxy filler. The capping sleeve is placed on a fuel rod which is then severed by using a bolt cutter device. Upon cutting, the capping sleeve deforms in such a manner as to prevent the gross release of radioactive fuel material

  17. Method of preparing composite superconducting wire

    DOEpatents

    Verhoeven, John D. (Ames, IA); Gibson, Edwin D. (Ames, IA); Finnemore, Douglas K. (Ames, IA); Ostenson, Jerome E. (Ames, IA); Schmidt, Frederick A. (Ames, IA); Owen, Charles V. (Ames, IA)

    1985-08-06

    An improved method of preparing composite multifilament superconducting wire of Nb.sub.3 Sn in a copper matrix which eliminates the necessity of coating the drawn wire with tin. A generalized cylindrical billet of an alloy of copper containing at least 15 weight percent niobium, present in the copper as discrete, randomly distributed and oriented dendritic-shaped particles, is provided with at least one longitudinal opening which is filled with tin to form a composite drawing rod. The drawing rod is then drawn to form a ductile composite multifilament wire containing a filament of tin. The ductile wire containing the tin can then be wound into magnet coils or other devices before heating to diffuse the tin through the wire to react with the niobium forming Nb.sub.3 Sn. Also described is an improved method for making large billets of the copper-niobium alloy by consumable-arc casting.

  18. Diagnostics for exploding wires (abstract)

    SciTech Connect

    Moosman, B.; Bystritskii, V.; Wessel, F.J.; Van Drie, A.

    1999-01-01

    Two diagnostics, capable of imaging fast, high temperature, plasmas were used on exploding wire experiments at UC Irvine. An atmospheric pressure nitrogen laser ({lambda}=337.1 nm) was used to generate simultaneous shadow and shearing interferogram images with a temporal resolution of {approximately}1 ns and a spatial resolution of 10 {mu}m. An x-ray backlighter imaged the exploding wire 90{degree} with respect to the laser and at approximately the same instant in time. The backlighter spatial resolution as determined by geometry and film resolution was 25 {mu}m. Copper wires of diameters (25, 50, and 100 {mu}m) and steel wire {ital d}=25 {mu}m were exploded in vacuum (10{sup {minus}5} Torr) at a maximum current level of 12 kA, by a rectified marx bank at a voltage of 50 kV and a current rise time (quarter period) of 900 ns. Copper wires which were cleaned and then resistively heated under vacuum to incandescence for several hours prior to high current initiation, exhibited greater expansion velocities at peak current than wires which had not been heated prior to discharge. Axial variations on the surface of the wire observed with the laser were found to correlate with bulk axial mass differences from x-ray backlighting. High electron density, measured near the opaque surface of the exploding wire, suggests that much of the current is shunted outward away from the bulk of the wire. {copyright} {ital 1999 American Institute of Physics.}

  19. 39. Detail view of No. 2 Furnace iron runner; rod ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    39. Detail view of No. 2 Furnace iron runner; rod or poker at right was used to unplug iron notch. - Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-second Street, Birmingham, Jefferson County, AL

  20. Sorting Titanium Welding Rods

    NASA Technical Reports Server (NTRS)

    Ross, W. D., Jr.; Brown, R. L.

    1985-01-01

    Three types of titanium welding wires identified by their resistance to current flow. Welding-wire tester quickly identifies unknown titaniumalloy wire by touching wire with test probe, and comparing meter response with standard response. Before touching wire, tip of test probe dipped into an electrolyte.

  1. Residential Wiring.

    ERIC Educational Resources Information Center

    Taylor, Mark

    The second in a series of three curriculum packages on wiring, these materials for a five-unit course were developed to prepare postsecondary students for entry-level employment in the residential wiring trade. The five units are: (1) blueprint reading and load calculations; (2) rough-in; (3) service; (4) trim out and troubleshooting; and (5) load…

  2. Wire chamber

    DOEpatents

    Atac, Muzaffer (Wheaton, IL)

    1989-01-01

    A wire chamber or proportional counter device, such as Geiger-Mueller tube or drift chamber, improved with a gas mixture providing a stable drift velocity while eliminating wire aging caused by prior art gas mixtures. The new gas mixture is comprised of equal parts argon and ethane gas and having approximately 0.25% isopropyl alcohol vapor.

  3. Electrodeposition of gold nanoparticles onto an etched stainless steel wire followed by a self-assembled monolayer of octanedithiol as a fiber coating for selective solid-phase microextraction.

    PubMed

    Yang, Yaoxia; Li, Yi; Liu, Haixia; Wang, Xuemei; Du, Xinzhen

    2014-11-01

    In the present study, a novel approach for rapid electrodeposition on an etched stainless steel (SS) wire followed by self-assembled monolayer (SAM) was proposed for the fabrication of solid-phase microextraction (SPME) fiber. The etched SS wire offers a rough surface structure for subsequent electrochemical deposition of gold nanoparticles (AuNPs). As a result, uniform AuNPs coating was tightly attached to the etched SS wire substrate. After SAM of 1,8-octanedithiol onto AuNPs coating via Au-S bonding, a unique floccular structure with extremely large surface area was obtained for the fabricated fiber. The mercaptooctyl groups modified AuNPs coated etched SS fiber (C8-S-AuNPs/SS) was then assessed for SPME of phthalate esters (PAEs), polychlorinated biphenyls (PCBs), chlorophenols (CPs), ultraviolet (UV) filters, polycyclic aromatic hydrocarbons (PAHs) and substituted anilines coupled to high-performance liquid chromatography with UV detection. This fiber exhibits higher extraction capability and better selectivity for some PCBs, CPs, UV filters and PAHs. Extraction conditions were investigated and optimized for SPME performance of UV filters. Under the optimized conditions, the developed method showed good linearity between 0.10 and 400?gL(-1) with corresponding coefficients in the range of 0.9989-0.9998. The limits of detection ranged from 0.025 to 0.056?gL(-1). The relative standard deviation for fiber-to-fiber reproducibility of five fabricated fibers was less than 9.4%. The developed method was successfully applied to the preconcentration and determination of trace UV filters from environmental water samples. Furthermore the fabrication of the C8-S-AuNPs/SS fiber can be performed in a highly reproducible manner. This fabricated fiber exhibits good stability and long lifetime, and could be a potential alternative for the conventional fused silica fiber. PMID:25465004

  4. Rod examination gauge

    SciTech Connect

    Bacvinskas, W.S.; Bayer, J.E.; Davis, W.W.; Fodor, G.; Kikta, T.J.; Matchett, R.L.; Nilsen, R.J.; Wilczynski, R.

    1991-12-31

    The present invention is directed to a semi-automatic rod examination gauge for performing a large number of exacting measurements on radioactive fuel rods. The rod examination gauge performs various measurements underwater with remote controlled machinery of high reliability. The rod examination gauge includes instruments and a closed circuit television camera for measuring fuel rod length, free hanging bow measurement, diameter measurement, oxide thickness measurement, cladding defect examination, rod ovality measurement, wear mark depth and volume measurement, as well as visual examination. A control system is provided including a programmable logic controller and a computer for providing a programmed sequence of operations for the rod examination and collection of data.

  5. Novel unbreakable solid-phase microextraction fibers on stainless steel wire and application for the determination of oxadiargyl in environmental and agricultural samples in combination with gas chromatography-mass spectrometry.

    PubMed

    Es-Haghi, Ali; Baghernejad, Masoud; Bagheri, Habib

    2014-10-01

    Sol-gel based solid-phase microextraction fibers supported by a stainless steel wire were fabricated and employed for GC-MS determination of oxadiargyl in real samples. The fibers were based on four compounds with different polarity: polar and non-polar (end-capped) poly(dimethylsiloxane) (PDMS), polyethylene glycol (PEG), and poly(ethylene-propyleneglycol)-monobutyl ether (UCON). For this purpose, the surface of the stainless steel was initially modified by (3-mercaptopropyl) trimethoxysilane. The results of the modification procedure were evaluated by cyclic voltammetry and energy dispersive X-ray (EDX) spectroscopy. After the modification, four different sol-gel based SPME fibers with different values of polarity, polar and non-polar PDMS, PEG, and UCON have been prepared and investigated. They are supposed to be employed to determinate oxadiargyl in agricultural and environmental samples prior to gas chromatography-mass spectrometry analysis. Most important parameters that affect the extraction efficiency were also optimized. Under optimized conditions, the proposed method was found to be linear for the concentrations ranging from 100 ng L(-1) to 2 mg L(-1) with R(2)=0.997. Limit of detection (LOD) of 40 ng L(-1) and relative standard deviation of less than 10% were obtained. Relative recovery in environmental and agricultural samples was in the range of 73-96%. PMID:25059153

  6. A large Bradbury Nielsen ion gate with flexible wire spacing based on photo-etched stainless steel grids and its characterization applying symmetric and asymmetric potentials

    E-print Network

    T. Brunner; A. R. Mueller; K. O'Sullivan; M. C. Simon; M. Kossick; S. Ettenauer; A. T. Gallant; E. Mané; D. Bishop; M. Good; G. Gratta; J. Dilling

    2011-09-14

    Bradbury Nielsen gates are well known devices used to switch ion beams and are typically applied in mass or mobility spectrometers for separating beam constituents by their different flight or drift times. A Bradbury Nielsen gate consists of two interleaved sets of electrodes. If two voltages of the same amplitude but opposite polarity are applied the gate is closed, and for identical (zero) potential the gate is open. Whereas former realizations of the device employ actual wires resulting in difficulties with winding, fixing and tensioning them, our approach is to use two grids photo-etched from a metallic foil. This design allows for simplified construction of gates covering large beam sizes up to at least 900\\,mm$^2$ with variable wire spacing down to 250\\,\\textmu m. By changing the grids the wire spacing can be varied easily. A gate of this design was installed and systematically tested at TRIUMF's ion trap facility, TITAN, for use with radioactive beams to separate ions with different mass-to-charge ratios by their time-of-flight.

  7. Wire Wise.

    ERIC Educational Resources Information Center

    Swanquist, Barry

    1998-01-01

    Discusses how today's technology is encouraging schools to invest in furnishings that are adaptable to computer use and telecommunications access. Explores issues concerning modularity, wiring management, ergonomics, durability, price, and aesthetics. (GR)

  8. Spectroscopic properties of colloidal indium phosphide quantum wires

    SciTech Connect

    Wang, Lin-Wang; Wang, Fudong; Yu, Heng; Li, Jingbo; Hang, Qingling; Zemlyanov, Dmitry; Gibbons, Patrick C.; Wang, Lin-Wang; Janes, David B.; Buhro, William E.

    2008-07-11

    Colloidal InP quantum wires are grown by the solution-liquid-solid (SLS) method, and passivated with the traditional quantum dots surfactants 1-hexadecylamine and tri-n-octylphosphine oxide. The size dependence of the band gaps in the wires are determined from the absorption spectra, and compared to other experimental results for InP quantum dots and wires, and to the predictions of theory. The photoluminescence behavior of the wires is also investigated. Efforts to enhance photoluminescence efficiencies through photochemical etching in the presence of HF result only in photochemical thinning or photo-oxidation, without a significant influence on quantum-wire photoluminescence. However, photo-oxidation produces residual dot and rod domains within the wires, which are luminescent. The results establish that the quantum-wire band gaps are weakly influenced by the nature of the surface passivation, and that colloidal quantum wires have intrinsically low photoluminescence efficiencies.

  9. Modeling and optimization of cylindrical wire electro discharge machining of AISI D3 tool steel using non-dominated sorting genetic algorithm

    NASA Astrophysics Data System (ADS)

    Golshan, Abolfazl; Gohari, Soheil; Ayob, Amran

    2011-10-01

    In this study the influence of Cylindrical Wire Electro Discharge Machining on surface roughness and material removal rate is conducted. From experimental DOE method and mathematical modeling, the importance and correlation between corresponding parameters and process output characterization are studied. The investigated input parameters include electrical current, pulse-off time, voltage, rotation speed and cone angle. The Non-dominated Sorting Genetic Algorithm is then applied on the outputs to generate appropriate optimized models. The optimization procedure shows that the suggested method results in a high performance problem solving.

  10. Control rod drive

    DOEpatents

    Hawke, Basil C. (Solana Beach, CA)

    1986-01-01

    A control rod drive uses gravitational forces to insert one or more control rods upwardly into a reactor core from beneath the reactor core under emergency conditions. The preferred control rod drive includes a vertically movable weight and a mechanism operatively associating the weight with the control rod so that downward movement of the weight is translated into upward movement of the control rod. The preferred control rod drive further includes an electric motor for driving the control rods under normal conditions, an electrically actuated clutch which automatically disengages the motor during a power failure and a decelerator for bringing the control rod to a controlled stop when it is inserted under emergency conditions into a reactor core.

  11. Effect of electrical spot welding on load deflection rate of orthodontic wires

    PubMed Central

    Alavi, Shiva; Abrishami, Arezoo

    2015-01-01

    Background: One of the methods used for joining metals together is welding, which can be carried out using different techniques such as electric spot welding. This study evaluated the effect of electric spot welding on the load deflection rate of stainless steel and chromium-cobalt orthodontic wires. Materials and Methods: In this experimental-laboratory study, load deflection rate of 0.016 × 0.022 inch stainless steel and chromium cobalt wires were evaluated in five groups (n =18): group one: Stainless steel wires, group two: chromium-cobalt wires, group three: stainless steel wires welded to stainless steel wires, group four: Stainless steel wires welded to chromium-cobalt wires, group five: chromium-cobalt wire welded to chromium-cobalt wires. Afterward, the forces induced by the samples in 0.5 mm, 1 mm, 1.5 mm deflection were measured using a universal testing machine. Then mean force measured for each group was compared with other groups. The data were analyzed using repeated measure analysis of variance (ANOVA), one-way ANOVA, and paired t-test by the SPSS software. The significance level was set as 0.05. Results: The Tukey test showed that there were significant differences between the load deflection rates of welded groups compared to control ones (P < 0.001). Conclusion: Considering the limitation of this study, the electric spot welding process performed on stainless steel and chromium-cobalt wires increased their load deflection rates. PMID:26604957

  12. Piston rod seal

    DOEpatents

    Lindskoug, Stefan (Malmo, SE)

    1984-01-01

    In a piston rod seal of the type comprising a gland through which the piston rod is passed the piston is provided with a sleeve surrounding the piston rod and extending axially so as to axially partly overlap the gland when the piston is in its bottom dead center position.

  13. No Wires.

    ERIC Educational Resources Information Center

    DeLoughry, Thomas J.

    1995-01-01

    The University of California at Santa Cruz has completed a successful test of a wireless computer network that would enable students and professors to get on line from anywhere on campus. The network, linked by radio waves, could save millions of dollars in campus wiring costs and would better meet student and faculty information needs. (MSE)

  14. Applications of surface analysis in the wire industry

    NASA Astrophysics Data System (ADS)

    Stout, David A.

    The quality of wire is judged not only by its physical properties such as tensile strength and fatigue resistance, but also by its surface finish. The surface roughness, oxide formation, cleanliness, and plating homogeneity and porosity are just a few of the surface properties than can influence the performance of a wire product. Coupled to this is the large amount of surface area generated in drawing wire. For example, a ten pound spool holds nine miles of 0.006? diameter stainless steel wire. For these reasons surface analysis has become important both to the manufacturer and consumer of wire products. When surface analysis equipment such as AES, ESCA, and SIMS was first becoming commercially available in the late sixties and early seventies, the wire industry was beginning to enter a phase of technological development for many of its products. Wire manufacturers and users began using surface analysis to investigate such topics as adhesion of brass plated automobile tire cord to rubber and diffusion of layered deposits. Examples of surface analysis used for process control, problem solving, and project development include discoloration problems on stainless steel wire, welding problems with composite wires, diffusion formed brass coatings, and diffusion problems with solder coated and Cu plated steel wire.

  15. Wire-free fixation of jaw fractures.

    PubMed

    Cousin, G C S

    2009-10-01

    Stainless steel wire is often used in the management of jaw fractures to provide intraoperative or postoperative intermaxillary fixation (IMF). Wiring of the jaws is time-consuming, a second procedure is needed to remove it, and needlestick injuries occur during placement. We report on 151 consecutive patients who had wire-free fixation of jaw fractures, and outline the value of a system of plastic anchorage points applied to individual teeth in both jaws that allows for wire-free IMF when they are linked by elastics (Rapid IMF, Synthes, PA, USA). A total of 150 successive patients had wire-free fixation of 146 mandibular and 5 maxillary fractures. Ninety-eight were hand-held in occlusion, and 52 were treated using Rapid IMF. There were few complications. PMID:19608310

  16. Multifilament Cable Wire versus Conventional Wire for Sternal Closure in Patients Undergoing Major Cardiac Surgery

    PubMed Central

    Oh, You Na; Ha, Keong Jun; Kim, Joon Bum; Jung, Sung-Ho; Choo, Suk Jung; Chung, Cheol Hyun; Lee, Jae Won

    2015-01-01

    Background Stainless steel wiring remains the most popular technique for primary sternal closure. Recently, a multifilament cable wiring system (Pioneer Surgical Technology Inc., Marquette, MI, USA) was introduced for sternal closure and has gained wide acceptance due to its superior resistance to tension. We aimed to compare conventional steel wiring to multifilament cable fixation for sternal closure in patients undergoing major cardiac surgery. Methods Data were collected retrospectively on 1,354 patients who underwent sternal closure after major cardiac surgery, using either the multifilament cable wiring system or conventional steel wires between January 2009 and October 2010. The surgical outcomes of these two groups of patients were compared using propensity score matching based on 18 baseline patient characteristics. Results Propensity score matching yielded 392 pairs of patients in the two groups whose baseline profiles showed no significant differences. No significant differences between the two groups were observed in the rates of early mortality (2.0% vs. 1.3%, p=0.578), major wound complications requiring reconstruction (1.3% vs. 1.3%, p>0.99), minor wound complications (3.6% vs. 2.0%, p=0.279), or mediastinitis (0.8% vs. 1.0%, p=1.00). Patients in the multifilament cable group had fewer sternal bleeding events than those in the conventional wire group, but this tendency was not statistically significant (4.3% vs. 7.4%, p=0.068). Conclusion The surgical outcomes of sternal closure using multifilament cable wires were comparable to those observed when conventional steel wires were used. Therefore, the multifilament cable wiring system may be considered a viable option for sternal closure in patients undergoing major cardiac surgery. PMID:26290838

  17. Finite element simulation of impact response of wire mesh screens

    NASA Astrophysics Data System (ADS)

    Wang, Caizheng; Shankar, Krishna; Fien, Alan

    2015-09-01

    In this paper, the response of wire mesh screens to low velocity impact with blunt objects is investigated using finite element (FE) simulation. The woven wire mesh is modelled with homogeneous shell elements with equivalent smeared mechanical properties. The mechanical behaviour of the woven wire mesh was determined experimentally with tensile tests on steel wire mesh coupons to generate the data for the smeared shell material used in the FE. The effects of impacts with a low mass (4 kg) and a large mass (40 kg) providing the same impact energy are studied. The joint between the wire mesh screen and the aluminium frame surrounding it is modelled using contact elements with friction between the corresponding elements. Damage to the screen of different types compromising its structural integrity, such as mesh separation and pulling out from the surrounding frame is modelled. The FE simulation is validated with results of impact tests conducted on woven steel wire screen meshes.

  18. Pull rod assembly

    DOEpatents

    Cioletti, O.C.

    1988-04-21

    A pull rod assembly comprising a pull rod having three peripheral grooves, a piston device including an adaptor ring and a seal ring, said piston device being mounted on the pull rod by a split ring retainer situated in one groove and extending into an interior groove in the adaptor and a resilient split ring retained in another groove and positioned to engage the piston device and to retain the seal on its adaptor.

  19. Precision wire feeder for small diameter wire

    DOEpatents

    Brandon, E.D.; Hooper, F.M.; Reichenbach, M.L.

    1992-08-11

    A device for feeding small diameter wire having a diameter less than 0.04 mm (16 mil) to a welding station includes a driving wheel for controllably applying a non-deforming driving force to the wire to move the free end of the wire towards the welding station; and a tension device such as a torque motor for constantly applying a reverse force to the wire in opposition to the driving force to keep the wire taut. 1 figure.

  20. Precision wire feeder for small diameter wire

    DOEpatents

    Brandon, Eldon D. (Albuquerque, NM); Hooper, Frederick M. (Albuquerque, NM); Reichenbach, Marvin L. (Albuquerque, NM)

    1992-01-01

    A device for feeding small diameter wire having a diameter less than 0.04 mm (16 mil) to a welding station includes a driving wheel for controllably applying a non-deforming driving force to the wire to move the free end of the wire towards the welding station; and a tension device such as a torque motor for constantly applying a reverse force to the wire in opposition to the driving force to keep the wire taut.

  1. Development of a precision wire feeder for small-diameter wire

    SciTech Connect

    Brandon, E.D.

    1995-03-01

    At Sandia National Laboratories in Albuquerque, the author designed and fabricated a precision wire feeder to be used with high energy density (electron beam and laser beam) welding for weld joints where filler wire might be needed to fill a gap or to adjust the chemical composition so that a crack-free weld could be made. The wire feeder incorporates a 25,000 step-per-revolution motor to power a urethane-coated drive roll. A microprocessor-based controller provides precise control of the motor and allows both continuous and pulsed feeding of the wire. A unidirectional 0.75-in.-dia ball bearing is used to press the wire against the drive roll. A slight constant backward tension is maintained on the wire spool by a Bodine torque motor. A Teflon tube is used to guide the wire from the drive roll to the vicinity of the weld, where a hypodermic needle is used to aim the wire into the weld pool. The operation of the wire feeder was demonstrated by feeding a 10-mil-dia, Type 304 stainless steel wire into a variety of CO{sub 2} laser beam welds. The resulting welds are smooth and continuous, and the welds are considered to be completely satisfactory for a variety of applications.

  2. VIEW WESTBUILDING 23WIRE MILL & PATENTING (c.1853 & c.1900)CENTER BUILDING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW WEST-BUILDING 23-WIRE MILL & PATENTING (c.1853 & c.1900)-CENTER BUILDING 25- NO 2 WIRE MILL (c.1853) BEHIND 23 TO RIGHT - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  3. Plasmonic response in a one-dimensional periodic structure of metallic rods

    E-print Network

    . Because of the similar behavior of metals in this frequency range, stainless steel and copper rods distance compared to their diameter with a one- dimensional periodicity. Under transverse magnetic TM in

  4. Process for producing fine and ultrafine filament superconductor wire

    DOEpatents

    Kanithi, H.C.

    1992-02-18

    A process for producing a superconductor wire made up of a large number of round monofilament rods is provided for, comprising assembling a multiplicity of round monofilaments inside each of a multiplicity of thin wall hexagonal tubes and then assembling a number of said thin wall hexagonal tubes within an extrusion can and subsequently consolidating, extruding and drawing the entire assembly down to the desired wire size. 8 figs.

  5. Process for producing fine and ultrafine filament superconductor wire

    DOEpatents

    Kanithi, Hem C. (15 Briar Ct., Chesire, CT 06410)

    1992-01-01

    A process for producing a superconductor wire made up of a large number of round monofilament rods is provided for, comprising assembling a multiplicity of round monofilaments inside each of a multiplicity of thin wall hexagonal tubes and then assembling a number of said thin wall hexagonal tubes within an extrusion can and subsequently consolidating, extruding and drawing the entire assembly down to the desired wire size.

  6. Investigation of Mechanical Properties of Cryogenically Treated Music Wire

    E-print Network

    Heptonstall, A; Robertson, N A

    2015-01-01

    It has been reported that treating music wire (high carbon steel wire) by cooling to cryogenic temperatures can enhance its mechanical properties with particular reference to those properties important for musical performance. We use such wire for suspending many of the optics in Advanced LIGO, the upgrade to LIGO - the Laser Interferometric Gravitational-Wave Observatory. Two properties that particularly interest us are mechanical loss and breaking strength. A decrease in mechanical loss would directly reduce the thermal noise associated with the suspension, thus enhancing the noise performance of mirror suspensions within the detector. An increase in strength could allow thinner wire to be safely used, which would enhance the dilution factor of the suspension, again leading to lower suspension thermal noise. In this article we describe the results of an investigation into some of the mechanical properties of music wire, comparing untreated wire with the same wire which has been cryogenically treated. For th...

  7. Control rod driveline and grapple

    DOEpatents

    Germer, John H. (San Jose, CA)

    1987-01-01

    A control rod driveline and grapple is disclosed for placement between a control rod drive and a nuclear reactor control rod containing poison for parasitic neutron absorption required for reactor shutdown. The control rod is provided with an enlarged cylindrical handle which terminates in an upwardly extending rod to provide a grapple point for the driveline. The grapple mechanism includes a tension rod which receives the upwardly extending handle and is provided with a lower annular flange. A plurality of preferably six grapple segments surround and grip the control rod handle. Each grapple rod segment grips the flange on the tension rod at an interior upper annular indentation, bears against the enlarged cylindrical handle at an intermediate annulus and captures the upwardly flaring frustum shaped handle at a lower and complementary female segment. The tension rods and grapple segments are surrounded by and encased within a cylinder. The cylinder terminates immediately and outward extending annulus at the lower portion of the grapple segments. Excursion of the tension rod relative to the encasing cylinder causes rod release at the handle by permitting the grapple segments to pivot outwardly and about the annulus on the tension rod so as to open the lower defined frustum shaped annulus and drop the rod. Relative movement between the tension rod and cylinder can occur either due to electromagnetic release of the tension rod within defined limits of travel or differential thermal expansion as between the tension rod and cylinder as where the reactor exceeds design thermal limits.

  8. The current status of high temperature superconducting wires

    NASA Astrophysics Data System (ADS)

    Mikhailov, B. P.; Burkhanov, G. S.

    1991-12-01

    The principal technological difficulties associated with the manufacture of high temperature superconducting (HTSC) wires based on yttrium and lanthanum ceramics are briefly reviewed. It is noted that the superconducting and mechanical properties of HTSC wires or ribbons are largely determined by their microstructure. Particular attention is given to the currently used method of producing HTSC wires whereby the ceramic powder is encased in a pipe shell and then deformed by different methods, such as rolling, drawing, or pressing. The requirements for the shell material are examined, and current densities are presented for HTSC wires produced in shells of copper, silver, aluminum, nickel, stainless steel, and zirconium.

  9. 21 CFR 888.3020 - Intramedullary fixation rod.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...is a device intended to be implanted that consists of a rod made of alloys such as cobalt-chromium-molybdenum and stainless steel. It is inserted into the medullary (bone marrow) canal of long bones for the fixation of fractures. (b)...

  10. Precision wire feeder for small diameter wire

    SciTech Connect

    Brandon, E.D.; Hooper, F.M.; Reichenbach, M.L.

    1990-12-31

    This invention is comprised of a device for feeding small diameter wire having a diameter less than .04 mm (16 mil) to a welding station which includes a driving wheel for controllably applying a non-deforming driving force to the wire to move the free end of the wire towards the welding station; and a tension device such as a torque motor for constantly applying a reverse force to the wire in opposition to the driving force to keep the wire taut. 1 fig.

  11. Windows: Life after Wire.

    ERIC Educational Resources Information Center

    Razwick, Jerry

    2003-01-01

    Although wired glass is extremely common in school buildings, the International Building Code adopted new standards that eliminate the use of traditional wired glass in K-12 schools, daycare centers, and athletic facilities. Wired glass breaks easily, and the wires can cause significant injuries by forming dangerous snags when the glass breaks.…

  12. Stretched Wire Mechanics

    SciTech Connect

    Bowden, Gordon; /SLAC

    2005-09-06

    Stretched wires are beginning to play an important role in the alignment of accelerators and synchrotron light sources. Stretched wires are proposed for the alignment of the 130 meter long LCLS undulator. Wire position technology has reached sub-micron resolution yet analyses of perturbations to wire straightness are hard to find. This paper considers possible deviations of stretched wire from the simple 2-dimensional catenary form.

  13. Characterization of a precision wire feeder for small-diameter wire

    SciTech Connect

    Brandon, E.; Hooper, F.

    1989-12-01

    The design and fabrication of a precision wire feeder are reported in Sandia report SAND88-1216. This report documents subsequent experimental work with that wire feeder to characterize its performance in feeding 5- and 10-mil-dia Type 308 stainless steel wire in conjunction with the CO{sub 2} laser beam welding process. Both bead-on-plate and square-groove butt welds were made to evaluate the sizes of wire and speeds at which they could be fed, to quantify the sizes of grooves that could be filled, and to determine the welding parameters and techniques required for gapped butt welds. Grooves up to 30 mils deep are satisfactorily welded in one pass; grooves of 100 mils deep required multiple passes to accomplish satisfactorily closure. Additional results showed no significant difference whether the wire was fed into the weld pool from the leading edge, the trailing edge, or from the side. Further, the angle of elevation of the wire into the weld pool was insignificant in the range of 20{degree} to 50{degree} from horizontal. The critical factors brought out by this study are (1) sharp focus of the laser beam is required to maximize the size of the weld pool, and (2) the entry of the wire into the pool is significant; that is, the laser beam must impinge on the pool, not on the wire. 31 figs., 6 tabs.

  14. Transducin translocation contributes to rod survival and enhances synaptic transmission from rods to rod bipolar cells.

    PubMed

    Majumder, Anurima; Pahlberg, Johan; Boyd, Kimberly K; Kerov, Vasily; Kolandaivelu, Saravanan; Ramamurthy, Visvanathan; Sampath, Alapakkam P; Artemyev, Nikolai O

    2013-07-23

    In rod photoreceptors, several phototransduction components display light-dependent translocation between cellular compartments. Notably, the G protein transducin translocates from rod outer segments to inner segments/spherules in bright light, but the functional consequences of translocation remain unclear. We generated transgenic mice where light-induced transducin translocation is impaired. These mice exhibited slow photoreceptor degeneration, which was prevented if they were dark-reared. Physiological recordings showed that control and transgenic rods and rod bipolar cells displayed similar sensitivity in darkness. After bright light exposure, control rods were more strongly desensitized than transgenic rods. However, in rod bipolar cells, this effect was reversed; transgenic rod bipolar cells were more strongly desensitized than control. This sensitivity reversal indicates that transducin translocation in rods enhances signaling to rod bipolar cells. The enhancement could not be explained by modulation of inner segment conductances or the voltage sensitivity of the synaptic Ca(2+) current, suggesting interactions of transducin with the synaptic machinery. PMID:23836670

  15. Failure analysis of explanted sternal wires.

    PubMed

    Shih, Chun-Ming; Su, Yea-Yang; Lin, Shing-Jong; Shih, Chun-Che

    2005-05-01

    To classify and understand the mechanisms of surface damages and fracture mechanisms of sternal wires, explanted stainless steel sternal wires were collected from patients with sternal dehiscence following open-heart surgery. Surface alterations and fractured ends of sternal wires were examined and analyzed. Eighty fractured wires extracted from 25 patients from January 1999 to December 2003, with mean implantation interval of 55+/-149 days (range 5-729 days) after cardiac surgery, were studied by various techniques. The extracted wires were cleaned and the fibrotic tissues were removed. Irregularities and fractured ends were assayed by a scanning electron microscopy. After stereomicroscopy and documentation, the explants were cleaned with 1% sodium hypochlorite to remove the blood and tissues and was followed by cleaned with deionized water and alcohol. The explants were examined by stereomicroscopy, and irregularities on surface and fracture surfaces of sternal wires were assayed by scanning electron microscopy, energy dispersive X-ray analysis (EDAX) and X-ray mapping. The explants with surrounding fibrotic tissue were stained and examined with stereomicroscopy and transmission electronic microscopy. Corrosion pits were found on the surface of explanted sternal wires. EDAX and X-ray mapping examinations revealed diminution of nickel concentration in the severely corroded pits on sternal wires. A feature of transgranular cracking was observed for stress corrosion cracking and striation character for typical corrosion fatigue was also identified. TEM examination of tissue showed the metallic particles in phagolysosomes of macrophages inside the surrounding sternal tissue. The synergic effect of hostile environment and the stress could be the precursors of failures for sternal wires. PMID:15576179

  16. 76 FR 34964 - Stainless Steel Bar From India: Partial Rescission of Antidumping Duty Administrative Review

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-15

    ...February 1, 2011). On February 28, 2011, Venus Wire Industries Pvt. Ltd (``Venus'') and Chandan Steel Limited (``Chandan...collectively, ``Petitioners''), for a review of Venus, Ambica Steels Limited (``Ambica''),...

  17. Substitute safety rods: Physics of operation and irradiation

    SciTech Connect

    Baumann, N.P.

    1991-11-18

    Under certain assumed accidents, an SRS reactor may lose most of its bulk moderator while maintaining flow to fuel assemblies. If this occurs immediately after operation at power, components normally dependent on convective heat transfer to the moderator will heat up with the possibility of melting that component. One component at risk is the currently used cadmium safety rod. A substitute safety rod consisting solely of sintered B{sub 4}C and stainless steel has been designed which is capable of withstanding much higher temperatures. This memorandum provides the physics basis for the adequacy of the rod for reactor shutdown and provides a set of criteria for acceptance in the NTG tests. This memorandum provides physics data for other aspects of operation. These include: Heat production and helium production, along with related phenomena, resulting from inadvertent irradiation at power. Gamma heat input under drained tank conditions. An equivalent rod design suitable for charge design and safety analyses. Degradation under normal operation. Thermal flux ripple in adjacent fuel due to axial striping of alternate B{sub 4}C and steel pellets. Possible effect on safety analyses. Safety rod withdrawal during reactor startup.

  18. Wire harness twisting aid

    NASA Technical Reports Server (NTRS)

    Casey, E. J.; Commadore, C. C.; Ingles, M. E.

    1980-01-01

    Long wire bundles twist into uniform spiral harnesses with help of simple apparatus. Wires pass through spacers and through hand-held tool with hole for each wire. Ends are attached to low speed bench motor. As motor turns, operator moves hand tool away forming smooth twists in wires between motor and tool. Technique produces harnesses that generate less radio-frequency interference than do irregularly twisted cables.

  19. Carbon rod furnace infrared source

    NASA Technical Reports Server (NTRS)

    Boyd, W. J.; Jennings, D. E.; Blass, W. E.; Gailar, N. M.

    1974-01-01

    A carbon rod furnace infrared source has been built and has proven to be a reliable and trouble-free source despite the high rod temperature of 2500 K. The furnace offers several advantages over previous furnaces. These include an increase in usable rod length to 6.35 cm, extended rod life, and a fully automated power supply for the furnace. Construction and operational details are discussed.

  20. Communications Wired Communications Protocols

    E-print Network

    Mohsenin, Tinoosh

    -Slave interface with parallel serial in/out data lines · Inter-Integrated Circuit(I2C) ­ Multi slaves/masters #12;Parallel vs. Serial · Serial opts for fewer wires, bits interpreted by order · Parallel achieves higher throughput at same frequency by using more wires Bits interpreted by wire

  1. Laser Wire Stripper

    NASA Technical Reports Server (NTRS)

    1983-01-01

    NASA-developed space shuttle technology is used in a laser wire stripper designed by Raytheon Company. Laser beams cut through insulation on a wire without damaging conductive metal, because laser radiation that melts plastic insulation is reflected by the metal. The laser process is fast, clean, precise and repeatable. It eliminates quality control problems and the expense of rejected wiring.

  2. Learning with Rods: One Account.

    ERIC Educational Resources Information Center

    Cherry, Donald Esha

    This paper discusses one English as a Second Language (ESL) teacher's attempts to use cuisenaire rods as a language learning tool. Cuisenaire rods (sometimes called algebricks) vary in size from 1 x 1 x 10 centimeter sticks to 1 x 1 x 1 centimeter cubes, with each of the 10 sizes a different color. Although such rods have been used to teach…

  3. Two-stage epitaxial growth of vertically-aligned SnO2 nano-rods on(001) ceria

    DOE PAGESBeta

    Solovyov, Vyacheslav F.; Wu, Li-jun; Rupich, Martin W.; Sathyamurthy, Srivatsan; Li, Xiaoping; Li, Qiang

    2014-09-20

    Growth of high-aspect ratio oriented tin oxide, SnO2, nano-rods is complicated by a limited choice of matching substrates. We show that a (001) cerium oxide, CeO2, surface uniquely enables epitaxial growth of tin-oxide nano-rods via a two-stage process. First, (100) oriented nano-wires coat the ceria surface by lateral growth, forming a uniaxially-textured SnO2 deposit. Second, vertical SnO2nano-rods nucleate on the deposit by homoepitaxy. We demonstrate growth of vertically oriented 1-2 ?m long nano-rods with an average diameter of ?20 nm.

  4. Joining of Aluminum and Steel in Car Body Manufacturing

    NASA Astrophysics Data System (ADS)

    Liedl, Gerhard; Bielak, Robert; Ivanova, Julia; Enzinger, Norbert; Figner, Gunter; Bruckner, Jürgen; Pasic, Haris; Pudar, Milan; Hampel, Stefan

    Zinc-coated steel sheets have been joined with aluminum samples in an overlapping as well as in a butt-joint configuration. A bimetal- wire composed from aluminum and steel was used for additional welding experiments. An advantage of the laser-assisted bi-metal-wire welding is that the welding process is simplified since the primary joint between aluminium and steel exists already and laser welding occurs only between similar materials. FEM-simulations of the process were chosen to determine the ideal dimensions with respect to the formability of the bi-metal-wire. A prototype demonstrated the feasibility of the process.

  5. Laser Wire Deposition (WireFeed) for Fully Dense Shapes LDRD

    SciTech Connect

    GRIFFITH,MICHELLE L.; ENSZ,MARK T.; GREENE,DONALD L.; RECKAWAY,DARYL E.; MORIN,JACOB A.; BUCHHEIT,THOMAS E.; LAVAN,DAVID A.; CRENSHAW,THOMAS B.; TIKARE,VEENA; ROMERO,JOSEPH A.

    1999-11-01

    Direct metal deposition technologies produce complex, near net shape components from Computer Aided Design (CAD) solid models. Most of these techniques fabricate a component by melting powder in a laser weld pool, rastering the weld bead to form a layer, and additively constructing subsequent layers. This report will describe anew direct metal deposition process, known as WireFeed, whereby a small diameter wire is used instead of powder as the feed material to fabricate components. Currently, parts are being fabricated from stainless steel alloys. Microscopy studies show the WireFeed parts to be filly dense with fine microstructural features. Mechanical tests show stainless steel parts to have high strength values with retained ductility. A model was developed to simulate the microstructural evolution and coarsening during the WireFeed process. Simulations demonstrate the importance of knowing the temperature distribution during fabrication of a WireFeed part. The temperature distribution influences microstructural evolution and, therefore, must be controlled to tailor the microstructure for optimal performance.

  6. Fabrication of New Nb3Sn Wires Through Brass Method

    NASA Astrophysics Data System (ADS)

    Tachikawa, Kyoji; Banno, Nobuya; Miyamoto, Yasuo

    New Nb3Sn wires have been fabricated through internal tin method using gold brass (Cu-15%Zn) matrix with central Sn-Ti core and surrounding Nb rods. Gold brass has excellent mechanical properties which yield multifilamentary wires with better configuration than conventional Cu matrix does. Central Sn and Ti diffuse uniformly to the Nb cores. Nb3Sn filaments with nearly stoichiometric composition have been synthesized. Zn does not penetrate into Nb3Sn layers, and remains uniformly in the matrix. The residual Zn in the matrix may improve the mechanical performance of wires, which is a key issue in Nb3Sn wires. Present process may be named brass method like bronze process widely being used.

  7. Diagnostic behavior of the Wire Arc Plasma spray process

    NASA Astrophysics Data System (ADS)

    Kowalsky, K. A.; Marantz, D. R.; Neiser, R. A.; Smith, M. F.

    Laser two-focus (L2F) velocimetry has been used to measure particle velocities in the Wire Arc Plasma spray process. Particle velocities were measured for aluminum, stainless steel, and copper feedstock with wire diameters of 1.6 mm and 0.9 mm. The Wire Arc Plasma gun was operated in both a single-gas mode, using air, and in a two-gas mode, using a mixture of argon/35 percent hydrogen as the primary plasma gas with pure argon as the secondary gas. The results indicate that maximum particle velocities are as high as 180 m/s for aluminum sprayed using air and 130 m/s using the argon/hydrogen mixture. The results also show that arc current and wire feed rate have little effect on particle velocity; however, particle velocities increase significantly with decreasing wire diameter and with decreasing density of the feedstock material.

  8. Choosing the proper self-shielded FCAW wire

    SciTech Connect

    Amata, M.; Fiore, S.R.

    1996-06-01

    When attempting to select the appropriate wire for each joining application, welders must choose from a menu of welding wires. Flux cored arc welding gas-shielded (FCAW-G) wires, such as an A5.20 E71T-1 type, may be conceived as the ``meat and potatoes,`` in other words, suitable for all mild steel fabrication. The same is not true, however, of the flux cored arc welding self-shielded (FCAW-S) wires. From inception, the complexity of the open arc continuous welding process has begrudgingly yielded designs uniquely suited only for a narrow range of metal joining operations. The uniqueness of each design is primarily a result of how the nitrogen naturally encountered within the arc is handled. In the selection of an FCAW-S wire, that same awareness of the bill of fare is indispensable. The user must know the applications best suited to each wire type because the application overlap of each type is very narrow. Consequently, selecting a type that ``may do`` could be costly or possibly disastrous. The list of FCAW-S ``multiple-pass wires with toughness`` completes the full menu. Selecting the proper type of wire from this list may never be as pleasurable as reviewing a dining menu; however, when shielded metal arc welding is not economical and gas-shielded flux cored welding is compromised by the wind, or when the application is simply done best with an FCAW-S wire, this menu should be helpful.

  9. Safety rod latch inspection

    SciTech Connect

    Leader, D.R.

    1992-02-01

    During an attempt to raise control rods from the 100 K reactor in December, one rod could not be withdrawn. Subsequent investigation revealed that a small ``button`` in the latch mechanism had broken off of the ``lock plunger`` and was wedged in a position that prevented rod withdrawal. Concern that this failure may have resulted from corrosion or some other metallurgical problem resulted in a request that SRL examine six typical latch mechanisms from the 100 L reactor by use of radiography and metallography. During the examination of the L-Area latches, a failed latch mechanism from the 100 K reactor was added to the investigation. Fourteen latches that had a history of problems were removed from K-Area and sent to SRL for inclusion in this study the week after the original seven assemblies were examined, bringing the total of latch assemblies discussed in this report to twenty one. Results of the examination of the K-Area latch that initiated this study is not included in this report.

  10. Safety rod latch inspection

    SciTech Connect

    Leader, D.R.

    1992-02-01

    During an attempt to raise control rods from the 100 K reactor in December, one rod could not be withdrawn. Subsequent investigation revealed that a small button'' in the latch mechanism had broken off of the lock plunger'' and was wedged in a position that prevented rod withdrawal. Concern that this failure may have resulted from corrosion or some other metallurgical problem resulted in a request that SRL examine six typical latch mechanisms from the 100 L reactor by use of radiography and metallography. During the examination of the L-Area latches, a failed latch mechanism from the 100 K reactor was added to the investigation. Fourteen latches that had a history of problems were removed from K-Area and sent to SRL for inclusion in this study the week after the original seven assemblies were examined, bringing the total of latch assemblies discussed in this report to twenty one. Results of the examination of the K-Area latch that initiated this study is not included in this report.

  11. A tool for measuring the bending length in thin wires.

    PubMed

    Lorenzini, M; Cagnoli, G; Cesarini, E; Losurdo, G; Martelli, F; Piergiovanni, F; Vetrano, F; Viceré, A

    2013-03-01

    Great effort is currently being put into the development and construction of the second generation, advanced gravitational wave detectors, Advanced Virgo and Advanced LIGO. The development of new low thermal noise suspensions of mirrors, based on the experience gained in the previous experiments, is part of this task. Quasi-monolithic suspensions with fused silica wires avoid the problem of rubbing friction introduced by steel cradle arrangements by directly welding the wires to silica blocks bonded to the mirror. Moreover, the mechanical loss level introduced by silica (?fs ? 10(-7) in thin fused silica wires) is by far less than the one associated with steel. The low frequency dynamical behaviour of the suspension can be computed and optimized, provided that the wire bending shape under pendulum motion is known. Due to the production process, fused silica wires are thicker near the two ends (necks), so that analytical bending computations are very complicated. We developed a tool to directly measure the low frequency bending parameters of fused silica wires, and we tested it on the wires produced for the Virgo+ monolithic suspensions. The working principle and a set of test measurements are presented and explained. PMID:23556827

  12. A tool for measuring the bending length in thin wires

    NASA Astrophysics Data System (ADS)

    Lorenzini, M.; Cagnoli, G.; Cesarini, E.; Losurdo, G.; Martelli, F.; Piergiovanni, F.; Vetrano, F.; Viceré, A.

    2013-03-01

    Great effort is currently being put into the development and construction of the second generation, advanced gravitational wave detectors, Advanced Virgo and Advanced LIGO. The development of new low thermal noise suspensions of mirrors, based on the experience gained in the previous experiments, is part of this task. Quasi-monolithic suspensions with fused silica wires avoid the problem of rubbing friction introduced by steel cradle arrangements by directly welding the wires to silica blocks bonded to the mirror. Moreover, the mechanical loss level introduced by silica (?fs ˜ 10-7 in thin fused silica wires) is by far less than the one associated with steel. The low frequency dynamical behaviour of the suspension can be computed and optimized, provided that the wire bending shape under pendulum motion is known. Due to the production process, fused silica wires are thicker near the two ends (necks), so that analytical bending computations are very complicated. We developed a tool to directly measure the low frequency bending parameters of fused silica wires, and we tested it on the wires produced for the Virgo+ monolithic suspensions. The working principle and a set of test measurements are presented and explained.

  13. 30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 30 Mineral Resources 1 2011-07-01 2011-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 77.1802 Section 77.1802... Wires and Trolley Feeder Wires § 77.1802 Insulation of trolley wires, trolley feeder wires and...

  14. 30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 77.1802 Section 77.1802... Wires and Trolley Feeder Wires § 77.1802 Insulation of trolley wires, trolley feeder wires and...

  15. 30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 30 Mineral Resources 1 2013-07-01 2013-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 75.1003 Section 75.1003... Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires...

  16. 30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 30 Mineral Resources 1 2013-07-01 2013-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 77.1802 Section 77.1802... Wires and Trolley Feeder Wires § 77.1802 Insulation of trolley wires, trolley feeder wires and...

  17. 30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 1 2012-07-01 2012-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 75.1003 Section 75.1003... Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires...

  18. 30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 30 Mineral Resources 1 2014-07-01 2014-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 75.1003 Section 75.1003... Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires...

  19. 30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 30 Mineral Resources 1 2014-07-01 2014-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 77.1802 Section 77.1802... Wires and Trolley Feeder Wires § 77.1802 Insulation of trolley wires, trolley feeder wires and...

  20. 30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 1 2012-07-01 2012-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 77.1802 Section 77.1802... Wires and Trolley Feeder Wires § 77.1802 Insulation of trolley wires, trolley feeder wires and...

  1. Hybrid nuclear reactor grey rod to obtain required reactivity worth

    DOEpatents

    Miller, John V. (Munhall, PA); Carlson, William R. (Scott Township, Allegheny County, PA); Yarbrough, Michael B. (Hempfield Township, Westmoreland County, PA)

    1991-01-01

    Hybrid nuclear reactor grey rods are described, wherein geometric combinations of relatively weak neutron absorber materials such as stainless steel, zirconium or INCONEL, and relatively strong neutron absorber materials, such as hafnium, silver-indium cadmium and boron carbide, are used to obtain the reactivity worths required to reach zero boron change load follow. One embodiment includes a grey rod which has combinations of weak and strong neutron absorber pellets in a stainless steel cladding. The respective pellets can be of differing heights. A second embodiment includes a grey rod with a relatively thick stainless steel cladding receiving relatively strong neutron absorber pellets only. A third embodiment includes annular relatively weak netron absorber pellets with a smaller diameter pellet of relatively strong absorber material contained within the aperture of each relatively weak absorber pellet. The fourth embodiment includes pellets made of a homogeneous alloy of hafnium and a relatively weak absorber material, with the percentage of hafnium chosen to obtain the desired reactivity worth.

  2. Reactor control rod timing system

    DOEpatents

    Wu, Peter T. K. (Clifton Park, NY)

    1982-01-01

    A fluid driven jet-edge whistle timing system for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

  3. 1998 wire development workshop proceedings

    SciTech Connect

    1998-04-01

    This report consists of vugraphs of the presentations at the conference. The conference was divided into the following sessions: (1) First Generation Wire Development: Status and Issues; (2) First Generation Wire in Pre-Commercial Prototypes; (3) Second Generation Wire Development: Private Sector Progress and Issues; (4) Second Generation Wire Development: Federal Laboratories; and (5) Fundamental Research Issues for HTS Wire Development.

  4. Weld Wire Investigation Summary

    SciTech Connect

    Cunningham, M.A.

    1999-03-22

    After GTA welding reservoir A production/process prove-in assemblies, X-ray examination detected a lack of sidewall fusion. After examining several possible causes, it was determined that the weld wire filler metal was responsible, particularly the wire cleaning process. The final conclusion was that the filler wire must be abrasively cleaned in a particular manner to perform as required. The abrasive process was incorporated into the wire material specification, ensuring consistency for all reservoir GTA welding at AlliedSignal Federal Manufacturing and Technologies (FM and T).

  5. Superconducting wire fabrication

    NASA Astrophysics Data System (ADS)

    Glad, W. E.; Chase, G. G.

    1990-05-01

    Experiments were done leading to the fabrication of high-temperature superconducting composite wire. Bulk superconductor was characterized by using optical microscopy, scanning electron microscopy, and energy-dispersive x ray spectroscopy. The chemical compatibility of superconducting materials with a number of metal sheathing candidates was tested, with silver offering the best compatibility. Wire was fabricated by drawing 0.250-inch-diameter silver tubing packed with superconducting powder. Single core wires were drawn to 0.037-inch diameter. The best critical current performance (660 A/sq cm) for leaded bismuth 2-2-2-3 material was achieved by flattening single-core wire before heat treatment.

  6. Wire-inhomogeneity detector

    DOEpatents

    Gibson, G.H.; Smits, R.G.; Eberhard, P.H.

    1982-08-31

    A device for uncovering imperfections in electrical conducting wire, particularly superconducting wire, by detecting variations in eddy currents. Eddy currents effect the magnetic field in a gap of an inductor, contained in a modified commercial ferrite core, through which the wire being tested is passed. A small increase or decrease in the amount of conductive material, such as copper, in a fixed cross section of wire will unbalance a bridge used to measure the impedance of the inductor, tripping a detector and sounding an alarm.

  7. Fiber optic laser rod

    DOEpatents

    Erickson, G.F.

    1988-04-13

    A laser rod is formed from a plurality of optical fibers, each forming an individual laser. Synchronization of the individual fiber lasers is obtained by evanescent wave coupling between adjacent optical fiber cores. The fiber cores are dye-doped and spaced at a distance appropriate for evanescent wave coupling at the wavelength of the selected dye. An interstitial material having an index of refraction lower than that of the fiber core provides the optical isolation for effective lasing action while maintaining the cores at the appropriate coupling distance. 2 figs.

  8. Automatic safety rod for reactors

    DOEpatents

    Germer, John H. (San Jose, CA)

    1988-01-01

    An automatic safety rod for a nuclear reactor containing neutron absorbing material and designed to be inserted into a reactor core after a loss-of-core flow. Actuation is based upon either a sudden decrease in core pressure drop or the pressure drop decreases below a predetermined minimum value. The automatic control rod includes a pressure regulating device whereby a controlled decrease in operating pressure due to reduced coolant flow does not cause the rod to drop into the core.

  9. Piston and connecting rod assembly

    NASA Technical Reports Server (NTRS)

    Brogdon, James William (Inventor); Gill, David Keith (Inventor); Chatten, John K. (Inventor)

    2001-01-01

    A piston and connecting rod assembly includes a piston crown, a piston skirt, a connecting rod, and a bearing insert. The piston skirt is a component separate from the piston crown and is connected to the piston crown to provide a piston body. The bearing insert is a component separate from the piston crown and the piston skirt and is fixedly disposed within the piston body. A bearing surface of a connecting rod contacts the bearing insert to thereby movably associate the connecting rod and the piston body.

  10. Wire Array Photovoltaics

    NASA Astrophysics Data System (ADS)

    Turner-Evans, Dan

    Over the past five years, the cost of solar panels has dropped drastically and, in concert, the number of installed modules has risen exponentially. However, solar electricity is still more than twice as expensive as electricity from a natural gas plant. Fortunately, wire array solar cells have emerged as a promising technology for further lowering the cost of solar. Si wire array solar cells are formed with a unique, low cost growth method and use 100 times less material than conventional Si cells. The wires can be embedded in a transparent, flexible polymer to create a free-standing array that can be rolled up for easy installation in a variety of form factors. Furthermore, by incorporating multijunctions into the wire morphology, higher efficiencies can be achieved while taking advantage of the unique defect relaxation pathways afforded by the 3D wire geometry. The work in this thesis shepherded Si wires from undoped arrays to flexible, functional large area devices and laid the groundwork for multijunction wire array cells. Fabrication techniques were developed to turn intrinsic Si wires into full p-n junctions and the wires were passivated with a-Si:H and a-SiNx:H. Single wire devices yielded open circuit voltages of 600 mV and efficiencies of 9%. The arrays were then embedded in a polymer and contacted with a transparent, flexible, Ni nanoparticle and Ag nanowire top contact. The contact connected >99% of the wires in parallel and yielded flexible, substrate free solar cells featuring hundreds of thousands of wires. Building on the success of the Si wire arrays, GaP was epitaxially grown on the material to create heterostructures for photoelectrochemistry. These cells were limited by low absorption in the GaP due to its indirect bandgap, and poor current collection due to a diffusion length of only 80 nm. However, GaAsP on SiGe offers a superior combination of materials, and wire architectures based on these semiconductors were investigated for multijunction arrays. These devices offer potential efficiencies of 34%, as demonstrated through an analytical model and optoelectronic simulations. SiGe and Ge wires were fabricated via chemical-vapor deposition and reactive ion etching. GaAs was then grown on these substrates at the National Renewable Energy Lab and yielded ns lifetime components, as required for achieving high efficiency devices.

  11. Imagination Visualized in Wire.

    ERIC Educational Resources Information Center

    Skophammer, Karen

    2003-01-01

    Describes an art lesson achieved with a Very Special Artist (VSA) in residence for sixth- and seventh-grade students in which they created wire sculptures. Discusses how the VSA taught the students. Includes a list of art materials and characteristics of wire. (CMK)

  12. Wire Transport Code

    SciTech Connect

    Caporaso, G.J.; Cole, A.G.

    1983-03-01

    The Wire Transport Code was developed to study the dynamics of relativistic-electron-beam propagation in the transport tube in which a wire-conditioning zone is present. In order for the beam to propagate successfully in the transport section it must be matched onto the wire by focusing elements. The beam must then be controlled by strong lenses as it exits the wire zone. The wire transport code was developed to model this process in substantial detail. It is able to treat axially symmetric problems as well as those in which the beam is transversely displaced from the axis of the transport tube. The focusing effects of foils and various beamline lenses are included in the calculations.

  13. Comparison of frictional forces between aesthetic orthodontic coated wires and self-ligation brackets

    PubMed Central

    Kim, Yunmi; Cha, Jung-Yul; Hwang, Chung-Ju; Tahk, Seon Gun

    2014-01-01

    Objective The purpose of this study was to evaluate the clinical efficacy of polymer- and rhodium-coated wires compared to uncoated wires by measuring the frictional forces using self-ligation brackets. Methods 0.016-inch nickel titanium (NiTi) wires and 0.017 × 0.025-inch stainless steel (SS) wires were used, and the angulations between the brackets and wires were set to 0°, 5°, and 10°. Upper maxillary premolar brackets (Clippy-C®) with a 0.022-inch slot were selected for the study and a tensile test was performed with a crosshead speed of 5 mm/min. The maximum static frictional forces and kinetic frictional forces were recorded and compared. Results The maximum static frictional forces and the kinetic frictional forces of coated wires were equal to or higher than those of the uncoated wires (p < 0.05). The maximum static frictional forces of rhodium-coated wires were significantly higher than those of polymer-coated wires when the angulations between the brackets and wires were set to (i) 5° in the 0.016-inch NiTi wires and (ii) all angulations in the 0.017 × 0.025-inch SS wires (p < 0.05). The kinetic frictional forces of rhodium-coated wires were higher than those of polymer-coated wires, except when the angulations were set to 0° in the 0.016-inch NiTi wires (p < 0.05). Conclusions Although the frictional forces of the coated wires with regards to aesthetics were equal to or greater than those of the uncoated wires, a study under similar conditions regarding the oral cavity is needed in order to establish the clinical implications. PMID:25133130

  14. Topological Mixing with Ghost Rods

    E-print Network

    Emmanuelle Gouillart; Jean-Luc Thiffeault; Matthew D. Finn

    2006-05-10

    Topological chaos relies on the periodic motion of obstacles in a two-dimensional flow in order to form nontrivial braids. This motion generates exponential stretching of material lines, and hence efficient mixing. Boyland et al. [P. L. Boyland, H. Aref, and M. A. Stremler, J. Fluid Mech. 403, 277 (2000)] have studied a specific periodic motion of rods that exhibits topological chaos in a viscous fluid. We show that it is possible to extend their work to cases where the motion of the stirring rods is topologically trivial by considering the dynamics of special periodic points that we call ghost rods, because they play a similar role to stirring rods. The ghost rods framework provides a new technique for quantifying chaos and gives insight into the mechanisms that produce chaos and mixing. Numerical simulations for Stokes flow support our results.

  15. Structural Steel Structural Steel Design

    E-print Network

    Toole, T. Michael

    Structural Steel Structural Steel Design EDUCATION MODULE Developed by T. Michael Toole, Ph.D., PE Daniel Treppel Stephen Van Nosdall Bucknell University Photo courtesy of Thinkstock #12;Structural Steel of Prevention through Design 42­77 50 Recap 78­79 5 References and Other Sources 80­86 -- #12;Structural Steel

  16. Coupled Multi-Electrode Investigation of Crevice Corrosion of 316 Stainless Steel and NiCrMo Alloy 625

    SciTech Connect

    F. Bocher; F.J. Presuel-Moreno; J.R. Scully

    2006-06-08

    Crevice corrosion is currently mostly studied using either one of two techniques depending on the information desired. The first method involves two multicrevice formers or washers fastened on both sides of a sample plate. This technique provides exposure information regarding the severity of crevice corrosion (depth, position, frequency of attack) but delivers little or no electrochemical information. The second method involves the potentiodynamic or potentiostatic study of an uncreviced sample in a model crevice solution or under a crevice former in aggressive solution where crevice corrosion may initiate and propagate and global current is recorded. However, crevice corrosion initiation and propagation behavior is highly dependent on exact position in the crevice over time. The distance from the crevice mouth will affect the solution composition, the pH, the ohmic potential drop and the true potential in the crevice. Coupled multi-electrode arrays (MEA) were used to study crevice corrosion in order to take in account spatial and temporal evolution of electrochemistry simultaneously. Scaling laws were used to rescale the crevice geometry while keeping the corrosion electrochemical properties equivalent to that of a natural crevice at a smaller length scale. one of the advantages was to be able to use commercial alloys available as wires electrode and, in the case of MEA, to spread the crevice corrosion over many individual electrodes so each one of them will have a near homogeneous electrochemical behavior. The initial step was to obtain anodic polarization curves for the relevant material in acid chloride solution which simulated the crevice electrolyte. using the software Crevicer{trademark}, the potential distribution inside the crevice as a function of the distance from the crevice mouth was determined for various crevice gaps and applied potentials, assuming constant chemistry throughout the crevice. The crevice corrosion initiation location x{sub crit} is the position where the potential drops to E{sub Flade}. Figure 1 illustrates the resulting x{sub crit} vs. G scaling laws for 316 Stainless Steel in 1 M HCl at 50 C. The coupled multi-wire array is composed of one hundred identical 316 Stainless Steel wires in a five by twenty formation inserted in a groove of a 316 Stainless Steel rod such that the ends of the wires are flush mounted with the rod. The 100 wires are coupled electrically through in-line zero resistance ammeters. The diameter of the wires (250 {micro}m) was chosen so that x{sub crit} (critical initiation distance from the crevice mouth) and the expected zone of crevice corrosion (predicted from the scaling law) would be larger than the radius of a single wire. The array created a flush mounted planar electrode with the surface/volume ratio obtained in planar crevices. The observation of the current evolution as a function of position inside and outside the crevice as function of time was made possible as illustrated in Figure 2 in 0.6 M NaCl at 50 C.

  17. 49 CFR 236.74 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...insulated wire; splice in underground wire. 236.74 Section...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT...insulated wire; splice in underground wire. Insulated wire...test purposes. Splice in underground wire shall have...

  18. 49 CFR 234.241 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...insulated wire; splice in underground wire. 234.241 Section...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT...insulated wire; splice in underground wire. Insulated wire...test purposes. A splice in underground wire shall have...

  19. 49 CFR 234.241 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...insulated wire; splice in underground wire. 234.241 Section...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT...insulated wire; splice in underground wire. Insulated wire...test purposes. A splice in underground wire shall have...

  20. 49 CFR 234.241 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...insulated wire; splice in underground wire. 234.241 Section...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT...insulated wire; splice in underground wire. Insulated wire...test purposes. A splice in underground wire shall have...

  1. 49 CFR 236.74 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...insulated wire; splice in underground wire. 236.74 Section...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT...insulated wire; splice in underground wire. Insulated wire...test purposes. Splice in underground wire shall have...

  2. 49 CFR 236.74 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...insulated wire; splice in underground wire. 236.74 Section...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT...insulated wire; splice in underground wire. Insulated wire...test purposes. Splice in underground wire shall have...

  3. 49 CFR 234.241 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...insulated wire; splice in underground wire. 234.241 Section...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT...insulated wire; splice in underground wire. Insulated wire...test purposes. A splice in underground wire shall have...

  4. 49 CFR 236.74 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...insulated wire; splice in underground wire. 236.74 Section...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT...insulated wire; splice in underground wire. Insulated wire...test purposes. Splice in underground wire shall have...

  5. 49 CFR 234.241 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...insulated wire; splice in underground wire. 234.241 Section...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT...insulated wire; splice in underground wire. Insulated wire...test purposes. A splice in underground wire shall have...

  6. 49 CFR 236.74 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...insulated wire; splice in underground wire. 236.74 Section...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT...insulated wire; splice in underground wire. Insulated wire...test purposes. Splice in underground wire shall have...

  7. A comparison of wire- and Kevlar-reinforced provisional restorations.

    PubMed

    Powell, D B; Nicholls, J I; Yuodelis, R A; Strygler, H

    1994-01-01

    Stainless steel wire 0.036 inch in diameter was compared with Kevlar 49 polyaramid fiber as a means of reinforcing a four-unit posterior provisional fixed restoration with 2 pontics. Three reinforcement patterns for wire and two for Kevlar 49 were evaluated and compared with the control, which was an unreinforced provisional restoration. A central tensile load was placed on the cemented provisional restoration and the variables were measured: (1) the initial stiffness; (2) the load at initial fracture; and (3) the unit toughness, or the energy stored in the beam at a point where the load had undergone a 1.0-mm deflection. Statistical analysis showed (1) the bent wire configuration had a significantly higher initial stiffness (P < or = .05), (2) there was no difference between designs for load at initial fracture, and (3) the bent wire had a significantly higher unit toughness value (P < or = .05). PMID:8179789

  8. Orbiter Kapton wire operational requirements and experience

    NASA Technical Reports Server (NTRS)

    Peterson, R. V.

    1994-01-01

    The agenda of this presentation includes the Orbiter wire selection requirements, the Orbiter wire usage, fabrication and test requirements, typical wiring installations, Kapton wire experience, NASA Kapton wire testing, summary, and backup data.

  9. Next Generation Wiring

    NASA Technical Reports Server (NTRS)

    Medelius, Petro; Jolley, Scott; Fitzpatrick, Lilliana; Vinje, Rubiela; Williams, Martha; Clayton, LaNetra; Roberson, Luke; Smith, Trent; Santiago-Maldonado, Edgardo

    2007-01-01

    Wiring is a major operational component on aerospace hardware that accounts for substantial weight and volumetric space. Over time wire insulation can age and fail, often leading to catastrophic events such as system failure or fire. The next generation of wiring must be reliable and sustainable over long periods of time. These features will be achieved by the development of a wire insulation capable of autonomous self-healing that mitigates failure before it reaches a catastrophic level. In order to develop a self-healing insulation material, three steps must occur. First, methods of bonding similar materials must be developed that are capable of being initiated autonomously. This process will lead to the development of a manual repair system for polyimide wire insulation. Second, ways to initiate these bonding methods that lead to materials that are similar to the primary insulation must be developed. Finally, steps one and two must be integrated to produce a material that has no residues from the process that degrades the insulating properties of the final repaired insulation. The self-healing technology, teamed with the ability to identify and locate damage, will greatly improve reliability and safety of electrical wiring of critical systems. This paper will address these topics, discuss the results of preliminary testing, and remaining development issues related to self-healing wire insulation.

  10. Engineering task plan and status of 241-S-106 Enraf level gauge wire break

    SciTech Connect

    Moore, T.L.

    1994-09-01

    This report discusses the findings of a task team which was formed which identified the need for short-term actions to re-establish tank waste level monitoring and to permanently address wire failure. The failed wire was removed and sent to Pacific Northwest Laboratory (PNL) for analysis. It was determined that the cause of the wire failure was due to chloride ion stress corrosion cracking (SCC) of the 316 stainless steel (SS) wire. Radiation induced breakdown of the polyvinyl chloride (PVC) riser liners is suspected to be the source of the chloride ions.

  11. Landing Gear Components Noise Study - PIV and Hot-Wire Measurements

    NASA Technical Reports Server (NTRS)

    Hutcheson, Florence V.; Burley, Casey L.; Stead, Daniel J.; Becker, Lawrence E.; Price, Jennifer L.

    2010-01-01

    PIV and hot-wire measurements of the wake flow from rods and bars are presented. The test models include rods of different diameters and cross sections and a rod juxtaposed to a plate. The latter is representative of the latch door that is attached to an aircraft landing gear when the gear is deployed, while the single and multiple rod configurations tested are representative of some of the various struts and cables configuration present on an aircraft landing gear. The test set up is described and the flow measurements are presented. The effect of model surface treatment and freestream turbulence on the spanwise coherence of the vortex shedding is studied for several rod and bar configurations.

  12. The role of temperature in copper wire drawing

    NASA Astrophysics Data System (ADS)

    Noseda, Corrado

    Wire is produced by drawing, which consists of pulling a rod of the material to be processed through a series of funnel-shaped holes, or dies, of decreasing size. Drawing involves plastic deformation and friction within the contact zone between the wire and the die. These occurrences contribute to the generation of heat in the wire, which may affect its final properties. High drawing speeds and the use of several dies in one production line---to improve productivity---may accentuate heating to a point where recrystallization of the wire material sets in and its properties are affected. Also, excessive temperatures may lead to an accelerated deterioration of the lubricants used, to the point that the optimum lubrication mechanism is no longer prevailing, with consequent negative effects on the surface quality of the processed wire. A number of analytical models estimating the temperature increase in drawn wires, due to the dissipation of plastic deformation energy and to the friction between wire and die, were reviewed. While all models agree on the contribution of plastic deformation to heating, some discrepancies exist as to the effect of friction. The original treatment, developed in Germany in 1943, provided slightly higher peak temperature values than other models for the parameters used in the calculations, which are simulative of commercial practice on copper wire. A finite element study conducted in the framework of this research showed that the axial heat flow within the wire, which was assumed to be negligible in the reviewed analytical theories, could, in fact, not be disregarded. It also showed that a purely isothermal process cannot be obtained in practice, whatever adjustment of the process parameters is undertaken. In order to unequivocally correlate the effects of heating on the properties of wire and the temperature it experiences during commercial drawing, electrolytic tough pitch copper wire was drawn under independently controlled, quasi-isothermal temperature conditions at 25°C, 100°C, 150°C, 200°C, and 250°C using a custom designed apparatus. The surface appearance, together with the calculated coefficients of friction, gave indications as to the prevailing lubrication mechanism, which turned out to be of the boundary type in most cases, except at 100°C, where surface shaving was observed. Hardness measurements, tensile testing, metallographical investigations, as well as texture analysis indicated that at least partial recrystallization occurs when the wire is exposed to temperatures of 200°C and beyond during drawing. An account was also given on the annealing response of the as-drawn wire, by applying the concept of annealing index, a parameter that encompasses annealing time and temperature.

  13. Investigation of mechanical properties of cryogenically treated music wire.

    PubMed

    Heptonstall, A; Waller, M; Robertson, N A

    2015-08-01

    It has been reported that treating music wire (high carbon steel wire) by cooling to cryogenic temperatures can enhance its mechanical properties with particular reference to those properties important for musical performance. We use such wire for suspending many of the optics in Advanced LIGO, the upgrade to LIGO—the Laser Interferometric Gravitational-Wave Observatory. Two properties that particularly interest us are mechanical loss and breaking strength. A decrease in mechanical loss would directly reduce the thermal noise associated with the suspension, thus enhancing the noise performance of mirror suspensions within the detector. An increase in strength could allow thinner wire to be safely used, which would enhance the dilution factor of the suspension, again leading to lower suspension thermal noise. In this article, we describe the results of an investigation into some of the mechanical properties of music wire, comparing untreated wire with the same wire which has been cryogenically treated. For the samples we studied, we conclude that there is no significant difference in the properties of interest for application in gravitational wave detectors. PMID:26329213

  14. Investigation of mechanical properties of cryogenically treated music wire

    NASA Astrophysics Data System (ADS)

    Heptonstall, A.; Waller, M.; Robertson, N. A.

    2015-08-01

    It has been reported that treating music wire (high carbon steel wire) by cooling to cryogenic temperatures can enhance its mechanical properties with particular reference to those properties important for musical performance. We use such wire for suspending many of the optics in Advanced LIGO, the upgrade to LIGO—the Laser Interferometric Gravitational-Wave Observatory. Two properties that particularly interest us are mechanical loss and breaking strength. A decrease in mechanical loss would directly reduce the thermal noise associated with the suspension, thus enhancing the noise performance of mirror suspensions within the detector. An increase in strength could allow thinner wire to be safely used, which would enhance the dilution factor of the suspension, again leading to lower suspension thermal noise. In this article, we describe the results of an investigation into some of the mechanical properties of music wire, comparing untreated wire with the same wire which has been cryogenically treated. For the samples we studied, we conclude that there is no significant difference in the properties of interest for application in gravitational wave detectors.

  15. Dual wire weld feed proportioner

    NASA Technical Reports Server (NTRS)

    Nugent, R. E.

    1968-01-01

    Dual feed mechanism enables proportioning of two different weld feed wires during automated TIG welding to produce a weld alloy deposit of the desired composition. The wires are fed into the weld simultaneously. The relative feed rates of the wires and the wire diameters determine the weld deposit composition.

  16. Quantum cards and quantum rods

    E-print Network

    Milan Batista; Joze Peternelj

    2006-11-02

    Quantum mechanical analysis of a rigid rod with one end fixed to a flat table is presented. It is shown, that for a macroscopic rod the ground state is orientationally delocalized only if the table is absolutely horizontal. In this latter case the rod, assumed to be initally in the upright orientation, falls down symmetrically and simultaneously in both directions, as claimed by Tegmark and Wheeler. In addition, the time of fall is calculated using WKB wavefunctions representing energy eigenstates near the barrier summit.

  17. Rod coupling for oil well sucker rods and the like

    SciTech Connect

    Bowers, R.

    1986-07-29

    A coupling is described for joining solid reciprocating sucker rods to form a rod string in a well pump or the like comprising a unitary metal sleeve having an axial threaded bore and an irregular outer surface, and a homogeneous and non-fibrous coating on the sleeve over the outer surface providing an externally substantially cylindrical coupling, the coating comprising a flexible and abrasive resistant thermoplastic hydrourethane polymer formed on the irregular outer surface of the sleeve while in the molten state.

  18. A Swinging Wire.

    ERIC Educational Resources Information Center

    Auty, Geoff

    1993-01-01

    Outlines a safer alternative to the traditional physics demonstration known as the "kicking wire" experiment. The new method eliminates the use of an open dish of mercury but is less dramatic in the visible effects it produces. (DDR)

  19. Deposition of wear-resistant steel surfaces by the plasma rotating electrode coating process

    NASA Astrophysics Data System (ADS)

    Kim, Michael Robert

    A high-deposition rate thermal spray method was investigated for the purpose of coating aluminum cylinder bores with a wear resistant surface. This method, the plasma rotating electrode coating system (PROTEC) utilized transferred-arc melting of a rapidly rotating consumable electrode to create a droplet stream via centrifugal atomization. A cylindrical substrate was placed around the rotating rod, in the flight path of the droplets, to deposit a coating onto the internal surface of the cylinder. Selected coatings of 1045 steel deposited by the PROTEC coating method exhibited lower wear loss in lubricated sliding than wire-arc sprayed carbon steel coatings and gray cast iron. Splat cohesion was shown to be a significant factor in the wear resistance of PROTEC coatings. The relationship between deposition enthalpy and cooling rate of the coating was found to have the greatest effect on coating microstructure, and the coating cohesion. The most rapidly solidified coatings showed inferior splat cohesion in comparison to coatings that cooled more slowly. The increase in splat cohesion with decreased cooling rate was accompanied by the formation of a directionally oriented coating microstructure, likely formed during cellular solidification of the coating. A model describing the thermal state of the deposition process was used to predict the deposition conditions that would result in a cellular structure, and the level of splat cohesion required to produce a wear resistant coating.

  20. Splicing Wires Permanently With Explosives

    NASA Technical Reports Server (NTRS)

    Bement, Laurence J.; Kushnick, Anne C.

    1990-01-01

    Explosive joining process developed to splice wires by enclosing and metallurgically bonding wires within copper sheets. Joints exhibit many desirable characteristics, 100-percent conductivity and strength, no heat-induced annealing, no susceptibility to corrosion in contacts between dissimilar metals, and stability at high temperature. Used to join wires to terminals, as well as to splice wires. Applicable to telecommunications industry, in which millions of small wires spliced annually.

  1. 30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 75.1003 Section 75.1003... MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Trolley Wires and Trolley Feeder Wires §...

  2. 30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 30 Mineral Resources 1 2011-07-01 2011-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 75.1003 Section 75.1003... MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Trolley Wires and Trolley Feeder Wires §...

  3. 30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...Resources 1 2012-07-01 2012-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires...MINES Trolley Wires and Trolley Feeder Wires § 75.1003 Insulation of trolley wires, trolley feeder wires and bare signal...

  4. 30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...Resources 1 2013-07-01 2013-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires...MINES Trolley Wires and Trolley Feeder Wires § 77.1802 Insulation of trolley wires, trolley feeder wires and bare signal...

  5. 30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...Resources 1 2011-07-01 2011-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires...MINES Trolley Wires and Trolley Feeder Wires § 77.1802 Insulation of trolley wires, trolley feeder wires and bare signal...

  6. 30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Resources 1 2010-07-01 2010-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires...MINES Trolley Wires and Trolley Feeder Wires § 77.1802 Insulation of trolley wires, trolley feeder wires and bare signal...

  7. 30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...Resources 1 2014-07-01 2014-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires...MINES Trolley Wires and Trolley Feeder Wires § 75.1003 Insulation of trolley wires, trolley feeder wires and bare signal...

  8. 30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...Resources 1 2013-07-01 2013-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires...MINES Trolley Wires and Trolley Feeder Wires § 75.1003 Insulation of trolley wires, trolley feeder wires and bare signal...

  9. 30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...Resources 1 2012-07-01 2012-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires...MINES Trolley Wires and Trolley Feeder Wires § 77.1802 Insulation of trolley wires, trolley feeder wires and bare signal...

  10. 30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...Resources 1 2011-07-01 2011-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires...MINES Trolley Wires and Trolley Feeder Wires § 75.1003 Insulation of trolley wires, trolley feeder wires and bare signal...

  11. 30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Resources 1 2010-07-01 2010-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires...MINES Trolley Wires and Trolley Feeder Wires § 75.1003 Insulation of trolley wires, trolley feeder wires and bare signal...

  12. 30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...Resources 1 2014-07-01 2014-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires...MINES Trolley Wires and Trolley Feeder Wires § 77.1802 Insulation of trolley wires, trolley feeder wires and bare signal...

  13. Enamel Insulated Copper Wire in Electric Motors: Sliding Behavior and Possible Damage Mechanisms During Die Bending

    NASA Astrophysics Data System (ADS)

    Demiri, Albion

    This study investigates the sliding friction and the forming behaviour of enamel insulated copper wire during the die-forming process. It also aims to determine potential damage mechanisms to the wire during bending process for electric motor coils. In this investigation a wire-bending machine was designed and built in order to simulate the wire forming process in a laboratory scale. Bending angle of the wire and the bending radii were used to control the strain on the wire surface. The effect of speed on COF was investigated for different speeds of of 1, 5, 10, 15, and 20mm/s. A positive correlation was observed between the COF and the testing speed. Additionally, the effect of strain on COF was studied for 2% and 23% to determine its influence on the COF. A general trend was observed of decreased COF with increased strain in wires. Finally, the ability of the enamel coating to resist external damage and wire strain was investigated by tensile testing of pre-scratched magnet wire. The results showed that wire enamel can withstand significant surface damage prior to breach and failure. The insulating polymer coating failed under the scratch tests at 20N load using a Rockwell indenter and at 5N load using a 90° conical steel indenter. Additional tests, such as tensile testing, scratch testing and reciprocating friction testing, were used to characterize the mechanical and tribological properties of the enamel insulated copper wire.

  14. The Expected but Well-Hidden EMF in the Jumping Wire Experiment and Its Unexpected Role

    ERIC Educational Resources Information Center

    Donoso, G.; Ladera, C. L.

    2015-01-01

    As presented in physics textbooks, as well as in a few papers, the typical example of an induced motional electromotive force e[subscript mot] = "Blv" consists of a conductive rod of length "l" frictionlessly sliding with speed v along parallel wires within an orthogonal and constant uniform magnetic field of magnitude…

  15. Wire Array Solar Cells: Fabrication and Photoelectrochemical Studies

    NASA Astrophysics Data System (ADS)

    Spurgeon, Joshua Michael

    Despite demand for clean energy to reduce our addiction to fossil fuels, the price of these technologies relative to oil and coal has prevented their widespread implementation. Solar energy has enormous potential as a carbon-free resource but is several times the cost of coal-produced electricity, largely because photovoltaics of practical efficiency require high-quality, pure semiconductor materials. To produce current in a planar junction solar cell, an electron or hole generated deep within the material must travel all the way to the junction without recombining. Radial junction, wire array solar cells, however, have the potential to decouple the directions of light absorption and charge-carrier collection so that a semiconductor with a minority-carrier diffusion length shorter than its absorption depth (i.e., a lower quality, potentially cheaper material) can effectively produce current. The axial dimension of the wires is long enough for sufficient optical absorption while the charge-carriers are collected along the shorter radial dimension in a massively parallel array. This thesis explores the wire array solar cell design by developing potentially low-cost fabrication methods and investigating the energy-conversion properties of the arrays in photoelectrochemical cells. The concept was initially investigated with Cd(Se, Te) rod arrays; however, Si was the primary focus of wire array research because its semiconductor properties make low-quality Si an ideal candidate for improvement in a radial geometry. Fabrication routes for Si wire arrays were explored, including the vapor-liquid-solid growth of wires using SiCl4. Uniform, vertically aligned Si wires were demonstrated in a process that permits control of the wire radius, length, and spacing. A technique was developed to transfer these wire arrays into a low-cost, flexible polymer film, and grow multiple subsequent arrays using a single Si(111) substrate. Photoelectrochemical measurements on Si wire array/polymer composite films showed that their energy-conversion properties were comparable to those of an array attached to the growth substrate. High quantum efficiencies were observed relative to the packing density of the wires, particularly with illumination at high angles of incidence. The results indicate that an inexpensive, solid-state Si wire array solar cell is possible, and a plan is presented to develop one.

  16. Nuclear design of Helical Cruciform Fuel rods

    SciTech Connect

    Shirvan, K.; Kazimi, M. S.

    2012-07-01

    In order to increase the power density of current and new light water reactor designs, the Helical Cruciform Fuel (HCF) rods are proposed. The HCF rods are equivalent to a cylindrical rod, with the fuel in a cruciform shaped, twisted axially. The HCF rods increase the surface area to volume ratio and inter-subchannel mixing behavior due to their cruciform and helical shapes, respectively. In a previous study, the HCF rods have shown the potential to up-rate existing PWRs by 50% and BWRs by 25%. However, HCF rods do display different neutronics modeling and performance. The cruciform cross section of HCF rods creates radially asymmetric heat generation and temperature distribution. The nominal HCF rod's beginning of life reactivity is reduced, compared to a cylindrical rod with the same fuel volume, by 500 pcm, due to increase in absorption in cladding. The rotation of these rods accounts for reactivity changes, which depends on the H/HM ratio of the pin cell. The HCF geometry shows large sensitivities to U{sup 235} or gadolinium enrichments compared to a cylindrical geometry. In addition, the gadolinium-containing HCF rods show a stronger effect on neighboring HCF rods than in case of cylindrical rods, depending on the orientation of the HCF rods. The helical geometry of the rods introduces axial shadowing of about 600 pcm, not seen in typical cylindrical rods. (authors)

  17. Fume generation rates for stainless steel, nickel and aluminum alloys

    SciTech Connect

    Castner, H.R.

    1996-12-01

    This paper describes a study of the effects of pulsed welding current on fume produced during gas metal arc welding (GMAW) of stainless steel, nickel, and aluminum alloys. This is an extension of earlier studies of mild steel electrode wire. Reduction of welding fume is important because steady current GMAW of stainless steels and nickel alloys may produce fume that exceeds recommended worker exposure limits for some of the fume constituents. Fume generation from aluminum alloy ER5356 was studied because steady current welding with this alloy produces much higher fume generation rates than ER4043 alloy electrode wire. This work shows that pulsed current can reduce GMAW fume generation rates for Er308L, ER310, and ER312 stainless steel, ERNiCr-3 nickel alloy, and ER5356 aluminum-magnesium alloy electrode wires.

  18. Rewetting of hot vertical rod during jet impingement surface cooling

    NASA Astrophysics Data System (ADS)

    Agrawal, Chitranjan; Kumar, Ravi; Gupta, Akhilesh; Chatterjee, Barun

    2015-07-01

    A stainless steel (SS-316) vertical rod of 12 mm diameter at 800 ± 10 °C initial temperature was cooled by normal impinging round water jet. The surface rewetting phenomenon was investigated for a range of jet diameter 2.5-4.8 mm and jet Reynolds number 5000-24,000 using a straight tube type nozzle. The investigation were made from the stagnation point to maximum 40 mm downstream locations, simultaneously for both upside and downside directions. The cooling performance of the vertical rod was evaluated on the basis of rewetting parameters i.e. rewetting temperature, wetting delay, rewetting velocity and the maximum surface heat flux. Two separate Correlations have been proposed for the dimensionless rewetting velocity in terms of rewetting number and the maximum surface heat flux that predicts the experimental data within an error band of ±20 and ±15 % respectively.

  19. RP cone-rod degeneration.

    PubMed Central

    Heckenlively, J R

    1987-01-01

    A group of patients with progressive retinal degeneration and visual field loss, who meet the basic definition of RP were investigated to better define the relationship of the findings on the ERG with clinical characteristics such as visual field size, presence or absence of scotomata or pseudo-altitudinal defects on visual field, amount of night blindness; and presence or absence of macular or optic nerve changes. These studies suggest that cone-rod degeneration patients of the RP type go through the following stages; early, the ERG has a definite cone-rod pattern where the rod ERG is larger than the cone ERG while both are abnormal. As the disease advances, there is more of a reduction in the scotopic ERG such that both the rod and cone ERGs become nearly equal. As the disease further progresses the ERG becomes non-recordable on single-flash technique, but there is good residual rod function and the final rod threshold remains good until the visual field is reduced, typically less than 10 degrees with the IV-4 isopter. Finally with advanced disease the patient becomes night blind and generally becomes very difficult to distinguished from patients who have advanced rod-cone degeneration. While it may seem logical to find that visual field size correlates with various ERG parameters; this has not been as consistent a finding in patients with rod-cone degeneration in the author's experience. The analysis shows several new pieces of information about visual field changes in cone-rod degeneration; enlarged blind spots are seen earlier in cases which have recordable cone-rod patterns (group I), and pseudo-altitudinal changes are more likely to occur in autosomal recessive patients. Patients with macular lesions and central scotomata had larger amplitudes than patients with normal appearing maculae and no central scotomata. Patients with temporal optic atrophy had an earlier onset of symptoms and significant correlation with both photopic a- and b-waves and bright flash dark-adapted b-wave implicit times. Macular edema was present in patients with smaller amplitudes and longer implicit times which suggest that these patients have greater panretinal dysfunction which correlates with the macular alterations. Pigment changes within the classes of none, mild, and moderate deposition correlated with ERG parameters; there was more pigment in cases where ERG parameters were worse. However, cases with heavy pigmentation did not correlate with the ERG degree of severity, suggesting that independent factors influence the amount of pigmentation that occurs in these cases. PMID:3447340

  20. Fretting wear of a high-strength heavily work-hardened eutectoid steel

    NASA Astrophysics Data System (ADS)

    Waterhouse, R. B.; McColl, I. R.; Harris, S. J.; Tsujikawa, M.

    1994-06-01

    This is the second paper in an informal series of three on the fretting behavior of a heavily work-hardened eutectoid steel wire, used in the construction of locked coil steel ropes. The fretting behavior of the wire, both in the service surface condition and after mechanical abrasion, is examined. Residual solid die lubricant, from the wire drawing manufacturing process, present both on the surface of the wire and as a reservoir in the drawing marks is determined to play an important role in the fretting behavior. In particular, it is capable of maintaining the coefficient of friction at a low value, at least during the early stages of fretting.

  1. Proceedings of the 30th mechanical working and steel processing conference

    SciTech Connect

    Not Available

    1989-01-01

    This book contains the proceedings of the 30th mechanical working and steel processing conference. Topics covered include: tubular products, bar, rod, and semifinishing products, flat rolled products, heavy forgings, roll technology, and coatings.

  2. Fabrication of Wire Mesh Heat Exchangers for Waste Heat Recovery Using Wire-Arc Spraying

    NASA Astrophysics Data System (ADS)

    Rezaey, R.; Salavati, S.; Pershin, L.; Coyle, T.; Chandra, S.; Mostaghimi, J.

    2014-04-01

    Waste heat can be recovered from hot combustion gases using water-cooled heat exchangers. Adding fins to the external surfaces of the water pipes inserted into the hot gases increases their surface area and enhances heat transfer, increasing the efficiency of heat recovery. A method of increasing the heat transfer surface area has been developed using a twin wire-arc thermal spray system to generate a dense, high-strength coating that bonds wire mesh to the outside surfaces of stainless steel pipes through which water passes. At the optimum spray distance of 150 mm, the oxide content, coating porosity, and the adhesion strength of the coating were measured to be 7%, 2%, and 24 MPa, respectively. Experiments were done in which heat exchangers were placed inside a high-temperature oven with temperature varying from 300 to 900 °C. Several different heat exchanger designs were tested to estimate the total heat transfer in each case. The efficiency of heat transfer was found to depend strongly on the quality of the bond between the wire meshes and pipes and the size of openings in the wire mesh.

  3. Demonstrating diamond wire cutting of the TFTR

    SciTech Connect

    Rule, K.; Perry, E.; Larson, S.; Viola, M.

    2000-02-24

    The Tokamak Fusion Test Reactor (TFTR) ceased operation in April 1997 and decommissioning commenced in October 1999. The deuterium-tritium fusion experiments resulted in contaminating the vacuum vessel with tritium and activating the materials with 14 Mev neutrons. The total tritium content within the vessel is in excess of 7,000 Curies while dose rates approach 50 mRem/hr. These radiological hazards along with the size of the Tokamak (100 cubic meters) present a unique and challenging task for dismantling. Plasma arc cutting is the current baseline technology for the dismantlement of fission reactors. This technology is typically used because of its faster cutting times. Alternatively, an innovative approach for dismantlement of the TFTR is the use of diamond wire cutting technology. Recent improvements in diamond wire technology have allowed the cutting of carbon steel components such as pipe, plate, and tube bundles in heat exchangers. Some expected benefits of this technology include: significantly reduction in airborne contaminates, reduced personnel exposure, a reduced risk of spread of tritium contamination, and reduced overall costs as compared to using plasma arc cutting. This paper will provide detailed results of the diamond wire cutting demonstration that was completed in September of 1999, on a mock-up of this complex reactor. The results will identify cost, safety, industrial and engineering parameters, and the related performance of each situation.

  4. Wire brush fastening device

    SciTech Connect

    Meigs, R.A.

    1993-08-31

    A fastening device is provided which is a variation on the conventional nut and bolt. The bolt has a longitudinal axis and threading helically affixed thereon along the longitudinal axis. A nut having a bore extending therethrough is provided. The bore of the nut has a greater diameter than the diameter of the bolt so the bolt can extend through the bore. An array of wire bristles are affixed within the bore so as to form a brush. The wire bristles extend inwardly from the bore and are constructed and arranged of the correct size, length and stiffness to guide the bolt within the bore and to restrain the bolt within the bore as required. A variety of applications of the wire brush nut are disclosed, including a bolt capture device and a test rig apparatus.

  5. Wire brush fastening device

    DOEpatents

    Meigs, R.A.

    1995-09-19

    A fastening device is provided which is a variation on the conventional nut and bolt. The bolt has a longitudinal axis and threading helically affixed thereon along the longitudinal axis. A nut having a bore extending therethrough is provided. The bore of the nut has a greater diameter than the diameter of the bolt so the bolt can extend through the bore. An array of wire bristles are affixed within the bore so as to form a brush. The wire bristles extend inwardly from the bore and are constructed and arranged of the correct size, length and stiffness to guide the bolt within the bore and to restrain the bolt within the bore as required. A variety of applications of the wire brush nut are disclosed, including a bolt capture device and a test rig apparatus. 13 figs.

  6. Microphase separation in polydisperse rod-rod diblock copolymer melt

    NASA Astrophysics Data System (ADS)

    Aliev, M. A.; Kuzminyh, N. Yu.

    2015-08-01

    The stability limits of the isotropic state of melt of rod-rod AB polydisperse diblock copolymer have been studied within weak segregation theory. The number of units in A block is assumed to be a random variable distributed by the Schulz-Zimm distribution. Inspection of the spinodal curves shows that the copolymer melt with polydisperse rigid blocks is less stable with respect to formation of the nematic and microphase separated states than the monodisperse melt. The values of ratios between strengths of isotropic and anisotropic interactions in the system strongly influences the forms of isotropic-nematic boundary curves.

  7. Microphase separation in polydisperse rod-rod diblock copolymer melt.

    PubMed

    Aliev, M A; Kuzminyh, N Yu

    2015-08-28

    The stability limits of the isotropic state of melt of rod-rod AB polydisperse diblock copolymer have been studied within weak segregation theory. The number of units in A block is assumed to be a random variable distributed by the Schulz-Zimm distribution. Inspection of the spinodal curves shows that the copolymer melt with polydisperse rigid blocks is less stable with respect to formation of the nematic and microphase separated states than the monodisperse melt. The values of ratios between strengths of isotropic and anisotropic interactions in the system strongly influences the forms of isotropic-nematic boundary curves. PMID:26328869

  8. Flying wires at Fermilab

    SciTech Connect

    Gannon, J.; Crawford, C.; Finley, D.; Flora, R.; Groves, T.; MacPherson, M.

    1989-03-01

    Transverse beam profile measurement systems called ''Flying Wires'' have been installed and made operational in the Fermilab Main Ring and Tevatron accelerators. These devices are used routinely to measure the emittance of both protons and antiprotons throughout the fill process, and for emittance growth measurements during stores. In the Tevatron, the individual transverse profiles of six proton and six antiproton bunches are obtained simultaneously, with a single pass of the wire through the beam. Essential features of the hardware, software, and system operation are explained in the rest of the paper. 3 refs., 4 figs.

  9. Advanced gray rod control assembly

    DOEpatents

    Drudy, Keith J; Carlson, William R; Conner, Michael E; Goldenfield, Mark; Hone, Michael J; Long, Jr., Carroll J; Parkinson, Jerod; Pomirleanu, Radu O

    2013-09-17

    An advanced gray rod control assembly (GRCA) for a nuclear reactor. The GRCA provides controlled insertion of gray rod assemblies into the reactor, thereby controlling the rate of power produced by the reactor and providing reactivity control at full power. Each gray rod assembly includes an elongated tubular member, a primary neutron-absorber disposed within the tubular member said neutron-absorber comprising an absorber material, preferably tungsten, having a 2200 m/s neutron absorption microscopic capture cross-section of from 10 to 30 barns. An internal support tube can be positioned between the primary absorber and the tubular member as a secondary absorber to enhance neutron absorption, absorber depletion, assembly weight, and assembly heat transfer characteristics.

  10. NewsWire, 2002.

    ERIC Educational Resources Information Center

    Byrom, Elizabeth, Ed.; Bingham, Margaret, Ed.; Bowman, Gloria, Ed.; Shoemaker, Dan, Ed.

    2002-01-01

    This document presents the 3 2002 issues of the newsletter "NewsWire," (volume 5). Issue Number One focuses on collaborative Web projects. This issue begins with descriptions of four individual projects: "iEARN"; "Operation RubyThroat"; "Follow the Polar Huskies!"; and "Log in Your Animal Roadkill!" Features that follow include: "Bringing the…

  11. Wired To Flex.

    ERIC Educational Resources Information Center

    Fickes, Michael

    2000-01-01

    Discusses wire and cable management solutions school construction committees can use that do not limit flexibility. Topics cover such areas as using perimeter raceways in classrooms, incorporating a flexible communications cabling infrastructure in to the initial design, and answering the question of how to meet future requirements and…

  12. Weld-Wire Monitor

    NASA Technical Reports Server (NTRS)

    Olson, R.; Hall, R.

    1982-01-01

    Changes in the size or composition of weld wire being fed to an automatic welding machine are detected by an impedance-monitoring instrument. The instrument triggers an alarm if the changes would affect weld quality or cause weld failure. Device could find applications in construction of pipelines or nuclear powerplants.

  13. A World without Wires

    ERIC Educational Resources Information Center

    Panettieri, Joseph C.

    2006-01-01

    The wireless bandwagon is rolling across Mississippi, picking up a fresh load of converts and turning calamity into opportunity. Traditional wired school networks, many of which unraveled during Hurricane Katrina, are giving way to advanced wireless mesh networks that frequently include voice-over-IP (VoIP) capabilities. Vendor funding is helping…

  14. Improved wire chamber

    DOEpatents

    Atac, M.

    1987-05-12

    An improved gas mixture for use with proportional counter devices, such as Geiger-Mueller tubes and drift chambers. The improved gas mixture provides a stable drift velocity while eliminating wire aging caused by prior art gas mixtures. The new gas mixture is comprised of equal parts argon and ethane gas and having approximately 0.25% isopropyl alcohol vapor. 2 figs.

  15. Blackboard by Wire 

    E-print Network

    Unknown

    2011-08-17

    is to use the new diagnostic to specifically elucidate the physics of large Atwood number, ( )( )2 1 2 1 / ? ? ? ? + ? = t A , RT mixing. Both of these objectives have been satisfied through the development of a new hot-wire diagnostic to study buoyancy...

  16. Nickel content of as-received and retrieved NiTi and stainless steel archwires: assessing the nickel release hypothesis.

    PubMed

    Eliades, Theodore; Zinelis, Spiros; Papadopoulos, Moschos A; Eliades, George; Athanasiou, Athanasios E

    2004-04-01

    This study assesses the nickel content of as-received and retrieved stainless steel and NiTi archwires alloys. New and used brand-matched, composition-matched, and cross section-matched archwires were subjected to scanning electron microscopy and energy-dispersive electron probe microanalysis. Elemental analysis was performed on three randomly selected areas, and the nickel content, expressed as ratios of Ni/Ti (in NiTi wires) or Ni/Fe (in stainless steel), was statistically analyzed with a t-test (alpha = .05). No changes were detected with respect to Ni content ratios between as-received and retrieved NiTi or stainless steel wires, suggesting an absence of nickel release. Wear and delamination phenomena on the wire surface and the formation of galvanic couple between the stainless steel wires and bracket brazing materials intraorally may modify the corrosion susceptibility of the wire alloys in clinical conditions. PMID:15132439

  17. Combustion of 316 stainless steel in high-pressure gaseous oxygen

    NASA Technical Reports Server (NTRS)

    Benz, Frank; Steinberg, Theodore A.; Janoff, Dwight

    1989-01-01

    Upward combustion of 316 stainless steel (SS) rods is discussed and a combustion model is presented. The effects of varying oxygen pressure and rod diameter on the rate limiting processes for combustion of 316 SS are evaluated. The rate-limiting steps for combustion up 316 SS rods are shown to be dependent on the incorporation and mass transport of oxygen in the molten mass, and heat transfer between the molten mass and rod. Both these rate-limiting steps are shown to be dependent on rod diameter. Small (d/r/ = 0.051 cm) 316 SS rods are shown to be dependent on convective heat transfer, and larger rods (d/r/ not less than 0.32 cm) are shown to be dependent on oxygen incorporation and mass transport in the molten mass.

  18. 75 FR 26199 - Stainless Steel Bar from India: Partial Rescission of Antidumping Duty Administrative Review

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-11

    ...of initiation of this antidumping duty administrative review, covering Venus Wire Industries Pvt. Ltd/Precision Metals/Sieves Manufacturers (India) Private Limited, Facor, Mukand, and India Steel. See Initiation of Antidumping and...

  19. Characteristics of large capacity ultrasonic complex vibration sources with stepped complex transverse vibration rods.

    PubMed

    Tsujino, J; Ueoka, T

    2004-04-01

    Configurations of large capacity ultrasonic complex vibration sources with multiple longitudinal transducers are proposed and studied. The ultrasonic complex vibration systems are effective and essential for new applications in various industries. The complex vibration source of 27 kHz consists of a complex transverse rod with a welding tip (aluminum alloy, stainless steel and titanium alloy), a complex vibration rod with a flange and stepped part for holding the system, a circular longitudinal vibration disk (aluminum alloy) and six bolt-clamped Langevin type PLT transducers. Three transducer pairs are driven simultaneously using three driving systems at phase difference 120 degrees, and almost circular vibration locus is obtained. PMID:15047267

  20. Solid-state-laser-rod holder

    DOEpatents

    Gettemy, D.J.; Barnes, N.P.; Griggs, J.E.

    1981-08-11

    The disclosure relates to a solid state laser rod holder comprising Invar, copper tubing, and epoxy joints. Materials and coefficients of expansion of the components of the holder combine with the rod to produce a joint which will give before the rod itself will. The rod may be lased at about 70 to 80/sup 0/K and returned from such a temperature to room temperature repeatedly without its or the holder's destruction.

  1. Two-stage epitaxial growth of vertically-aligned SnO2 nano-rods on (001) ceria

    SciTech Connect

    Solovyov, VF; Wu, LJ; Rupich, MW; Sathyamurthy, S; Li, XP; Li, Q

    2014-12-15

    Growth of high-aspect ratio oriented tin oxide, SnO2, nano-rods is complicated by a limited choice of matching substrates. We show that a (001) cerium oxide, CeO2, surface uniquely enables epitaxial growth of tin-oxide nano-rods via a two-stage process. First, (100) oriented nano-wires coat the ceria surface by lateral growth, forming a uniaxially-textured SnO2 deposit. Second, vertical SnO2 nano-rods nucleate on the deposit by homoepitaxy. We demonstrate growth of vertically oriented 1-2 mu m long nano-rods with an average diameter of approximate to 20 nm. 2014 Elsevier B.V. All rights reserved.

  2. Investigation of Minimum Film boiling Phenomena on Fuel Rods Under Blowdown Cooling Conditions

    SciTech Connect

    Stephen M. Bajorek; Michael Gawron; Timothy Etzel; Lucas Peterson

    2003-06-30

    Blowdon cooling heat transfer is an important process that occurs early in a hypothetical large break loss-of-coolant accident (LOCA) in a pressurized water reactor. During blowdown, the flow through the hot assembly is a post-critical heat flux dispersed droplet flow. The heat transfer mechanisms that occur in blowdown cooling are complex and depend on droplet and heated surface interaction. In a safety analysis, it is of considerable importance to determine the thermal-hydraulic conditions leading to the minimum film boiling temperature, Tmin. A flow boiling rig for measurement of blowdown cooling heat transfer and quench phenomena on a nuclear fuel rod simulator was designed and constructed for operation at up to 12.4 MPa. The test section consisted of a concentric annulus, with a 9.5 mm OD nuclear fuel rod simulator at the center. The rod was contained within a 0.85 mm thick, 19 mm OD 316 stainless steel tube, forming the flow channel. Two types of rods were tested; one type was sheathed with Inconel 600 while the other was clad with Zircaloy-2. Water was injected into the test section at the top of the heated length through an injection header. This header was an annular sign that fit around the fuel rod simulator and within the stainless steel tube. Small spacers aligned the injection header and prevented contract with either the heater rod or the tube. A series of small diameter holes at the bottom of the header caused the formation of droplets that became entrained with the steam flow. The test section design was such that quench would take place on the rod, and not along the channel outer annulus.

  3. 49 CFR 236.793 - Rod, lock.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...APPLIANCES Definitions § 236.793 Rod, lock. A rod, attached to the front rod or lug of a switch, movable-point frog or derail, through which a locking plunger may extend when the switch points or derail are in the normal or reverse...

  4. 49 CFR 236.793 - Rod, lock.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...APPLIANCES Definitions § 236.793 Rod, lock. A rod, attached to the front rod or lug of a switch, movable-point frog or derail, through which a locking plunger may extend when the switch points or derail are in the normal or reverse...

  5. 49 CFR 236.793 - Rod, lock.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...APPLIANCES Definitions § 236.793 Rod, lock. A rod, attached to the front rod or lug of a switch, movable-point frog or derail, through which a locking plunger may extend when the switch points or derail are in the normal or reverse...

  6. 49 CFR 236.793 - Rod, lock.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...APPLIANCES Definitions § 236.793 Rod, lock. A rod, attached to the front rod or lug of a switch, movable-point frog or derail, through which a locking plunger may extend when the switch points or derail are in the normal or reverse...

  7. 49 CFR 236.793 - Rod, lock.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...APPLIANCES Definitions § 236.793 Rod, lock. A rod, attached to the front rod or lug of a switch, movable-point frog or derail, through which a locking plunger may extend when the switch points or derail are in the normal or reverse...

  8. The development of coated and non-coated wire explosions observed by X-ray backlighting

    NASA Astrophysics Data System (ADS)

    Zhu, Xinlei; Zhao, Shen; Zou, Xiaobing; Shi, Huantong; Luo, Haiyun; Wang, Xinxin

    2015-11-01

    Based on an X-pinch X-ray point source, the electrical explosion of coated and non-coated wires with 25 ?m diameter was backlit. The experiments were performed on the pulsed power device PPG-1 (500 kV/400 kA/100 ns) which was designed and constructed by the Department of Electrical Engineering of Tsinghua University. The source X-pinch was installed between the main output electrodes, while the object coated and non-coated wires were placed at the positions of the left and right current return rods, respectively. The backlighting images were recorded by X-ray films with high resolution and sensitivity. By a large number of backlighting experiments, the exploding physical images and expansion ratio curves of the coated and non-coated wires were obtained, and the results showed that coating can make the wire expand to be larger and more uniform.

  9. The role of oxide structure on copper wire to the rubber adhesion

    NASA Astrophysics Data System (ADS)

    Su, Yea-Yang; Shemenski, Robert M.

    2000-07-01

    Most metals have an oxide layer on the surface. However, the structure of the oxide varies with the matrix composition, and depends upon the environmental conditions. A bronze coating, nominal composition of 98.5% Cu and balance of Sn, is applied to steel wire for reinforcing pneumatic tire beads and to provide adhesion to rubber. This work studied the influence of copper oxides on the bronze coating on adhesion during vulcanization. To emphasize the oxide structures, electrolytic tough pitch (ETP) copper wire was used instead of the traditional bronze-coated tire bead wire. Experimental results confirmed the hypothesis that cuprous oxide (Cu 2O) could significantly improve bonding between copper wire and rubber, and demonstrated that the interaction between rubber and oxide layer on wire is an electrochemical reaction.

  10. Z-Pinch Wire-Electrode Contact Resistance Studies Using Weighted and Soft Metal Gasket Contacts*

    NASA Astrophysics Data System (ADS)

    Gomez, M. R.; Zier, J. C.; Thurtell, A. F.; French, D. M.; Gilgenbach, R. M.; Tang, W.; Lau, Y. Y.

    2008-11-01

    The contact made between z-pinch wires and electrodes has a significant effect on both the energy deposited in the wires and the uniformity of the expansion profile of the wires. We have shown that using soft metal gaskets can improve wire-electrode contact significantly over typical weighted contacts. Images of wire expansion profile and wire plasma emission will be presented for single and double wire shots on a 16 kA, 100 kV 4-stage Marx bank with 150 ns risetime. Bench resistance measurements for aluminum, stainless steel, and tungsten wires with diameters ranging from 7.5 um to 30 um will be presented. These measurements utilized both soft metal gasket contacts (gaskets include: indium, silver, aluminum, tin, and lead) and double-ended wire weight contacts (weights ranged from 0.4 g to 1.9 g). *This research was supported by U. S. DoE through Sandia National Laboratories award document numbers 240985, 768225, 790791 and 805234 to the University of Michigan. MRG supported by NNSA Fellowship and JCZ supported by NPSC Fellowship sponsored by Sandia National Labs.

  11. Dental Arch Wire

    NASA Technical Reports Server (NTRS)

    1979-01-01

    Straightening teeth is an arduous process requiring months, often years, of applying corrective pressure by means of arch wires-better known as brace-which may have to be changed several times in the course of treatment. A new method has been developed by Dr. George Andreasen, orthodontist and dental scientist at the University of Iowa. The key is a new type of arch wire material, called Nitinol, with exceptional elasticity which helps reduce the required number of brace changes. An alloy of nickel and titanium, Nitinol was originally developed for aerospace applications by the Naval Ordnance Laboratory, now the Naval Surface Weapons Laboratory, White Oaks, Maryland. NASA subsequently conducted additional research on the properties of Nitinol and on procedures for processing the metal.

  12. Wire insulation defect detector

    NASA Technical Reports Server (NTRS)

    Greulich, Owen R. (Inventor)

    2004-01-01

    Wiring defects are located by detecting a reflected signal that is developed when an arc occurs through the defect to a nearby ground. The time between the generation of the signal and the return of the reflected signal provides an indication of the distance of the arc (and therefore the defect) from the signal source. To ensure arcing, a signal is repeated at gradually increasing voltages while the wire being tested and a nearby ground are immersed in a conductive medium. In order to ensure that the arcing occurs at an identifiable time, the signal whose reflection is to be detected is always made to reach the highest potential yet seen by the system.

  13. [New wires and their force delivery--consequences for orthodontic therapy].

    PubMed

    Bantleon, H P; Droschl, H; Pfeiffer, K P

    1989-08-01

    Levelling arches made of stainless-steel wires were compared with nickel-titanium wires of the new generation which are distinguished by their shape memory, superelasticity and their excellent spring-back. The data received from a bending test have been analysed statistically and revealed a linear unloading curve of the twisted stainless-steel wires. The nickel-titanium wires, however, showed a clear deviation form the linearity with a curviform course. Besides the unusual unloading curve with a constant force mechanism in the middle range of deactivation the wires give off the same amount of force irrespective of the degree of activation (that is to say, regardless whether the level difference between the brackets amounts to 1 or to 4 mm). The diagram shows that the greater the activity between the brackets, the longer the period of superelasticity. Therefore the nickel-titanium wires are suited for large level differences or deflections. At a low activation rate the characteristic line takes a very steep and almost linear deactivation curve. In these cases twisted stainless steal wires should be preferred because of their lower load deflection rate and flexibility. PMID:2792985

  14. Wiring for aerospace applications

    NASA Technical Reports Server (NTRS)

    Christian, J. L., Jr.; Dickman, J. E.; Bercaw, R. W.; Myers, I. T.; Hammoud, A. N.; Stavnes, M.; Evans, J.

    1992-01-01

    In this paper, the authors summarize the current state of knowledge of arc propagation in aerospace power wiring and efforts by the National Aeronautics and Space Administration (NASA) towards the understanding of the arc tracking phenomena in space environments. Recommendations will be made for additional testing. A database of the performance of commonly used insulating materials will be developed to support the design of advanced high power missions, such as Space Station Freedom and Lunar/Mars Exploration.

  15. Plated wire memory subsystem

    NASA Technical Reports Server (NTRS)

    Reynolds, L.; Tweed, H.

    1972-01-01

    The work performed entailed the design, development, construction and testing of a 4000 word by 18 bit random access, NDRO plated wire memory for use in conjunction with a spacecraft imput/output unit and central processing unit. The primary design parameters, in order of importance, were high reliability, low power, volume and weight. A single memory unit, referred to as a qualification model, was delivered.

  16. Wire and column modeling 

    E-print Network

    Mandal, Esan

    2004-09-30

    casting turned off. A displacement map with positive displacement for opaque areas is applied on a copy of the model. A Maya feature, which converts a displacement map to its equivalent polygonal mesh, is used to get a 3D mesh of the displacement map... . . . . . . . . . . . . . . . . . . . . 25 III.1.1. Doo-Sabin modification in Wire modeling . . . . . . . 25 III.1.2. Rind modeling integration . . . . . . . . . . . . . . . 27 III.1.3. Dimension control of the 3D pipes . . . . . . . . . . 30 III.1.4. Self...

  17. Superconducting magnet wire

    DOEpatents

    Schuller, Ivan K. (Woodridge, IL); Ketterson, John B. (Evanston, IL); Banerjee, Indrajit (San Jose, CA)

    1986-01-01

    A superconducting tape or wire with an improved critical field is formed of alternating layers of a niobium-containing superconductor such as Nb, NbTi, Nb.sub.3 Sn or Nb.sub.3 Ge with a thickness in the range of about 0.5-1.5 times its coherence length, supported and separated by layers of copper with each copper layer having a thickness in the range of about 170-600 .ANG..

  18. Dual wire welding torch and method

    DOEpatents

    Diez, Fernando Martinez (Peoria, IL); Stump, Kevin S. (Sherman, IL); Ludewig, Howard W. (Groveland, IL); Kilty, Alan L. (Peoria, IL); Robinson, Matthew M. (Peoria, IL); Egland, Keith M. (Peoria, IL)

    2009-04-28

    A welding torch includes a nozzle with a first welding wire guide configured to orient a first welding wire in a first welding wire orientation, and a second welding wire guide configured to orient a second welding wire in a second welding wire orientation that is non-coplanar and divergent with respect to the first welding wire orientation. A method of welding includes moving a welding torch with respect to a workpiece joint to be welded. During moving the welding torch, a first welding wire is fed through a first welding wire guide defining a first welding wire orientation and a second welding wire is fed through a second welding wire guide defining a second welding wire orientation that is divergent and non-coplanar with respect to the first welding wire orientation.

  19. 75 FR 26199 - Stainless Steel Bar from India: Partial Rescission of Antidumping Duty Administrative Review

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-11

    ... Administrative Review, 75 FR 5037 (February 1, 2010). On February 24, 2010, Venus Wire Industries Pvt. Ltd... Administrative Reviews and Request for Revocation in Part, 75 FR 15679 (March 30, 2010). On April 7, 2010...''), for a review of Venus Wire Industries Pvt. Ltd., Facor Steels Ltd./Ferro Alloys Corporation,...

  20. Rod cluster having improved vane configuration

    SciTech Connect

    Shockling, L.A.; Francis, T.A.

    1989-09-05

    This patent describes a pressurized water reactor vessel, the vessel defining a predetermined axial direction of the flow of coolant therewithin and having plural spider assemblies supporting, for vertical movement within the vessel, respective clusters of rods in spaced, parallel axial relationship, parallel to the predetermined axial direction of coolant flow, and a rod guide for each spider assembly and respective cluster of rods. The rod guide having horizontally oriented support plates therewithin, each plate having an interior opening for accommodating axial movement therethrough of the spider assembly and respective cluster of rods. The opening defining plural radially extending channels and corresponding parallel interior wall surfaces of the support plate.

  1. Manually Operated Welding Wire Feeder

    NASA Technical Reports Server (NTRS)

    Rybicki, Daniel J. (Inventor)

    2001-01-01

    A manual welding wire feeder apparatus comprising a bendable elongate metal frame with a feed roller mounted at the center thereof for rotation about an axis transverse to the longitudinal axis of the frame. The frame ends are turned up as tabs and each provided with openings in alignment with each other and the mid-width center of the roller surface. The tab openings are sized to accommodate welding wire and each extends to a side edge of the tab, both opening on the same side of the frame, whereby welding wire can be side-loaded onto the frame. On the side of the frame, opposite the roller a lock ring handle is attached tangentially and is rotatable about the attachment point and an axis perpendicular to the frame. The device is grasped in the hand normally used to hold the wire. A finger is placed through the loop ring and the frame positioned across the palm and lower fingers. The thumb is positioned atop the wire so it can be moved from the back of the frame across the roller, and towards the front. In doing so, the wire is advanced at a steady rate in axial alignment with the tab openings and roller. To accommodate different wire diameters the frame is bendable about its center in the plane of the frame axis and wire so as to keep the wire in sufficient tension against the roller and to keep the wire fixed when the frame is tilted and thumb pressure released.

  2. High strength cored wire weld metal hydrogen content, and weld metal cracking

    SciTech Connect

    Hannerz, N.E.; Xu, L.C.

    1993-12-31

    Cored wires for high strength steel were tested for weld metal cracking with the G-BOP (Gap Bead on Plate) test. In all, 29 wires were gathered to yield rather a broad mixture of types and strength levels. Ten rutile, twelve basic flux cored wires, and seven metal cored wires were tested. G-BOP testing was performed at ambient but also at higher temperatures so that the preheating temperature could be evaluated. Gas shielding was used, wire diameter being 1.2 and 1.6 mm. Strength class of the wires varied from AWS E70 up to AWS E110. Altogether some 180 welds were studied for weld cracking, cracked bead area ranging from 2 to 100%. The 10% cracking preheat temperature, i.e., the temperature that might be recommended for practical welding ranged from ambient up to 150 C, at an arc energy of 1 kJ/mm. Distinct correlations were found between hydrogen content, weld metal carbon equivalent, heat input and tendency for cracking. Thus, from a weld metal cracking point of view, preheat and interpass temperatures must be considered important when going to low E{sub w} steels, like spray cooled TMCP steels, QT steels and the like. Hydrogen content varied from 1.45 ml/100 g of as deposited weld metal up to 14.8 ml/100 g, rutile wires yielding the highest hydrogen content. Weld metals within the strength classes AWS E90 to AWS E110 generally have low hydrogen content and basic flux formulation.

  3. Exploiting rod technology. Final report

    SciTech Connect

    1990-06-01

    ROD development was proceeding apace until recent budgetary decisions caused funding support for ROD development to be drastically reduced. The funding which was originally provided by DARPA and the Balanced Technology Initiative (BTI) Office has been cut back to zero from $800K. To determine the aeroballistic coefficients of a candidate dart, ARDEC is currently supporting development out of its own 6.2 funds at about $100K. ARDEC has made slow progress toward achieving this end because of failures in the original dart during testing. It appears that the next dart design to be tested will diverge from the original concept visualized by DARPA and Science and Technology Associates (STA). STA, the design engineer, takes exception to these changes on the basis of inappropriate test conditions and insufficient testing. At this time, the full resolution of this issue will be difficult because of the current management structure, which separates the developer (ARDEC) from the designer (STA).

  4. Metering Wheel-Wire Track Wire Boom Deployment Mechanism

    NASA Technical Reports Server (NTRS)

    Granoff, Mark S.

    2014-01-01

    The NASA MMS Spin Plane Double Probe (SDP) Deployer utilizes a helical path, rotating Metering Wheel and a spring loaded Wire "Holding" Track to pay out a "fixed end" 57 meter x 1.5 mm diameter Wire Boom stored between concentric storage cylinders. Unlike rotating spool type storage devices, the storage cylinders remain stationary, and the boom wire is uncoiled along the length of the cylinder via the rotation of the Metering Wheel. This uncoiling action avoids the need for slip-ring contacts since the ends of the wire can remain stationary. Conventional fixed electrical connectors (Micro-D type) are used to terminate to operational electronics.

  5. The Expected but Well-Hidden EMF in the Jumping Wire Experiment and its Unexpected Role

    NASA Astrophysics Data System (ADS)

    Donoso, G.; Ladera, C. L.

    2015-12-01

    As presented in physics textbooks, as well as in a few papers, the typical example of an induced motional electromotive force ?mot = Blv consists of a conductive rod of length l frictionlessly sliding with speed v along parallel wires within an orthogonal and constant uniform magnetic field of magnitude B. End-of-chapter problems, variants of that sliding rod, are additionally posed in those textbooks. The horizontal jumping wire of length l carrying a current i that is tossed upward by a magnetic force, in a transverse horizontal magnetic field B, is an important variant, as evidenced by its popularity as a demonstration experiment (with numerous videos and blogs posted on the web). A simplistic account of the wire-jump experiment is often given exclusively in terms of the well-known magnetic force F = i l × B that propels the wire upward. The jumping wire is an eye-catching demonstration for both students and the public, and it indeed deserves to be analyzed in greater detail, since as shown below it hides fundamental and interesting physics, certainly much more than what the eye catches.

  6. Tribe kills fuel rod proposal

    SciTech Connect

    1995-02-13

    This article is a review of nuclear utilities` efforts to find a repository of spent fuel rods. The rejection by the Mescalero Apaches of plans to build a waste repository on tribal lands has left a number of utilities scrambling to find interim solutions. Prairie Island will have to close before the end of the year unless a solution is found, and the Hope Creek/Salem units, exhausting there storage capacity within ten years, are considering dry-cask storage.

  7. Rolling contact fatigue of surface modified 440C using a 'Ge-Polymet' type disc rod test rig

    NASA Technical Reports Server (NTRS)

    Thom, Robert L.

    1989-01-01

    Through hardened 440 C martensitic stainless steel test specimens were surface modified and tested for changes in rolling contact fatigue using a disc on rod test rig. The surface modifications consisted of nitrogen, boron, titanium, chromium, tantalum, carbon, or molybdenum ion implantation at various ion fluences and energies. Tests were also performed on specimens reactively sputtered with titanium nitride.

  8. Remote Gamma Scanning System for Characterization of BWR and PWR Fuel Rod Sections

    SciTech Connect

    Crowell, Shannon L.; Alzheimer, James M.

    2011-08-08

    Sometimes challenges with the design and deployment of automated equipment in remote environments deals more with the constraints imposed by the remote environment than it does with the details of the automation. This paper discusses the development of a scanning system used to provide gamma radiation profiles of irradiated fuel rod segments. The system needed the capability to provide axial scans of cut segments of BWR and PWR fuel rods. The scanning location is A-Cell at the Radiochemical Processing Laboratory (RPL) at the Hanford site in Washington State. The criteria for the scanning equipment included axial scanning increments of a tenth of an inch or less, ability to scan fuel rods with diameters ranging from 3/8 inch to 5/8 inch in diameter, and fuel rod segments up to seven feet in length. Constraints imposed by the environment included having the gamma detector and operator controls on the outside of the hot cell and the scanning hardware on the inside of the hot cell. This entailed getting a narrow, collimated beam of radiation from the fuel rod to the detector on the outside of the hot cell while minimizing the radiation exposure caused by openings for the wires and cables traversing the hot cell walls. Setup and operation of all of the in-cell hardware needed to accommodate limited access ports and use of hot cell manipulators. The radiation levels inside the cell also imposed constraints on the materials used.

  9. Diamond Wire Saw for Precision Machining of Laser Target Components

    SciTech Connect

    Bono, M J; Bennett, D W

    2005-08-08

    The fabrication of precision laser targets requires a wide variety of specialized mesoscale manufacturing techniques. The diamond wire saw developed in this study provides the capability to precisely section meso-scale workpieces mounted on the assembly stations used by the Target Fabrication Group. This new capability greatly simplifies the fabrication of many types of targets and reduces the time and cost required to build the targets. A variety of materials are used to fabricate targets, including metals, plastics with custom designed chemical formulas, and aerogels of various densities. The materials are usually provided in the form of small pieces or cast rods that must be machined to the required shape. Many of these materials, such as metals and some plastics, can be trimmed using a parting tool on a diamond turning machine. However, other materials, such as aerogels and brittle materials, cannot be adequately cut with a parting tool. In addition, the geometry of the parts often requires that the workpieces be held in a special assembly station, which excludes the use of a parting tool. In the past, these materials were sectioned using a small, handheld coping saw that used a diamond-impregnated wire as a blade. This miniature coping saw was effective, but it required several hours to cut through certain materials. Furthermore, the saw was guided by hand and often caused significant damage to fragile aerogels. To solve these problems, the diamond wire saw shown in Figure 1 was developed. The diamond wire saw is designed to machine through materials that are mounted in the Target Fabrication Group's benchtop assembly stations. These assembly stations are the primary means of aligning and assembling target components, and there is often a need to machine materials while they are mounted in the assembly stations. Unfortunately, commercially available saws are designed for very different applications and are far too large to be used with the assembly stations. Therefore, a custom diamond wire saw was designed and constructed. The diamond wire saw cuts through workpieces using a continuous loop of diamond-impregnated wire of length 840 mm. The wire loop runs around several idler pulleys and is driven by a simple geared DC motor that rotates at 17 rpm. The linear speed of the wire is 107 inches/minute. The saw is oriented at an angle of 20{sup o} from horizontal, so the operator can view the wire through the cutout at the front end of the saw. When looking through a microscope or camera with a horizontal line of sight, the operator can clearly see the wire as it cuts through the workpiece, as shown in the right side of Figure 1. The saw is mounted on a two-axis stage that allows the operator to align the wire with the workpiece. To cut through the workpiece, the operator drives the wire through the workpiece by turning the feed micrometer. An image of the interior of the diamond wire saw appears in Figure 2. This picture was taken after removing the protective cover plate from the saw.

  10. Coiling rods onto moving substrates

    NASA Astrophysics Data System (ADS)

    Jawed, Mohammad; da, Fang; Grinspun, Eitan; Reis, Pedro

    2014-03-01

    We present results on the nonlinear patterns obtained when a thin elastic rod is deployed onto a moving substrate. Our experiments comprise an injector that deposits an elastomeric rod onto a conveyor belt, where it coils in a variety of nonlinear patterns, depending on the control parameters. The portion of the rod that is suspended between the injector and the point of contact with the belt can exhibit strong geometric nonlinearities that are a challenge for traditional analytical and numerical methods. We tackle this challenge by coupling our precision model experiments with cutting-edge simulation tools ported from the computer graphics community. By systematically exploring parameter space, we map out the basins of stability of the various nonlinear coiling patterns, which are then rationalized using a detailed energy balance. We give particular emphasis to the sinusoidal patterns that emerge from a straight-to-meandering instability that we find to be consistent with a Hopf bifurcation. Closed-form solutions are derived to describe the amplitude and wavelength of the meandering patterns. The excellent agreement between experiments, simulations and theory conveys the predictive ability of our tools to be used, upon scaling, in the original engineering applications that motivated this study: serpentines created from the coiling of carbon nanotubes (at the micron-scale) and the laying down of transoceanic undersea cables (at the kilometer-scale).

  11. Review of wire chamber aging

    SciTech Connect

    Va'Vra, J.

    1986-02-01

    This paper makes an overview of the wire chamber aging problems as a function of various chamber design parameters. It emphasizes the chemistry point of view and many examples are drawn from the plasma chemistry field as a guidance for a possible effort in the wire chamber field. The paper emphasizes the necessity of variable tuning, the importance of purity of the wire chamber environment, as well as it provides a practical list of presently known recommendations. In addition, several models of the wire chamber aging are qualitatively discussed. The paper is based on a summary talk given at the Wire Chamber Aging Workshop held at LBL, Berkeley on January 16-17, 1986. Presented also at Wire Chamber Conference, Vienna, February 25-28, 1986. 74 refs., 18 figs., 11 tabs.

  12. Monte Carlo estimation of the dose and heating of cobalt adjuster rods irradiated in the CANDU 6 reactor core.

    PubMed

    Gugiu, Daniela; Dumitrache, Ion

    2005-01-01

    The present work is a part of a more complex project related to the replacement of the original stainless steel adjuster rods with cobalt assemblies in the CANDU 6 reactor core. The 60Co produced by 59Co irradiation could be used extensively in medicine and industry. The paper will mainly describe some of the reactor physics and safety requirements that must be carried into practice for the Co adjuster rods. The computations related to the neutronic equivalence of the stainless steel adjusters with the Co adjuster assemblies, as well as the estimations of the activity and heating of the irradiated cobalt rods, are performed using the Monte Carlo codes MCNP5 and MONTEBURNS 2.1. The activity values are used to evaluate the dose at the surface of the device designed to transport the cobalt adjusters. PMID:16604599

  13. Radiation energetics of ICF-relevant wire-array Z pinches.

    PubMed

    Sinars, D B; Lemke, R W; Cuneo, M E; Lebedev, S V; Waisman, E M; Stygar, W A; Jones, B; Jones, M C; Yu, E P; Porter, J L; Wenger, D F

    2008-04-11

    Short-implosion-time 20-mm diameter, 300-wire tungsten arrays maintain high peak x-ray powers despite a reduction in peak current from 19 to 13 MA. The main radiation pulse on tests with a 1-mm on-axis rod may be explained by the observable j x B work done during the implosion, but bare-axis tests require sub-mm convergence of the magnetic field not seen except perhaps in >1 keV emission. The data include the first measurement of the imploding mass density profile of a wire-array Z pinch that further constrains simulation models. PMID:18518042

  14. Thermal Conductivity of Industrial Nb3Sn Wires Fabricated by Various Techniques

    E-print Network

    Bonura, Marco

    2012-01-01

    We have developed a new experimental setup specifically designed for measuring thermal conductivity on technical superconductors in the range of temperatures from 3 to 330 K in magnetic fields up to 21 T. Three Nb3Sn wires, produced by the powder in tube technique, the bronze route and the internal tin restacked rod process, respectively, have been investigated. We show that, due to the complexity of the architecture of these wires, direct measurement of thermal conductivity is required for a correct estimation of thermal stability in superconducting magnets.

  15. Application of EM stress sensors in large steel cables

    NASA Astrophysics Data System (ADS)

    Wang, Guodun; Wang, Ming L.; Zhao, Yang; Chen, Yong; Sun, Bingnan

    2005-05-01

    In this paper, the calibration and workability of magnetoelastic (ME or EM) stress sensors for large steel cables used in Qiangjiang 4th bridge in China are discussed. As an engineering application of magnetoelasticity, EM sensors make non-contact stress monitoring possible for steel hangers and post-tensioned cables on suspension and cable-stayed bridges, and other ferromagnetic structures. By quantifying the correlation of tension with magnetic properties represented by the relative permeability of the steel structure itself, the EM sensor inspects the loading level of the steel structure. The tension dependence of the relative permeability and the temperature influence was calibrated. The results revealed that the magnetoelasticity of the multi-wire hangers is consistent with one another, while the post-tensioned cables are similar to single wires. Cable stress monitoring on Qiangjiang (Qj) 4th bridge demonstrated the reliability of the EM sensors in safety evaluation of bridge.

  16. 49 CFR 236.74 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... underground wire. 236.74 Section 236.74 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION RULES, STANDARDS, AND INSTRUCTIONS GOVERNING... wire; splice in underground wire. Insulated wire shall be protected from mechanical injury....

  17. 49 CFR 236.74 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... underground wire. 236.74 Section 236.74 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION RULES, STANDARDS, AND INSTRUCTIONS GOVERNING... wire; splice in underground wire. Insulated wire shall be protected from mechanical injury....

  18. 49 CFR 234.241 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... underground wire. 234.241 Section 234.241 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION GRADE CROSSING SIGNAL SYSTEM SAFETY... of insulated wire; splice in underground wire. Insulated wire shall be protected from...

  19. 49 CFR 234.241 - Protection of insulated wire; splice in underground wire.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... underground wire. 234.241 Section 234.241 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION GRADE CROSSING SIGNAL SYSTEM SAFETY... of insulated wire; splice in underground wire. Insulated wire shall be protected from...

  20. Transient current pulses in rocket-extended wires used to trigger lightning

    NASA Astrophysics Data System (ADS)

    Biagi, C. J.; Uman, M. A.; Hill, J. D.; Rakov, V. A.; Jordan, D. M.

    2012-04-01

    We analyze current, electric field, and optical signatures of the sudden electrical breakdown processes (precursors) that occur at the top of the upward extending, grounded, Kevlar-covered copper wires used to artificially trigger lightning. For one launch, before the sustained upward positive leader initiated, we estimate that up to 10,000 precursors occurred (one every few hundred microseconds) with peak currents from 1 to more than 100 A. Luminosity at the wire tip was observed for 339 of 410 precursors examined in detail and, in seven cases, discharge channels developed to lengths of 3 to 8 m over times of several hundred microseconds. The measured propagation speeds of current pulses on the triggering wires were less than the speed of light, and decreased from about 2.8 × 108 m s-1 to about 2.3 × 108 m s-1with increasing wire-top heights from about 80 m to about 340 m. The triggering wire and its grounding system are modeled as uniform transmission lines with model predictions that are consistent with the measured wire-base precursor current signatures. The modeling shows that (1) the characteristic impedance of the triggering wire, the ratio of the propagating precursor voltage pulse to its associated current pulse, is between 600 and 800 ?; (2) the 25 m ground rod grounding impedance for the peak precursor current is about 100 ?, while the DC grounding resistance is 20 ?; and (3) the current reflection coefficient at ground for peak precursor current is ˜0.9.

  1. 49 CFR 234.231 - Fouling wires.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Fouling wires. 234.231 Section 234.231..., Inspection, and Testing Maintenance Standards § 234.231 Fouling wires. Each set of fouling wires in a highway... single duplex wire with single plug acting as fouling wires is prohibited. Existing installations...

  2. Plated wire memory subsystem

    NASA Technical Reports Server (NTRS)

    Carpenter, K. H.

    1974-01-01

    The design, construction, and test history of a 4096 word by 18 bit random access NDRO Plated Wire Memory for use in conjunction with a spacecraft input/output and central processing unit is reported. A technical and functional description is given along with diagrams illustrating layout and systems operation. Test data is shown on the procedures and results of system level and memory stack testing, and hybrid circuit screening. A comparison of the most significant physical and performance characteristics of the memory unit versus the specified requirements is also included.

  3. Development of narrow gap welding technology for extremely thick steel

    NASA Astrophysics Data System (ADS)

    Imai, K.; Saito, T.; Okumura, M.

    In the field of extremely thick steel, various narrow gap welding methods were developed on the basis of former welding methods and are used in practice. It is important to develop and improve automatic narrow gap welding, J edge preparation by gas cutting, the prevention of welding defects, wires for narrow gap welding and so on in order to expand the scope of application of the method. Narrow gap welding technologies are described, based on new concepts developed by Nippon Steel Corporation.

  4. Improved superconducting magnet wire

    DOEpatents

    Schuller, I.K.; Ketterson, J.B.

    1983-08-16

    This invention is directed to a superconducting tape or wire composed of alternating layers of copper and a niobium-containing superconductor such as niobium of NbTi, Nb/sub 3/Sn or Nb/sub 3/Ge. In general, each layer of the niobium-containing superconductor has a thickness in the range of about 0.05 to 1.5 times its coherence length (which for Nb/sub 3/Si is 41 A) with each copper layer having a thickness in the range of about 170 to 600 A. With the use of very thin layers of the niobium composition having a thickness within the desired range, the critical field (H/sub c/) may be increased by factors of 2 to 4. Also, the thin layers of the superconductor permit the resulting tape or wire to exhibit suitable ductility for winding on a magnet core. These compositions are also characterized by relatively high values of critical temperature and therefore will exhibit a combination of useful properties as superconductors.

  5. Reactor control rod timing system. [LMFBR

    DOEpatents

    Wu, P.T.K.

    1980-03-18

    A fluid driven jet-edge whistle timing system is described for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

  6. Surface topography, hardness, and frictional properties of GFRP for esthetic orthodontic wires.

    PubMed

    Inami, Toshihiro; Tanimoto, Yasuhiro; Yamaguchi, Masaru; Shibata, Yo; Nishiyama, Norihiro; Kasai, Kazutaka

    2016-01-01

    In our previous study, glass-fiber-reinforced plastics (GFRPs) made from polycarbonate and glass fiber for esthetic orthodontic wires were prepared by using pultrusion. The purpose of the present study was to investigate the surface topography, hardness, and frictional properties of GFRPs. To investigate how fiber diameter affects surface properties, GFRP round wires with a diameter of 0.45 mm (0.018 in.) were prepared incorporating either 13 ?m (GFRP-13) or 7 ?m (GFRP-7) glass fibers. As controls, stainless steel (SS), cobalt-chromium-nickel alloy, ?-titanium (?-Ti) alloy, and nickel-titanium (Ni?Ti) alloy were also evaluated. Under scanning electron microscopy and scanning probe microscopy, the ?-Ti samples exhibited greater surface roughness than the other metallic wires and the GFRP wires. The dynamic hardness and elastic modulus of GFRP wires obtained by the dynamic micro-indentation method were much lower than those of metallic wires (p?wires and Ni?Ti wire were nearly half as low as those of SS, Co?Cr, and ?-Ti wires. In conclusion, there was no significant difference in surface properties between GFRP-13 and GFRP-7; presumably because both share the same polycarbonate matrix. We expect that GFRP wires will deliver superior sliding mechanics with low frictional resistance between the wire and bracket during orthodontic treatment. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 104B: 88-95, 2016. PMID:25631358

  7. Determination of the initial exothermic reaction of shredded tyres with wire content.

    PubMed

    Sellasie, Kassahun G; Moo-Young, Horace K; Lloyd, Thomas

    2004-10-01

    This paper presents the cause of exothermic reactions in shredded tyre with exposed wire content in shredded tyre piles. Data indicate that the oxidation of exposed steel wires is the exothermic reaction in shredded tyre embankments. This would lead to spontaneous combustion. Reaction of the steel with the sulphur or the carbon black appears not to be the source of the exothermic. Laboratory tests have been conducted to determine the heat transfer properties of the materials that compose tyres (i.e., tyre rubber and wires) by using a hot-plate apparatus. In addition, one-dimensional heat conduction experiments were conducted to compare the flow of heat through the materials while varying the physical and environmental conditions. The physical conditions were the size of tyre shred, water content, and wire contents. An exothermic reaction occurred when exposed wire was present but not when it was absent. A one-dimensional heat transfer equation was developed, and parametric studies were conducted to verify the laboratory model. Exothermic reaction was found to increase linearly with temperature, size and shape of the shredded tyres, density, amount of wire in shredded tyres, and water content. PMID:15560440

  8. Wire and Packing Tape Sandwiches

    ERIC Educational Resources Information Center

    Rabinowitz, Sandy

    2009-01-01

    In this article, the author describes how students can combine craft wire with clear packing tape to create a two-dimensional design that can be bent and twisted to create a three-dimensional form. Students sandwich wire designs between two layers of tape. (Contains 1 online resource.)

  9. WIRE Mishap Investigation Board Report

    E-print Network

    Rhoads, James

    ......................................... 41 F. Small Explorer WIRE Failure Investigation Report, Richard B. Katz, Goddard Space Flight Center Correlation Kimberly Brown, Dave Everett, Goddard Space Flight Center Impact to the Wide-Field Infrared Explorer (WIRE)............ 230 I. Analysis of US Space Command Debris

  10. The Current in a Wire

    ERIC Educational Resources Information Center

    Thompson, Keith

    2009-01-01

    This little problem arose because I was frustrated with the standard electromagnetism texts, which show the magnetic field due to a current-bearing wire outside the wire [proportional to] 1/r and inside [proportional to] r. However, they never point out that the moving electrons must be influenced by the magnetic field created by the other moving…

  11. Automatic safety rod for reactors. [LMFBR

    DOEpatents

    Germer, J.H.

    1982-03-23

    An automatic safety rod for a nuclear reactor containing neutron absorbing material and designed to be inserted into a reactor core after a loss-of-flow. Actuation is based upon either a sudden decrease in core pressure drop or the pressure drop decreases below a predetermined minimum value. The automatic control rod includes a pressure regulating device whereby a controlled decrease in operating pressure due to reduced coolant flow does not cause the rod to drop into the core.

  12. 46 CFR 111.60-11 - Wire.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 CFR 110.10-1), or equivalent standard. (d) Switchboard wire must meet subpart 111.30 of this part... 46 Shipping 4 2011-10-01 2011-10-01 false Wire. 111.60-11 Section 111.60-11 Shipping COAST GUARD... Wiring Materials and Methods § 111.60-11 Wire. (a) Wire must be in an enclosure. (b) Wire must...

  13. 46 CFR 111.60-11 - Wire.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 CFR 110.10-1), or equivalent standard. (d) Switchboard wire must meet subpart 111.30 of this part... 46 Shipping 4 2010-10-01 2010-10-01 false Wire. 111.60-11 Section 111.60-11 Shipping COAST GUARD... Wiring Materials and Methods § 111.60-11 Wire. (a) Wire must be in an enclosure. (b) Wire must...

  14. Internal wire guide for GTAW welding

    NASA Technical Reports Server (NTRS)

    Morgan, Gene E. (inventor); Dyer, Gerald E. (inventor)

    1989-01-01

    A welding torch for gas tungsten arc welding apparatus has a filler metal wire guide positioned within the torch, and within the shielding gas nozzle. The wire guide is adjacent to the tungsten electrode and has a ceramic liner through which the wire is fed. This reduces the size of the torch and eliminates the outside clearance problems that exit with external wire guides. Additionally, since the wire is always within the shielding gas, oxidizing of the wire is eliminated.

  15. Electrode carrying wire for GTAW welding

    NASA Technical Reports Server (NTRS)

    Morgan, Gene E. (inventor); Dyer, Gerald E. (inventor)

    1990-01-01

    A welding torch for gas tungsten arc welding apparatus has a hollow tungsten electrode including a ceramic liner and forms the filler metal wire guide. The wire is fed through the tungsten electrode thereby reducing the size of the torch to eliminate clearance problems which exist with external wire guides. Since the wire is preheated from the tungsten more wire may be fed into the weld puddle, and the wire will not oxidize because it is always within the shielding gas.

  16. High-speed photography and stress-gauge studies of the impact and penetration of plates by rods

    NASA Astrophysics Data System (ADS)

    Bourne, Neil K.; Forde, Lucy C.; Field, John E.

    1997-05-01

    There has been much study of the penetration of semi- infinite and finite thickness targets by long rods at normal incidence. The effects of oblique impact have received relatively little attention and techniques of modeling are thus less developed. It was decided to conduct an experimental investigation of the effects of rod penetration at various angles of impact at zero yaw. The rods were mounted in a reverse ballistic configuration so that their response could be quantified through the impact. Scale copper, mild steel and tungsten alloy rods with hemispherical ends were suspended at the end of the barrel of a 50 mm gas gun at the University of Cambridge. The rods were instrumented with embedded manganin piezoresistive stress gauges. Annealed aluminum, duraluminum and rolled homogeneous armor plates of varying thickness and obliquity were fired at the rods at one of two velocities. The impacts were backlit and photographed with an Ultranac FS501 programmable high-speed camera operated in framing mode. The gauges were monitored using a 2 GH s-1 storage oscilloscope. Rods and plates were recovered after the impact for microstructural examination. Additionally, penetration of borosilicate glass targets was investigated using high-speed photography and a localized Xe flash source and schlieren optics. Additional data was obtained by the use of flash X-ray. Waves and damage were visualized in the glass. High-speed sequences and gauge records are presented showing the mechanisms of penetration and exit seen during impact.

  17. Welding wire pressure sensor assembly

    NASA Technical Reports Server (NTRS)

    Morris, Timothy B. (inventor); Milly, Peter F., Sr. (inventor); White, J. Kevin (inventor)

    1994-01-01

    The present invention relates to a device which is used to monitor the position of a filler wire relative to a base material being welded as the filler wire is added to a welding pool. The device is applicable to automated welding systems wherein nonconsumable electrode arc welding processes are utilized in conjunction with a filler wire which is added to a weld pool created by the electrode arc. The invention senses pressure deviations from a predetermined pressure between the filler wire and the base material, and provides electrical signals responsive to the deviations for actuating control mechanisms in an automatic welding apparatus so as to minimize the pressure deviation and to prevent disengagement of the contact between the filler wire and the base material.

  18. NASA SpaceWire Status

    NASA Technical Reports Server (NTRS)

    Rakow, Glenn Parker

    2005-01-01

    Three projects are developing SpaceWire upper layer protocols: JWST, LRO, GOES-R. JWST protocol development was complete before Protocol ID field was introduced to the standard. Commanding is done by using CCD5 packets tunneled through SpaceWire. Science Data packet is optimized for implementation specific requirements. Lunar Reconnaissance Orbiter (LRD) investigated using the SnP Rmap protocol but chose to use CCSDS tunneled through SpaceWire. GOES-R is using CCDS tunneled through SpaceWire with project developed Reliable Delivery protocol. Reliable Delivery protocol may be used to replace MIL-STD-1553 for other mission. CCDS is the native format for the software bus for many NASA GSFC missions and therefore it is a natural packet format to tunnel through SpaceWire.

  19. Ultrasonic profilometry system for control rod wear

    SciTech Connect

    Hancock, J.W.; Kelly, M.J.; Latham, W.M.; Stinnett, C.E.

    1991-11-19

    This patent describes an apparatus for scanning the outer profile of control rods. It comprises a module support positioned at a fixed location with respect to a control rod to be scanned, a transducer drive tube mounted for rotation about the axis of a control rod for receiving a control rod therein, a transducer holder connected to the transducer drive tube carrying ultrasonic transducer means facing an interior of the transducer drive tube, for sending an ultrasonic beam to and receiving ultrasonic echo energy from the surface of the control rod, the holder having at least one part for carrying the ultrasonic transducer means which is mounted for limited radial movement with respect to the transducer drive tube; rotation means, mounted to the module support and engaged with the transducer drive tube for rotating the transducer drive tube and the ultrasonic transducer means around the axis of the control rod; and translation means for translating the control rod with respect to the ultrasonic transducer means, in a direction parallel to the axis of the control rod, for scanning the surface of the control rod along a helical path.

  20. Temperature actuated automatic safety rod release

    DOEpatents

    Hutter, E.; Pardini, J.A.; Walker, D.E.

    1984-03-13

    A temperature-actuated apparatus is disclosed for releasably supporting a safety rod in a nuclear reactor, comprising a safety rod upper adapter having a retention means, a drive shaft which houses the upper adapter, and a bimetallic means supported within the drive shaft and having at least one ledge which engages a retention means of the safety rod upper adapter. A pre-determined increase in temperature causes the bimetallic means to deform so that the ledge disengages from the retention means, whereby the bimetallic means releases the safety rod into the core of the reactor.

  1. Temperature actuated automatic safety rod release

    DOEpatents

    Hutter, Ernest (Wilmette, IL); Pardini, John A. (Brookfield, IL); Walker, David E. (Naperville, IL)

    1987-01-01

    A temperature-actuated apparatus is disclosed for releasably supporting a safety rod in a nuclear reactor, comprising a safety rod upper adapter having a retention means, a drive shaft which houses the upper adapter, and a bimetallic means supported within the drive shaft and having at least one ledge which engages a retention means of the safety rod upper adapter. A pre-determined increase in temperature causes the bimetallic means to deform so that the ledge disengages from the retention means, whereby the bimetallic means releases the safety rod into the core of the reactor.

  2. Hot Cutting of Real-Time Cast-Forged GS Ductile Iron for Automotive Rods

    NASA Astrophysics Data System (ADS)

    Fouilland, Laurence; Mansori, Mohamed El

    2011-01-01

    In the global economy context, automotive industry suppliers have to keep a constant advance on products design and manufacturing process. Concerning automotive rods, the substitution of forged steel by spherical graphite iron (SG iron) with high mechanical properties constitutes a valid economic alternative. Such rods are produced using a complex coupled process: casting and forging followed by an austempered heat treatment. The forging operation is capable to shape the cast rod which introduces hot deformation to increase mechanical properties of net-shape SG iron rod. However, the intermediate re-heating between casting and forging must be avoided to keep competitive manufacturing costs. A major concern of this new process development is the cracks produced in rod's surface which are consecutive to hot spruing involved after casting operations. This issue is addressed in this paper which discusses the physical mechanisms involved in the hot ductile damage of SG iron. Hot cutting tests were performed to simulate the spruing operation which shows the close interactions between microstructure, machining parameters and resulting damages. The damage mechanisms in terms of crack initiation and its growth have been studied with respect to the constituent phases (austenite+graphite nodules), the cut surface morphology and the hot cutting performance.

  3. Taguchi Method Implementation in Taper Motion Wire EDM Process Optimization

    NASA Astrophysics Data System (ADS)

    Martowibowo, S. Y.; Wahyudi, A.

    2012-10-01

    Wire electrical discharge machining (Wire EDM) is a non-conventional metal removal process as well as one of the best manufacturing processes suitable for producing jigs, fixtures, and dies. Among others, the machine is able to cut a workpiece having oblique and taper form. The objective of this paper is to optimize the input parameters of Wire EDM machine, such as no load voltage, capacitor, on-time, off-time, and servo voltage, for machining medium carbon steel ASSAB 760. The Taguchi design of experiments, the signal-to-noise ratio, and analysis of variance are employed to analyze the effects of the input parameters by adopting L18 Taguchi orthogonal array (OA) to conduct experiments using brass wire electrode of 0.2 mm in diameter. In order to achieve the maximum material removal rate (MRR) or the minimum surface roughness (SR), six controllable factors, i.e., the parameters of each at three levels are applied for determining the optimal combination of factors and levels. The results reveal that the MRR and the SR are greatly influenced by the on-time and the taper angle, respectively. Experimental results affirm the effectiveness of the method, and also prove that the Taguchi method is suitable to solving the stated problem within minimum number of experiments as compared to that of a full factorial design.

  4. Sintered wire cathode

    DOEpatents

    Falce, Louis R. (San Jose, CA); Ives, R. Lawrence (Saratoga, CA)

    2009-06-09

    A porous cathode structure is fabricated from a plurality of wires which are placed in proximity to each other in elevated temperature and pressure for a sintering time. The sintering process produces the porous cathode structure which may be divided into a plurality of individual porous cathodes, one of which may be placed into a dispenser cathode support which includes a cavity for containing a work function reduction material such as BaO, CaO, and Al.sub.2O.sub.3. The work function reduction material migrates through the pores of the porous cathode from a work replenishment surface adjacent to the cavity of the dispenser cathode support to an emitting cathode surface, thereby providing a dispenser cathode which has a uniform work function and therefore a uniform electron emission.

  5. Rod Control Assemblies Wear Mechanisms

    SciTech Connect

    Kaczorowski, Damien; Georges, Jean-Mary; Bec, Sandrine; Vannes, Andre-Bernard; Tonck, Andre; Vernot, Jean-Philippe

    2002-07-01

    In nuclear power plants, slender tubular components are subjected to vibrations in a PHTW environment. As a result, the two contacting surfaces, tubes and their guides undergo impact at low contact pressures. The components are usually made of stainless steel and it was found that the influence of the PHTW, combined with other actions (such as corrosion, erosion, squeeze film effect, third body effect and cavitation) leads to a particular wear of the material. Therefore, this paper aims to show that the colloidal oxides, formed on the steel surfaces in PHTW, play a principal role in the wear of the surfaces. Actually, due to the specific kinematic conditions of the contact, the flow of compacted oxides abrades the surfaces. (authors)

  6. [Materials science studies on the soldering of different orthodontic wires].

    PubMed

    Hannemann, M; Minarski, P; Lugscheider, E; Diedrich, P

    1989-12-01

    In orthodontic technique both soldering and welding are standard methods for the application of auxiliaries and for the modification of force systems by joining wires of different cross-sections. Two cobalt-chromium alloys (Blue Elgiloy, Crozat) and an austenitic stainless steel alloy (Remanium) were soldered by an electrochemically generated hydrogen-oxygen flame forming an overlapped joint design. For characterization of the soldered joint testing procedures included microhardness tests, metallographic examination, tension-shear tests and surface analysis of the fractured joints by scanning electron microscopy. For any given soldering technique with an overlapped joint design the correct joint length is determined by the ratio t/s = 3 (t = overlapped length; s = diameter of the smaller wire). PMID:2575567

  7. Mechanical properties of orthodontic wires made of super engineering plastic.

    PubMed

    Maekawa, Minami; Kanno, Zuisei; Wada, Takahiro; Hongo, Toshio; Doi, Hisashi; Hanawa, Takao; Ono, Takashi; Uo, Motohiro

    2015-01-01

    Most orthodontic equipment is fabricated from alloys such as stainless steel, Co-Cr and Ni-Ti because of their excellent elastic properties. In recent years, increasing esthetic demands, metal allergy and interference of metals with magnetic resonance imaging have driven the development of non-metallic orthodontic materials. In this study, we assessed the feasibility of using three super engineering plastics (PEEK, PES and PVDF) as orthodontic wires. PES and PVDF demonstrated excellent esthetics, although PEEK showed the highest bending strength and creep resistance. PEEK and PVDF showed quite low water absorption. Because of recent developments in coloration of PEEK, we conclude that PEEK has many advantageous properties that make it a suitable candidate for use as an esthetic metal-free orthodontic wire. PMID:25748467

  8. Fabrication and characterization of ceramic superconducting composite wire

    NASA Astrophysics Data System (ADS)

    Notis, Michael R.; Oh, Min-Seok; Avitzur, Betzalel; Liu, Qin-Fang; Jain, Himanshu

    Methods for fabricating sheathed high-Tc superconducting ceramic wire composites are examined. A thick wall silver tube packed with a variety of cuprate superconducting ceramic powders is used for fabrication by hydrostatic extrusion. For fabrication by wire drawing, a thin wall silver tube containing superconducting ceramic powder is placed in a thick wall tube of stainless steel, nickel, or copper. Several ceramic compositions are fabricated, including YBa2Cu3O7 (1-2-3) and the Bi-Sr-Ca-Cu-O system. It is suggested that the reaction products which form between the ceramic core and the outer sheath during fabrication annealing are caused by a displacement reaction related to the oxidation potential development between the metallic sheath and the ceramic core.

  9. Selection of replacement material for the failed surface level gauge wire in Hanford waste tanks

    SciTech Connect

    Anantatmula, R.P.; Pitman, S.G.; Lund, A.L.

    1995-10-01

    Surface level gauges fabricated from AISI Type 316 stainless steel (316) wire failed after only a few weeks of operation in underground storage tanks at the Hanford Site. The wire failure was determined to be due to chloride ion assisted corrosion of the 316 wire. Radiation-induced breakdown of the polyvinyl chloride (PVC) riser liners is suspected to be the primary source of the chloride ions. An extensive literature search followed by expert concurrence was undertaken to select a replacement material for the wire. Platinum (Pt){minus}20 % Iridium (Ir) alloy was selected as the replacement material from tile candidate materials, P-20% Ir, Pt-1O% Rhodium (Rh), Pt-20%Rh and Hastelloy C-22. The selection was made on the basis of the alloy`s immunity towards acidic and basic environments as well as its adequate tensile properties in the fully annealed state.

  10. Plasma chemistry in wire chambers

    SciTech Connect

    Wise, J.

    1990-05-01

    The phenomenology of wire chamber aging is discussed and fundamentals of proportional counters are presented. Free-radical polymerization and plasma polymerization are discussed. The chemistry of wire aging is reviewed. Similarities between wire chamber plasma (>1 atm dc-discharge) and low-pressure rf-discharge plasmas, which have been more widely studied, are suggested. Construction and use of a system to allow study of the plasma reactions occurring in wire chambers is reported. A proportional tube irradiated by an {sup 55}Fe source is used as a model wire chamber. Condensable species in the proportional tube effluent are concentrated in a cryotrap and analyzed by gas chromatography/mass spectrometry. Several different wire chamber gases (methane, argon/methane, ethane, argon/ethane, propane, argon/isobutane) are tested and their reaction products qualitatively identified. For all gases tested except those containing methane, use of hygroscopic filters to remove trace water and oxygen contaminants from the gas resulted in an increase in the average molecular weight of the products, consistent with results from low-pressure rf-discharge plasmas. It is suggested that because water and oxygen inhibit polymer growth in the gas phase that they may also reduce polymer deposition in proportional tubes and therefore retard wire aging processes. Mechanistic implications of the plasma reactions of hydrocarbons with oxygen are suggested. Unresolved issues in this work and proposals for further study are discussed.

  11. Application of magnetic rods for fixation in orthopedic treatments.

    PubMed

    Shelyakova, Tatiana; Russo, Alessandro; Visani, Andrea; Dediu, Valentin Alek; Marcacci, Maurilio

    2015-06-01

    Achieving an efficient fixation for complicated fractures and scaffold application treatments is a challenging surgery problem. Although many fixation approaches have been advanced and actively pursued, the optimal solution for long bone defects has not yet been defined. This paper promotes an innovative fixation method based on application of magnetic forces. The efficiency of this approach was investigated on the basis of finite element modeling for scaffold application and analytical calculations for diaphyseal fractures. Three different configurations have been analyzed including combinations of small cylindrical permanent magnets or stainless steel rods, inserted rigidly in the bone intramedullary canals and in the scaffold. It was shown that attractive forces as high as 75 N can be achieved. While these forces do not reach the strength of mechanical forces in traditional fixators, the employment of magnetic rods is expected to be beneficial by reducing considerably the interface micromotions. It can additionally support magneto-mechanical stimulations as well as enabling a magnetically assisted targeted delivery of drugs and other bio-agents. PMID:25880709

  12. Napier's bones and Genaille-Lucas's rods

    E-print Network

    Roegel, Denis

    virgulas libri duo [26], John Napier (1550­1617) introduced his famous "bones." Three years afterNapier's bones and Genaille-Lucas's rods Denis Roegel 20 May 2015 Abstract This note presents a survey of Napier's bones and of their more "auto- matic" evolution, the Genaille-Lucas rods

  13. Tipping Time of a Quantum Rod

    ERIC Educational Resources Information Center

    Parrikar, Onkar

    2010-01-01

    The behaviour of a quantum rod, pivoted at its lower end on an impenetrable floor and restricted to moving in the vertical plane under the gravitational potential, is studied analytically under the approximation that the rod is initially localized to a "small-enough" neighbourhood around the point of classical unstable equilibrium. It is shown…

  14. Preform rod feeding module of the optical fiber drawing tower and its algorithm design based on STM32

    NASA Astrophysics Data System (ADS)

    Zhang, Tao; Fan, Zhaocheng; Liu, Guanyu; Geng, Tao; Li, Xin

    2012-10-01

    Preform rod feeding module is pre-stage module in the system of Optical Fiber Drawing Tower, its stability directly affects the wire diameter precision of the fiber. For meeting the demand of scientific research to special optical fiber, we design a new kind of preform rod feeding system, using STM32 as development platform, high-performance actuating motor as executive device and high precision grating ruler as measurement device. In order to improve the stability of the system, we adopt the algorithm design of PID closed-loop control. Finally, real-time monitoring and fast response control of preform rod operation state is realized. The results show that the system runs steadily, and can meet production requirement of special optical fiber.

  15. 21 CFR 888.3020 - Intramedullary fixation rod.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...SERVICES (CONTINUED) MEDICAL DEVICES ORTHOPEDIC DEVICES Prosthetic Devices § 888.3020 Intramedullary fixation rod. ...An intramedullary fixation rod is a device intended to be implanted that consists of a rod made of alloys such as...

  16. 21 CFR 888.3020 - Intramedullary fixation rod.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...SERVICES (CONTINUED) MEDICAL DEVICES ORTHOPEDIC DEVICES Prosthetic Devices § 888.3020 Intramedullary fixation rod. ...An intramedullary fixation rod is a device intended to be implanted that consists of a rod made of alloys such as...

  17. Noise removal at the rod synapse of mammalian retina 

    E-print Network

    van Rossum, Mark; Smith, Robert

    1998-01-01

    Mammalian rods respond to single photons with a hyperpolarization of about 1 mV which is accompanied by continuous noise. Since the mammalian rod bipolar cell collects signals from 20-100 rods, the noise from the converging ...

  18. Drug-eluting Ti wires with titania nanotube arrays for bone fixation and reduced bone infection

    NASA Astrophysics Data System (ADS)

    Gulati, Karan; Aw, Moom Sinn; Losic, Dusan

    2011-10-01

    Current bone fixation technology which uses stainless steel wires known as Kirschner wires for fracture fixing often causes infection and reduced skeletal load resulting in implant failure. Creating new wires with drug-eluting properties to locally deliver drugs is an appealing approach to address some of these problems. This study presents the use of titanium [Ti] wires with titania nanotube [TNT] arrays formed with a drug delivery capability to design alternative bone fixation tools for orthopaedic applications. A titania layer with an array of nanotube structures was synthesised on the surface of a Ti wire by electrochemical anodisation and loaded with antibiotic (gentamicin) used as a model of bone anti-bacterial drug. Successful fabrication of TNT structures with pore diameters of approximately 170 nm and length of 70 ?m is demonstrated for the first time in the form of wires. The drug release characteristics of TNT-Ti wires were evaluated, showing a two-phase release, with a burst release (37%) and a slow release with zero-order kinetics over 11 days. These results confirmed our system's ability to be applied as a drug-eluting tool for orthopaedic applications. The established biocompatibility of TNT structures, closer modulus of elasticity to natural bones and possible inclusion of desired drugs, proteins or growth factors make this system a promising alternative to replace conventional bone implants to prevent bone infection and to be used for targeted treatment of bone cancer, osteomyelitis and other orthopaedic diseases.

  19. Demonstrating Forces between Parallel Wires.

    ERIC Educational Resources Information Center

    Baker, Blane

    2000-01-01

    Describes a physics demonstration that dramatically illustrates the mutual repulsion (attraction) between parallel conductors using insulated copper wire, wooden dowels, a high direct current power supply, electrical tape, and an overhead projector. (WRM)

  20. Wire Jewelry/Black History.

    ERIC Educational Resources Information Center

    Daniel, Robert A.; Robinson, Charles C.

    1984-01-01

    Described is a project which made the study of Black history more real to fifth graders by having them make wire jewelry, smaller versions of the ornate filigreed ironwork produced by slave blacksmiths. (RM)