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1

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

Federal Register 2010, 2011, 2012, 2013

...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,...

2013-10-24

2

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

...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...

2011-11-02

3

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

Federal Register 2010, 2011, 2012, 2013

...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...

2011-10-17

4

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

Federal Register 2010, 2011, 2012, 2013

...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,...

2013-10-01

5

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

Federal Register 2010, 2011, 2012, 2013

...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...

2013-01-14

6

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

...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...

2013-10-02

7

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

Federal Register 2010, 2011, 2012, 2013

...certain alloy steel wire rod from Brazil, Indonesia, Mexico, Moldova...certain alloy steel wire rod from Brazil and the antidumping duty orders...certain alloy steel wire rod from Brazil, Indonesia, Mexico, Moldova...reviews. Limited disclosure of business proprietary information...

2013-12-18

8

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

Federal Register 2010, 2011, 2012, 2013

...957-959, 961, and 962 (Second Review)] Carbon and Certain Alloy Steel Wire Rod From...revocation of the countervailing duty order on carbon and certain alloy steel wire rod...supply and demand conditions or business cycle for the Domestic Like Product that...

2013-06-03

9

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

...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...

2011-06-10

10

Mechanical behavior of ultrahigh strength ultrahigh carbon steel wire and rod  

SciTech Connect

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.

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

1997-07-22

11

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

Federal Register 2010, 2011, 2012, 2013

...available in Notice of Antidumping Duty Orders: Carbon and Certain Alloy Steel Wire Rod from Brazil, Indonesia, Mexico, Moldova, Trinidad and Tobago, and Ukraine, 67 FR 65945 (October 29, 2002), remains dispositive. On October 1, 2012, the...

2012-11-08

12

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

Federal Register 2010, 2011, 2012, 2013

...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...

2011-12-20

13

Microstructural engineering applied to the controlled cooling of steel wire rod: Part I. Experimental design and heat transfer  

NASA Astrophysics Data System (ADS)

The goal of this study was to develop a mathematical model which incorporates heat flow, phase transformation kinetics, and property-structure-composition relationships to predict the mechanical properties of steel rod being control cooled under industrial conditions. Thus, the principles of microstructural engineering have been brought to bear on this interdisciplinary problem by combining computer modeling with laboratory measurements of heat flow, austenite decomposition kinetics, microstructure and mechanical properties, and industrial trials to determine heat transfer and obtain rod samples under known conditions. Owing to the length and diversity of the study, it is reported in three parts,[8191]the first of which is concerned with the heat flow measurements. A relatively simple and reliable technique, involving a preheated steel rod instrumented with a thermocouple secured at its centerline, has been devised to determine the cooling rate in different regions of the moving bed of rod loops on an operating Stelmor line. The measured thermal response of the rod has been analyzed by two transient conduction models (lumped and distributed parameter, respectively) to yield overall heat-transfer coefficients for radiation and convection. The adequacy of the technique has been checked by cooling instrumented rods under well-defined, air crossflow conditions in the laboratory and comparing measured heat-transfer coefficients to values predicted from well-established equations. The industrial thermal measurements have permitted the characterization of a coefficient to account for radiative interaction among adjacent rod loops near the edge and at the center of the bed.

Campbell, P. C.; Hawbolt, E. B.; Brimacombe, J. K.

1991-11-01

14

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

Federal Register 2010, 2011, 2012, 2013

...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...

2011-11-01

15

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

Federal Register 2010, 2011, 2012, 2013

...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...

2011-06-08

16

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

Federal Register 2010, 2011, 2012, 2013

...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...

2011-03-24

17

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

Federal Register 2010, 2011, 2012, 2013

...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...

2010-02-25

18

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

...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...

2012-03-07

19

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

Federal Register 2010, 2011, 2012, 2013

...Trade Development and for Drawing Significant Foreign Investment...Exports of Raw Materials: Wire Rod 3. Government Restraints...subsidized galvanized steel wire from the PRC materially...covers galvanized steel wire which is a cold-drawn carbon...

2011-04-27

20

Stress relaxation properties of prestressed steel wires  

Microsoft Academic Search

In this study, stress relaxation phenomenon has been examined generally. Experiments were carried out on carbon steel wires with diameter 8mm which are particularly used in prestressed concrete composites. Thermomechanically heat treatment was also carried out on this wire in order to relieve the residual stresses accumulated after the cold work. The heat treatment temperature and the stretch ratio, which

Adalet Zeren; Muzaffer Zeren

2003-01-01

21

76 FR 19382 - Galvanized Steel Wire From China and Mexico  

Federal Register 2010, 2011, 2012, 2013

...Galvanized Steel Wire From China and Mexico...scheduling of preliminary phase investigations...commencement of preliminary phase antidumping and countervailing...of galvanized steel wire, provided for in subheading...conference no later than three days before the...

2011-04-07

22

Nondestructive quantitative stress characterization of wire rope and steel cables  

Microsoft Academic Search

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.

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

1998-01-01

23

16. VIEW OF STEEL FLOOR BEAMS WITH TIE RODS, SHOWING ...  

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

16. VIEW OF STEEL FLOOR BEAMS WITH TIE RODS, SHOWING SWAY BRACING, SUPPORT TIMBER STRINGERS AND BECK, WEST END, LOOKING WEST - Hot Springs Bridge, Spanning Bruneau River, Hot Springs Road, Bruneau, Owyhee County, ID

24

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

Federal Register 2010, 2011, 2012, 2013

...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:...

2010-06-28

25

Characterisation of severely deformed austenitic stainless steel wire  

E-print Network

: Martensite, Mechanical Stabilization, Interface structure, Stainless steel Introduction Textiles woven usingCharacterisation 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

Cambridge, University of

26

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

Federal Register 2010, 2011, 2012, 2013

...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...

2013-07-03

27

Penetration of concrete targets with ogive-nose steel rods  

Microsoft Academic Search

We conducted depth of penetration experiments in concrete targets with 3.0 caliber-radius-head, steel rod projectiles. The concrete targets with 9.5mm diameter limestone aggregate had a nominal unconfined compressive strength of 58.4MPa (8.5ksi) and density 2320kg\\/m3. To explore geometric projectile scales, we conducted two sets of experiments. Projectiles with length-to-diameter ratio of ten were machined from 4340Rc 45 steel, round stock

D. J. Frew; S. J. Hanchak; M. L. Green; M. J. Forrestal

1998-01-01

28

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

...Wire Corp., Insteel Wire Products Company, and Sumiden Wire Products Corp...Jiangyin Walsin Steel Cable Co., Ltd. (Walsin...Jiangyin Walsin Steel Cable Co., Ltd. (Walsin...Pre-Stressed Concrete Steel Wire Strand from the...

2010-07-07

29

75 FR 8113 - Prestressed Concrete Steel Wire Strand From China  

Federal Register 2010, 2011, 2012, 2013

...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...

2010-02-23

30

Aluminum/steel wire composite plates exhibit high tensile strength  

NASA Technical Reports Server (NTRS)

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.

1966-01-01

31

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

Federal Register 2010, 2011, 2012, 2013

...Certain Steel Threaded Rod From India and Thailand Determinations On the basis of the record...injured by reason of imports from India and Thailand of certain steel threaded rod, provided...imports of certain steel threaded rod from Thailand. Accordingly, effective June 27,...

2013-11-05

32

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

Federal Register 2010, 2011, 2012, 2013

...applied. In addition, the steel threaded rod, bar, or studs...scope of this investigation are steel threaded rod, bar, or studs...tungsten, or 0.012 percent of boron, or 0.10 percent of molybdenum...15 percent of zirconium. Steel threaded rod is currently...

2013-12-19

33

A study of the deformation of patented steel wire  

Microsoft Academic Search

Comparisons of transmission electron micrographs of transverse sections of heavily drawn patented steel wire with existing\\u000a metallographic and strength data were made with the aid of a computer. Both fragmentation of the cementite and the local deformation\\u000a mode within the wire,i.e., plane strain elongation, an effect of the wire texture of the ferrite, were taken into account in order to

George Langford

1970-01-01

34

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

Federal Register 2010, 2011, 2012, 2013

...determines that prestressed concrete steel rail tie wire...is high carbon steel wire; stress relieved or low relaxation; indented or otherwise...suitable for use as prestressed tendons in concrete...High carbon steel is defined as...

2013-12-12

35

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

36

Fabrication of sintered steel wire mesh and its compressive properties  

Microsoft Academic Search

Porous steel wire mesh with open porosities of 33.90–56.27% and pore sizes of 25–1300?m has been prepared by metallurgical route. The porous morphologies and porosities of the wire mesh have been investigated in terms of forming pressure, sintering temperature and sintering holding time. The pore size distribution in the as-prepared samples has been determined by means of metallographic statistic measurement.

P. Liu; G. He; L. H. Wu

2008-01-01

37

76 FR 13665 - Arcelor Mittal, Formerly Known as Mittal Steel Walker Wire, a Subsidiary of Arcelor Mittal...  

Federal Register 2010, 2011, 2012, 2013

...Mittal, Formerly Known as Mittal Steel Walker Wire, a Subsidiary of Arcelor Mittal...Mittal, formerly known as Mittal Steel Walker Wire, a subsidiary of Arcelor Mittal...issued for all workers of Mittal Steel Walker Wire, Inc., Ferndale, Michigan,...

2011-03-14

38

Processing and mechanical behavior of hypereutectoid steel wires  

SciTech Connect

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.

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

1996-06-25

39

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

Federal Register 2010, 2011, 2012, 2013

...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....

2012-01-20

40

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

Federal Register 2010, 2011, 2012, 2013

...Concrete Steel Rail Tie Wire From China, Mexico...scheduling of preliminary phase investigations. AGENCY...commencement of preliminary phase antidumping investigations...concrete steel rail tie wire from China, Mexico...conference no later than three days before the...

2013-04-30

41

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

Federal Register 2010, 2011, 2012, 2013

...Preliminary)] Steel Wire Garment Hangers From...Scheduling of Preliminary Phase Investigations AGENCY...commencement of preliminary phase antidumping and countervailing...and Vietnam of steel wire garment hangers, provided...conference no later than three days before the...

2012-01-06

42

Nested Stainless Steel Wire Array Implosions on the Z Accelerator  

Microsoft Academic Search

Recent experiments on the 20 MA Z accelerator have employed stainless steel wire arrays to study the effects of large diameter nested configurations on Iron K-shell emissions. Stainless steel consists primarily of iron (72%), which radiates in the K-shell at 6.7 keV, but has significant quantities of Chromium (18.6%)and Nickel(8.2%) as well, which radiate at 5.6 keV and 7.9 keV

C. A. Coverdale; C. Deeney; M. R. Douglas; P. D. Lepell; J. P. Apruzese; K. G. Whitney; J. W. Thornhill; J. Davis; D. Bell

2000-01-01

43

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

Federal Register 2010, 2011, 2012, 2013

...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,...

2013-06-20

44

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

Federal Register 2010, 2011, 2012, 2013

...strand made from galvanized wire is only excluded from the scope...Pre-Stressed Concrete Steel Wire Strand from the People's Republic...See Prestressed Concrete Steel Wire Strand From the People's Republic...Ltd., Jiangyin Walsin Steel Cable Co., Ltd.,. Jiangyin...

2010-06-29

45

Corrosion and embrittlement of high-strength steel bridge wires  

NASA Astrophysics Data System (ADS)

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.

Vermaas, Garry Wayne

46

Nano-crystallization of steel wire and its wear behavior  

Microsoft Academic Search

As carbon steel wire is widely used in civil engineering and industry, it is quite important to increase its strength. In the present paper, a severe cold drawing approach is applied to increase strength and is shown to produce nano grains. With increasing true strain, the tensile strength increases continuously and the cementite flake thickness decreases correspondingly. It is observed

Y. H. Xu; J. H. Peng; L. Fang

2008-01-01

47

Mechanical and superconducting properties of Nb3Sn wires with Nb-rod-processed CuNb reinforcement  

NASA Astrophysics Data System (ADS)

New Nb-rod-processed CuNb reinforced Nb3Sn superconducting wires have been developed for large high field magnet applications. The critical current, Ic, mechanical properties and resistivity are investigated. The residual strain and irreversible strain are found to be 0.35% and 0.77%, respectively. We found that the Nb-rod-processed wire has a large strain sensitivity to Ic. However, the wire has good mechanical properties, having a 0.2% proof stress of 280 MPa and a Young’s modulus of 150 GPa. This means that the stress sensitivity of the Ic for the wire is small. These results show that the Nb-rod-processed wire is suitable as a strand of Rutherford cable for a high field superconducting magnet.

Oguro, Hidetoshi; Awaji, Satoshi; Watanabe, Kazuo; Sugimoto, Masahiro; Tsubouchi, Hirokazu

2013-09-01

48

PATHFINDER ATOMIC POWER PLANT. BORON STAINLESS STEEL CONTROL RODS FOR PATHFINDER REACTOR. Final Summary Report  

Microsoft Academic Search

An extensive development, fabrication, and design analysis program was ; completed on 2 wt% boron stainiess steel for Pathfinder boiler and superheater ; control rods. Results indicated that the control rods will operate ; satisfactorily in the reactor under all foreseeable conditions. It was concluded ; that the maximum local burnup on the boiler rods is limited to 1.0 core

D. A. Patterson; D. A. Nehrig; R. H. Klumb; T. E. Peterson

1963-01-01

49

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

...applied. In addition, the steel threaded rod, bar, or studs...in the scope of the order are steel threaded rod, bar, or studs...tungsten, or 0.012 percent of boron, or 0.10 percent of molybdenum...15 percent of zirconium. Steel threaded rod is currently...

2011-11-04

50

A contribution to the manufacture and characteristics of steel-wire-reinforced aluminum  

NASA Technical Reports Server (NTRS)

Aluminum materials are strengthened through embedding or inter-calation of fine steel wires by sintering. These wires should be parallel to each other and aligned in the direction of the stress to be received by the finished product. With a proportion of approximately 50 vol-% of steel wires, the tensile strength of the unreinforced alloy is increased approximately to triple its original value.

Gruenthaler, K. H.; Heinrich, W.; Janes, S.; Nixdorf, J.; Poeschel, E.

1982-01-01

51

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

PubMed Central

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.

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

2014-01-01

52

Experimental research on the mechanical property of prestressing steel wire during and after heating  

Microsoft Academic Search

The mechanical property of prestressing steel wire during and after heating is the key factor in the design of fire resistance\\u000a and after-fire damage evaluation of prestressed structures. Tensile experiment of 16 prestressing steel wires (f\\u000a ptk = 1770 N\\/mm2, d = 5 mm, low relaxation of stress) at high temperature and tensile experiment of 14 prestressed steel wires after

Wenzhong Zheng; Qiong Hu; Haoyu Zhang

2007-01-01

53

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

SciTech Connect

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.

Klmaku, Snukn; Syla, Nairn [University of Prishtina, Sheshi Neena Terezee, 10000, Prishtinee, Kosovo (Country Unknown); Dilo, Teuta [University of Tirana, Sheshi Nenee Tereza, Tirana (Albania)

2010-01-21

54

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

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Copper coated steel reinforced... § 1755.702 Copper coated steel reinforced...service wire. (a) Conductors. (1) Each conductor...1.4. (e) Electrical requirements —(1) Conductor resistance....

2013-01-01

55

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

Code of Federal Regulations, 2011 CFR

...2011-01-01 false Copper coated steel reinforced... § 1755.702 Copper coated steel reinforced...service wire. (a) Conductors. (1) Each conductor...1.4. (e) Electrical requirements —(1) Conductor resistance....

2011-01-01

56

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

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Copper coated steel reinforced... § 1755.702 Copper coated steel reinforced...service wire. (a) Conductors. (1) Each conductor...1.4. (e) Electrical requirements —(1) Conductor resistance....

2012-01-01

57

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

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Copper coated steel reinforced... § 1755.702 Copper coated steel reinforced...service wire. (a) Conductors. (1) Each conductor...1.4. (e) Electrical requirements —(1) Conductor resistance....

2010-01-01

58

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

...2014-01-01 false Copper coated steel reinforced... § 1755.702 Copper coated steel reinforced...service wire. (a) Conductors. (1) Each conductor...1.4. (e) Electrical requirements —(1) Conductor resistance....

2014-01-01

59

Pull-out strength of axially loaded steel rods bonded in glulam perpendicular to the grain  

Microsoft Academic Search

A total of 86 pull-out strength tests on glued-in steel rods with metric threads M12, M16 and M20 are reported in this paper.\\u000a The rods were bonded in glulam made of Norway spruce lamellas perpendicular to the grain by means of an epoxy-type adhesive\\u000a using the GSA?-system. The slenderness ratios of the rods ? calculated from the anchoring lengths ?

R. Widmann; R. Steiger; E. Gehri

2007-01-01

60

Energy reflection in a cylindrical steel rod subjected to longitudinal impact  

E-print Network

ENERGY REFLECTION IN A CYLINDRICAL STEEL ROD SUBJECTED TO LONGITUDINAL IMPACT A Thesis By Charles Gene Lyons Approved as to style and content by: Chairman of Comm ttee Head of Department (Member) (Memb er) May 1966 4 7N~ ACKNOWLEDGMENTS...&M University Directed by: Dr. Charles H. Samson, Jr. ENERGY REFLECTION IN A CYLINDRICAL STEEL ROD SUBJECTED TO LONGITUDINAL IMPACT The theory of longitudinal impact and the theory of one-dimen- sional wave propagation have played important roles in recent...

Lyons, Charles Gene

2012-06-07

61

Fractal roughness structures of precision-machined WC-Co- and Inconel 625-coated steel rods  

Microsoft Academic Search

Thermally sprayed WC-Co coatings on steel rods were machined by grinding and turning using diamond tools, and thermally sprayed\\u000a Inconel 625 coatings on steel rods were machined by turning using various WC tools. Four of these samples were selected for\\u000a surface characterization using a stylus roughness tester. The results show that precision-machined WC-Co and Inconel-625 surfaces\\u000a can be identified as

Z. W. Zhong; Z. F. Peng

2007-01-01

62

Mechanical and thermal stability of heavily drawn pearlitic steel wire  

SciTech Connect

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.

Aernoudt, E.; Delrue, H.; Van Humbeeck, J. [K.U. Leuven (Belgium). Dept. Metallkunde en Toegepaste Materiaalkunde; Watte, P. [NV Philips Industries, Turnhout (Belgium); Sevillano, J.G. [Centro de Estudios e Investigaciones Tecnicas de Guipuzcoa, San Sebastian (Spain); Lefever, I. [Bekaert Steel Wire Corp., Kortrijk (Belgium)

1996-12-31

63

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

SciTech Connect

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.

Hugh McIlroy; Hongbin Zhang; Kurt Hamman

2008-05-01

64

Warm forming of acid resistant steel wires used for manufacturing of springs  

Microsoft Academic Search

Acid resistant steel wires used for manufacturing of springs are required to show high strength properties, and especially very high fatigue strength while maintaining good plastic properties. The production of such wire is technologically difficult. The objective of the paper is to present the results of extensive laboratory and industrial research concerning the search for new conditions of producing wires

A. Sko?yszewski; M. Pa?ko; J. ?uksza; M. Rumi?ski

2002-01-01

65

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

Federal Register 2010, 2011, 2012, 2013

...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,...

2013-09-19

66

77 FR 50713 - Steel Wire Garment Hangers From Taiwan and Vietnam; (Corrected Notice) Scheduling of the Final...  

Federal Register 2010, 2011, 2012, 2013

...Steel Wire Garment Hangers From Taiwan and Vietnam; (Corrected Notice) Scheduling of the...by reason of subsidized imports from Vietnam of steel wire garment hangers and less- than-fair-value imports from Taiwan and Vietnam of steel wire garment hangers,...

2012-08-22

67

Dilution control in single-wire stainless steel submerged arc cladding  

Microsoft Academic Search

An experimental study of the effects of bead-to-bead stepover, wire size, wire feed speed, voltage, flux chromium content, and polarity on dilution and ferrite in single-wire submerged arc cladding of ER309L on mild steel plate is described. Low dilution was found to be promoted by reduced stepover, reduced wire feed speed, and DC electrode negative polarity. Use of a high-chromium

Kotecki

1996-01-01

68

75 FR 4104 - Prestressed Concrete Steel Wire Strand From China  

Federal Register 2010, 2011, 2012, 2013

...by American Spring Wire Corp. (Bedford Heights, OH); Insteel Wire Products Co. (Mt. Airy, NC); and Sumiden Wire Products Corp. (Dickson...participate in the final phase of these investigations...filed no later than three days before the...

2010-01-26

69

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

Federal Register 2010, 2011, 2012, 2013

...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...indicated: 1.80 percent of manganese, or 1.50 percent of...

2011-09-06

70

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

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.

Horwood, W.A.

1982-05-01

71

Corrosion behavior of wire-arc-sprayed stainless steel coating on mild steel  

NASA Astrophysics Data System (ADS)

The corrosion characteristics of a wire-are-sprayed stainless steel coating on mild steel have been investigated in regards to atomizing gases and sealing treatment. Salt spray test was performed. The corrosion behavior of the coating was observed under a microscope succesively through a cycling test of wetting and drying in a salt solution. The sealing-treated coating was found to rust faster compared with the non-sealing-treated coating; it protected the mild steel substrate against corrosion, but even it deteriorated the coating itself due to the interruption of the substrate as an anode. The air-atomized coating ruste more heavily than the nitrogen-atomized one. Four different phases were observed in the coating in regards to corrosion behavior; namely, chromium-based oxide, iron-based oxide, chromium-depleted metallic phase, and stainless steel matrix phase. It was found that the chromium-depleted metallic phase and the iron-based oxide are non-corrosion-resistant, whereas the chromium-based oxide and the stainless steel matrix phase are corrosion-resistant.

Zeng, Z.; Sakoda, N.; Tajiri, T.

2006-09-01

72

Assessment of depth of case-hardening in steel rods by electromagnetic methods  

Microsoft Academic Search

Case depth measurements of surface hardened steel parts are important for quality control. The magnetic properties, including initial permeability, differential permeability and saturation\\u000amagnetization of a series of induction-hardened and carburized steel rods were studied through measurements, with the aim of developing new methods to evaluate the case depth\\u000anondestructively. Four-point alternating current potential drop (ACPD) method also has the

Chongxue Zhang

2009-01-01

73

Flexural strengthening of RC beams using distributed prestressed high strength steel wire rope: theoretical analysis  

Microsoft Academic Search

Various strengthening techniques for structural elements using different materials have been investigated. Recently, a new, reliable and cost-effective strengthening technique with distributed prestressed high strength steel wire rope (P-SWR technique) was proposed. This paper mainly focuses on theoretical analysis of the flexural behaviour of reinforced concrete (RC) beams strengthened with the P-SWR strengthening technique. First, mechanical properties of steel wire

Gang Wu; Zhishen Wu; Yang Wei; Jianbiao Jiang; Yi Cui

2012-01-01

74

Influence of filler wire composition on weld microstructures of a 444 ferritic stainless steel grade  

E-print Network

1 Influence of filler wire composition on weld microstructures of a 444 ferritic stainless steel'Aumône, France. Abstract Seven compositions of metal cored filler wires for Gas Metal Arc Welding (GMAW. This was due to the low Ti transfer ratio during arc welding. Moreover, Ti increased the wetting angle

Paris-Sud XI, Université de

75

Study of high toughness ferrite wire for submerged arc welding of pipeline steel  

Microsoft Academic Search

With the development of steel plate and the need of high toughness pipeline, it is necessary to develop wire and flux for high efficiency submerged arc welding to produce weld metal, which can match the properties of the base metal. The weld metal is designed to mainly consist of acicular ferrite. The variations of elements between wire and weld metal,

Yun Peng; Wuzhu Chen; Zuze Xu

2001-01-01

76

Timber Frame Moment Joints with Glued-In Steel Rods - A Designer's Perspective  

Microsoft Academic Search

This paper presents a method of evaluating joint strength for moment and axial forces based on traditional mechanics theory adapted for use with timber. It takes into consideration the effects of time dependant deformation in timber at bearing interfaces and considers also the effects of stress concentrations imposed by the steel rods on the timber. The approach provides a methodology

Mark L Batchelar

77

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

Federal Register 2010, 2011, 2012, 2013

...exporters of galvanized steel wire from the PRC. The...See Circular Welded Austenitic Stainless Pressure Pipe...producers of galvanized steel wire that do not receive...or electroplating). Steel products to be included... 1.80 percent of manganese, or 1.50...

2011-04-27

78

Hydrofluoric acid etched stainless steel wire for solid-phase microextraction.  

PubMed

Stainless steel wire has been widely used as the substrate of solid-phase microextraction (SPME) fibers to overcome the shortcomings of conventional silica fibers such as fragility, by many researchers. However, in previous reports various sorbent coatings are always required in conjunction with the stainless steel wire for SPME. In this work, we report the bare stainless steel wire for SPME without the need for any additional coatings taking advantage of its high mechanical and thermal stability. To evaluate the performance of stainless steel wire for SPME, polycyclic aromatic hydrocarbons (PAHs), benzene, toluene, ethylbenzene, chlorobenzene, n-propylbenzene, aniline, phenol, n-hexane, n-octane, n-decane, n-undecane, n-dodecane, chloroform, trichloroethylene, n-octanol, and butanol were tested as analytes. Although the stainless steel wire had almost no extraction capability toward the tested analytes before etching, it did exhibit high affinity to the tested PAHs after etching with hydrofluoric acid. The etched stainless steel wire gave a much bigger enhancement factor (2541-3981) for the PAHs than the other analytes studied (< or = 515). Etching with hydrofluoric acid produced a porous and flower-like structure with Fe(2)O(3), FeF(3), Cr(2)O(3), and CrF(2) on the surface of the stainless steel wire, giving high affinity to the PAHs due to cation-pi interaction. On the basis of the high selectivity of the etched stainless steel wire for PAHs, a new SPME method was developed for gas chromatography with flame ionization detection to determine PAHs with the detection limits of 0.24-0.63 microg L(-1). The precision for six replicate extractions using one SPME fiber ranged from 2.9% to 5.3%. The fiber-to-fiber reproducibility for three parallel prepared fibers was 4.3-8.8%. One etched stainless steel wire can stand over 250 cycles of SPME without significant loss of extraction efficiency. The developed etched stainless steel wire is very stable, highly selective, and reproducible for the SPME of PAHs. PMID:19445486

Xu, Hua-Ling; Li, Yan; Jiang, Dong-Qing; Yan, Xiu-Ping

2009-06-15

79

Dilution control in single-wire stainless steel submerged arc cladding  

SciTech Connect

An experimental study of the effects of bead-to-bead stepover, wire size, wire feed speed, voltage, flux chromium content, and polarity on dilution and ferrite in single-wire submerged arc cladding of ER309L on mild steel plate is described. Low dilution was found to be promoted by reduced stepover, reduced wire feed speed, and DC electrode negative polarity. Use of a high-chromium flux can broaden the tolerance for dilution, providing an austenitic deposit free of martensite, and containing at least 4 FN for assurance of freedom from hot cracking over a broader range of dilutions.

Kotecki, D.J. [Lincoln Electric Co., Cleveland, OH (United States)

1996-02-01

80

Effect of Residual Stress-Strain Profile on Hydrogen Embrittlement Susceptibility of Prestressing Steel Wires  

Microsoft Academic Search

Cold drawn wires of eutectoid pearlitic steel are widely used for prestressing concrete structures which usually work in hostile\\u000a or aggressive environments, so that stress corrosion cracking of prestressing steel is a problem of major technological concern.\\u000a In addition, there is general agreement that hydrogen embrittlement (HE) plays an important role in the environmental cracking\\u000a of such a steel due

J. Toribio; V. Kharin

81

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

Federal Register 2010, 2011, 2012, 2013

...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...

2010-01-13

82

78 FR 56655 - Certain Steel Threaded Rod From the People's Republic of China; 2012-2013; Partial Rescission of...  

Federal Register 2010, 2011, 2012, 2013

...A-570-932] Certain Steel Threaded Rod From the People's Republic of China; 2012-2013; Partial Rescission of the Fourth Antidumping Duty Administrative Review AGENCY: Import Administration, International Trade Administration, Department of...

2013-09-13

83

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

NASA Technical Reports Server (NTRS)

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.

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

1982-01-01

84

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

Federal Register 2010, 2011, 2012, 2013

...ILO''), the World Bank's Doing Business in the Philippines report, and The Cost of Doing Business in Camarines Sur that will allow the...Wire Rod From Brazil, Canada, Egypt, Germany, Indonesia, Mexico, Moldova,...

2011-11-04

85

Effect of residual stress-strain profiles on hydrogen-induced fracture of prestressing steel wires  

Microsoft Academic Search

We analyze the influence of the distributions of residual stresses and strains formed after the surface treatment of cold-drawn\\u000a steel wires used as the reinforcement of prestressed reinforced concrete on the susceptibility of these wires to hydrogen\\u000a embrittlement characterized by the time to fracture in the tests carried out according to the regulations of the FIP (Fdration\\u000a Internationale de la

J. Toribio; V. Kharin

2006-01-01

86

Strain aging in heavily drawn eutectoid steel wires  

SciTech Connect

In the past, strain aging in severely drawn wires was investigated by means of various techniques ranging from tensile testing and electrical measurements to ion probe microscopy and Moessbauer spectroscopy. The investigation in this paper is devoted to a quantitative study of the heat effects induced by aging heavily drawn wire. The advent of powerful calorimetric techniques opened some new perspectives to study static strain aging, which are also applicable to fine wires. The authors studied the kinetics of static strain aging by means of differential scanning calorimetry (DSC) and thermoelectrical methods (TEP). It is shown that DSC can be easily adopted to discriminate between the stages during which strain aging proceeds. This approach enables an elegant determination of the activation energies of the stages of strain aging. In addition, the thermopower of wire was measured in order to disclose the mechanism of strain aging which operates below 250 C.

Watte, P.; Humbeeck, J. Van; Aernoudt, E. [KU Leuven (Belgium). Dept. of Metallurgy and Materials Engineering] [KU Leuven (Belgium). Dept. of Metallurgy and Materials Engineering; Lefever, I.

1996-01-01

87

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

E-print Network

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

Mandelis, Andreas

88

Temperature Response of OPGW with Armored Aluminum Covered Steel Wires Submitted to Short-Circuit  

Microsoft Academic Search

The present paper focuses on the heat transfer problem that describes the heat conduction effects in an OPGW submitted to short-circuit. An analytical solution is proposed which accounts for the effect of the temperature gradients in the aluminum covered steel wires, and the contact thermal resistance in the effective contact surface between the fiber extruded aluminum tube and the aluminum

Sergio Colle; Marcelo A. Andrade; João T. Pinho; João C. V. da Silva; Mauro Bedia; Carlos E. Veiga; Júlio N. Scussel

89

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

NASA Astrophysics Data System (ADS)

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.

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.

2009-01-01

90

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

SciTech Connect

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.

Williamson, K. M.; Kantsyrev, V. L.; Esaulov, A. A.; Safronova, A. S.; Ouart, N. D.; Yilmaz, F. M.; Shrestha, I. K.; Shlyaptseva, V. [Department of Physics, University of Nevada, Reno, Nevada 89557 (United States); McBride, R. D.; Chalenski, D. A.; Douglass, J. D.; Greenly, J. B.; Hammer, D. A.; Kusse, B. R. [Laboratory of Plasma Studies, Cornell University, Ithaca, New York 14853 (United States)

2009-01-15

91

76 FR 27994 - First Administrative Review of Steel Wire Garment Hangers From the People's Republic of China...  

Federal Register 2010, 2011, 2012, 2013

...Trade Administration [A-570-918] First Administrative Review of Steel Wire Garment...Register the preliminary results of the first administrative review of the antidumping...Preliminary Rescission, in Part, of the First Antidumping Duty Administrative...

2011-05-13

92

Cracking and toughness of concrete and polymer-concrete dispersed with short steel wires  

NASA Astrophysics Data System (ADS)

Models for quantitative description of the fracture processes occurring in fiber reinforced brittle solids are discussed. Experimental measurements of cracking stress and toughness for two brittle fibrous composites are compared with the theoretical predictions. The two brittle matrices are concrete and concrete impregnated with polymethyl methacrylate reinforced by discontinuous (short) high strength steel wires. It involved extracting a single steel wire from each brittle matrix to evaluate the debonding stress and pull-out stress as a function of fiber embedded length. These key material parameters and the energetics of cracking determined in three-point flexural experiments, together with the cracking and toughening equations are then used to characterize the fracture behavior of fiber strengthened concrete and polymer-concrete composites.

Peaumont, P. W. R.

93

Structure and mechanical properties of as-received and heat-treated stainless steel orthodontic wires.  

PubMed

A combination of x-ray diffraction analysis with mechanical testing in tension and bending has been used to investigate the metallurgical structures and mechanical properties for as-received and heat-treated stainless steel orthodontic wires. Two different proprietary wire types were selected, having a wide range in cross-sectional dimensions: 0.016-, 0.030-, and 0.050- or 0.051-inch diameters, and 0.017 X 0.025-inch rectangular specimens. Heat treatments were performed for 10 minutes in air at temperatures of 700 degrees, 900 degrees, and 1100 degrees F. The x-ray diffraction patterns showed that the as-received 0.016-inch diameter and 0.017 X 0.025-inch wires of both proprietary types consisted of a two-phase structure containing a martensitic phase along with the austenitic phase. This duplex structure was converted entirely to austenite with heat treatment for one wire type, but persisted after heat treatment for the other wire type. The largest diameter, 0.050- or 0.051-inch, wires of both types were single-phase austenitic structure for both the as-received and heat-treated conditions. Evidence of substantial preferred crystallographic orientation or texturing in these orthodontic wires was also found by x-ray diffraction. As in our previous studies, the modulus of elasticity in bending was significantly less than the value obtained in tension for only the smaller cross-sectional wires. The 0.05 radian flexural yield strength correlated more closely with the 0.2% offset yield strength in tension than with the yield strength for 0.05% and 0.1% permanent offsets. PMID:3422776

Khier, S E; Brantley, W A; Fournelle, R A

1988-03-01

94

Bonding Mechanisms in Resistance Microwelding of 316 Low-Carbon Vacuum Melted Stainless Steel Wires  

NASA Astrophysics Data System (ADS)

Resistance microwelding (RMW) is an important joining process used in the fabrication of miniature instruments, such as electrical and medical devices. The excellent corrosion resistance of 316 low-carbon vacuum melted (LVM) stainless steel (SS) wire makes it ideal for biomedical applications. The current study examines the microstructure and mechanical properties of crossed resistance microwelded 316LVM wire. Microtensile and microhardness testing was used to analyze the mechanical performance of welds, and fracture surfaces were examined using scanning electron microscopy. Finally, a bonding mechanism is proposed based on optimum joint breaking force (JBF) using metallurgical observations of weld cross sections. Moreover, comparisons with RMWs of Ni, Au-plated Ni, and SUS304 SS wire are discussed.

Khan, M. I.; Kim, J. M.; Kuntz, M. L.; Zhou, Y.

2009-04-01

95

Development of filler wires for welding of reduced activation ferritic martenstic steel for India's test blanket module of ITER  

Microsoft Academic Search

Indigenous development of reduced activation ferritic martensitic steel (RAFMS) has become mandatory to India to participate in the International Thermo-nuclear Experimental Reactor (ITER) programme. Optimisation of RAFMS is in an advanced stage for the fabrication of test blanket module (TBM) components. Simultaneously, development of RAFMS filler wires has been undertaken since there is no commercial filler wires are available for

G. Srinivasan; B. Arivazhagan; S. K. Albert; A. K. Bhaduri

2011-01-01

96

Influence of an aqueous environment on the fretting behaviour of steel wires used in civil engineering cables  

Microsoft Academic Search

Civil engineering cables are submitted to important loadings and are often exposed to severe environmental conditions (marine environment, rain, pollution, …). They are subjected to two main damage phenomena which are fretting-fatigue and corrosion. The influence of water on the fretting behaviour between two cable wires is investigated in this paper. Fretting tests on cold drawing steel wires were performed

V. Périer; L. Dieng; L. Gaillet; S. Fouvry

2011-01-01

97

Surface Preparation of Powder Metallurgical Tool Steels by Means of Wire Electrical Discharge Machining  

NASA Astrophysics Data System (ADS)

The surface of two types of powder metallurgical (PM) tool steels ( i.e., with and without nitrogen) was prepared using wire electrical discharge machining (WEDM). From each grade of tool steel, seven surfaces corresponding to one to seven passes of WEDM were prepared. The WEDM process was carried out using a brass wire as electrode and deionized water as dielectric. After each WEDM pass the surface of the tool steels was thoroughly examined. Surface residual stresses were measured by the X-ray diffraction (XRD) technique. The measured stresses were found to be of tensile nature. The surface roughness of the WEDM specimens was measured using interference microscopy. The surface roughness as well as the residual stress measurements indicated an insignificant improvement of these parameters after four passes of WEDM. In addition, the formed recast layer was characterized by means of scanning electron microscopy (SEM), XRD, and X-ray photoelectron spectroscopy (XPS). The characterization investigation clearly shows diffusion of copper and zinc from the wire electrode into the work material, even after the final WEDM step. Finally, the importance of eliminating excessive WEDM steps is thoroughly discussed.

Hatami, Sepehr; Shahabi-Navid, Mehrdad; Nyborg, Lars

2012-09-01

98

Internal attachment of laser beam welded stainless steel sheathed thermocouples into stainless steel upper end caps in nuclear fuel rods for the LOFT Reactor  

SciTech Connect

The Exxon Nuclear Company, Inc., acting as a subcontractor to EG and G Idaho Inc., Idaho National Engineering Laboratory, Idaho Falls, Idaho, conducted a laser beam welding study to attach internal stainless steel thermocouples into stainless steel upper end caps in nuclear fuel rods. The objective of this study was to determine the feasibility of laser welding a single 0.063 inch diameter stainless steel (304) sheathed thermocouple into a stainless steel (316) upper end cap for nuclear fuel rods. A laser beam was selected because of the extremely high energy input in unit volume that can be achieved allowing local fusion of a small area irrespective of the difference in material thickness to be joined. A special weld fixture was designed and fabricated to hold the end cap and the thermocouple with angular and rotational adjustment under the laser beam. A commercial pulsed laser and energy control system was used to make the welds.

Welty, R.K.; Reid, R.D.

1980-01-01

99

High-Density Pulse Current-Induced Unsteady Stress-Strain State in a Long Rod  

Microsoft Academic Search

The results of experimental investigations and numerical calculations of the unsteady stress-strain state in a thin steel rod (wire length) prestressed statically below the yield strength upon the passage of a high-density current pulse are presented. The current pulse gives rise to oscillations of axial stresses with a period corresponding to the period of natural longitudinal oscillations of the rod.

G. V. Stepanov; A. I. Babutskii; I. A. Mameev

2004-01-01

100

Microstructure analysis of the martensitic stainless steel surface fine-cut by the wire electrode discharge machining (WEDM)  

Microsoft Academic Search

In this research, quenched and tempered martensitic stainless steels, AISI 440A, were subjected to multi-cutting passes by wire electrical discharge machining (WEDM). The WEDM is widely applied to final surface shaping of harden steel. The steel was roughly machined at first cutting pass, semi-finished by two cutting passes, and then finished by one cutting passes, all machined by WEDM. The

C. A Huang; F. Y Hsu; S. J Yao

2004-01-01

101

Dilution control in single-wire stainless steel submerged arc cladding  

SciTech Connect

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.

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

1994-12-31

102

On the Effect of Counterface Materials on Tribo-Behavior of Steel Wire Sliding Under Dry Contact Condition  

NASA Astrophysics Data System (ADS)

Steel wires are implemented in numerous systems and undergo frequent faults due to tribological loading conditions. Therefore, this paper presents a study on the tribological performance of steel wire sliding against different counterfaces, namely, aluminum alloy, stainless steel, and mild steel using a block-on-ring tribo-tester. According to common mechanisms, the tests were performed under 5 N applied load and 0.15 m/s sliding velocity under dry contact condition. Additionally, scanning electron microscopy was used to examine the damaged features on the worn surfaces of the steel wire. Weight loss and friction coefficient results were presented versus sliding distances (0-1.6 km). In general, the results showed that friction coefficient did not reach the steady state due to the transformation of the wear mechanism from adhesive to abrasive mode. Nevertheless, the average of friction coefficient was found to be about 0.7 ± 0.1 for stainless steel and 0.2 ± 0.1 for mild steel. Weight loss gradually increased with the increase of sliding distance. The micrographs of worn surfaces revealed that the contact mechanism was transformed from adhesive to abrasive wear mode as implied by the scars and grooves on the wire surface.

Chee, Su Be; Al Shalabi, Ammar; Yousif, B. F.

103

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.  

National Technical Information Service (NTIS)

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 elec...

W. A. Horwood

1982-01-01

104

In situ neutron diffraction of heavily drawn steel wires with ultra-high strength under tensile loading  

SciTech Connect

To make clear the strengthening mechanism of heavily drawn steel wires exhibiting ultra-high strength, in situ neutron diffraction during tensile loading was performed. A ferrite steel (FK) subjected to a true strain of 6.6 and a pearlite steel (PS) subjected to 4.0 were extended on a tensile tester and (1 1 0) diffraction profiles were measured at various holding stresses. Tensile strengths of steel FK and PS are 1.7 and 3.7 GPa, respectively. The change in (1 1 0) spacing with tensile stress is reversible, i.e., elastic, close to the relevant tensile strength. A stress versus (1 1 0) lattice plane strain is linear for steel FK while evidently nonlinear at higher stresses for steel PS. In steel PS in which cementite peaks were hardly observed, the strengthening mechanism is postulated to be different from that for as-patented pearlite steels.

Tomota, Y. [Graduate School of Science and Engineering, Institute of Applied Beam Science, Ibaraki University, Hitachi, Ibaraki 316-8511 (Japan)]. E-mail: tomota@mx.ibaraki.ac.jp; Suzuki, T. [Faculty of Engineering, Research Center for Superplasticity, Ibaraki University, Hitachi, Ibaraki 316-8511 (Japan); Kanie, A. [Graduate student of Ibaraki University, Hitachi, Ibaraki 316-8511 (Japan); Shiota, Y. [Graduate student of Ibaraki University, Hitachi, Ibaraki 316-8511 (Japan); Uno, M. [Graduate student of Ibaraki University, Hitachi, Ibaraki 316-8511 (Japan); Moriai, A. [Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1196 (Japan); Minakawa, N. [Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1196 (Japan); Morii, Y. [Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1196 (Japan)

2005-01-10

105

Defects in Carbon-Rich Ferrite of Cold-Drawn Pearlitic Steel Wires  

NASA Astrophysics Data System (ADS)

By means of X-ray line profile analysis and positron lifetime spectroscopy, densities of deformation-induced defects in carbon-rich ferrite of a series of cold-drawn pearlitic steel wires with true strains (?) up to 5 are characterized. It is shown that both the dislocation densities and the vacancy cluster concentrations increase continuously with increasing ?. On the basis of the measured defect densities, values of defect hardening are estimated. The result shows that contributions of the defect hardening to the total tensile strength of the wires reach nearly 40 pct, which is mainly ascribed to the dislocation hardening. Chemical surroundings of the defects in the carbon-rich ferrite are investigated by coincidence Doppler broadening spectroscopy. The association of carbon with the defects in ferrite is demonstrated.

Chen, Y. Z.; Csiszár, G.; Cizek, J.; Westerkamp, S.; Borchers, C.; Ungár, T.; Goto, S.; Liu, F.; Kirchheim, R.

2013-08-01

106

Feasibility demonstration of using wire electrical-discharge machining, abrasive flow honing, and laser spot welding to manufacture high-precision triangular-pitch Zircaloy4 fuel-rod-support grids  

Microsoft Academic Search

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

Horwood

1982-01-01

107

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

NASA Astrophysics Data System (ADS)

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.

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

2013-04-01

108

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

Federal Register 2010, 2011, 2012, 2013

...characteristics of the merchandise. Our preliminary analysis indicated that other physical characteristics, such as tensile strength, ductility, and chemical content (which determines product grade), do not vary by diameter. In addition,...

2012-10-01

109

Investigation of cylindrical wire electrical discharge turning (CWEDT) of AISI D3 tool steel based on statistical analysis  

Microsoft Academic Search

In this work, a surface roughness (Ra), roundness and material removal rate (MRR) study on the cylindrical wire electrical discharge turning (CWEDT) has been carried out. The material chosen in this case was AISI D3 tool steel due to its growing range of applications in the field of manufacturing tools, dies and molds as punch, tapping, reaming and so on

Mohammad Jafar Haddad; Alireza Fadaei Tehrani

2008-01-01

110

Highly precise non-contact instrumentation for magnetic measurement of mechanical stress in low-carbon steel wires  

Microsoft Academic Search

The magnetoelastic properties of steel wires are used for measuring a mechanical load in tension. A microcomputer-controlled measuring instrument was designed. The dependence of magnetic behaviour on a previous state is eliminated by the suggested method of commutated measurement of amplitude permeability from saturation to the demagnetizing state. It was observed that the change of permeability with tension was linear

B. Kvasnica; P. Fabo

1996-01-01

111

Characterization of Gas Metal Arc Welding welds obtained with new high Cr-Mo ferritic stainless steel filler wires  

E-print Network

1 Characterization of Gas Metal Arc Welding welds obtained with new high Cr-Mo ferritic stainless for homogeneous welding, by Gas Metal Arc Welding (GMAW) process, of a modified AISI 444 ferritic stainless steel Several compositions of metal cored filler wire were manufactured to define the best welding conditions

Paris-Sud XI, Université de

112

Control rod cluster arrangement  

SciTech Connect

This patent describes a nuclear reactor including nuclear core which is cooled and moderated by light water, the nuclear core comprising a plurality of parallel arranged openings therethrough and interspersed among the fuel assemblies. A control rod cluster arrangement comprises load follow control rod cluster assemblies with each load follow control rod cluster assembly being adapted to slidingly fit within each of some of the fuel assemblies in the parallel arranged openings, the load follow control rod cluster assemblies each comprising a plurality of elongated parallel arranged rods attached to a single spider, and including a first group of rods and a second group of rods, the first group of rods and the second each consisting of a plurality of absorber rods. The first group of rods consist of absorber rods taken from the group consisting of B/sub 4/C, hafnium, or silver-indium-cadmium and the second group of rods consist of absorber rods each consisting of stainless steel, the first group of rods and the second group of rods each being integrally attached at all times to the single spider, the absorber rods of the second group of rods being dispersed throughout the control rod cluster assembly. The first group of rods have a first neutron capture cross section and the second group of rods have a second neutron capture cross section different from the first cross section.

Orr, W.L.; Doshi, P.K.; Mildrum, C.M.; Freeman, T.R.

1987-02-10

113

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

PubMed

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

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

2013-01-01

114

Calculated and measured normal state resistivity of 19-filament MgB2/Ti/Cu/stainless steel wire  

NASA Astrophysics Data System (ADS)

This work describes the resistivity evolution of filamentary MgB2/Ti/Cu/stainless steel wire under the influence of solid state interaction between individual elements of the composite. The experimental samples were heat treated at temperatures of 650-850?°C and the properties of the interface layers have been estimated on the basis of solid state growth of intermetallic compounds formed by diffusion. The corresponding composite resistivity along the longitudinal direction was calculated using a model represented by an equivalent parallel circuit of n resistors. The temperature dependence of the electrical resistivity was measured for the experimental sample, a specially prepared Cu/Ti couple, and all individual metallic components used in the sample, using a cryogen-free characterization system. Very good agreement between the calculated ?(T) dependences and the experimentally measured resistivity of 19-filament MgB2/Ti/Cu/stainless steel wire has been obtained.

Kopera, L.; Ková?, P.; Hušek, I.

2012-02-01

115

Research on an X-ray non-destructive testing system for conveyer belt with steel wire ropes  

Microsoft Academic Search

The thesis conducts a deep research on an X-ray non-destructive testing system for the conveyer belt with steel wire ropes, and proposes the detailed design program. By researching the image processing algorithm of the conveyer belt, the research realized the marginal check, joint elongation check and breakdown location. Meanwhile, a system software was developed by using the C#.NET programming design

Ye Chunqing; Miao Changyun

2010-01-01

116

Growth of ZnO Nanorods on Stainless Steel Wire Using Chemical Vapour Deposition and Their Photocatalytic Activity  

PubMed Central

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 Iuv/Ivis 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

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

2014-01-01

117

78 FR 8105 - Steel Wire Garment Hangers From the Socialist Republic of Vietnam: Antidumping Duty Order  

Federal Register 2010, 2011, 2012, 2013

...Wire Garment Hangers From the Socialist Republic of Vietnam: Antidumping Duty Order AGENCY: Import Administration...wire garment hangers from the Socialist Republic of Vietnam (``Vietnam''). DATES: Effective Date: February 5,...

2013-02-05

118

77 FR 73430 - Steel Wire Garment Hangers From the Socialist Republic of Vietnam: Preliminary Affirmative...  

Federal Register 2010, 2011, 2012, 2013

...Wire Garment Hangers From the Socialist Republic of Vietnam: Preliminary Affirmative Determination of Critical...wire garment hangers from the Socialist Republic of Vietnam (Vietnam) with the exception of imports from the Hamico...

2012-12-10

119

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

Federal Register 2010, 2011, 2012, 2013

...Wire Garment Hangers From the Socialist Republic of Vietnam: Preliminary Determination of Sales at Less Than...wire garment hangers from the Socialist Republic of Vietnam (``Vietnam'') are being, or are likely to be, sold in...

2012-08-02

120

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

Federal Register 2010, 2011, 2012, 2013

...the supplemental questionnaire, Silvery Dragon PC Steel Products Group Co., Ltd. (``Silvery Dragon Steel'') stated that it would not participate...preliminarily found that Tongda, Silvery Dragon Steel, and Tianjin Shengte were not...

2010-05-21

121

Highly precise non-contact instrumentation for magnetic measurement of mechanical stress in low-carbon steel wires  

NASA Astrophysics Data System (ADS)

The magnetoelastic properties of steel wires are used for measuring a mechanical load in tension. A microcomputer-controlled measuring instrument was designed. The dependence of magnetic behaviour on a previous state is eliminated by the suggested method of commutated measurement of amplitude permeability from saturation to the demagnetizing state. It was observed that the change of permeability with tension was linear during technical saturation of the specimen: low-carbon steel wire used in building industry. Temperature influenced the permeability curve and was found to be positive. The effect decreased with magnetizing field, but it increased under mechanical loading. The coefficient of relative change of permeability with both tension and temperature was compared. The resolution and the reproducibility of the method is described. The dispersion of magnetic properties of specimens has been shown to be less than 1.5% in the determination of resulting stress. Because of the internal stress of specimen evaluation this method allows one to measure the tension of loaded wire, especially in civil engineering applications.

Kvasnica, B.; Fabo, P.

1996-05-01

122

Effect of Stopper-Rod Misalignment on Fluid Flow in Continuous Casting of Steel  

NASA Astrophysics Data System (ADS)

Misalignment of metal-delivery systems can cause asymmetric fluid flow in the mold region of continuous casters, leading to abnormal surface turbulence, insufficient superheat transport to the meniscus, slag entrainment, inclusion entrapment, and other quality problems. This work investigates the effect of stopper-rod misalignment on nozzle and mold flow velocities in a conventional continuous casting process using both a water model and a computational model. Three stopper-rod configurations are studied (aligned, front misaligned by 2 mm, and left misaligned by 2 mm). The 3-D steady k- ? finite-volume model matched well with impeller probe measurements of both velocity and its fluctuations. Negligible asymmetry was found near the narrow faces. Asymmetry close to submerged entry nozzle is the main cause of vortex formation observed in all cases. The left-misaligned stopper-rod produces a shallower jet with a higher flow rate from the right port, leading to higher surface velocities on the right surface. This produced substantially more large vortices on the left side. The asymmetry produced by the nozzle length bore diameter ratio of ~21 in this work is consistent with the theoretical critical entrance length of ~24 for turbulent pipe flow.

Chaudhary, R.; Lee, Go-Gi; Thomas, B. G.; Cho, Seong-Mook; Kim, Seon-Hyo; Kwon, Oh-Duck

2011-04-01

123

Fracture strength for a high strength steel bridge cable wire with a surface crack  

Microsoft Academic Search

In this paper, the fracture strength of a cracked suspension bridge wire is determined based on linear elastic fracture mechanics (LEFM). The wire is 5mm in diameter, with an original ultimate strength of 1725MPa and ultimate elongation that ranges between 5.5% and 6%. The average value of 65.7MPam for the wire fracture toughness, KC, was recently evaluated by the author.

K. M. Mahmoud

2007-01-01

124

Sintered wire annode  

DOEpatents

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.

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

2007-12-25

125

77 FR 32930 - Certain Steel Wire Garment Hangers From the Socialist Republic of Vietnam: Preliminary...  

Federal Register 2010, 2011, 2012, 2013

...Wire Garment Hangers From the Socialist Republic of Vietnam: Preliminary Affirmative Countervailing Duty Determination...garment hangers) from the Socialist Republic of Vietnam (Vietnam). For information on the estimated subsidy...

2012-06-04

126

Mechanical properties of Fe -10Ni -7Mn martensitic steel subjected to severe plastic deformation via cold rolling and wire drawing  

NASA Astrophysics Data System (ADS)

Fe-Ni-Mn martensitic steels are one of the major groups of ultra-high strength steels that have good mechanical properties and ductility in as annealed condition but they suffer from severe inter-granular embitterment after aging. In this paper, the effect of heavy shaped cold rolling and wire drawing on the mechanical properties of Fe-Ni-Mn steel was investigated. This process could provide a large strain deformation in this alloy. The total strain was epsilon ~7. Aging behavior and tensile properties of Fe-10Ni-7Mn were studied after aging at 753 K. The results showed that the ultimate tensile strength and ductility after cold rolling, wire drawing and aging increased up to 2540 MPa and 7.1 %, respectively, while the conventional steels show a premature fracture stress of 830 MPa with about zero ductility after aging.

Ghasemi-Nanesa, H.; Nili-Ahmadabadi, M.; Shirazi, H.

2010-07-01

127

High transport critical current density obtained for powder-in-tube-processed MgB2 tapes and wires using stainless steel and Cu-Ni tubes  

Microsoft Academic Search

MgB2 tapes and wires were fabricated by the powder-in-tube method. Stainless steel and Cu-Ni tubes were used as sheath materials, and no heat treatment was applied. The tapes made of stainless steel showed transport critical current density Jc of about 10 000 A\\/cm2 at 4.2 K and 5 T. A high Jc of about 300 000 A\\/cm2 was obtained by

H. Kumakura; A. Matsumoto; H. Fujii; K. Togano

2001-01-01

128

76 FR 26696 - Certain Steel Threaded Rod From the People's Republic of China: Preliminary Results of the First...  

Federal Register 2010, 2011, 2012, 2013

...Threaded Rod From the People's Republic of China: Preliminary Results of the First Administrative...rod'') from the People's Republic of China (``PRC'') for the period of review...Threaded Rod from the People's Republic of China: Notice of Antidumping Duty Order,...

2011-05-09

129

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

Federal Register 2010, 2011, 2012, 2013

...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...

2013-11-05

130

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

Federal Register 2010, 2011, 2012, 2013

...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...

2011-10-28

131

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

NASA Astrophysics Data System (ADS)

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.

Miller, Stephanie L.; de Moor, Emmanuel

2014-08-01

132

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

PubMed

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

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

2013-02-15

133

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

Federal Register 2010, 2011, 2012, 2013

...Final''); and Hot-Rolled Lead and Bismuth Carbon Steel Products From Germany and...Circumvention Final, 68 FR 54888); and Lead and Bismuth from Germany and the UK, 64 FR at 40347...Prelim, 68 FR at 46575; and Lead and Bismuth from Germany and the UK, 64 FR at...

2011-05-10

134

Large diameter (45-80 mm) nested stainless steel wire arrays at the Z accelerator  

NASA Astrophysics Data System (ADS)

Experiments have been performed at the Z accelerator to elucidate the effects of initial load diameter on the radiated output of a 7keV wire array x-ray source. Nested wire arrays with initial outer diameters of 45-80mm were fielded, with the masses chosen to maintain a nominally constant coupling to the Z generator. The total radiated output decreased from ˜1.1MJ to <0.5MJ for the largest diameter arrays, while the >1keV and K-shell radiation decreased at both small and large diameters. The >1keV output peaked at ˜340kJ, while the K-shell yield peaked at ˜55kJ. The observed trends in radiated output and stagnated plasma parameters are consistent with a phenomenological K-shell scaling theory, and are reproduced in one-dimensional modeling, although multidimensional effects, such as, growth of the Rayleigh-Taylor instability, are observed in the experiments and appear to impact the stagnated plasma for the larger diameter arrays.

Coverdale, C. A.; Deeney, C.; LePell, P. D.; Jones, B.; Davis, J.; Clark, R. W.; Apruzese, J. P.; Thornhill, J. W.; Whitney, K. G.

2008-02-01

135

Fatigue Crack Growth Rate of Cable-Stayed Portion of Runyang Bridge: Part II – Steel Wire Crack Growth Due to Disproportionate Cable Tightening\\/Loosening and Traffic Loading  

Microsoft Academic Search

Having completed an investigation in Part I that deals with the fatigue crack growth in the cables of the Runyang cable-stayed\\u000a bridge based the design data for the cables, Part II of this work is concerned with the fatigue crack growth of the steel\\u000a wires being the constituents of the cables. The objective is not only to check the compatibility

G. C. Sih; X. S. Tang

136

78 FR 8107 - Certain Steel Wire Garment Hangers From the Socialist Republic of Vietnam: Countervailing Duty Order  

Federal Register 2010, 2011, 2012, 2013

...Wire Garment Hangers From the Socialist Republic of Vietnam: Countervailing Duty Order AGENCY: Import Administration...wire garment hangers from the Socialist Republic of Vietnam (Vietnam). DATES: Effective Date: February 5, 2013....

2013-02-05

137

77 FR 75980 - Steel Wire Garment Hangers From the Socialist Republic of Vietnam: Final Determination of Sales...  

Federal Register 2010, 2011, 2012, 2013

...Wire Garment Hangers From the Socialist Republic of Vietnam: Final Determination of Sales at Less Than Fair Value...wire garment hangers from the Socialist Republic of Vietnam (``Vietnam'').\\1\\ We invited interested parties to...

2012-12-26

138

Crossed-Wire Laser Microwelding of Pt-10 Pct Ir to 316 Low-Carbon Vacuum Melted Stainless Steel: Part I. Mechanism of Joint Formation  

NASA Astrophysics Data System (ADS)

The excellent biocompatibility and corrosion properties of Pt alloys and 316 low-carbon vacuum melted (LVM) stainless steel (SS) make them attractive for biomedical applications. With the increasing complexity of medical devices and in order to lower costs, the challenge of joining dissimilar materials arises. In this study, laser microwelding (LMW) of crossed Pt-10 pct Ir to 316 LVM SS wires was performed and the weldability of these materials was determined. The joint geometry, joining mechanism, joint breaking force (JBF), and fracture modes were investigated using optical microscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and microtensile testing. It was shown that the mechanisms of joint formation transitioned from (1) brazing, (2) a combination of brazing and fusion welding, and (3) fusion welding with increasing pulsed laser energy. The joints demonstrated various tensile failure modes including (1) interfacial failure below a peak power of 0.24 kW, (2) partial interfacial failure that propagated into the Pt-Ir wire, (3) failure in the Pt-Ir wire, and (4) failure in the SS wire due to porosity and severe undercutting caused by overwelding. During this study, the optimal laser peak power range was identified to produce joints with good joint geometry and 90 pct of the tensile strength of the Pt-10 pct Ir wire.

Zou, G. S.; Huang, Y. D.; Pequegnat, A.; Li, X. G.; Khan, M. I.; Zhou, Y.

2012-04-01

139

Fatigue resistance, debonding force, and failure type of fiber-reinforced composite, polyethylene ribbon-reinforced, and braided stainless steel wire lingual retainers in vitro  

PubMed Central

Objective To analyze the fatigue resistance, debonding force, and failure type of fiber-reinforced composite, polyethylene ribbon-reinforced, and braided stainless steel wire lingual retainers in vitro. Methods Roots of human mandibular central incisors were covered with silicone, mimicking the periodontal ligament, and embedded in polymethylmethacrylate. The specimens (N = 50), with two teeth each, were randomly divided into five groups (n = 10/group) according to the retainer materials: (1) Interlig (E-glass), (2) everStick Ortho (E-glass), (3) DentaPreg Splint (S2-glass), (4) Ribbond (polyethylene), and (5) Quad Cat wire (stainless steel). After the recommended adhesive procedures, the retainers were bonded to the teeth by using flowable composite resin (Tetric Flow). The teeth were subjected to 10,00,000 cyclic loads (8 Hz, 3 - 100 N, 45° angle, under 37 ± 3? water) at their incisoproximal contact, and debonding forces were measured with a universal testing machine (1 mm/min crosshead speed). Failure sites were examined under a stereomicroscope (×40 magnification). Data were analyzed by one-way analysis of variance. Results All the specimens survived the cyclic loading. Their mean debonding forces were not significantly different (p > 0.05). The DentaPreg Splint group (80%) showed the highest incidence of complete adhesive debonding, followed by the Interlig group (60%). The everStick Ortho group (80%) presented predominantly partial adhesive debonding. The Quad Cat wire group (50%) presented overlying composite detachment. Conclusions Cyclic loading did not cause debonding. The retainers presented similar debonding forces but different failure types. Braided stainless steel wire retainers presented the most repairable failure type. PMID:24015388

Foek, Dave Lie Sam; Ozcan, Mutlu

2013-01-01

140

Improvement of center segregation in high-carbon steel billets using soft reduction  

Microsoft Academic Search

Center segregation is the main reason for cup fracture of high-carbon wire rod during drawing. Therefore, to continuously produce cast billets with very low center segregation is an important objective. The soft reduction technology is considered to be an effective method to minimize center segregation. To elucidate the effect of soft reduction on the internal quality of high-carbon steel billets,

Wenjun Wang; Xianggang Hu; Linxin Ning; Raimund Bülte; Wolfgang Bleck

2006-01-01

141

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

SciTech Connect

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.

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

1997-05-01

142

Wire core reactor for NTP  

NASA Technical Reports Server (NTRS)

The development of the wire core system for Nuclear Thermal Propulsion (NTP) that took place from 1963 to 1965 is discussed. A wire core consists of a fuel wire with spacer wires. It's an annular flow core having a central control rod. There are actually four of these, with beryllium solid reflectors on both ends and all the way around. Much of the information on the concept is given in viewgraph form. Viewgraphs are presented on design details of the wire core, the engine design, engine weight vs. thrust, a technique used to fabricate the wire fuel element, and axial temperature distribution.

Harty, R. B.

1991-01-01

143

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

SciTech Connect

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.

Jones, Brent; Coverdale, Christine A.; Deeney, Christopher; Sinars, Daniel B.; Waisman, Eduardo M.; Cuneo, Michael E.; Ampleford, David J. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); LePell, P. David; Cochrane, Kyle R. [Ktech Corporation, Albuquerque, New Mexico 87123 (United States); Thornhill, J. Ward; Apruzese, J. P.; Dasgupta, Arati [Naval Research Laboratory, Washington, D.C. 20375 (United States); Whitney, Kenneth G.; Clark, Robert W. [Berkeley Scholars, Springfield, Virginia 22150 (United States); Chittenden, Jeremy P. [Blackett Laboratory, Imperial College, London, SW7 2BW (United Kingdom)

2008-12-15

144

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

NASA Astrophysics Data System (ADS)

Nested stainless steel wire array variations were investigated on the 20MA Z machine [R. B. Spielman et al., Phys. Plasmas 5, 2105 (1998)]. In order to reach experimentally observed electron temperatures near 3.8keV and excite the K shell, these ˜6.7keV photon energy x-ray sources must be of large initial diameter (45-80mm) 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.

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.

2008-12-01

145

On the Thermal Contact Resistance Effects in Aluminum-Galvanized Steel Wires OPGW Submitted to a Short-Circuit Test  

Microsoft Academic Search

The heat transfer during the short-circuit test of an OPGW manufactured with aluminum tube and galvanized wires, has been investigated by many authors. In spite of the fact the temperature gradient in the aluminum wires can be neglected, it is shown in this paper the temperature gradient have a significant effect on the cooling of the aluminum tube. The present

Sergio Colle; Marcelo de Araújo Andrade

146

Effects of welding wire composition and welding process on the weld metal toughness of submerged arc welded pipeline steel  

Microsoft Academic Search

The effects of alloying elements in welding wires and submerged arc welding process on the microstructures and low-temperature impact toughness of weld metals have been investigated. The results indicate that the optimal contents of alloying elements in welding wires can improve the low-temperature impact toughness of weld metals because the proeutectoid ferrite and bainite formations can be suppressed, and the

De-liang Ren; Fu-ren Xiao; Peng Tian; Xu Wang; Bo Liao

2009-01-01

147

Analysis & Optimization of Connecting Rod  

Microsoft Academic Search

The main objective of this study was to explore weight reduction opportunities for a production forged steel connecting rod. This has entailed performing a detailed load analysis. Therefore, this study has dealt with two subjects, first, static load stress analysis of the connecting rod, and second, optimization for weight. In this project, finite element analysis of single cylinder four stroke

Pranav G. Charkha; Santosh B. Jaju

2009-01-01

148

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

Federal Register 2010, 2011, 2012, 2013

...PRC containing more than 1.25 percent chromium, are circumventing the Steel Threaded...contends that Gem-Year's higher-chromium DA bolts are of the same class or kind...and the addition of small amounts of chromium above the 1.25 percent threshold...

2012-01-05

149

Thermomechanical processing and mechanical properties of hypereutectoid steels and cast irons  

SciTech Connect

Recent advances in metallurgy of hypereutectoid steels and cast irons show that unique properties, such ultrahigh hardness and strength, and superplasticity, are achievable. This book focuses on the mechanical properties of hypereutectoid steels and cast irons as influenced by thermomechanical processing and microstructure. Some topics covered are: (1) Hot workability of hypereutectoid tool steels; (2) Thermomechanical processing of austempered ductile iron: An overview; (3) Mechanical behavior of ultrahigh strength, ultrahigh carbon steel wire and rod; and (4) Tensile elongation behavior of fine-grained Fe-C alloys at elevated temperatures.

Lesuer, D.R.; Syn, C.K.; Sherby, O.D. (eds.)

1998-01-01

150

Rapid electrothermal treatment of wire  

Microsoft Academic Search

1.The RETT method can be used for treating low-carbon steels used in manufacturing round cable wire of moderate strength sb = 160–180 kgf\\/mm2, shaped cable wire of large size (Z6, Z5) with a strength of 120–130 kgf\\/mm2, and reinforcing bars sb = 100–110 kgf\\/mm2.2.The REP method can be used for manufacturing cable or spring wire of medium-carbon steels with a

Yu. Ya. Meshkov; N. F. Chernenko

1977-01-01

151

Analysis of Radiation from Implosions of Stainless Steel Wire Arrays on Zebra and Comparison with Laser Plasma Experiments on Leopard at UNR*.  

NASA Astrophysics Data System (ADS)

The implosions of Stainless Steel (SS) Wire Arrays are extensively studied at SNL and also have applications in astrophysics. The analysis of radiation from low-number-wire SS Single and Nested Cylindrical, and Planar Wire Array experiments on the 1 MA Zebra is presented. The major focus is on x-ray imaging and spectra, total radiation yields, and fast, filtered x-ray detector data. The results of Leopard laser experiments with a flat 25 ?m Fe target in the nanosecond (ns) and 350 femtosecond (fs) pulse regimes are discussed and compared with Z-pinch data. This comparison focuses mainly on L-shell Fe radiation and provides an excellent benchmark to the Z-pinch results. Good agreement with laser data is demonstrated in the ns regime, but a substantial difference is observed for the fs pulse. * This work was supported by NNSA under DOE Coop. Agreements DE-FC52-06NA27588, 27586, and 27616. SNL is a multi-program laboratory managed and operated by Sandia Corp., a wholly owned subsidiary of Lockheed Martin Co., for the U.S. DOE under Contract DE-AC04-94AL85000.

Safronova, A. S.; Kantsyrev, V. L.; Shrestha, I.; Shlyaptseva, V. V.; Weller, M. E.; Osborne, G. C.; Williamson, K. M.; Stafford, A.; Keim, S. F.; Faenov, A. Ya.; Esaulov, A. A.; Wiewior, P.; Legalloudec, N.; Paudel, Y.; Coverdale, C. A.; Chuvatin, A. S.

2011-11-01

152

Rod Ratios  

NSDL National Science Digital Library

This activity builds student knowledge of ratios by using Cuisenaire rods to determine proportion and form equivalent ratios. Students may use the Cuisenaire rod environment embedded in this resource or they may use actual Cuisenaire rods depending on preference/ability/accessibility. This resource includes teacher notes, solution, and suggestions for questioning.

Team, Nrich

2013-01-01

154

Stiffness Corrections for the Vibration Frequency of a Stretched Wire  

ERIC Educational Resources Information Center

Discusses the need of introducing corrections due to wire stiffness arising from end constraints and wire axis distribution curvature in the measurement of ac electrical frequency by exciting transverse standing waves in a stretched steel wire. (SL)

Hornung, H. G.; Durie, M. J.

1977-01-01

155

Experimental investigation on ductile stable crack growth emanating from wire-cut notch in AISI 4340 steel  

Microsoft Academic Search

An experimental investigation on the stable crack growth (SCG) behaviour in AISI 4340 using CT type specimen with a sharp slit (0.05mm) under mode I and mixed modes (I and II) loading is presented. The slit was made in the specimen through wire cutting technique. Different combinations of loading angle ? and ratio of original crack length to specimen width

A. H. I. Mourad; M. J. Alghafri; O. A. Abu Zeid; S. K. Maiti

2005-01-01

156

The evaluation of corrosion resistant rod end rolling element bearings  

SciTech Connect

Recent developments on carburizing grades of stainless steels have provided new materials to produce corrosion resistant airframe control bearings. This paper presents the application of one of these new carburizing grades of stainless steel to rod end ball bearings. The outer ring of the rod end bearing is made out of carburized stainless steel, while the inner ring and balls are made out of through-hardened stainless steel. The stainless steel rod end bearings were evaluated according to various ASTM and Military specifications for performance and corrosion resistance. The stainless steel rod end bearings exceeded the performance requirements of standard rod end bearings (which are comprised of a carburized 8620 steel outer ring and 52100 steel inner ring and balls) in accordance with MIL-B-6039. The rod end bearings were evaluated in the radial fracture load, axial fracture load, and radial dynamic load tests. Also, salt spray and alternate immersion corrosion tests (ASTM B 117-85 and G 44-88, respectively) were conducted on the stainless steel rod end bearings. The stainless steel rod end bearings exhibited superior corrosion resistance to the standard 8620/52100 steel rod end bearings.

Braza, J.F.; Giuntoli, K.; Imundo, J.R. [Torrington Co., CT (United States)

1998-12-31

157

Vanishing Rods  

NSDL National Science Digital Library

This is a quick activity/demonstration that introduces learners to the concept of index of refraction. Learners place stirring rods in a jar of water and notice they can see them clearly. They will be surprised when they place the stirring rods in a jar of vegetable oil and the rods appear practically invisible! This is a dramatic demonstration that effectively illustrates how light can bend and fool the eye.

University, Colorado S.

2009-01-01

158

Performance of temporary epicardial stainless steel wire electrodes used to treat atrial fibrillation: a study in patients following open heart surgery.  

PubMed

AF is the most common arrhythmia following open heart surgery. Transthoracic cardioversion is used when pharmacological treatment fails to restore SR, or is ineffective in controlling ventricular response rate. We report on the performance of temporary atrial defibrillation wire electrodes implanted on the epicardium of patients undergoing open heart surgery. Epicardial stainless steel wire electrodes for both pacing/sensing and atrial defibrillation were placed at the left and right atrium during open heart surgery in 100 consecutive patients (age 65 +/- 9 years; male/female 77/23). Electrophysiological studies performed postoperatively revealed a test shock (0.3 J) impedance of 96 +/- 12 omega (monophasic) and 97 +/- 13 omega (biphasic). AF was induced by burst stimulation in 84 patients. All patients were successfully converted to SR. The mean energy of successful shocks was 3.1 +/- 1.9 J. Atrial pacing and sensing were accomplished in all patients. Pacing threshold was 1.9 +/- 1.7 V (0.5 ms) in the left atrium and 2.1 +/- 2 V in the right atrium. P wave sensing was 2.5 +/- 1.6 mV in the left atrium and 2.3 +/- 1.4 mV in the right atrium. No complications were observed with shock application, nor with lead extraction. Atrial defibrillation using temporary epicardial wire electrodes can be performed successfully and safely in patients following cardiac operations. The shock energy required to restore SR is low. Electrical cardioversion in the absence of anesthesia should be feasible. PMID:10087546

Liebold, A; Rödig, G; Birnbaum, D E

1999-02-01

159

High-frequency ultrasonic wire bonding systems  

PubMed

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

Tsujino; Yoshihara; Sano; Ihara

2000-03-01

160

Method for making a hot wire anemometer and product thereof  

NASA Technical Reports Server (NTRS)

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.

Milkulla, V. (inventor)

1977-01-01

161

Rodding Surgery  

MedlinePLUS

... may be rodded to reduce a scoliosis. With modern anesthesia, children can undergo surgery for longer periods ... recovery. Your doctor or physical therapist can suggest techniques for reducing their pain and frequency. For more ...

162

In Vivo Evaluation of the Effects of Gravitational Force (+Gz) on Over-the-Wire Stainless Steel Greenfield Inferior VenaCava Filter in Swine  

SciTech Connect

This study was done to determine the effect of exposure to gravitational force (acceleration stress) on invivo over-the-wire stainless steel Greenfield inferior vena cavafilters. Fifteen pigs underwent venous cut down and placement of a stainless steel Greenfield filter. A 4-week observation period simulated realistic convalescence and allowed sufficient time for epithelialization. Ten pigs were exposed to acceleration stress in a centrifuge (3G run for 15 sec followed by rest until return to baseline heart rate, then a 9G run for 15 sec), with inertial loading in ahead-to-tail direction (+Gz). Fluoroscopy during acceleration stress allowed assessment for filter migration. Five pigs were not exposed to acceleration stress. AP and lateral abdominal radiographs were obtained at post-filter placement, convalescence, and centrifuge exposure to determine the position and integrity of the filter. All 15 IVCs were resected and evaluated for gross or histological injury to the vessel wall. IVC filter placement was technically successful in all 15 pigs.Radiographic measurements were limited secondary to differences in pig positioning. Fluoroscopy showed no filter migration. All filters were securely attached to the vena cava by the hooks without gross evidence of perforation or hemorrhage. There were varying degrees of fibroplasia involving the hooks and tip of the filters in both the control and experimental groups. Histologically, there was evidence of prior hemorrhage at the level of the hooks, which was similar between the control and experimental groups. It is concluded that Greenfield filter position and vena caval integrity at the implantation site is unaffected by high acceleration stress.

Sherman, P.M., E-mail: Paul.Sherman@USAFA90.com; Soares, G.M. [WilfordHall Medical Center, 2200 Bergquist Drive, Ste 1, Lackland AFB, TX 78236-5300, Department of Radiology (United States); Dick, E.J.; Harroff, H.H. [ClinicalResearch Squadron, 59CRES/MSRO, 1225 Wilford Hall Loop, LacklandAFB, TX 78236 (United States); Werchan, P.M. [AirForce Research Laboratory, AFRL/HEPM, 2504 Gillingham Drive, Ste25, Brooks AFB, TX 78235-5104 (United States); Davis, M.R.; Ortegon, D.P. [WilfordHall Medical Center, 2200 Bergquist Drive, Ste 1, Lackland AFB, TX 78236-5300, Department of General Surgery (United States)

2003-08-15

163

Basic Wiring.  

ERIC Educational Resources Information Center

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;…

Kaltwasser, Stan; And Others

164

Rod Has High Tensile Strength And Low Thermal Expansion  

NASA Technical Reports Server (NTRS)

Thoriated tungsten extension rod fabricated to replace stainless-steel extension rod attached to linear variable-differential transformer in gap-measuring gauge. Threads formed on end of rod by machining with special fixtures and carefully chosen combination of speeds and feeds.

Smith, D. E.; Everton, R. L.; Howe, E.; O'Malley, M.

1996-01-01

165

SCT Busy Flow Individual ROD  

E-print Network

SCT Busy Flow BUSY Module LTP 1 (wire-or) Crate 1-1 Crate 1-2 O/C TTL O/C TTL NIM 16 Individual ROD Module Out NIM O/C TTL CTP Link Global ATLAS Signals & Overall SCT Busy LVDS LVDS LTP 2 O/C TTL NIM NIM LVDS LTP 3 Local Busy O/C TTL NIM NIM LVDS in out LTP 4 O/C TTL NIM NIM LVDS Local Busyin out Local

University College London

166

LOFT experimental support branch data abstract report: LOFT fuel rod thermocouple calibration test rod-RRF-A-8879  

Microsoft Academic Search

This report presents the comparison between LOFT type thermocouples (surface mounted) and embedded thermocouples placed in comparable locations on a stainless steel clad electrically heated rod. The experiments performed on this rod simulated a hot leg break loss-of-coolant accident (LOCA) with the rods at a medium steady state power level. The maximum steady state linear heat generation rate (MLHGR) at

C. W. Solbrig; E. L. Tolman; H. S. Selcho

1979-01-01

167

LOFT experimental support branch data abstract report: LOFT fuel rod thermocouple calibration test rod RRF-A-88102  

Microsoft Academic Search

This report presents the comparison between LOFT type thermocouples (surface mounted) and embedded thermocouples placed in comparable locations on stainless steel clad electrically heated rod. The experiments performed on this rod simulated a hot leg break loss-of-coolant accident (LOCA) with the rods at a high steady state power level. The maximum steady state linear heat generation rate (MLHGR) was 19

C. W. Solbrig; E. L. Tolman; H. S. Selcho

1979-01-01

168

Nano-structured polyaniline-ionic liquid composite film coated steel wire for headspace solid-phase microextraction of organochlorine pesticides in water.  

PubMed

A novel nano-structured polyaniline-ionic liquid (i.e. 1-butyl-3-methylimidazolium hexafluorophosphate, BMIPF(6)) composite (BPAN) film coated steel wire was prepared by electrochemical deposition. Scanning electron microscopy images showed that the obtained porous BPAN coating consisted of nanofibers, whose diameter ranged from 50 to 80 nm. Furthermore, the novel nano-structured composite coating was very stable at relatively high temperatures (up to 350 °C) and it could be used for more 250 times without obvious decrease of the extraction efficiency. The novel BPAN coating was used for the headspace solid-phase microextraction (HS-SPME) of organochlorine pesticides (i.e. hexachlorocyolohexane, dichlorodiphenyldichloroethylene, dichlorodiphenyldichloroethane, dichlorodiphenyltrichloroethane), coupled with gas chromatography-electron capture detection (GC-ECD). The BPAN coating showed better analytical capability on the whole compared with common polyaniline (PANI) and polydimethylsiloxane (PDMS) coatings. The key parameters influencing extraction efficiency were investigated and optimized, including desorption time, stirring speed, extraction temperature, extraction time and ionic strength. The relative standard deviations (RSDs) for single fiber repeatability ranged from 2.3 to 8.7% (n=6) and the RSDs for fiber-to-fiber reproducibility (n=6) were 4.2-12.1%, respectively. The linear ranges exceeded three magnitudes with correlation coefficients above 0.99. The detection limits were 0.12-0.31 ng L(-1). The proposed method was successfully applied for the determination of organochlorine pesticides in lake water, waste water and sewage treatment plant effluent with good recoveries from 88.9 to 112.9%. PMID:21821255

Gao, Zhanqi; Li, Wenchao; Liu, Benzhi; Liang, Feng; He, Huan; Yang, Shaogui; Sun, Cheng

2011-09-16

169

Method of preparing composite superconducting wire  

DOEpatents

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.

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

170

THE DEVELOPMENT OF MATERIALS FOR APPLICATION TO CONTROL ROD SYSTEMS IN GRAPHITE-MODERATED REACTORS  

Microsoft Academic Search

Test and fabrication experience with control m terials for graphite ; moderated tube type reactors indicated that a wide variety of satisfactory rod ; designs are possible using either boron which is integral with the control rod ; sheath or BâC graphite and sintered BiC--aluminum within metallic rod ; sheaths. The control effectiveness of tubular boron stainless steel rods can

G. E. Wade; F. J. Kempf

1963-01-01

171

Method of producing high temperature superconductor wires  

SciTech Connect

This patent application discloses a process for producing a superconductor wire by: (a) coating the inner surface of a steel tube with a thin layer of silver metal; (b) packing the tube with high temperature superconductor ceramic (HTSC) powder; (c) sealing the tube; (d) cold working the tube to reduce its diameter; and (e) etching or dissolving away the steel tube to leave a superconductor wire comprising the silver metal coating that was on the inner surface of the steel tube as a thin silver metal sheath which encapsulates the HTSC powder. The superconductor wire can be further treated by sintering or oxygenating the HTSC powder.

Ferrando, W.A.; Divecha, A.P.; Kerr, J.

1992-01-01

172

Comminuting irradiated ferritic steel  

DOEpatents

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.

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

1985-01-01

173

Comminuting irradiated ferritic steel  

SciTech Connect

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.

Bauer, R. E.; Chin, B. A.; Straalsund, J. L.

1985-03-26

174

Stuck fuel rod capping sleeve  

DOEpatents

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

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

1988-01-01

175

Singing Rod  

NSDL National Science Digital Library

How can a solid metal rod be made to emit a high-pitched squeal? This material is part of a series of hands-on science activities designed to arouse student interest. Here students investigate the resonance and acoustic properties that result from stroking a solid aluminum bar and causing it to resonate. The activity includes a description, a list of science process skills and complex reasoning strategies being used, and a compilation of applicable K-12 national science education standards. Also provided are content topics, a list of necessary supplies, instructions, and presentation techniques. The content of the activity is explained, and assessment suggestions are provided.

Mid-continent Research for Education and Learning (McREL); Jacobs, Steve

2004-01-01

176

Control rod drive  

Microsoft Academic Search

A reactor core, one or more control rods, and a control rod drive are described for selectively inserting and withdrawing the one or more control rods into and from the reactor core, which consists of: a support structure secured beneath the reactor core; control rod positioning means supported by the support structure for movably supporting the control rod for movement

Hawke

1986-01-01

177

Wire chamber  

DOEpatents

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.

Atac, Muzaffer (Wheaton, IL)

1989-01-01

178

Computer simulations to study the effect of adiabatic heating on rod penetration  

SciTech Connect

We use computer simulations to help us understand the experimental observation that depleted uranium (DU) rods penetrate more steel than equal density tungsten alloy (WA) rods, and that this advantage depends on velocity and fineness ratio. Our simulations used thermal softening. Although the DU rods exhibit shear fracture instead, both phenomena result in a loss of hoop strength, and help to keep the projectile residue from interfering with the incoming rod. Our simulations show that rods of DU (or other alloy with strong thermal softening) penetrate more steel than rods of WA (for alloys with little thermal softening), and show velocity and fineness ratio dependencies that are in qualitative agreement with experiment.

Reaugh, J.E.

1993-08-01

179

Wire Wise.  

ERIC Educational Resources Information Center

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)

Swanquist, Barry

1998-01-01

180

Influence of AlB 2 compound on elimination of incoherent precipitation in artificial aging of wires drawn from redraw rod extruded from billets cast of alloy AA6101 by vertical direct chill casting  

Microsoft Academic Search

In this article, a processing method of high conductive (HC) and extra-high conductive (EHC) electrical wires from AA-6101 alloy to manufacture aerial non-composite, composite, and various types of OPGW conductors has been presented. In HV-transmission lines, the most important problem is optimisation between tensile strength of conductor material and electrical conductivity. Alloys AA-6101 and AA-6201 are the best 6xxx series

Sedat Karabay

2008-01-01

181

Stretching Wires  

NSDL National Science Digital Library

In this activity, learners determine the elastic and plastic properties of different types of metal wires. Learners discover that wires of the same gauge, but made of different metals, typically support different loads (masses) before going through the elastic to plastic transition. Learners also learn the difference between elastic deformation, which is recoverable after the load is removed, and plastic deformation, which is not recoverable. Note: one way to save time on this lab is to have different groups test different metals.

Urbana-Champaign, University O.

2013-01-04

182

Control rod displacement  

Microsoft Academic Search

This patent describes a nuclear reactor including a core, cylindrical control rods, a single support means supporting the control rods from their upper ends in spaced apart positions and movable for displacing the control rods in their longitudinal direction between a first end position in which the control rods are fully inserted into the core and a second end position

Nakazato

1987-01-01

183

Rod examination gauge  

SciTech Connect

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.

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

184

EVALUATION OF FAILED HOT GAS ISOSTATIC PRESSED FUEL RODS  

Microsoft Academic Search

S>Three gas pressure-bonded stainless steel-clad UOâ fuel rods ; were irradiated in the VBWR to a burnup of 316 Mwd\\/t, and then stored in the VBWR ; pool for five months. During examination, the fuel rods broke into several ; pieces. Evaluations were conducted to determine the cause of the failure. It is ; concluded that the failure was caused

C. J. Baroch; C. B. Boyer; S. W. Porembka

1963-01-01

185

21 CFR 888.3020 - Intramedullary fixation rod.  

...intramedullary fixation rod 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...

2014-04-01

186

21 CFR 888.3020 - Intramedullary fixation rod.  

Code of Federal Regulations, 2010 CFR

...intramedullary fixation rod 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...

2010-04-01

187

Method of producing high temperature superconductor wires  

Microsoft Academic Search

This patent application discloses a process for producing a superconductor wire by: (a) coating the inner surface of a steel tube with a thin layer of silver metal; (b) packing the tube with high temperature superconductor ceramic (HTSC) powder; (c) sealing the tube; (d) cold working the tube to reduce its diameter; and (e) etching or dissolving away the steel

W. A. Ferrando; A. P. Divecha; J. Kerr

1992-01-01

188

FATIGUE OF DEFORMED WELDED WIRE REINFORCEMENT  

Microsoft Academic Search

The use of welded wire reinforcement (WWR) as an alternative to traditional mild steel reinforcing bars has many advantages. WWR has a higher yield strength and higher quality control, and results in significantly lower construction labor costs. However, many designers are still reluctant to use WWR as an alternative to mild steel reinforcing bars, due to unavailability of fatigue design

Amgad Girgis; Jeremy Bowers; Maher K. Tadros

189

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

E-print Network

SS304L or SS316L. · However Stainless Steel 17-4 PH was used. ­ This stainless steel is martensitic-rod is in blue · Tie-rod is assumed to have the B-H properties of 1010 steel for these calculations. · The lower on a Surface Surrounding the Steel · The force from the Maxwell stress tensor is given by the following

McDonald, Kirk

190

Spectroscopic properties of colloidal indium phosphide quantum wires  

SciTech Connect

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.

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

191

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

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.

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

2011-07-20

192

Magnetic characterization of surface-hardened steel  

Microsoft Academic Search

Case depth measurements of surface-hardened steel parts are important for quality control. Here, the magnetic properties of two sets of carefully characterized 25-mm-diameter case-hardened steel rods were studied with the aim of developing new methods to evaluate the case depth nondestructively. Induction-hardened 4140 steel and carburized 8620 steel rods were studied. Each set contained control samples (heat-treated but not surface-hardened)

Chongxue Zhang; Nicola Bowler; Chester Lo

2009-01-01

193

Superconducting wires  

Microsoft Academic Search

The requirement of high critical current density has prompted extensive research on ceramic processing of high-T sub c superconductors. An overview of wire fabrication techniques and the limitations they impose on component design will be presented. The effects of processing on microstructure and critical current density will also be discussed. Particle alignment has been observed in extruded samples which is

M. T. Lanagan; R. B. Poeppel; J. P. Singh; D. I. Dossantos; J. K. Lumpp; J. T. Dusek; K. C. Goretta

1988-01-01

194

An electrode array study of electrochemical inhomogeneity of zinc in zinc\\/steel couple during galvanic corrosion  

Microsoft Academic Search

The local electrochemical properties of anodic metal within a zinc\\/steel couple immersed in seawater was studied via an electrode array composed of zinc and mild steel wire sensors. It showed that the potential and current density distribution of zinc wires were inhomogeneous, and the main anodic area moved from the zinc wires adjacent to the steel wires and even further

Da-Lei Zhang; Wei Wang; Yan Li

2010-01-01

195

Comparative study on corrosion behaviour of Nitinol and stainless steel orthodontic wires in simulated saliva solution in presence of fluoride ions.  

PubMed

Localized corrosion and effects of pre-passivation treatment of Nitinol and SS304 orthodontic wires in simulated saliva solution in the presence and absence of fluoride ions were investigated by means of potentiodynamic and potentiostatic polarisations. Results revealed that Nitinol does not show pitting corrosion in saliva solution however, SS304 shows pitting corrosion. Meanwhile fluoride ion has deteriorative effect on pitting corrosion of Nitinol, while its effect on SS304 was marginally constructive. Additionally, the presence of artificial crevice has no effect on corrosion behaviour in the presence of fluoride. Pre-passivation treatment has positive influence on pitting corrosion of both alloys in the presence of F(-) ions. PMID:23498236

Mirjalili, M; Momeni, M; Ebrahimi, N; Moayed, M H

2013-05-01

196

Effect of fluoride on friction between bracket and wire  

PubMed Central

Background: Friction is usually encountered during sliding technique for orthodontic space closure. This study aims to investigate the effect of fluoride on frictional resistance between stainless steel orthodontic brackets and steel and NiTi arch wires. Materials and Methods: A total of 144 standard 022 stainless steel brackets were used in this experimental study. 0.016 and 0.019 × 0.025 inch steel and NiTi arch wires were tested. The frictional resistance between wires and brackets immersed in the following three solutions were measured: Sultan fluoride gel containing 1.23% acidulated phosphate fluoride at pH 3.5 for 4 minutes, aquafresh mouth wash containing 0.05% sodium fluoride at pH of 5.1 for 1 minute twice a day for 8 weeks and physiologic serum (pH=7) as the control group. Static and dynamic frictional forces were measured using Testometric machine. Surface topography of wires and brackets was qualitatively assessed using electron microscopy. Three-way and two-way variance analysis and complementary Tuckey analysis were applied to compare the groups for any significant differences (P<0.05). Results: The average static and dynamic frictional forces for all bracket-wire combinations immersed in Sultan fluoride gel were higher than those immersed in NAF and control groups (P<0.001).The forces measured for rectangular wires were higher than round wires (P<0.001). Frictional resistance of 0.016 inch NiTi wire was more than that of the steel one but the difference between steel and NiTi 0.019 × 0.25 arch wires was not significant. Conclusion: Friction between steel brackets and nickel titanium and steel wires is affected by prophylactic agents containing high doses of fluoride and acidity. PMID:23372594

Alavi, Shiva; Farahi, Ali

2011-01-01

197

Flat Wire  

NASA Technical Reports Server (NTRS)

The N.Y. State Urban Development Corp., Amp Inc., and Western Electric Corp. are working with NASA to produce flat conductor electrical cable. Flat conductor electrical cable originally designed for spacecraft by the Marshall Space Flight Center, has been installed in a housing project. Because it is very thin the wire can be mounted on surfaces of walls and floors instead of inside of them. Installation costs reduced significantly due to single installation time.

1976-01-01

198

Dynamic buckling and fragmentation in brittle rods  

E-print Network

We present experiments on the dynamic buckling and fragmentation of slender rods axially impacted by a projectile. By combining the results of Saint-Venant and elastic beam theory, we derive a preferred wavelength lambda for the buckling instability, and experimentally verify the resulting scaling law for a range of materials including teflon, dry pasta, glass, and steel. For brittle materials, buckling leads to the fragmentation of the rod. Measured fragment length distributions show two clear peaks near lambda/2 and lambda/4. The non-monotonic nature of the distributions reflect the influence of the deterministic buckling process on the more random fragmentation processes.

J. R. Gladden; N. Z. Handzy; A. Belmonte; E. Villermaux

2004-10-25

199

Dynamic buckling and fragmentation in brittle rods.  

PubMed

We present experiments on the dynamic buckling and fragmentation of slender rods axially impacted by a projectile. By combining the results of Saint-Venant and elastic beam theory, we derive a preferred wavelength lambda for the buckling instability, and experimentally verify the resulting scaling law for a range of materials including teflon, dry pasta, glass, and steel. For brittle materials, buckling leads to the fragmentation of the rod. Measured fragment length distributions show two peaks near lambda/2 and lambda/4. The nonmonotonic nature of the distributions reflect the influence of the deterministic buckling process on the more random fragmentation processes. PMID:15698281

Gladden, J R; Handzy, N Z; Belmonte, A; Villermaux, E

2005-01-28

200

Selection of filler wire for and effect of auto tempering on the mechanical properties of dissimilar metal joint between 403 and 304L(N) stainless steels  

Microsoft Academic Search

Weldability of the dissimilar weld joint between austenitic 304L(N) stainless steel (SS) and martensitic 403 SS made by gas tungsten arc welding process using ERNiCr-3 filler metal has been studied. For this study, 12mm thick plates of these two materials were joined using a K-type weld groove joint, with the straight edge on the 403 SS side buttered using ERNiCr-3

C. R. Das; A. K. Bhaduri; G. Srinivasan; V. Shankar; S. Mathew

2009-01-01

201

Crippling Strength of Axially Loaded Rods  

NASA Technical Reports Server (NTRS)

A new empirical formula was developed that holds good for any length and any material of a rod, and agrees well with the results of extensive strength tests. To facilitate calculations, three tables are included, giving the crippling load for solid and hollow sectioned wooden rods of different thickness and length, as well as for steel tubes manufactured according to the standards of Army Air Services Inspection. Further, a graphical method of calculation of the breaking load is derived in which a single curve is employed for determination of the allowable fiber stress. Finally, the theory is discussed of the elastic curve for a rod subject to compression, according to which no deflection occurs, and the apparent contradiction of this conclusion by test results is attributed to the fact that the rods under test are not perfectly straight, or that the wall thickness and the material are not uniform. Under the assumption of an eccentric rod having a slight initial bend according to a sine curve, a simple formula for the deflection is derived, which shows a surprising agreement with test results. From this a further formula is derived for the determination of the allowable load on an eccentric rod. The resulting relations are made clearer by means of a graphical representation of the relation of the moments of the outer and inner forces to the deflection.

Natalis, FR

1921-01-01

202

75 FR 26199 - Stainless Steel Bar from India: Partial Rescission of Antidumping Duty Administrative Review  

Federal Register 2010, 2011, 2012, 2013

...February 1, 2010). On February 24, 2010, Venus Wire Industries Pvt. Ltd. requested an...Petitioners''), for a review of Venus Wire Industries Pvt. Ltd., Facor Steels...antidumping duty administrative review, covering Venus Wire Industries Pvt. Ltd/Precision...

2010-05-11

203

Applications of surface analysis in the wire industry  

NASA Astrophysics Data System (ADS)

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.

Stout, David A.

204

Pull rod assembly  

DOEpatents

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.

Cioletti, Olisse C. (Pittsburgh, PA)

1990-01-01

205

Development of a solid-phase microextraction fiber by chemical binding of polymeric ionic liquid on a silica coated stainless steel wire.  

PubMed

A novel approach was developed for the fabrication of solid-phase microextraction (SPME) fiber by coating stainless steel fiber with a polymeric ionic liquid (PIL) through covalent bond. The stainless steel fiber was sequentially coated with a gold film by replacement reaction between Fe and Au when immerged in chloroauric acid, assembled with a monolayer of 3-(mercaptopropyl) triethoxysilane on the gold layer through the Au-S bond, and coated with a silica layer by the hydrolysis and polycondensation reaction of the surface-bonded siloxane moieties and the active silicate solution. Then, 1-vinyl-3-(3-triethoxysilylpropyl)-4,5-dihydroimidazolium chloride ionic liquid was anchored on the silica layer by covalent bond, and the PIL film was further formed by free radical copolymerization between 1-vinyl-3-(3-triethoxysilylpropyl)-4,5-dihydroimidazdium and vinyl-substituted imidazolium with azobisisobutyronitrile (AIBN) as initiator. Parameters influencing the preparation of PIL fiber were optimized, and the developed SPME fiber has a coating thickness of ~20 ?m with good thermal stability and long lifetime. The performance of the PIL fiber was evaluated by analysis of polycyclic aromatic hydrocarbons (PAHs) in water samples. The developed PIL fiber showed good linearity between 0.5 and 20 ?g l(-1) with regression coefficient in the range of 0.963-0.999, detection limit ranging from 0.05 to 0.25 ?g l(-1), and relative standard deviation of 9.2-29% (n=7). This developed PIL fiber exhibited comparable analytical performance to commercial 7 ?m thickness PDMS fiber in the extraction of PAHs. The spiked recoveries for three real water samples at 0.5-5 ?g l(-1) levels were 49.6-111% for the PIL fiber and 40.8-103% for the commercial PDMS fiber. PMID:22340892

Pang, Long; Liu, Jing-Fu

2012-03-23

206

7 CFR 1755.506 - Aerial wire services.  

Code of Federal Regulations, 2013 CFR

...Not more than two conductors shall be connected...510. (n) The conductor of copper coated steel reinforced...negative battery) conductor of the pair, and...wires shall pass under electrical guys, power...

2013-01-01

207

7 CFR 1755.506 - Aerial wire services.  

...Not more than two conductors shall be connected...510. (n) The conductor of copper coated steel reinforced...negative battery) conductor of the pair, and...wires shall pass under electrical guys, power...

2014-01-01

208

Control rod position indication system  

SciTech Connect

An axial rod position determination system is described for a control rod in a nuclear reactor core, said system comprising: fixed incore detectors; analytical, on-line signature means for periodically creating a response signature database of expected detector response deviations for assumed rod positions from a reference detector response produced at the current rod position by said fixed incore detectors; and rod position determination means for continuously determining a moved rod position of the control rod by scanning the signature database for a signature match between the expected detector response deviations and current detector response deviations produced by said fixed incore detectors with the control rod at the moved rod position.

Impink, A.J. Jr.; Heibel, M.D.; Grobmyer, L.R.

1993-07-20

209

Calibration of rod position indicators  

Microsoft Academic Search

This patent describes a procedure for calibration of a rod position indicator in a nuclear reactor having movable control rods without total shutdown of the reactor. It comprises: noting that the indicated position of a rod differs from a demand position of the rod by an extent exceeding a predetermined error range, determining that the rod is actually within the

A. P. Ginsberg; J. P. Mooney

1991-01-01

210

Places Wire  

NSDL National Science Digital Library

Are you curious to learn more about cities? You'd do well to make a beeline for the Places Wire site, which offers a cornucopia of material on urban parks, public policy, architecture, planning, and other topics. In sum total, the site is a "curated feed of news and commentary on architecture, landscape and urbanism." The site has partnered with 20 different organizations to provide new content on a daily basis. Some of the recent articles that have found their way to the site include "9 Suggestions for Changing DC's Height Limit" and "The Demise of the Public Hearing." Visitors can also use the drop-down View tab to scroll through the last few hours or days, as the content is quite dynamic. One gem that should not be missed is the archived appearance of Frank Lloyd Wright as a guest on the 1950s television program "What's My Line?"

211

Resistance in a Wire  

NSDL National Science Digital Library

Learn about the physics of resistance in a wire. Change its resistivity, length, and area to see how they affect the wire's resistance. The sizes of the symbols in the equation change along with the diagram of a wire.

Simulations, Phet I.; Dubson, Michael; Adams, Wendy; Gratny, Mindy

2004-06-01

212

Experimental investigation of turbulent transport of momentum and energy in a heated rod bundle  

Microsoft Academic Search

Turbulent air flow in a central channel of heated 37-rod bundles with triangular array at two different pitch-to-diameter ratios (P\\/D=1.12 and P\\/D=1.06) was investigated. Measurements were performed with a hot-wire probe with x-wires and an additional temperature wire. Time mean velocities, time mean fluid temperatures, wall shear stresses and wall temperatures, turbulent quantities such as the turbulent kinetic energy, all

T Krauss; L Meyer

1998-01-01

213

Control rod velocity limiter  

Microsoft Academic Search

This patent describes a velocity control arrangement for a reciprocable, vertically oriented control rod for use in a nuclear reactor in a fluid medium, the control rod including a drive hub secured to and extending from one end therefrom. The control device comprises: a toroidally shaped control member spaced from and coaxially positioned around the hub and secured thereto by

J. E. Cearley; J. C. Carruth; R. C. Dixon; S. S. Spencer; J. A. Jr. Zuloaga

1986-01-01

214

HYDRAULIC CONTROL ROD ACTUATOR  

Microsoft Academic Search

An investigation was made of the conceptual feasibility and production ; of a prototype model of a Hydraulic Control Rod Drive Mechanism that utilizes ; primary reactor water as the hydraulic fluid and is sealed within the reactor ; pressure vessel. It is capable of controlling 2300-pound rods such as might be ; used in large pressurized-water reactors. By utilizing

R. B. Hussey; C. F. Cartledge

1963-01-01

215

Control rod housing alignment  

Microsoft Academic Search

This patent describes a process for measuring the vertical alignment between a hole in a core plate and the top of a corresponding control rod drive housing within a boiling water reactor. It comprises: providing an alignment apparatus. The alignment apparatus including a lower end for fitting to the top of the control rod drive housing; an upper end for

R. C. Dixon; G. A. Deaver; J. R. Punches; G. E. Singleton; J. G. Erbes; H. P. Offer

1990-01-01

216

Membrane separation cuts disposal costs for wire-products maker  

Microsoft Academic Search

To reduce disposal and maintenance costs associated with alkaline washing stations, a manufacturer of wire-welded products installed a membrane-separation wastewater treatment system. The Missouri-based company produces welded-wire products, such as shelves, closet conversions, wire baskets, display racks and coat hangers. The steel parts undergo an extensive cleaning process that consists of five spray-washing stages. An alkaline solution first washes oil

Nichele

1996-01-01

217

Diagnostic behavior of the Wire Arc Plasma spray process  

Microsoft Academic Search

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

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

1992-01-01

218

Fatigue failure of thin wire-electrodischarge-machined flexure hinges  

Microsoft Academic Search

This paper inquires into the exportability of the fatigue measurements made on standard test-specimen to wire electro- discharge machined flexures with thin cross sections (50 micrometers ). It describes the results of a set of fatigue measurements made on 66 circular flexible hinges machined in steel and bronze by wire electro-discharge machining. After reminding the fatigue theory and describing the

Simon Henein; Cedric Aymon; Stefano Bottinelli; Reymond Clavel

1999-01-01

219

A typical bicondylar fracture in which a wiring technique is used. The wire is led by a surgical needle to attach the fragments  

E-print Network

fixation Various for bone plates. 3 Compression of fracture site through use of a dynamic plate either) fractures. From Park and Lakes. 10 Intramedullary rods are used for internal fixation of long bone fractures1 FRACTURE FIXATION 1a A typical bicondylar fracture in which a wiring technique is used. The wire

Gefen, Amit

220

Properties and potential for application of steel reinforced polymer and steel reinforced grout composites  

Microsoft Academic Search

The paper introduces steel reinforced polymer (SRP) and steel reinforced grout (SRG) composites that are considered for application in civil engineering for bridge and concrete buildings upgrade. These composites consist of steel cords formed by interwoven steel wires embedded within a polymer resin or cementitious grout matrix. The properties of SRP are evaluated experimentally and compared to micromechanical equations to

X. Huang; V. Birman; A. Nanni; G. Tunis

2005-01-01

221

RMI Visits Marlin Wire & Lion Brothers  

NSDL National Science Digital Library

The Regional Manufacturing Institute (RMI) of Maryland visited two of Maryland's manufacturing companies. This video presents interviews with employees from Marlin Steel Wire Products and The Lion Brothers Company. In this informative seven minute recording they discuss the present and future for Next Generation Manufacturing.

2011-10-07

222

Process for producing fine and ultrafine filament superconductor wire  

DOEpatents

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.

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

1992-01-01

223

Process for producing fine and ultrafine filament superconductor wire  

DOEpatents

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.

Kanithi, H.C.

1992-02-18

224

Underwater electrical wire explosion  

Microsoft Academic Search

A brief review of the results obtained in recent research of underwater electrical wire explosions using microsecond and nanosecond generators is presented. It was shown that the increase in the rate of energy input into the exploding wire allows one to increase the wire temperature and amplitude of shock waves (SWs). Estimated energy deposition into Cu and Al wire material

Ya E. Krasik; A. Fedotov; D. Sheftman; S. Efimov; A. Sayapin; V. Tz Gurovich; D. Veksler; G. Bazalitski; S. Gleizer; A. Grinenko; V. I. Oreshkin

2010-01-01

225

Windows: Life after Wire.  

ERIC Educational Resources Information Center

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.…

Razwick, Jerry

2003-01-01

226

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

227

Investigation of elastic modes propagating in multi-wire helical waveguides  

E-print Network

steel multi-wire cables, which are widely employed in bridges (suspended, cable-stayed and prestressed and degradation due to corrosion and fatigue. The basic element of these cables is usually a seven-wire strandInvestigation of elastic modes propagating in multi-wire helical waveguides Fabien Treyss

Paris-Sud XI, Université de

228

Control rod driveline and grapple  

DOEpatents

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.

Germer, John H. (San Jose, CA)

1987-01-01

229

Control rod calibration including the rod coupling effect  

Microsoft Academic Search

In a reactor containing more than one control rod, which includes all reactors licensed in the United States, there will be a 'coupling' or 'shadowing' of control rod flux at the location of a control rod as a result of the flux depression caused by another control rod. It was decided to investigate this phenomenon further, and eventually to put

R. Szilard; G. W. Nelson

1984-01-01

230

Behavior of exploding wires  

Microsoft Academic Search

Summary form only given. Exploding wire is performed by rapidly heating the wire to vaporization temperature with a high current pulse flowing through the wire. Exploding wires have found many applications among which are the opening switches named fuses in the circuits for inductive energy storage, the discharge loads of X-pinch or Z-pinches, namely wire array Z-pinches, and the production

Z. G. Mao; X. B. Zou; X. X. Wang; W. H. Jiang

2009-01-01

231

Stretched Wire Mechanics  

SciTech Connect

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.

Bowden, Gordon; /SLAC

2005-09-06

232

Spring loaded beaded cable makes efficient wire puller  

NASA Technical Reports Server (NTRS)

An efficient wire puller consists of a steel probe with a hole in one end fastened to a steel cable which is strung with metal beads compressed by spring loaded ferrules. This device allows cables to be pulled or forced around bends and elbows in pipes or tubes.

1965-01-01

233

Simulation of nuclear fuel rods by electrically heated rods  

Microsoft Academic Search

For the investigation of thermohydraulic behavior during loss-of-coolant accidents (LOCAs), the nuclear fuel rods are simulated, in out-of-pile experiments, by electrically heated rods. These heater rods are required to produce temperature and heat flux histories at each position of the heater rod surface, identical to those of the nuclear fuel rods. Generally, these requirements are approximated by preprogramming of the

S. Malang; K. Rust

1982-01-01

234

Evaluation of Organic Coolants for the Transportation of LMFBR Spent Fuel Rods.  

National Technical Information Service (NTIS)

The physical and chemical processes that are likely to occur when sodium coated LMFBR spent fuel rods are submerged in various aromatic organic coolants was defined by means of immersion experiments carried out with sodium coated 304 stainless steel coupo...

C. Arnold

1978-01-01

235

Submerged arc fillet welds between mild steel and stainless steel  

Microsoft Academic Search

Submerged arc fillet welds between mild steel and Type 304 stainless steel, made with ER309L wire, may contain no ferrite and be at risk of hot cracking, or they may be sufficiently diluted that they transform to martensite with both hot cracking risk and low ductility. This situation is most prevalent when direct current electrode positive (DCEP) polarity is used

D. J. Kotecki; V. B. Rajan

1997-01-01

236

Control rod position indication system  

Microsoft Academic Search

An axial rod position determination system is described for a control rod in a nuclear reactor core, said system comprising: fixed incore detectors; analytical, on-line signature means for periodically creating a response signature database of expected detector response deviations for assumed rod positions from a reference detector response produced at the current rod position by said fixed incore detectors; and

A. J. Jr. Impink; M. D. Heibel; L. R. Grobmyer

1993-01-01

237

Reactor control rod timing system  

Microsoft Academic Search

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

Peter T. K

1982-01-01

238

Test plan for Enraf Series 854 level gauge wire testing  

SciTech Connect

An Enraf Series 854 level gauge was installed on tank 241-S-106 during the first week of June 1994. On August 11, 1994, the gauge`s stainless steel measuring wire broke. After examination and laboratory analysis, it was determined that the wire broke due to severe chloride ion corrosion. It is suspected that the chloride ion contamination came from the radiation induced breakdown of the polyvinyl chloride (PVC) riser liner. It is well documented that the breakdown of PVC due to radiation produces chloride containing compounds. This document provides a qualification test plan to remove and have analyzed the wire in all of the Enraf Series 854 that have been installed to date. These tests will confirm the presence or absence of chloride ions in the PVC liners and/or on the Enraf measuring wires installed in the tanks. This test will involve removing the 316 stainless steel wire drums from all of the existing Enraf Series 854 level gauges that have been installed. New 316 stainless steel wire drums shall be installed into the gauges and the gauges will be placed back into service. The wire that is removed from the gauges shall be sent to the 222-S Lab or the Pacific Northwest Laboratory (PNL) for analysis. Additional wire replacements will occur at intervals as determined necessary by the results of the laboratory analyses.

Barnes, G.A.

1994-09-15

239

Refraction control of acoustic waves in a square-rod-constructed tunable sonic crystal  

Microsoft Academic Search

A two-dimensional square-rod-based tunable sonic crystal was constructed by 1.6mm -wide steel square rods in air with a lattice constant of 2.5mm to operate in an ultrasonic regime. By means of simply rotating square rods, the scattering sections, corresponding to different geometric factors of the sonic crystal, have been changed to manipulate the refraction from positive to negative, and thus

Liang Feng; Xiao-Ping Liu; Ming-Hui Lu; Yan-Bin Chen; Yan-Feng Chen; Yi-Wei Mao; Jian Zi; Yong-Yuan Zhu; Shi-Ning Zhu; Nai-Ben Ming

2006-01-01

240

Rod Contributions to Color Perception: Linear with Rod Contrast  

PubMed Central

At mesopic light levels, an incremental change in rod activation causes changes in color appearance. In this study, we investigated how rod mediated changes in color perception varied as a function of the magnitude of the rod contrast. Rod-mediated changes in color appearance were assessed by matching them with cone-mediated color changes. A two-channel four-primary colorimeter allowed independent control of the rods and each of the L-, M- and S-cone photoreceptor types. At all light levels, rod contributions to inferred PC, KC and MC pathway mediated vision were linearly related to the rod incremental contrast. This linear relationship could be described by a model based on primate ganglion cell responses with the assumption that rod signals were conveyed via rod-cone gap junctions at mesopic light levels. PMID:18561973

Cao, Dingcai; Pokorny, Joel; Smith, Vivianne C.; Zele, Andrew J.

2008-01-01

241

Wire Test Grip Fixture  

NASA Technical Reports Server (NTRS)

Wire-testing issues, such as the gripping strains imposed on the wire, play a critical role in obtaining clean data. In a standard test frame fitted with flat wedge grips, the gripping action alone creates stresses on the wire specimen that cause the wire to fail at the grip location. A new test frame, which is outfitted with a vacuum chamber, negated the use of any conventional commercially available wire test fixtures, as only 7 in. (17.8 cm) existed between the grip faces. An innovative grip fixture was designed to test thin gauge wire for a variety of applications in an existing Instron test frame outfitted with a vacuum chamber.

Burke, Christopher S.

2011-01-01

242

Optimizing wire parameters in exploding wire arrays  

Microsoft Academic Search

Exploding wire arrays as fast switches are of interest for explosive pulsed power applications utilizing magnetic flux compression. This type of opening switch has proven effective in producing pulses of several hundred kilovolts into vacuum diode loads. The research presented here discusses an exploding wire array capable of producing single digit kilo- joules, 100 nanosecond pulses when driven by a

C. Davis; A. Neuber; J. Stephens; A. Young; J. Dickens; M. Kristiansen

2010-01-01

243

Thermocouple based control rod position indication system  

SciTech Connect

This patent describes a rod position determination method. It comprises: measuring core coolant inlet temperature; measuring core coolant assembly exit temperature associated with a control rod; determining enthalpy rise from the inlet and exit temperature and a reference for an assembly containing the rod; determining the rod position charge; and determining the rod position from the rod position change and a reference rod position.

Heibel, M.D.; Impink, A.J. Jr.; Grobmyer, L.R.

1990-05-22

244

A study of the regional load deflection rate of multiloop edgewise arch wire.  

PubMed

To quantify the unique mechanical properties of multiloop edgewise arch wire (MEAW), its load deflection rate (LDR) and the LDR of various arch wires in the individual interbracket span were measured and compared. The MEAW arch wires were made out of .016 x .022-inch Permachrome stainless steel wire with L-loops of 4 different sizes. Five samples of each size were prepared for the comparison against wires of plain stainless steel, TMA, and nickel-titanium (NiTi) wires, all of the same dimensions. Five specimens for each of the various wires were used to eliminate the possibility of change in the physical properties of wires caused by the stress from repeated measurement. The LDR was measured by using the Instron model 4466 at a crosshead speed of 1 mm/min and maximum deflection of 1.0 mm. The regional wire stiffness of MEAW was calculated from the LDR in the interbracket spans that were measured by the Instron. The findings were as follows: (1) The LDR of the L-loop of MEAW at an individual interbracket span rate was 1:7.54 of the plain stainless steel wire, 1:1.76 of the NiTi, and 1:2.72 of TMA. (2) The L-loop at an individual interbracket span showed much lower wire stiffness than the entire arch wire, and the value of the stiffness differed according to the region. PMID:11302585

Yang, W S; Kim, B H; Kim, Y H

2001-04-01

245

Cable Bundle Wire Derating  

NASA Technical Reports Server (NTRS)

The allowable operating currents of electrical wiring when used in the space vacuum environment is predominantly determined by the maximum operating temperature of the wire insulation. For Kapton insulated wire this value is 200 C. Guidelines provided in the Goddard Space Flight Center (GSFC) Preferred Parts List (PPL) limit the operating current of wire within vacuum to ensure the maximum insulation temperature is not exceeded. For 20 AWG wire, these operating parameters are: (1) 3.7 amps per wire; (2) bundle of 15 or more wires; (3) 70 C environment: and (4) vacuum of 10(exp -5) torr or less. To determine the behavior and temperature of electrical wire at different operating conditions, a thermal vacuum test was performed on a representative electrical harness of the Hubble Space Telescope (HST) power distribution system. This paper describes the test and the results.

Lundquist, Ray A.; Leidecker, Henning

1998-01-01

246

Cable Bundle Wire Derating  

NASA Technical Reports Server (NTRS)

The allowable operating currents of electrical wiring when used in the space vacuum environment is predominantly determined by the maximum operating temperature of the wire insulation. For Kapton insulated wire this value is 200 C. Guidelines provided in the Goddard Space Flight Center (GSFC) Preferred Parts List (PPL) limit the operating current of wire within vacuum to ensure the maximum insulation temperature is not exceeded. For 20 AWG wire, these operating parameters are: 3.7 amps per wire, bundle of 15 or more wires, 70 C environment, and vacuum of 10(exp -5) torr or less. To determine the behavior and temperature of electrical wire at different operating conditions, a thermal vacuum test was performed on a representative electrical harness of the Hubble Space Telescope (HST) power distribution system. This paper describes the test and the results.

Lundquist, Ray A.; Leidecker, Henning

1998-01-01

247

Wire harness twisting aid  

NASA Technical Reports Server (NTRS)

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.

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

1980-01-01

248

EMF wire code research  

SciTech Connect

This paper examines the results of previous wire code research to determines the relationship with childhood cancer, wire codes and electromagnetic fields. The paper suggests that, in the original Savitz study, biases toward producing a false positive association between high wire codes and childhood cancer were created by the selection procedure.

Jones, T.

1993-11-01

249

Wire-Identification Instrument  

NASA Technical Reports Server (NTRS)

Instrument automatically tests each wire in multiwire cable and identifies specified wire to be segregated or labeled and locates wire connected to specified connector pin. Instrument made with readily available CMOS integrated circuits. More efficient and reliable than conventional continuity testers and less expensive than computer controlled units.

Lonborg, J. O.

1985-01-01

250

77 FR 32562 - Circular Welded Carbon-Quality Steel Pipe From India: Preliminary Determination of Sales at Less...  

Federal Register 2010, 2011, 2012, 2013

...Negative Critical Circumstances: Carbon and Certain Alloy Steel Wire...Certain Polyester Staple Fiber From Korea: Final Results of...Duty Order; Certain Welded Carbon Steel Standard Pipes and Tubes...investigation covers welded carbon-quality steel pipes and...

2012-06-01

251

Control rod inspection experience  

Microsoft Academic Search

Full text: The Technical Specifications of the Kansas State University TRIGA Mk II Nuclear Reactor require, among other things, that the control rods be 'visually inspected' every two years for indication of significant distortion or deterioration. The 'visual inspection' presently consists of close-up photography of the poison section, measurement of the diameter of the cladding with a vernier caliper, weighing

McEwan; Michael J

1978-01-01

252

Control rod studies  

Microsoft Academic Search

This study was undertaken to answer questions asked regarding the required rod stroke for control of modified Tory II-C reactors. All problems described were solved with the Angie code and based on Tory-II-C design problems, RZ 501 and RZ 502, representing hot and cold reactors respectively.

1963-01-01

253

Noise Radiation from Single and Multiple Rod Configurations  

NASA Technical Reports Server (NTRS)

Acoustic measurements were performed on single and multiple rod configurations to study the effect of Reynolds number, surface roughness, freestream turbulence, proximity and wake interference on the radiated noise. The Reynolds number ranged from 3.8 x 10(exp 3) to 10(exp 5). Directivity measurements were performed to determine how well the dipole assumption for the radiation of vortex shedding noise holds for the different model configurations tested. The dependence of the peak Sound Pressure Level on velocity was also examined. Several concepts for the reduction of the noise radiating from cylindrical rods were tested. It was shown that wire wraps and collar distributions could be used to significantly reduce the noise radiating from rods in tandem configurations.

Hutcheson, Florence V.; Brooks, Thomas F.

2006-01-01

254

Broken wires diagnosis method numerical simulation based on smart cable structure  

NASA Astrophysics Data System (ADS)

The smart cable with embedded distributed fiber optical Bragg grating (FBG) sensors was chosen as the object to study a new diagnosis method about broken wires of the bridge cable. The diagnosis strategy based on cable force and stress distribution state of steel wires was put forward. By establishing the bridge-cable and cable-steel wires model, the broken wires sample database was simulated numerically. A method of the characterization cable state pattern which can both represent the degree and location of broken wires inside a cable was put forward. The training and predicting results of the sample database by the back propagation (BP) neural network showed that the proposed broken wires diagnosis method was feasible and expanded the broken wires diagnosis research area by using the smart cable which was used to be only representing cable force.

Li, Sheng; Zhou, Min; Yang, Yan

2014-12-01

255

Investigation of Carbon Wire X-pinch backlighting for Pulsed Power Driven Exploding Wire Experiments  

NASA Astrophysics Data System (ADS)

Exploding wire experiments have many important applications, including inertial confinement fusion research and laboratory astrophysical plasmas. Understanding of the dynamics of wire arrays is crucial to these applications. Details of wire ablation remain somewhat unclear, which lead to uncertainties in scaling to higher drive currents. The ablated coronal plasma is typically investigated using x-rays in the 3-5 keV range, however much of this plasma is highly transparent to this radiation, and information about the dynamics of coronal plasma above 10^19/cc is therefore lacking. A possible candidate for lower energy radiography is the carbon x-pinch, which produces x-rays below 1 keV. Experiments are conducted on GenASIS, a linear transformer driver, to study carbon x-pinches for wire array x-ray backlighting. This pulsed power system drives 250 kA into a short circuit and 200 kA into an x-pinch load. X-pinches formed from 20 ?m titanium and 10 ?m stainless steel wires are compared to the carbon system to provide more insight into the evolution and structure of exploding wires. Information from these comparisons will feed directly into the ongoing discussion of wire ablation at high currents.

McGraw, Sean; Bott, Simon; Beg, Farhat

2009-11-01

256

CONTROL RODS FOR NUCLEAR REACTORS  

Microsoft Academic Search

A means for controlling the control rod in emergency, when it is desired ; to shutdown the reactor with the shortest possible delay, is described. When the ; emergency occurs the control rod is allowed to drop freely under gravity from the ; control rod support tube into the bore in the reactor core. A normal shutdown is ; reached

Bell

1963-01-01

257

Hydraulic drive for control rods  

Microsoft Academic Search

A nuclear reactor is disclosed wherein hydraulic drive mechanisms for control rods are provided with a positive mechanical latching arrangement to maintain the control rods in a withdrawn position with respect to the core. With this arrangement, the coil of an associated electromagnet must be deliberately energized in order to insert the control rod into the core thus making accidental

E. Frisch; H. N. Andrews

1976-01-01

258

Endfire coupling of linearly polarized THz radiation to a metallic wire A. Edelmann, S. Helfert and J. Jahns  

E-print Network

Endfire coupling of linearly polarized THz radiation to a metallic wire A. Edelmann, S. Helfert and J. Jahns Metallic wires which consist, e.g., of stainless steel can provide waveguiding of THz radiation with low dispersion and low attenuation [1]. The coupling of a free space THz wave to the wire can

Jahns, Jürgen

259

Underwater electrical wire explosion  

NASA Astrophysics Data System (ADS)

A brief review of the results obtained in recent research of underwater electrical wire explosions using microsecond and nanosecond generators is presented. It was shown that the increase in the rate of energy input into the exploding wire allows one to increase the wire temperature and amplitude of shock waves (SWs). Estimated energy deposition into Cu and Al wire material of up to 200 eV/atom was achieved. In microsecond time scale wire explosion, a good agreement was attained between the wire resistance calculated using the equation of state (EOS) and that obtained experimentally. Conversely, in nanosecond time scale wire explosion, the wire resistance of EOS was modified in order to fit experimental data. Analysis of the emitted radiation showed that black body approximation cannot be used to characterize exploding wire radiation. It was found that <=24% of the deposited energy is transferred into the water flow's mechanical energy. Also, it was shown that converging SWs formed by the explosion of cylindrical wire arrays can be used to achieve a pressure up to 250 kbar at the axis of implosion. Hydrodynamic simulations showed that with the use of relatively moderate pulsed power generators with stored energy of several hundred kilojoules, a pressure of several megabar can be achieved at the axis of implosion.

Krasik, Ya E.; Fedotov, A.; Sheftman, D.; Efimov, S.; Sayapin, A.; Gurovich, V. Tz; Veksler, D.; Bazalitski, G.; Gleizer, S.; Grinenko, A.; Oreshkin, V. I.

2010-06-01

260

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

Code of Federal Regulations, 2012 CFR

...Trolley wires, trolley feeder wires, and bare signal wires shall be insulated adequately where they pass through...doors and stoppings, and where they cross other power wires and cables. Trolley wires and trolley feeder wires shall be guarded...

2012-07-01

261

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

Code of Federal Regulations, 2013 CFR

...Trolley wires, trolley feeder wires, and bare signal wires shall be insulated adequately where they pass through...doors and stoppings, and where they cross other power wires and cables. Trolley wires and trolley feeder wires shall be guarded...

2013-07-01

262

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

Code of Federal Regulations, 2010 CFR

...Trolley wires, trolley feeder wires, and bare signal wires shall be insulated adequately where they pass through...doors and stoppings, and where they cross other power wires and cables. Trolley wires and trolley feeder wires shall be guarded...

2010-07-01

263

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

Code of Federal Regulations, 2011 CFR

...Trolley wires, trolley feeder wires, and bare signal wires shall be insulated adequately where they pass through...doors and stoppings, and where they cross other power wires and cables. Trolley wires and trolley feeder wires shall be guarded...

2011-07-01

264

Laser Wire Deposition (WireFeed) for Fully Dense Shapes LDRD  

SciTech Connect

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.

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

265

Rod swap analysis using SIMULATE3  

Microsoft Academic Search

The rod swap method is often used to measure control rod worths during low-power physics testing for pressurized water reactors (PWRs). Rod swap can be more advantageous than the conventional control rod measurement technique of boration\\/dilution because it is less time consuming. Rod swap calculations, however, present a more difficult challenge to the core analysis engineer. Predictions of rod swap

A. S. DiGiovine; L. P. Elizondo

1989-01-01

266

Thermocouple based control rod position indication system  

Microsoft Academic Search

This patent describes a rod position determination method. It comprises: measuring core coolant inlet temperature; measuring core coolant assembly exit temperature associated with a control rod; determining enthalpy rise from the inlet and exit temperature and a reference for an assembly containing the rod; determining the rod position charge; and determining the rod position from the rod position change and

M. D. Heibel; A. J. Jr. Impink; L. R. Grobmyer

1990-01-01

267

Maximum\\/minimum asymmetric rod detection  

Microsoft Academic Search

This patent describes a system for determining the relative position of each control rod within a control rod group in a nuclear reactor. The control rod group having at least three control rods therein. It comprises: means for producing a signal representative of a position of each control rod within the control rod group in the nuclear reactor; means for

1990-01-01

268

Thin wire pointing method  

NASA Technical Reports Server (NTRS)

A method is described for forming sharp tips on thin wires, in particular phosphor bronze wires of diameters such as one-thousandth inch used to contact micron size Schottky barrier diodes, which enables close control of tip shape and which avoids the use of highly toxic solutions. The method includes dipping an end of a phosphor bronze wire into a dilute solution of sulfamic acid and applying a current through the wire to electrochemically etch it. The humidity in the room is controlled to a level of less than 50%, and the voltage applied between the wire and another electrode in the solutions is a half wave rectified voltage. The current through the wire is monitored, and the process is stopped when the current falls to a predetermined low level.

Green, G.; Mattauch, R. J. (inventors)

1983-01-01

269

Thin wire pointing method  

NASA Astrophysics Data System (ADS)

A method is described for forming sharp tips on thin wires, in particular phosphor bronze wires of diameters such as one-thousandth inch used to contact micron size Schottky barrier diodes, which enables close control of tip shape and which avoids the use of highly toxic solutions. The method includes dipping an end of a phosphor bronze wire into a dilute solution of sulfamic acid and applying a current through the wire to electrochemically etch it. The humidity in the room is controlled to a level of less than 50%, and the voltage applied between the wire and another electrode in the solutions is a half wave rectified voltage. The current through the wire is monitored, and the process is stopped when the current falls to a predetermined low level.

Green, G.; Mattauch, R. J.

1983-03-01

270

Experimental and computational studies of rod-deployment mechanisms  

SciTech Connect

We describe experimental measurements and hydrocode simulations of two tests in which long (L/D=12), steel rods were accelerated laterally with charges of Detasheet-C high explosive (HE). In each test configuration, 84 rods were initially aligned parallel to one another in an array of four concentric rings. The first test had a central core of HE that dispersed the rods isotropically. The second test had a narrow, 180 degree strip of HE on one side of the assembly that focused the rods directionally. Using radiographic data taken at several milliseconds after HE initiation, we measured the dynamic distributions of the rods, and their translational velocities and tumble rates. To compare with the data, we also modeled the experiments with our smooth particle hydrocode SPHINX. Within the context of our numerical model, the hydrocode results agree satisfactorily with the test data. We include in our discussion many of the inferences and insights that our results provide to the phenomenology and performance of multimode, rod-deployment mechanisms.

Schwalbe, L.A.; Wingate, C.A. [Los Alamos National Lab., NM (United States); Stofleth, J.H.; Greene, R.W.

1996-08-01

271

Zinc wired rebar  

SciTech Connect

A novel method for corrosion protection of rebar in concrete is reported wherein it is galvanically protected by attaching a zinc wire along its length. The self-corrosion and galvanic-corrosion loss of the zinc wire is dependent on the water/cement ratio, the size of the cathode, and the concrete cover thickness. The wire acts as a sacrificial anode when the rebar embedded in concrete is exposed to corrosive environments.

Zhang, X.G.; Hwang, J. [COMINCO Product Technology Centre, Mississauga, Ontario (Canada)

1997-02-01

272

Wire-inhomogeneity detector  

DOEpatents

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.

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

1982-08-31

273

Weld Wire Investigation Summary  

SciTech Connect

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).

Cunningham, M.A.

1999-03-22

274

Concealed wire tracing apparatus  

DOEpatents

An apparatus and method that combines a signal generator and a passive signal receiver to detect and record the path of partially or completely concealed electrical wiring without disturbing the concealing surface is disclosed. The signal generator applies a series of electrical pulses to the selected wiring of interest. The applied pulses create a magnetic field about the wiring that can be detected by a coil contained within the signal receiver. An audible output connected to the receiver and driven by the coil reflects the receivers position with respect to the wiring. The receivers audible signal is strongest when the receiver is directly above the wiring and the long axis of the receivers coil is parallel to the wiring. A marking means is mounted on the receiver to mark the location of the wiring as the receiver is directed over the wiring's concealing surface. Numerous marks made on various locations of the concealing surface will trace the path of the wiring of interest. 4 figs.

Kronberg, J.W.

1994-05-31

275

Influence of aspect ratio on the lowest states of quantum rods  

NASA Astrophysics Data System (ADS)

The lowest valence-band states of In0.53Ga0.47As quantum rods with infinite barriers are studied using a four-band Burt-Foreman model. Special emphasis is given to the study of quantum-rod shape dependency and consequences for the aspect ratio at the crossing of the lowest two states. The nonseparability of the problem leads to complex ground-state envelope function (and level crossing) and demonstrates the difference between (infinite) quantum-wire structures and finite quantum-rod structures. Finally, calculations are presented for In0.53Ga0.47As quantum-rod structures embedded in InP. It is found that the aspect ratio at crossing of the two lowest states depends on the quantum-rod radius with InP finite barriers.

Willatzen, M.; Lassen, B.; Melnik, R.; Lew Yan Voon, L. C.

2005-06-01

276

Growth control of ZnO nano-rod with various seeds and photovoltaic application  

NASA Astrophysics Data System (ADS)

ZnO has attracted much interesting as one of unique materials. Especially, it is suitable for the easy fabrication of nano-structures such as rod, wire and tube as well as particles. ZnO nano-rod is one of good sensitized electrodes because it has good electron transfer and is easily fabricated. In the chemical bath deposition process, seed layer plays an important role in the growth of nano-rod. This work investigated and analyzed the effect of seed layer on the growth of ZnO nano-rod. Fabricated nano-rods were applied to dye-sensitized solar cell. For better performance, ZnO was surface-modified by TiO2. Surface-modified ZnO had improved electron transfer and wider surface area. Consequently, the current and fill factor were much improved and overall performance was also enhanced with them.

Seo, Hyunwoong; Wang, Yuting; Uchida, Giichiro; Kamataki, Kunihiro; Itagaki, Naho; Koga, Kazunori; Shiratani, Masaharu

2013-06-01

277

Investigation of Corrosion of Steel by Lead Bismuth Eutectic Dan Koury (1), Allen L. Johnson (2), Dale L. Perry (3), and John W. Farley (1)  

E-print Network

(tube), and D-9 (tube) and one Russian steel EP823 rod)] were corrosion-tested. Los Alamos scientists corrosion. The Russians have 40 years of experience with LBE coolant loops in their Alpha-class nuclear scientists have reviewed these studies, in which several US steels [316 (tube), 316L (rod), T-410 (rod) HT-9

McDonald, Kirk

278

A tool for measuring the bending length in thin wires  

NASA Astrophysics Data System (ADS)

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.

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

2013-03-01

279

1998 wire development workshop proceedings  

SciTech Connect

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.

NONE

1998-04-01

280

Corrosion behavior of 2205 duplex stainless steel.  

PubMed

The corrosion of 2205 duplex stainless steel was compared with that of AISI type 316L stainless steel. The 2205 stainless steel is a potential orthodontic bracket material with low nickel content (4 to 6 wt%), whereas the 316L stainless steel (nickel content: 10 to 14 wt%) is a currently used bracket material. Both stainless steels were subjected to electrochemical and immersion (crevice) corrosion tests in 37 degrees C, 0.9 wt% sodium chloride solution. Electrochemical testing indicates that 2205 has a longer passivation range than 316L. The corrosion rate of 2205 was 0.416 MPY (milli-inch per year), whereas 316L exhibited 0.647 MPY. When 2205 was coupled to 316L with equal surface area ratio, the corrosion rate of 2205 reduced to 0.260 MPY, indicating that 316L stainless steel behaved like a sacrificial anode. When 316L is coupled with NiTi, TMA, or stainless steel arch wire and was subjected to the immersion corrosion test, it was found that 316L suffered from crevice corrosion. On the other hand, 2205 stainless steel did not show any localized crevice corrosion, although the surface of 2205 was covered with corrosion products, formed when coupled to NiTi and stainless steel wires. This study indicates that considering corrosion resistance, 2205 duplex stainless steel is an improved alternative to 316L for orthodontic bracket fabrication when used in conjunction with titanium, its alloys, or stainless steel arch wires. PMID:9228844

Platt, J A; Guzman, A; Zuccari, A; Thornburg, D W; Rhodes, B F; Oshida, Y; Moore, B K

1997-07-01

281

DT fusion neutron irradiation of BPNL niobium nickel and 316 stainless steel at 175°C  

Microsoft Academic Search

The DT fusion neutron irradiation at 175°C of 17 niobium wires, one niobium foil, 14 316 stainless steel wires, one 316 stainless steel foil, nine nickel wires, and two nickel foils from BPNL is described. The sample position, beam-on time, neutron dose record, and neutron fluence are given.

1977-01-01

282

Wire Array Photovoltaics  

NASA Astrophysics Data System (ADS)

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.

Turner-Evans, Dan

283

The Size of Ghost Rods  

E-print Network

'Ghost Rods' are periodic structures in a two-dimensional flow that have an effect on material lines that is similar to real stirring rods. An example is a periodic island: material lines exterior to it must wrap around such an island, because determinism forbids them from crossing through it. Hence, islands act as topological obstacles to material lines, just like physical rods, and lower bounds on the rate of stretching of material lines can be deduced from the motion of islands and rods. Here, we show that unstable periodic orbits can also act as ghost rods, as long as material lines can 'fold' around the orbit, which requires the orbit to be parabolic. We investigate the factors that determine the effective size of ghost rods, that is, the magnitude of their impact on material lines.

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

2005-10-29

284

Reactor control rod timing system  

DOEpatents

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.

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

1982-01-01

285

Fiber optic laser rod  

DOEpatents

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.

Erickson, G.F.

1988-04-13

286

WIRE Mishap Investigation Board Report  

E-print Network

Volume 1 WIRE Mishap Investigation Board Report June 8, 1999 #12;2 Table of Contents WIRE MISHAP........................................................................... 10 � WIRE Mishap Electronics Analysis: Failure Mechanism Determination.................... 17 � Summary of the Mishap

Rhoads, James

287

Making Highly Pure Glass Rods  

NASA Technical Reports Server (NTRS)

Proposed quasi-containerless method for making glass rods or fibers minimizes contact between processing equipment and product. Method allows greater range of product sizes and shapes than achieved in experiments on containerless processing. Molten zone established in polycrystalline rod. Furnace sections separated, and glass rod solidifies between them. Clamp supports solid glass as it grows in length. Pulling clamp rapidly away from melt draws glass fiber. Fiber diameter controlled by adjustment of pulling rate.

Naumann, R. J.

1986-01-01

288

Automatic safety rod for reactors  

DOEpatents

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.

Germer, John H. (San Jose, CA)

1988-01-01

289

Successful atrial defibrillation with very-low-energy shocks by means of temporary epicardial wire electrodes  

Microsoft Academic Search

Sustained atrial fibrillation is very common after cardiac surgical procedures. We hypothesized that atrial defibrillation could be accomplished consistently and safely by means of low-energy shocks delivered by temporary stainless steel wire electrodes placed at the time of the operation. Sterile pericarditis was created in five mongrel dogs (20.9 ± 2.1 kg), and pairs of standard temporary stainless steel wire

Brian L. Cmolik; Jose Ortiz; Gregory M. Ayers; Jai H. Lee; Alexander S. Geha; Albert L. Waldo

1996-01-01

290

International space station wire program  

NASA Technical Reports Server (NTRS)

Hardware provider wire systems and current wire insulation issues for the International Space Station (ISS) program are discussed in this viewgraph presentation. Wire insulation issues include silicone wire contamination, Tefzel cold temperature flexibility, and Russian polyimide wire insulation. ISS is a complex program with hardware developed and managed by many countries and hundreds of contractors. Most of the obvious wire insulation issues are known by contractors and have been precluded by proper selection.

May, Todd

1995-01-01

291

Safety rod/thimble melt failure characterization experiments  

SciTech Connect

The Department of Energy (DOE) requested that he INEL perform experiments to study the thermal failure characteristics of a simulated Savannah River Site nuclear reactor safety rod and its surrounding thimble assembly. An electrically heated stainless steel rod simulated a reactor safety rod located eccentrically or concentrically within a perforated aluminum guide tube or thimble. A total of 37 experiments were conducted for a range of power levels and safety rod/thimble relative orientations. Video tapes were made of the four failure tests that were conducted to the melting point of the thimble. Although the primary emphasis of the experiments were to characterize the melting of the thimble qualitatively, experimental transient measurements included heater voltage and current, heater surface temperatures, aluminum thimble temperatures, and ambient temperature. Numerical studies were also performed in support of the experiments and data interpretation. Two finite element models were created to model the heat conduction-radiation between the stainless steel heater and thimble. The predicted temperatures were in good agreement with the experimental results.

Stoots, C.M.; Hawkes, G.L.

1992-05-01

292

Localized corrosion behaviour in simulated human body fluids of commercial Ni–Ti orthodontic wires  

Microsoft Academic Search

The corrosion performances in simulated human body fluids of commercial equiatomic Ni–Ti orthodontic wires having various shape and size and produced by different manufacturers were evaluated; for comparison purposes wires made of stainless steel and of cobalt-based alloy were also examined. Potentiodynamic tests in artificial saliva at 40°C indicated a sufficient pitting resistance for the Ni–Ti wires, similar to that

G. Rondelli; B. Vicentini

1999-01-01

293

Effect of Long-Term Service on the Structural Strength of Reinforcing Wire  

Microsoft Academic Search

The main factors influencing the structural strength of high-strength reinforcing wire serving for a long period under the conditions of preliminarily stressed structures of reinforced concrete bridges are considered. The processes of local corrosion of reinforcing wire, softening due to relaxation in the metal, and lowering of the crack resistance due to hydrogen saturation of the steel are considered.

V. K. Blokhin; E. Yu. Narusova; O. V. Livanova; G. A. Filippov

2003-01-01

294

HWCTR CONTROL ROD AND SAFETY ROD DRIVE SYSTEMS  

Microsoft Academic Search

The Heavy Water Components Test Reactor (HWCTR) is a pressurized, D\\/sub ; 2\\/O reactor designed for operation up to 70 Mw at 1500 psig and 3l5 deg C. It has ; 18 control rods and six safety rods, each driven by an electric motor through a ; rack and pinion gear train. Racks, pinions, and bearings are located inside ;

Kale

1963-01-01

295

Why are rod-shaped bacteria rod shaped?  

Microsoft Academic Search

Generally speaking, bacteria grow and divide indefinitely, and as long as the growth conditions are maintained they retain constant dimensions and shapes with little variation. How they do this is a question that I have been considering for three decades. Here, I discuss two hypothetical mechanisms, one for Gram-positive rods and the other for Gram-negative rods. These mechanisms are consistent

Arthur L Koch

2002-01-01

296

Control rod support having planar wear surfaces  

Microsoft Academic Search

This patent describes a combination. It comprises: a longitudinally extending rod guide; a support for a control rod. The support being positioned within the rod guide and intended to receive and minimize scarring of the control rod; a cylindrical control rod having a convex surface and being held by a spider including vanes. The support being relatively flat and thin,

L. Veronesi; L. A. Schockling

1990-01-01

297

Towards plant wires  

E-print Network

In experimental laboratory studies we evaluate a possibility of making electrical wires from living plants. In scoping experiments we use lettuce seedlings as a prototype model of a plant wire. We approximate an electrical potential transfer function by applying direct current voltage to the lettuce seedlings and recording output voltage. We analyse oscillation frequencies of the output potential and assess noise immunity of the plant wires. Our findings will be used in future designs of self-growing wetware circuits and devices, and integration of plant-based electronic components into future and emergent bio-hybrid systems.

Adamatzky, Andrew

2014-01-01

298

Relief of Residual Stress in Streamline Tie Rods by Heat Treatment  

NASA Technical Reports Server (NTRS)

About two-thirds of the residual stress in cold-worked SAE 1050 steel tie rods was relieved by heating 30 minutes at 600 degrees Fahrenheit. Cold-worked austenitic stainless-steel tie rods could be heated at temperatures up to 1000 degrees Fahrenheit without lowering the important physical properties. The corrosion resistance, in laboratory corrosion test, of straight 18:8 and titanium-treated 18:8 materials appeared to be impaired after heating at temperatures above 800 degrees or 900 degrees fahrenheit. Columbium-treated and molybdenum-treated 18:8 steel exhibited improved stability over a wide range of temperatures. Tie rods of either material could be heated 30 minutes with safety at any temperature up to 1000 degrees Fahrenheit. At this temperature most of the residual stress would be relieved.

Pollard, R E; Reinhart, Fred M

1941-01-01

299

Use of Second Generation HTS Wire in Filter Inductor Coils  

Microsoft Academic Search

AMSC's process for manufacturing Second Generation (2G) YBCO High Temperature Superconductor wire provides the flexibility to engineer practical 2G conductors with various architectures. For applications with high frequency ac components, a stainless steel stabilizer is used to minimize eddy current losses. An example of such an application is the so-called Buck Inductor, a filter inductor carrying a DC current onto

Cornelis L. H. Thieme; John P. Voccio; Kevin J. Gagnon; John H. Claassen

2009-01-01

300

SAFETY SYSTEM FOR CONTROL ROD  

Microsoft Academic Search

A structure for monitoring the structural continuity of a control rod ; foi a neutron reactor is presented. A electric conductor readily breakable under ; mechanical stress is fastened along the length of the control rod at a plurality ; of positions and forms a closed circuit with remote electrical components ; responsive to an open circuit. A portion of

Paget

1963-01-01

301

Nuclear reactor with control rods  

Microsoft Academic Search

A liquid-cooled nuclear reactor including fuel assemblies mounted within a reactor vessel having linearly movable control rods passing through control rod guide tubes into respective aligned fuel assemblies is described. Reactor coolant circulates through the assemblies. Guide tubes and other vessel internals structures located above the assemblies and is discharged through an outlet nozzle positioned above the elevation of primary

F. D. Obermeyer; R. T. Berringer

1979-01-01

302

Topological Mixing with Ghost Rods  

E-print Network

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.

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

2005-10-29

303

Orbiter Kapton wire operational requirements and experience  

NASA Technical Reports Server (NTRS)

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.

Peterson, R. V.

1994-01-01

304

Hot wire anemometer  

SciTech Connect

An electronic anemometer is described for measuring air mass flow in a conduit, comprising: a length of temperature-dependent resistive wire; a circuit board for holding at least a portion of the anemometer electronic circuitry; a rigid support member, the circuit board being attached to the member; and a pair of electrically conductive, resilient posts capable of withstanding the elevated operating temperatures encountered when the anemometer is operating, each of the posts having a wire-supporting end portion fixedly connected to the wire. The end portions are spaced apart and positionable in the conduit, and biased away from each other to hold the wire under tension, each of the posts further having a remote end portion fixedly held by the support member. The remote end portions are electrically connected to the electronic circuitry.

Watkins, D.W.

1986-08-12

305

Impact Initiation of Rods of Pressed Polytetrafluoroethylene (PTFE) and Aluminum Powders  

NASA Astrophysics Data System (ADS)

A gas gun has been used to investigate the shock initiation of rods of a mixture of 74 wt% PTFE and 26 wt% aluminum powders. The rods were sabot-launched into 4340 steel anvils at impact velocities ranging from 104 to 963 m/s. A framing camera was used to observe the time sequence of events. At low velocity, no initiation occurred. Above an initiation threshold, the initiation time dropped abruptly from 56 ?s just above threshold to 4 ?s at the highest impact velocity. Several high velocity experiments were performed for pure PTFE material for comparison with the PTFE/Al rods.

Mock, Willis; Holt, William H.

2006-07-01

306

Cryogenic Pressure Seal for Wires  

NASA Technical Reports Server (NTRS)

High-pressure-seal formed by forcing polyurethane into space surrounding wire or cable in special fitting. Wire or cable routed through fitting then through a tightly fitting cap. Wire insulation left intact. Cap filled with sealant and forced onto the fitting: this pushes sealant into fitting so it seals wire or cable in fitting as well as in cap.

Ciana, J. J.

1984-01-01

307

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

PubMed Central

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

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

2014-01-01

308

[The long-term fracture resistance of orthodontic nickel-titanium wires].  

PubMed

This study reports on the long-term fracture resistance of orthodontic nickel titanium wires, a material property that has not been investigated thoroughly, yet. A computer-controlled apparatus was designed to perform long-term bending tests. The investigated material comprised 9 nickel titanium wires (dimensions 0.016", round and 0.016" x 0.022", rectangular) as well as a stainless steel and a beta-titanium wire that were included as reference. Compared with the steel wire, the nickel titanium wires exhibited 2- to 5-fold higher yield forces in bending. At a specified deflection angle, the generated bending forces of the nickel titanium wires reached one half to one fourth of the values of steel. The fracture resistance under longterm loading was determined using the Wöhler-method. After 10(5) loadings, 0.016" nickel titanium wires were subject to break failure, if forces exceed values greater than 1.2 to 3.1 N. Steel and TMA wires could be loaded with forces of up to 4.4 and 3.7 N, respectively. The 0.016" x 0.022"-rectangular wires allowed forces of approximately twice this magnitude. Elastic fatigue of the superelastic specimens "Memorywire", "Rematitan Lite", and "Sentalloy medium" showed up as hardening of the wire by up to 70%. Material degradation lead to a severe deformation of the hysteresis loop and to plastic deformation. Work-hardened martensitic NiTi wires did not show these effects to this extent. PMID:8023109

Drescher, D; Bourauel, C; Sonneborn, W; Schmuth, G P

1994-01-01

309

Joining of Aluminum and Steel in Car Body Manufacturing  

NASA Astrophysics Data System (ADS)

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.

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

310

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

NASA Technical Reports Server (NTRS)

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.

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

2010-01-01

311

Prospective, randomized, single blinded pilot study of a new FlatWire based sternal closure system  

PubMed Central

Background Unstable steel wire cerclage following open heart surgery may result in increased pain, sternal cut-through, non-union, or dehiscence. These complications lead to longer hospital stays, increased cost, higher morbidity, and patient dissatisfaction. The Figure 8 FlatWire Sternal Closure System is a new construct which is a simple, intuitive, and inexpensive alternative for primary sternal repair following open heart surgery. Prior bench-top testing of FlatWire has demonstrated superior strength and stiffness compared to traditional steel wire. We present our initial experience in a prospective, randomized, single blinded pilot study utilizing this FDA approved system. Methods Sixty-three patients undergoing elective complete sternotomies at a single institution were randomly assigned to receive either the Figure 8 FlatWire or standard steel wire cerclage. All surgeries were performed by a single board certified cardiothoracic surgeon. Data collected included: Age, BMI, pump time, off pump to surgical stop time, length of hospital stay after surgery, cost from time of surgery to discharge, and pain on a visual analog pain scale on the day of discharge, day 30, and day 60. Results The groups were well matched. Patients receiving the Figure 8 FlatWire (33) had a reduction in length of stay compared to patients receiving steel wire circlage (30), but it was not statistically significant (6.8 vs. 7.8 days respectively, p?Wire reported significantly decreased pain at day of discharge (3.07 vs. 4.92 points on pain scale, p?Wire vs. steel wires (55.7 vs. 71.6 minutes, p?=?0.00025). Mean cost from surgery until discharge was $87,820.98 in the FlatWire group vs. $91,930.29 in the steel wire group (p?Wire provides excellent stability, which resulted in significantly diminished postoperative pain at discharge. Although not significant there was a trend toward decreased length of stay, and reduced cost. Further clinical research is warranted to expand upon these initial trends and validate long term outcomes. PMID:24889138

2014-01-01

312

Splicing Wires Permanently With Explosives  

NASA Technical Reports Server (NTRS)

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.

Bement, Laurence J.; Kushnick, Anne C.

1990-01-01

313

Status of rod consolidation, 1988  

SciTech Connect

It is estimated that the spent fuel storage pools at some domestic light-water reactors will run out of space before 2003, the year that the US Department of Energy currently predicts it will have a repository available. Of the methods being studied to alleviate the problem, rod consolidation is one of the leading candidates for achieving more efficient use of existing space in spent fuel storage pools. Rod consolidation involves mechanically removing all the fuel rods from the fuel assembly hardware (i.e., the structural components) and placing the fuel rods in a close-packed array in a canister without space grids. A typical goal of rod consolidation systems is to insert the fuel rods from two fuel assemblies into a canister that has the same exterior dimensions as one standard fuel assembly (i.e., to achieve a consolidation or compaction ratio of 2:1) and to compact the nonfuel-bearing structural components from those two fuel assemblies by a factor of 10 to 20. This report provides an overview of the current status of rod consolidation in the United States and a small amount of information on related activities in other countries. 85 refs., 36 figs., 5 tabs.

Bailey, W.J.

1989-01-01

314

Curvature of the femur and the proximal entry point for an intramedullary rod.  

PubMed

The degree of anterior curvature of 14 human femurs and four currently marketed intramedullary rods was analyzed with the use of an interactive graphic computer program. The radius of curvature of the femurs ranged from 188.5 to 68.9 cm (average, 114.4 cm). The radius of curvature of three of the four rods analyzed fell beyond the spectrum of radii found in the human femurs. A concomitant investigation of the most appropriate proximal entry site for an intramedullary rod was done based on the patterns of exit sites for both flexible guide wires and two intramedullary rods introduced in a retrograde fashion from the intercondylar notch in 14 matched pairs of human femora. The most appropriate area for proximal access into the medullary canal for these devices would appear to be at the junction of the femoral neck and the greater trochanter slightly anterior to or in the pyriformis recess. PMID:3594986

Harper, M C; Carson, W L

1987-07-01

315

Studies of duplex (copper-coated) wires for use in intrauterine devices.  

PubMed

An investigation to develop and study duplex wire for use in IUDs was initiated by the observation that copper wires wound on IUDs occasionally fragmented after prolonged in vivo use. The duplex wires consist of an exposed active copper surface plated onto an inert inner core to maintain structural continuity. Data demonstrated that the dissolution rates as well as surface changes and biological effects are independent of whether stainless steel, Inconnel or Tophet-M was used as the core. Small IUDs can be wound with a duplex wire in a manner identical to that presently used with pure copper to resist fragmentation and to provide contraceptive effects. PMID:1245117

Sikov, M R; Divine, J R; Hackett, P L

1976-01-01

316

Micromechanical Modelling of Time-Dependent Stress-Corrosion Behaviour of High-Strength Steel  

Microsoft Academic Search

This paper provides micromechanical bases to explain the time-dependent stress corrosion behaviour of high-strength prestressing steel wires. To this end, two eutectoid steels in the form of hot rolled bar and cold drawn wire were subjected to slow strain rate tests in aqueous environments in corrosive conditions corresponding to localized anodic dissolution and hydrogen assisted cracking. While a tensile crack

J. Toribio

1998-01-01

317

Wire-reinforced superalloys  

NASA Technical Reports Server (NTRS)

The problems and progress encountered in developing refractory-wire-reinforced superalloys for turbojet-engine applications at operating temperature within 1000-1200 C are reviewed. Particular attention is given to the problem of the compatibility of the fiber-reinforcement wire and the superalloy matrix and to the means of improving composite properties. Fiber development is described, since fibers with better properties would result in better composite properties. Matrix composition is discussed in terms of its functions, namely to enhance compatibility and provide strength, oxidation protection, and ductility. Advantages and shortcomings of different fabrication techniques are revealed, and the current state of development of wire-reinforced composites is outlined by indicating the properties achieved. Requirements for further development of the material and for application to engineering components are set forth.

Signorelli, R. A.

1974-01-01

318

Ultrasonic profilometry system for control rod wear  

Microsoft Academic Search

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

J. W. Hancock; M. J. Kelly; W. M. Latham; C. E. Stinnett

1991-01-01

319

Flying wires at Fermilab  

SciTech Connect

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.

Gannon, J.; Crawford, C.; Finley, D.; Flora, R.; Groves, T.; MacPherson, M.

1989-03-01

320

OrchidWire  

NSDL National Science Digital Library

Created by orchid enthusiasts Wendell and Theresa Kozak of Vancouver Island, Canada, OrchidWire website is a great resource for anyone interested in orchids. This site is an online orchid resource directory with links to 3911 images and 1184 sites in 51 countries. Site visitors can peruse orchid resources by using an alphabetical appendix or by selecting from different categories like Wild, Culture, Geographic, Genera, and many more. Specific orchid listings or images can be located by using the site search engine. Site users can also submit suggestions for addition to the OrchidWire database.

Kozak, Theresa; Kozak, Wendell

321

Practical Use of Ultrahigh Strength Prestressing Strand  

Microsoft Academic Search

Ultra-high strength prestressing strand (diameter: 15.2 mm, breaking load: 313 kN class) was developed using newly designed steel wire rod. The newly designed steel wire rod contains more carbon, silicon and chromium than conventional steel rods. By drawing and stranding this newly designed steel wire rod, the breaking load of the strand is increased by 20%. The characteristic breaking load

Tomoya MAEKAWA; Takashi ICHIKI; Toshihiko NIKI; Yoshiyuki MATSUBARA; Masato YAMADA; Nozomu KAWABE; Teruyuki MURAI

2007-01-01

322

Thermal Expansion of Long Slender Rods with Forced Convection Cooling along the Rod Length.  

National Technical Information Service (NTIS)

This report presents explicit analytical expressions for the thermal expansion of a rod with heat input at one end and forced convection cooling along the length of the rod. When the rod is graduated for length of the rod. When the rod is graduated for le...

F. F. Rudder

1997-01-01

323

Characterization on strength and toughness of welded joint for Q550 steel  

Microsoft Academic Search

.  Q550 high strength steel was welded using gas shielded arc welding and three different welding wires without pre- or post-heat\\u000a treatments. The paper investigates the influence of welding wire on the microstructure, tensile strength and impact toughness\\u000a of Q550 steel weld joints. Results showed that the microstructure of the weld metal of joints produced using ER50-6 wire was\\u000a a mixture

JIANG QINGLEI; LI YAJIANG; WANG JUAN; ZHANG LEI

324

SPACEWAR WIRE MILITARY SPACE  

E-print Network

TERRORWARS SPACEDAILY TERRADAILY MARSDAILY SPACE TRAVEL SPACEMART SPACE DATABASE Endangered Species WeCHANNELS SPACEWAR WIRE MILITARY SPACE UAV NEWS MILITARY COMMS CYBERWARS MISSILE NEWS RAYGUNS against Kashmiri militants SPACEDAILY NEWS Jan 29, 2004 NASA chief defends Bush's space plans Japan

325

NewsWire, 2002.  

ERIC Educational Resources Information Center

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…

Byrom, Elizabeth, Ed.; Bingham, Margaret, Ed.; Bowman, Gloria, Ed.; Shoemaker, Dan, Ed.

2002-01-01

326

Debate: Wired versus Wireless.  

ERIC Educational Resources Information Center

Debates the issue of investing in wiring schools for desktop computer networks versus using laptops and wireless networks. Included are cost considerations and the value of technology for learning. Suggestions include using wireless networks for existing schools, hardwiring computers for new construction, and not using computers for elementary…

Meeks, Glenn; Nair, Prakash

2000-01-01

327

Basic Wiring. Second Edition.  

ERIC Educational Resources Information Center

This guide is designed to assist teachers conducting a foundation course to prepare students for additional courses of training for entry-level employment in either the residential or commercial and industrial wiring trades. Included in the guide are 17 instructional units and the following sections of information for teachers: guidelines in using…

Kaltwasser, Stan; And Others

328

WiredSafety  

NSDL National Science Digital Library

The Internet has afforded hundreds of millions of people the opportunity to access thousands of sites on almost every topic imaginable, and has created a myriad of new employment opportunities, interest groups, and cybercommunities. Regrettably, not every person merging onto the information superhighway is there for such laudable reasons. Stepping into the fray of n'er-do wells is the WiredSafety website, headed by Perry Aftab, an international cyberspace privacy and security lawyer and children's advocate. Registered as a non-profit organization, WiredSafety offers help for online victims of cybercrime and harassment, educational materials about cybercrime, and assistance for law enforcement worldwide on preventing and investigating cybercrimes. A good place to start on the site is Parry's Internet Safety Guide for Parents, which offers a number of helpful tips for parents about monitoring their children's interactions with others over the Internet. WiredSafety also offers Wired-Ed, which is offered free of charge and allows users to learn more about surfing the net safely. Also featured is a wide range of other online courses.

329

SPACEWAR WIRE MILITARY SPACE  

E-print Network

CHANNELS SPACEWAR WIRE MILITARY SPACE UAV NEWS MILITARY COMMS CYBERWARS MISSILE NEWS RAYGUNS nephew exempted from Israeli military service Four die, 15 hurt as Indian airforce MiG-21 crashes Wins Ground Based Missile Defense Canister Contract Military Rot Spreads To Russia's Nuclear Forces

330

Improved wire chamber  

DOEpatents

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.

Atac, M.

1987-05-12

331

Wired To Flex.  

ERIC Educational Resources Information Center

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…

Fickes, Michael

2000-01-01

332

Fabrication of Wire Mesh Heat Exchangers for Waste Heat Recovery Using Wire-Arc Spraying  

NASA Astrophysics Data System (ADS)

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.

Rezaey, R.; Salavati, S.; Pershin, L.; Coyle, T.; Chandra, S.; Mostaghimi, J.

2014-04-01

333

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

Code of Federal Regulations, 2012 CFR

...of insulated wire; splice in underground wire. 236.74 Section 236.74 Transportation...APPLIANCES Rules and Instructions: All Systems Wires and Cables § 236.74 Protection of insulated wire; splice in underground wire....

2012-10-01

334

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

Code of Federal Regulations, 2013 CFR

...of insulated wire; splice in underground wire. 236.74 Section 236.74 Transportation...APPLIANCES Rules and Instructions: All Systems Wires and Cables § 236.74 Protection of insulated wire; splice in underground wire....

2013-10-01

335

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

Code of Federal Regulations, 2011 CFR

...of insulated wire; splice in underground wire. 236.74 Section 236.74 Transportation...APPLIANCES Rules and Instructions: All Systems Wires and Cables § 236.74 Protection of insulated wire; splice in underground wire....

2011-10-01

336

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

Code of Federal Regulations, 2010 CFR

...of insulated wire; splice in underground wire. 236.74 Section 236.74 Transportation...APPLIANCES Rules and Instructions: All Systems Wires and Cables § 236.74 Protection of insulated wire; splice in underground wire....

2010-10-01

337

Easily-wired toggle switch  

NASA Technical Reports Server (NTRS)

Crimp-type connectors reduce assembly and disassembly time. With design, no switch preparation is necessary and socket contracts are crimped to wires inserted in module attached to back of toggle switch engaging pins inside module to make electrical connections. Wires are easily removed with standard detachment tool. Design can accommodate wires of any gage and as many terminals can be placed on switch as wire gage and switch dimensions will allow.

Dean, W. T.; Stringer, E. J.

1979-01-01

338

Reattachment of greater trochanter after osteotomy for primary hip replacement: Dall-Miles cable or monofilament wires  

Microsoft Academic Search

A total of 102 cases of trochanteric reattachment were retrospectively evaluated clinically and radiologically after trochanteric osteotomy for primary total hip replacement. A comparison was made between the use of monofilament steel wires and Dall-Miles cable-grip system for reattachment of the greater trochanter. Wires were used in 52 patients while cables were used for 50 patients. Mean follow up was

N. Shah; C. V. R. Prasad

2003-01-01

339

1997 wire development workshop: Proceedings  

SciTech Connect

This conference is divided into the following sections: (1) First Generation Wires I; (2) First Generation Wires II; (3) Coated conductors I; and (4) Coated conductors II. Applications of the superconducting wires include fault current limiters, superconducting motors, transformers, and power transmission lines.

NONE

1997-04-01

340

49 CFR 393.28 - Wiring systems.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Wiring systems. 393.28 Section 393.28 Transportation Other Regulations Relating to...Lamps, Reflective Devices, and Electrical Wiring § 393.28 Wiring systems. Electrical wiring...

2010-10-01

341

Corrosion behavior of nitinol wires in body fluid environments.  

PubMed

In this study, breakdown potentials were measured for unpolished and mechanically polished nitinol wires in simulated body fluids. These wires are similar to those used in the manufacture of stents. Considerable scatter was observed in the results indicating a variable surface state. After appropriate heat treatments, the measured breakdown values were lower but more reproducible for the mechanically polished samples. Significantly higher breakdown potentials were observed for cross-section wire samples. Some wires were tested in human blood and the breakdown values were higher than in Ringer and 0.9% NaCl solutions. Energy dispersive X-ray analysis of the surface layers indicated that oxide thickening occurred after heat treatments. Dynamic secondary ion mass spectroscopy also revealed thickened surface oxides on the wires. The oxide was predominantly made up of TiO(2) with a very thin layer of NiO at the outer surface. Galvanic corrosion tests were performed on nitinol wires coupled with gold, elgiloy/phynox, and stainless steel. Nitinol was found to be anodic in all cases yet the currents measured were small. In tests in which nitinol-gold couples were immersed in 0.9% NaCl for periods up to 12 months, only very small amounts of nickel (in the part per billion range) were released into solution and scanning electron microscopy examination revealed no corrosion. PMID:14624497

Carroll, W M; Kelly, M J

2003-12-15

342

Dynamics in Semidilute Rod Suspensions  

NASA Astrophysics Data System (ADS)

While shear-thinning in semidilute suspensions of rod-like particles has been widely observed, the underlying mechanisms are often unclear. We have developed a model system of fluorescent SU-8 rods suspended in a Glycerol/Ethylene-Glycol solution. This model system exhibits an order of magnitude difference in apparent viscosity at low shear rates as compared to high shear rates while showing no discernible difference in structure. Using a coupled confocal microscope and rheometer instrument along with fiber identification and particle tracking routines, we directly image and quantify the 3D structure and dynamics of our model system under shear flow in order to determine how particle interactions could be generating the observed shear thinning. In particular we look at how interactions modify Jeffery's orbits in semidilute suspensions as compared to the motion of an isolated rod or ellipsoid.

Kumar, Pramukta; Blair, Dan; Urbach, Jeffrey

2012-02-01

343

Advanced gray rod control assembly  

DOEpatents

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.

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

344

Effects of Manufacturing-Induced Residual Stresses and Strains on Hydrogen Embrittlement of Cold Drawn Steels  

Microsoft Academic Search

\\u000a Hydrogen embrittlement (HE) plays a relevant role in the performance of prestressing steel wires. In this framework, the knowledge\\u000a of residual stresses and plastic strains in wires due to cold-drawing (manufacturing-induced residual stresses), as well as\\u000a of wires hydrogenation from harsh environments are the keys to successful predictions of wire lives. This paper advances previous\\u000a analyses of HE in cold-drawn

J. Toribio; M. Lorenzo; D. Vergara; V. Kharin

345

Wire insulation defect detector  

NASA Technical Reports Server (NTRS)

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.

Greulich, Owen R. (Inventor)

2004-01-01

346

Recent progress on improvement to mechanical properties of DI-BSCCO wire  

NASA Astrophysics Data System (ADS)

To improve the mechanical properties of silver-sheathed BSCCO wire, the laminated BSCCO wires with stainless steel were made under some experimental conditions. The dependence of the stainless steel thickness and the dependence of the pre-tension of stainless steel tapes on the laminated BSCCO were investigated by mechanical tests (tensile test at 77 K and RT and double-bending test at RT) using short samples. Due to the difference of the coefficient of thermal expansion (CTE) and the relaxation to equilibrium after removing the total pre-tension of no laminated BSCCO (insert tape) and stainless steel tapes, the residual axial compressive strain applies to an insert tape after the lamination process. A high compressive strain up to the compressive yield of the silver-alloy is so useful for improvement of the mechanical properties of BSCCO wire. Measurement results were approximately the same as the simple model calculated from the residual strain applied to an insert tape by the difference of CTE and pre-tension. The stainless-steel-laminated BSCCO wire ‘Type HT-SS’ has been able to be achieved over 500 MPa at 77 K by increasing stainless steel thickness and the residual axial compression for an insert tape. The developed tough DI-BSCCO has a higher hoop force to compare with YBCO-coated conductor using Hastelloy substrates under the same circumstances such as magnetic field, winding diameter and transport current.

Yamazaki, K.; Kagiyama, T.; Kikuchi, M.; Yamade, S.; Nakashima, T.; Kobayashi, S.; Osabe, G.; Fujikami, J.; Hayashi, K.; Sato, K.

2012-05-01

347

Examination of Chinese NiTi wire by a combined clinical and laboratory approach.  

PubMed

Chinese NiTi wire was compared with Nitinol and stainless steel wires in a combined laboratory and clinical examination. In the laboratory test, the loading and unloading-deflection properties of the wires were determined in a three-point bending test and their surface properties were studied in a scanning electron microscope. This test attempts to simulate a common clinical situation. The NiTi material showed a non-linear force-deflection relationship. The increase in force from 1 mm deflection and onwards was very slow and the force delivered during unloading from large deflections was almost constant. This behaviour was somewhat different for smaller downward deflections of NiTi wires. Plastic deformation was insignificant. The clinical study confirmed the laboratory results obtained, characterizing a wire material much superior to stainless steel and even superior to Nitinol for alignment purposes. In clinical use, however, the rate of fractures of NiTi wires turned out to be unsatisfactorily high. This disadvantage was not predicted by the three-point bending test. Scanning electron microscopy revealed surface defects and non-metallic inclusions in fractured NiTi wires. A combination of a bending test simulating a clinical situation and surface examination is recommended when new wire materials are to be tested. PMID:1748186

Mohlin, B; Müller, H; Odman, J; Thilander, B

1991-10-01

348

Wiring for aerospace applications  

NASA Technical Reports Server (NTRS)

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.

Christian, J. L., Jr.; Dickman, J. E.; Bercaw, R. W.; Myers, I. T.; Hammoud, A. N.; Stavnes, M.; Evans, J.

1992-01-01

349

Understanding Guitar Wiring  

NSDL National Science Digital Library

This zipped file provides a number of documents which will help students understand the particulars of guitar wiring. The documents cover the three-way toggle switch, the 5-way lever-action switch, magnetic pick-ups, mini toggle switches, output jacks, selector switches and other details. Once the zipped file is downloaded, the documents (which are in Microsoft Word doc file format) may be viewed.

2012-08-13

350

Morphological features of carburized chromium steels  

Microsoft Academic Search

1.Austenite-carbide columns, which provide high wear resistance of parts, are formed in chromium steels with 17–25% Cr during carburizing at 1000–1300°C.2.The structure of austenite-carbide columns is lamellar and rod-shaped columns of (Fe, Cr)7C3 which have branched into the austenite matrix.

V. I. Movchan; V. P. Gerasimenko; N. V. Senyuk; É. D. Glebova

1981-01-01

351

Application of fiberglass sucker rods  

SciTech Connect

Fiberglass sucker rods are assuming a place in artificial-lift technology. This paper briefly describes the manufacturing process and gives some design and operational hints for practical applications. It also describes some mathematical modeling modifications needed for fiberglass wave-equation design programs.

Gibbs, S.G. (Nabla Corporation (US))

1991-05-01

352

Top slag refining for inclusion composition transform control in tire cord steel  

NASA Astrophysics Data System (ADS)

Controlling conditions for inclusion plasticization were calculated by FactSage, and the steel/slag reaction equilibration time was determined by pre-equilibrium experiments. Laboratory experiments with different top slags were carried out in 90 min, and industrial tests were performed based on the results of calculation and laboratory experiments. Scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) were used to determine the morphology and composition of inclusions in tire cord steel. It is found that the shape of inclusions can be controlled well, and the composition of inclusions varies in the industrial test as the following transformation route: MnO-Al2O3-SiO2?CaO-Al2O3-SiO2?MnO-Al2O3-SiO2. Inclusion plasticization can be achieved by controlling the binary basicity of top slag (CaO/SiO2 by mass) around 1.0 and the (Al2O3) content in top slag below 10wt%. Under these controlling conditions in the industrial test, almost all of inclusions in the wire rods achieve plastic deformation.

Chen, Shu-hao; Jiang, Min; He, Xiao-fei; Wang, Xin-hua

2012-06-01

353

21 CFR 876.4270 - Colostomy rod.  

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4270 Colostomy rod. (a) Identification. A colostomy rod is a device...

2014-04-01

354

21 CFR 876.4270 - Colostomy rod.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4270 Colostomy rod. (a) Identification. A colostomy rod is a device...

2010-04-01

355

21 CFR 876.4270 - Colostomy rod.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4270 Colostomy rod. (a) Identification. A colostomy rod is a device...

2012-04-01

356

21 CFR 876.4270 - Colostomy rod.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4270 Colostomy rod. (a) Identification. A colostomy rod is a device...

2011-04-01

357

21 CFR 876.4270 - Colostomy rod.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4270 Colostomy rod. (a) Identification. A colostomy rod is a device...

2013-04-01

358

Control rods in LMFBRs: a physics assessment  

SciTech Connect

This physics assessment is based on roughly 300 control rod worth measurements in ZPPR from 1972 to 1981. All ZPPR assemblies simulated mixed-oxide LMFBRs, representing sizes of 350, 700, and 900 MWe. Control rod worth measurements included single rods, various combinations of rods, and Ta and Eu rods. Additional measurements studied variations in B/sub 4/C enrichment, rod interaction effects, variations in rod geometry, neutron streaming in sodium-filled channels, and axial worth profiles. Analyses were done with design-equivalent methods, using ENDF/B Version IV data. Some computations for the sensitivities to approximations in the methods have been included. Comparisons of these analyses with the experiments have allowed the status of control rod physics in the US to be clearly defined.

McFarlane, H.F.; Collins, P.J.

1982-08-01

359

Manually Operated Welding Wire Feeder  

NASA Technical Reports Server (NTRS)

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.

Rybicki, Daniel J. (Inventor)

2001-01-01

360

Solid-state-laser-rod holder  

DOEpatents

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.

Gettemy, D.J.; Barnes, N.P.; Griggs, J.E.

1981-08-11

361

Dual wire welding torch and method  

SciTech Connect

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.

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

362

Hydraulic Actuator for Ganged Control Rods  

NASA Technical Reports Server (NTRS)

Hydraulic actuator moves several nuclear-reactor control rods in unison. Electromagnetic pump pushes liquid lithium against ends of control rods, forcing them out of or into nuclear reactor. Color arrows show lithium flow for reactor startup and operation. Flow reversed for shutdown. Conceived for use aboard spacecraft, actuator principle applied to terrestrial hydraulic machinery involving motion of ganged rods.

Thompson, D. C.; Robey, R. M.

1986-01-01

363

49 CFR 236.793 - Rod, lock.  

Code of Federal Regulations, 2012 CFR

...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...

2012-10-01

364

49 CFR 236.793 - Rod, lock.  

Code of Federal Regulations, 2013 CFR

...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...

2013-10-01

365

49 CFR 236.793 - Rod, lock.  

Code of Federal Regulations, 2011 CFR

...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...

2011-10-01

366

49 CFR 236.793 - Rod, lock.  

Code of Federal Regulations, 2010 CFR

...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...

2010-10-01

367

Control rod support having planar wear surfaces  

SciTech Connect

This patent describes a combination. It comprises: a longitudinally extending rod guide; a support for a control rod. The support being positioned within the rod guide and intended to receive and minimize scarring of the control rod; a cylindrical control rod having a convex surface and being held by a spider including vanes. The support being relatively flat and thin, and having a predetermined exterior cross-sectional configuration and including a control rod opening formed in the support and having a predetermined configuration and cross-sectional area, a channel formed in the support to receive one of the vanes and communicate with the control rod opening. The channel forming a respective pair of junctures with the control rod opening. The control rod opening including a pair of planar wear surfaces, each parallel to the axis of the control rod opening and extending laterally from the respective junctures to afford a planar-to-convex interface between the convex surface of the control rod and the planar wear surfaces of the support when the convex surface of the control rod abuts.

Veronesi, L.; Schockling, L.A.

1990-02-20

368

Latch assembly for a control rod drive  

Microsoft Academic Search

This patent describes a control rod drive for positioning a control rod in a nuclear reactor vessel. It comprises: a shaft; a ballnut positioned over the shaft and being translatable upon rotation of the shaft; a piston disposed coaxially with the shaft and on the ballnut for positioning the control rod; means for selectively rotating the shaft in a first

Gibo

1992-01-01

369

Removable control rod drive shaft guide  

Microsoft Academic Search

A removable control rod drive shaft guide is described for a control rod ''guide'' structure card, comprising: a. a substantially annular shaped main body portion having a central axial bore for receiving a control rod drive shaft and an upper exterior groove for receiving removal tooling; b. the main body portion having a reduced outer diameter at its lower section;

M. W. Ales; S. K. Brown; L. D. Dixon

1988-01-01

370

Magnetic switch for reactor control rod  

Microsoft Academic Search

This patent describes a control rod system for a nuclear reactor utilizing an electromagnetic grapple mechanism for holding and releasing a control rod, the improvement comprising a magnetic reed switch assembly having a Curie-point magnetic shunt and responsive to reactor coolant temperature for short circuiting the electromagnetic grapple mechanism causing release of the control rod when the coolant temperature reaches

Germer

1986-01-01

371

INDICATION OF CONTROL-ROD POSITION  

Microsoft Academic Search

The following ways of indicating the position of control rods for a ; large power-producing reactor are discussed: position of each control-rod group ; at the control desk; position of each rod by means of individual indicators on a ; display panel; and a permanent printed record of all significant changes in group ; positions with the time of the

R. D. Bryden; K. J. Simm

1959-01-01

372

Reactor control rod timing system. [LMFBR  

Microsoft Academic Search

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

P. T. K

1980-01-01

373

Examination of cadmium safety rod thermal test specimens and failure mechanism evaluation  

SciTech Connect

The reactor safety rods may be subjected to high temperatures due to gamma heating after the core coolant level has dropped during the ECS phase of a hypothetical LOCA event. Accordingly, an experimental cadmium safety rod testing subtask was established as part of a task to address the response of reactor core components to this accident. Companion reports describe the experiments and a structural evaluation (finite element analysis) of the safety rod. This report deals primarily with the examination of the test specimens, evaluation of possible failure mechanisms, and confirmatory separate effects experiments. It is concluded that the failures observed in the cadmium safety rod thermal tests which occurred at low temperature (T < 600{degrees}C) with slow thermal ramp rates (slow cladding strain rates) resulted from localized dissolution of the stainless steel cladding by the cadmium/aluminum solution and subsequent ductility exhaustion and rupture. The slow thermal ramp rate is believed to be the root cause for the failures; specifically, the slow ramp rate led to localized cladding shear deformation which ruptured the protective oxide film on the cladding inner surface and allowed dissolution to initiate. The test results and proposed failure mechanism support the conclusion that the rods would not fail below 500{degrees}C even at slow ramp rates. The safety rod thermal test specimen failures which occurred at high temperature (T > 800{degrees}C) with fast thermal ramp rates are concluded to be mechanical in nature without significant environmental degradation. Based on these tests, tasks were initiated to design and manufacture B{sub 4}C safety rods to replace the cadmium safety rods. The B{sub 4}C safety rods have been manufactured at this time and it is currently planned to charge them to the reactor in the near future. 60 refs.

Thomas, J.K.; Peacock, H.B.; Iyer, N.C.

1992-01-01

374

Plated wire memory subsystem  

NASA Technical Reports Server (NTRS)

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.

Carpenter, K. H.

1974-01-01

375

Rod cluster having improved vane configuration  

SciTech Connect

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.

Shockling, L.A.; Francis, T.A.

1989-09-05

376

Investigation of Minimum Film boiling Phenomena on Fuel Rods Under Blowdown Cooling Conditions  

SciTech Connect

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.

Stephen M. Bajorek; Michael Gawron; Timothy Etzel; Lucas Peterson

2003-06-30

377

Measurement of the flow velocity field in multi-field wire-plate electrostatic precipitator  

NASA Astrophysics Data System (ADS)

In this paper results of Particle Image Velocimetry (PIV) measurements of the partiele flow velocity fields in a wire-to-plate type electrostatic precipitator (ESP) are presented. One or two grounded stainless-steel plate electrodes and seven wire electrodes in the middle of the ESP height were used. The measurements were carried out in the plane placed perpendicularly to the wire electrodes (for the ESP version with two plate electrodes) and in four planes placed parallel to the wire electrodes (for the ESP version with one plate electrode). Either negative or positive voltage polarity was applied to the wire electrodes. The main gas flow velocity was 0.14 m/s. The obtained results showed strong influence of the electrohydrodynamic (EHD) forces on the flow patterns, which exhibited strong upstream and downstream vortexes. The experiment confirmed that the flow patterns in the ESP have 3-dimensional character.

Podlinski, J.; Dekowski, J.; Kocik, M.; Mizeraczyk, J.; Chang, J. S.

2004-03-01

378

Nuclear reactor remote disconnect control rod coupling indicator  

Microsoft Academic Search

A coupling indicator for use with nuclear reactor control rod assemblies which have remotely disengageable couplings between the control rod and the control rod drive shaft is described. The coupling indicator indicates whether the control rod and the control rod drive shaft are engaged or disengaged. A resistive network, utilizing magnetic reed switches, senses the position of the control rod

Vuckovich

1977-01-01

379

Nuclear reactor remote disconnect control rod coupling indicator  

Microsoft Academic Search

A coupling indicator for use with nuclear reactor control rod assemblies which have remotely disengageable couplings between the control rod and the control rod drive shaft. The coupling indicator indicates whether the control rod and the control rod drive shaft are engaged or disengaged. A resistive network, utilizing magnetic reed switches, senses the position of the control rod drive mechanism

Vuckovich

1977-01-01

380

WIRE, SOFIA and SIRTF  

NASA Technical Reports Server (NTRS)

WIRE, SOFIA and SIRTF are three planned NASA missions for infrared astronomy. Each will make significant contributions to the study of exo-zodiacal dust, planetary debris disks, and/or the zodiacal material within our own solar system. These missions and their measurement and scientific capabilities are synopsized. The principal contribution of these missions to this field of study will be to establish and strengthen its intellectual foundations rather than to pinpoint specific targets for planetary searches. This is consistent with their relatively near-term availability. Moreover, this intellectual understanding can assure that subsequent missions approach this subject from a sound scientific perspective which will yield valuable results independent of the success of a particular planet finding strategy. Each of these missions - most urgently WIRE with its Fall, 1998 launch date - would make good use of a list of candidate target stars for exo-zodiacal/planet-finding studies. The preparation of such a list was one of the recommendations of the exo-zodiacal workshop.

Werner, Michael

1998-01-01

381

Improved superconducting magnet wire  

DOEpatents

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.

Schuller, I.K.; Ketterson, J.B.

1983-08-16

382

Exploiting rod technology. Final report  

SciTech Connect

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).

NONE

1990-06-01

383

Multiphase Structures in Case Hardening Steels following Continuous Cooling  

E-print Network

that the small samples minimise temperature gradients and also permit a uniform austenite grain structure when were used on a push­rod B ¨AHR DIL805 high­speed dilatometer with radio frequency induction heating.) and mechanical properties in the hot­rolled wire or bar are not as required, a heat­treatment is needed

Cambridge, University of

384

Fuel rod assembly to manifold attachment  

DOEpatents

A fuel element is formed with a plurality of fuel rod assemblies detachably connected to an overhead support with each of the fuel rod assemblies having a gas tight seal with the support to allow internal fission gaseous products to flow without leakage from the fuel rod assemblies into a vent manifold passageway system on the support. The upper ends of the fuel rod assemblies are located at vertically extending openings in the support and upper threaded members are threaded to the fuel rod assemblies to connect the latter to the support. The preferred threaded members are cap nuts having a dome wall encircling an upper threaded end on the fuel rod assembly and having an upper sealing surface for sealing contact with the support. Another and lower seal is achieved by abutting a sealing surface on each fuel rod assembly with the support. A deformable portion on the cap nut locks the latter against inadvertent turning off the fuel rod assembly. Orienting means on the fuel rod and support primarily locates the fuel rods azimuthally for reception of a deforming tool for the cap nut. A cross port in the fuel rod end plug discharges into a sealed annulus within the support, which serves as a circumferential chamber, connecting the manifold gas passageways in the support.

Donck, Harry A. (San Diego, CA); Veca, Anthony R. (San Diego, CA); Snyder, Jr., Harold J. (San Diego, CA)

1980-01-01

385

Tests pinpoint sucker-rod failures  

SciTech Connect

A detailed metallurgical examination of a 7/8-inch and a 1-inch sucker rod revealed corrosion fatigue had caused their failure. The 7 to 8-inch rod had failed after a few months of service while the 1-inch rod failed after 1 year. Both rods had been used in a sweet-oil environment. Both rods failed by corrosion fatigue because of repeated loads during operations. Pitting because of the presence of chloride ions and carbon dioxide was initiated on the rod surface, which in turn acted as a crack origin from which the fatigue crack initiated and propagated during operations. The pitting was on the external surface. These pits were large and penetrated through the rod cross-section. Fatigue cracking is initiated at the bottom of the pit where high stress concentration is expected and propagated because the rods were subjected to the alternating stresses during operation. The extent of the fatigue crack varied in the two examined rods because of the difference in the rod heat treatment and microstructure. The paper discusses fatigue failure, the visual examination, macroscopic and microscopic examinations, rod properties, and future operations.

Elshawesh, F.; Elhoud, A.; Elagdel, E. [Petroleum Research Center, Tripoli (Libyan Arab Jamahiriya)

1997-05-26

386

Process for making composite ceramic superconducting wires  

SciTech Connect

A method for making a superconducting wire is described comprising the steps of: oxidizing a yttrium wire to create an oxidized yttrium wire; melting a barium-copper-oxide mixture to create a melted barium-copper-oxide mixture; coating the oxidized yttrium wire with the melted barium-copper oxide mixture; and annealing a resultant coated yttrium wire.

Hermann, A.M.; Zhengzhi Sheng; Shams, Q.A.

1993-06-08

387

3D PIV measurements of the EHD flow patterns in a narrow lectrostatic precipitator with wire-plate or wire-flocking electrodes  

NASA Astrophysics Data System (ADS)

The results of 3-dimensional (3D) Particle Image Velocimetry (PIV) measurements of the electrohydrodynamic (EHD) flow patterns in a narrow electrostatic precipitator (ESP) are presented in this paper. The ESP was an acrylic parallelepiped with a wire discharge electrode and two plane collecting electrodes. In contrary to typical ESPs the wire electrode was placed along the gas flow, in the ESP centre, in the halfway between collecting electrodes. Either two smooth stainless steel plates or two stainless steel meshes with nylon flocks were used as the collecting electrodes. They were placed on the top and bottom of the ESP. The PIV measurements were carried out in two parallel planes, placed perpendicularly to the collecting electrodes and parallel to the wire electrode. The obtained results showed some similarities and differences of a 3D particle flow in the ESP with plate or flocking electrodes.

Podli?ski, J.; Kocik, M.; Barbucha, R.; Niewulis, A.; Mizeraczyk, J.; Mizuno, A.

2006-10-01

388

Radiation Energetics of ICF-Relevant Wire-Array Z Pinches  

NASA Astrophysics Data System (ADS)

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?×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.

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.

2008-04-01

389

Aircraft wiring program status report  

NASA Astrophysics Data System (ADS)

In this Naval Air Warfare Center (NAWC) Aircraft Division status report, the general and wire and cable component activities, the systems engineering activities, the aircraft wiring lead maintenance activities, the NAVAIR/NASA interface activities, and the Base Realignment and Closure (BRAC) Commission recommendations are presented.

Beach, Rex

1995-11-01

390

Aircraft wiring program status report  

Microsoft Academic Search

In this Naval Air Warfare Center (NAWC) Aircraft Division status report, the general and wire and cable component activities, the systems engineering activities, the aircraft wiring lead maintenance activities, the NAVAIR\\/NASA interface activities, and the Base Realignment and Closure (BRAC) Commission recommendations are presented.

Rex Beach

1995-01-01

391

Pin Wire Coating Trip Report  

Microsoft Academic Search

A meeting to discuss the current pin wire coating problems was held at the Reynolds plant in Los Angeles on 2MAR04. The attendance list for Reynolds personnel is attached. there was an initial presentation which gave a brief history and the current status of pin wire coating at Reynolds. There was a presentation by Lori Primus on the requirements and

Spellman

2004-01-01

392

Aircraft wiring program status report  

NASA Technical Reports Server (NTRS)

In this Naval Air Warfare Center (NAWC) Aircraft Division status report, the general and wire and cable component activities, the systems engineering activities, the aircraft wiring lead maintenance activities, the NAVAIR/NASA interface activities, and the Base Realignment and Closure (BRAC) Commission recommendations are presented.

Beach, Rex

1995-01-01

393

Wire and Packing Tape Sandwiches  

ERIC Educational Resources Information Center

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.)

Rabinowitz, Sandy

2009-01-01

394

Submerged arc fillet welds between mild steel and stainless steel  

SciTech Connect

Submerged arc fillet welds between mild steel and Type 304 stainless steel, made with ER309L wire, may contain no ferrite and be at risk of hot cracking, or they may be sufficiently diluted that they transform to martensite with both hot cracking risk and low ductility. This situation is most prevalent when direct current electrode positive (DCEP) polarity is used and when the flange is the mild steel part of the T-joint. A flux that adds chromium to the weld can somewhat alleviate this tendency. Direct current electrode negative (DCEN) polarity greatly reduces this tendency by limiting dilution. Fillet weld compositions and dilutions are obtained for a number of welding conditions and fluxes.

Kotecki, D.J.; Rajan, V.B. [Lincoln Electric Co., Cleveland, OH (United States)

1997-02-01

395

Welding wire pressure sensor assembly  

NASA Technical Reports Server (NTRS)

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.

Morris, Timothy B. (inventor); Milly, Peter F., Sr. (inventor); White, J. Kevin (inventor)

1994-01-01

396

NASA SpaceWire Status  

NASA Technical Reports Server (NTRS)

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.

Rakow, Glenn Parker

2005-01-01

397

Wavepacket Evolution in Quantum Wires  

NASA Astrophysics Data System (ADS)

A lattice method for computing the time-dependent wavepacket of an electron confined to a quantum (nanometer--size) wire in the presence of an ionic impurity will be presented. The method allows us to determine the electron's energy spectrum as a function of wire radius and of impurity position relative to the wire axis. The approach requires very little input to achieve convergence, is basis set independent, and seems to exhibit improved stability over other methods. ( L. Zhang, J. M. Feagin, V. Engel and A. Nakano, Phys. Rev. A49), 3457 (1994). We have begun to investigate the wire's conductivity and impedance and have found that the inherent, usually extreme, spreading of the wavepacket raises basic questions regarding the electron's arrival and departure in the wire.

Stevens, R. E.; Silva, E. R.; Feagin, J. M.

1998-05-01

398

Nano-storage wires.  

PubMed

We report the development of "nano-storage wires" (NSWs), which can store chemical species and release them at a desired moment via external electrical stimuli. Here, using the electrodeposition process through an anodized aluminum oxide template, we fabricated multisegmented nanowires composed of a polypyrrole segment containing adenosine triphosphate (ATP) molecules, a ferromagnetic nickel segment, and a conductive gold segment. Upon the application of a negative bias voltage, the NSWs released ATP molecules for the control of motor protein activities. Furthermore, NSWs can be printed onto various substrates including flexible or three-dimensional structured substrates by direct writing or magnetic manipulation strategies to build versatile chemical storage devices. Since our strategy provides a means to store and release chemical species in a controlled manner, it should open up various applications such as drug delivery systems and biochips for the controlled release of chemicals. PMID:23859333

Lee, Dong Jun; Kim, Eunji; Kim, Daesan; Park, Juhun; Hong, Seunghun

2013-08-27

399

29 CFR 1919.79 - Wire rope.  

Code of Federal Regulations, 2010 CFR

... OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) GEAR CERTIFICATION Certification of Shore-Based Material Handling Devices § 1919.79 Wire rope. (a) Wire rope and replacement wire rope shall...

2010-07-01

400

Claddng of 2 1\\/4 Cr1 Mo steel with type 320Cb stainless steel  

Microsoft Academic Search

Techniques have been developed for weld overlay cladding of 2 1\\/4 Cr-1 Mo steel base metal with type 320Cb stainless steel. With conventional type 320Cb filler wires, fissure-free single-layer submerged-arc (SA) cladding can be applied by using nickel-fortified fluxes. Two-layer techniques, with an intermediate nickel layer, are required for gas metal-arc (GMA) cladding with these materials. Fissuring was a function

D. P. Edmonds; G. M. Goodwin

1979-01-01

401

Combustion of 316 stainless steel in high-pressure gaseous oxygen  

NASA Technical Reports Server (NTRS)

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.

Benz, Frank; Steinberg, Theodore A.; Janoff, Dwight

1989-01-01

402

Phase Transition of High Carbon Steel Demonstration  

NSDL National Science Digital Library

The Materials Science and Technology Teacher's Workshop (MAST) provides this demonstration on the phase transition of high carbon steel. The crystalline structure of iron is different at different temperatures, and high-carbon steel alloys undergo a transformation from BCC to FCC in a very small temperature range. An interesting application of this theory is in determining the maximum temperature to which a piece of steel has been heated before it changes phases. In this module, a piece of piano wire is heated and phase changes are observed through the changes in length and magnetic properties of the wire.The lesson includes a step by step explanation of the laboratory procedure. Discussion questions are also included.

2012-07-09

403

High temperature control rod assembly  

DOEpatents

A high temperature nuclear control rod assembly comprises a plurality of substantially cylindrical segments flexibly joined together in succession by ball joints. The segments are made of a high temperature graphite or carbon-carbon composite. The segment includes a hollow cylindrical sleeve which has an opening for receiving neutron-absorbing material in the form of pellets or compacted rings. The sleeve has a threaded sleeve bore and outer threaded surface. A cylindrical support post has a threaded shaft at one end which is threadably engaged with the sleeve bore to rigidly couple the support post to the sleeve. The other end of the post is formed with a ball portion. A hollow cylindrical collar has an inner threaded surface engageable with the outer threaded surface of the sleeve to rigidly couple the collar to the sleeve. the collar also has a socket portion which cooperates with the ball portion to flexibly connect segments together to form a ball and socket-type joint. In another embodiment, the segment comprises a support member which has a threaded shaft portion and a ball surface portion. The threaded shaft portion is engageable with an inner threaded surface of a ring for rigidly coupling the support member to the ring. The ring in turn has an outer surface at one end which is threadably engageably with a hollow cylindrical sleeve. The other end of the sleeve is formed with a socket portion for engagement with a ball portion of the support member. In yet another embodiment, a secondary rod is slidably inserted in a hollow channel through the center of the segment to provide additional strength. A method for controlling a nuclear reactor utilizing the control rod assembly is also included.

Vollman, Russell E. (Solana Beach, CA)

1991-01-01

404

Tuning the acoustic directional radiation by rotating square rods in two-dimensional phononic crystals  

NASA Astrophysics Data System (ADS)

Analysis is given to acoustic directional radiation tuned by rotating square rods in two-dimensional (2D) solid-fluid phononic crystals (PC). The contour line method is introduced which predicts how the acoustic waves propagate at different frequency. As a specific example, for the systems of steel rods with square cross-section in a water host, we employ this approach to the analysis of the directivity successfully. The directional radiation frequency of two lowest bands are studied in this paper. The results show that the directional radiation frequency can be turned in a wide range by rotating the square rods. While the directivity of acoustic propagation keeps unchanged when the acoustic directional radiation frequency is located in the same band. Moreover, PCs exhibit excellent characteristic of single radiation branch as a corner cut off in a finite structure. Our approach may supply a new way to tune the directional radiation frequency.

Li, Jing; Wu, Fugen; Zhong, Huilin; Zhang, Xin; Yao, Yuanwei

2014-09-01

405

Rolling contact fatigue of surface modified 440C using a 'Ge-Polymet' type disc rod test rig  

NASA Technical Reports Server (NTRS)

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.

Thom, Robert L.

1989-01-01

406

Friction between different wire bracket combinations in artificial saliva – an in vitro evaluation  

PubMed Central

Objective The objective this work was to assess the friction coefficient between brackets and wires of different materials under conditions simulating the oral environment. Material and Methods Stainless steel (SS) and titanium-molybdenum alloy (TMA) wires of 0.019x0.025-in diameter (American Orthodontics) and polycarbonate bracket (American Orthodontics), ceramic bracket (American Orthodontics), and metal bracket (3M Unitek) with slots of 0.022x0.030-in were used. The friction coefficient was assessed by means of mechanical traction with the system immersed in artificial saliva. The mean roughness of both wire surface and bracket slots was evaluated by using a surface profilometer. Results The system using TMA wire and polycarbonate bracket had the highest roughness (p<0.05). SS wire with ceramic bracket had the highest friction coefficient, whereas the use of metallic bracket yielded the lowest (p<0.05). However, it was observed a statistically significant difference in the system using TMA wire and ceramic bracket compared to that using TMA wire and polycarbonate bracket (p=0.038). Conclusion Ceramic brackets in association with SS wire should be judiciously used, since this system showed a high friction coefficient. PMID:21437471

FIDALGO, Tatiana Kelly da Silva; PITHON, Matheus Melo; MACIEL, José Vinicius Bolognesi; BOLOGNESE, Ana Maria

2011-01-01

407

Study of transparent and nontransparent regimes of implosion in star wire arrays  

NASA Astrophysics Data System (ADS)

Star wire arrays were used to control the imploding plasma flows and study plasma interpenetration. These arrays consisted of linear "rays" aligned azimuthally and extending from the vertical axis. Star arrays with two close located wires ("gates") instead of a single wire on the inner cylinder were studied for transparent and nontransparent regimes of propagation of imploding plasma through the gates. Nontransparent mode of collision is typical for regular star wire arrays and it was also observed in Al stars with gate wires of regular length and with the gate width of 0.3-2 mm. The cascade process of implosion in stars and trapping of imploding plasma in 1-2 mm gates were modeled with the three-dimensional resistive magnetohydrodynamics code. The intermediate semitransparent mode of collision was observed in Al stars with long Al "gate" wires. A transparent mode was observed in Al stars with long stainless steel or W gate wires. Applications of wire arrays with controlled plasma flows are discussed.

Ivanov, V. V.; Astanovitskiy, A. L.; Papp, D.; Chittenden, J. P.; Bland, S. N.; Jones, B.; Altemara, S. D.

2010-10-01

408

Study of transparent and nontransparent regimes of implosion in star wire arrays  

SciTech Connect

Star wire arrays were used to control the imploding plasma flows and study plasma interpenetration. These arrays consisted of linear 'rays' aligned azimuthally and extending from the vertical axis. Star arrays with two close located wires ('gates') instead of a single wire on the inner cylinder were studied for transparent and nontransparent regimes of propagation of imploding plasma through the gates. Nontransparent mode of collision is typical for regular star wire arrays and it was also observed in Al stars with gate wires of regular length and with the gate width of 0.3-2 mm. The cascade process of implosion in stars and trapping of imploding plasma in 1-2 mm gates were modeled with the three-dimensional resistive magnetohydrodynamics code. The intermediate semitransparent mode of collision was observed in Al stars with long Al 'gate' wires. A transparent mode was observed in Al stars with long stainless steel or W gate wires. Applications of wire arrays with controlled plasma flows are discussed.

Ivanov, V. V.; Astanovitskiy, A. L.; Papp, D.; Altemara, S. D. [University of Nevada, Reno, 5625 Fox Ave., Reno, Nevada 89506 (United States); Chittenden, J. P.; Bland, S. N. [Blackett Laboratory, Imperial College, London SW7 2BZ (United Kingdom); Jones, B. [Sandia National Laboratories, Albuquerque, New Mexico 87110 (United States)

2010-10-15

409

Investigating Fraction Relationships with Relationship Rods  

NSDL National Science Digital Library

In this lesson plan from Illuminations, students use relationship rods to explore fraction relationships. Relationship rods range in length from one to ten centimeters, and each rod is a different color. An activity sheet with solutions, questions for students, assessment options, and suggested extension activities are included. The lesson plan is part of a five lesson plan unit, Fun with Fractions, which is cataloged separately.

Hargrove, Tracy Y.

2012-01-01

410

LOFT advanced fuel rod instrumentation development  

Microsoft Academic Search

Advanced fuel rod instrumentation for the Loss of Fluid Test (LOFT) reactor is being developed by the Hanford Engineering Development Laboratory for the Nuclear Regulatory Commission. This effort calls for development of sensors to measure fuel rod axial motion, fuel centerline temperature (to 2200°C), fuel rod plenum gas pressure (to 2500 psig), and plenum gas temperature (to 1500°F). A parallel

T. R. Billeter; R. L. Brown; A. I. Y. Chan; C. K. Day; S. C. Meyers; E. M. Sheen; J. L. Stringer

1978-01-01

411

Reactivity worth determination for rod position uncertainty  

Microsoft Academic Search

This document provides the technical basis for determining the reactivity uncertainty associated with control rod position uncertainty. This report supports resolution of Issue B-235, Technical Specifications Submittal No. 73. The N Reactor Technical Specifications B 3\\/4 2.1, Bases for Horizontal Control Rod Systems, allows an uncertainty of 14 inches in rod tip location. Specifically, this reference states, ``An allowance of

K. N. Schwinkendorf; D. A. Tollefson; D. H. Finfrock

1988-01-01

412

Rod swap analysis using SIMULATE-3  

SciTech Connect

The rod swap method is often used to measure control rod worths during low-power physics testing for pressurized water reactors (PWRs). Rod swap can be more advantageous than the conventional control rod measurement technique of boration/dilution because it is less time consuming. Rod swap calculations, however, present a more difficult challenge to the core analysis engineer. Predictions of rod swap measurements are more complex than predictions for conventional boration/dilution measurements. Therefore, more refined analytical models are required (two-dimensional analysis is incapable of performing these predictions properly). Two cycles of rod swap test data from an operating PWR are analyzed in this paper using the Studsvik CASMO-3/SIMULATE-3 in-core fuel management code system. Calculations are performed in a manner analogous to the actual plant test. Two other methods typically associated with control rod worth predictions using the boration/dilution method are also presented. The deficiencies of using these latter methods for rod swap predictions are discussed.

DiGiovine, A.S. (Studsvik Company, Newton Centre, MA (USA)); Elizondo, L.P. (Florida Power and Light Company, Miami (USA))

1989-11-01

413

Requirements for printed wiring boards  

NASA Technical Reports Server (NTRS)

In order to maintain the high standards of the NASA printed wiring programs, this publication: prescribes NASA's requirements for assuring reliable rigid printed wiring boards; describes and incorporates basic considerations necessary to assure reliable rigid printed wiring boards; establishes the supplier's responsibility to train and certify personnel; provides for supplier documentation of the fabrication and inspection procedures to be used for NASA work, including supplier innovations and changes in technology; and provides visual workmanship standards to aid those responsible for determining quality conformance to the established requirements.

1984-01-01

414

Nickel content of as-received and retrieved NiTi and stainless steel archwires: assessing the nickel release hypothesis.  

PubMed

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

Eliades, Theodore; Zinelis, Spiros; Papadopoulos, Moschos A; Eliades, George; Athanasiou, Athanasios E

2004-04-01

415

Wire melting and droplet atomization in a high velocity oxy-fuel jet.  

National Technical Information Service (NTIS)

Coatings produced by feeding a steel wire into a high-velocity oxy-fuel (HVOF) torch are being intensively studied by the automotive industry as a cost-effective alternative to the more expensive cast iron sleeves currently used in aluminum engine blocks....

R. A. Neiser, J. E. Brockmann, T. J. O'Hern

1995-01-01

416

Dry rod consolidation technology development  

SciTech Connect

The Department of Energy's (DOE) Office of Civilian Radioactive Waste Management (OCRWM) is funding a Program to consolidate commercial spent fuel for testing in dry storage casks and to develop technology that will be fed into other OCRWM Programs, e.g., Prototypical Consolidation Demonstration Program. The Program is being conducted at the Idaho National Engineering Laboratory (INEL) by the Operating Contractor, EGandG Idaho, Inc. Hardware and software have been designed and fabricated for installation in a hot cell adjacent to the Test Area North (TAN) Hot Shop Facility. This equipment will be used to perform dry consolidation of commercial spent fuel from the Virginia Power (VP) Cooperative Agreement Spent Fuel Storage Cask (SPSC) Demonstration Program and assemblies that had previously been stored at the Engine Maintenance and Disassembly (EMAD) facility in Nevada. Consolidation will be accomplished by individual, horizontal rod pulling. A computerized semi-automatic control system with operator involvement will be utilized to conduct consolidation operations. Special features have been incorporated in the design to allow crud collection and measurement of rod pulling forces. During consolidation operations, data will be taken to characterize this technology. Still photo, video tape, and other documentation will be generated to make developed information available to interested parties. Cold checkout of the hardware and software will complete in September of 1986. Following installation in the hot cell, consolidation operations will begin in January 1987. Resulting consolidated fuel will be utilized in the VP Cooperative Agreement SFSC Program.

Rasmussen, T.L.; Schoonen, D.H.; Fisher, M.W.

1986-01-01

417

System for controlling destructive vibration of a nuclear control rod  

Microsoft Academic Search

A nuclear control rod system is described having control rods and means for controlling the transverse vibration of the control rods, consisting of: a guide tube aligned axially below a reciprocable control rod while the rod is in its stored position, a tube sheet tube in the form of a cylinder mounted on the upper discharge end of the guide

Formanek

1986-01-01

418

System for preventing erroneous operation of control rods  

Microsoft Academic Search

System for preventing erroneous operation of control rods for securing a safety control of a nuclear reactor is described. The erroneous operation preventing system is comprised of a control rod objective position setting means for setting an objective position of a control rod, a control rod position detector for detecting a position of the control rod, and an operation means

S. Nakamura; M. Sakurai; Y. Yoshimoto

1981-01-01

419

Demonstrating Forces between Parallel Wires.  

ERIC Educational Resources Information Center

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)

Baker, Blane

2000-01-01

420

Asteroseismology with the WIRE satellite  

E-print Network

I give a summary of results from the WIRE satellite, which has been used to observe bright stars from 1999-2000 and 2003-2006. The WIRE targets are monitored for up to five weeks with a duty cycle of 30-40%. The aim has been to characterize the flux variation of stars across the Hertzsprung-Russell diagram. I present an overview of the results for solar-like stars, delta Scuti stars, giant stars, and eclipsing binaries.

H. Bruntt

2007-02-01

421

Synthesis of Magnesium Diboride Wires  

Microsoft Academic Search

Magnesium diboride, MgB2, has been of great interest recently due to its high superconducting transition temperature for a material which exhibits properties similar to classical (BCS) superconductors. It has been found that wire segments of MgB2 can be prepared by exposing commercial boron coated filaments to magnesium vapor. This research has shown that the critical current of such wires is

Paul Canfield; Sergei Bud'Ko; Douglas Finnemore Anderson Jr.

2002-01-01

422

Smart Wire Grid: Resisting Expectations  

ScienceCinema

Smart Wire Grid's DSR technology (Discrete Series Reactor) can be quickly deployed on electrical transmission lines to create intelligent mesh networks capable of quickly rerouting electricity to get power where and when it's needed the most. With their recent ARPA-E funding, Smart Wire Grid has been able to move from prototype and field testing to building out a US manufacturing operation in just under a year.

Ramsay, Stewart; Lowe, DeJim

2014-04-09

423

Unstable Behavior in Exploding Wire Array  

Microsoft Academic Search

Although considerable investigations have been reported on z-pinches to achieve nuclear fusion, little attention has been given from the point of view of how a wire array consisting of many parallel wires explodes. In this paper, the unstable behavior of a wire array is investigated. The instability occurs by the deviation from the homogeneous current flow through many wires. The

Naoyuki Shimomura; Masayoshi Nagata; Yusuke Teramoto; Hidenori Akiyama

2000-01-01

424

Spring control of wire harness loops  

NASA Technical Reports Server (NTRS)

Negator spring control guides wire harness between movable and fixed structure. It prevents electrical wire harness loop from jamming or being severed as wire moves in response to changes in position of aircraft rudder. Spring-loaded coiled cable controls wire loop regardless of rudder movement.

Curcio, P. J.

1979-01-01

425

HTS Wire Development Workshop: Proceedings  

NASA Astrophysics Data System (ADS)

The 1994 High-Temperature Superconducting Wire Development Workshop was held on February 16-17 at the St. Petersburg Hilton and Towers in St. Petersburg, Florida. The meeting was hosted by Florida Power Corporation and sponsored by the US Department of Energy's Superconductivity Program for Electric Power Systems. The meeting focused on recent high-temperature superconducting wire development activities in the Department of Energy's Superconductivity Systems program. The meeting opened with a general discussion on the needs and benefits of superconductivity from a utility perspective, the US global competitiveness position, and an outlook on the overall prospects of wire development. The meeting then focused on four important technology areas: (1) Wire characterization: issues and needs; (2) technology for overcoming barriers: weak links and flux pinning; (3) manufacturing issues for long wire lengths; and (4) physical properties of HTS coils. Following in-depth presentations, working groups were formed in each technology area to discuss the most important current research and development issues. The working groups identified research areas that have the potential for greatly enhancing the wire development effort. These areas are discussed in the summary reports from each of the working groups. This document is a compilation of the workshop proceedings including all general session presentations and summary reports from the working groups.

1994-07-01

426

HTS Wire Development Workshop: Proceedings  

SciTech Connect

The 1994 High-Temperature Superconducting Wire Development Workshop was held on February 16--17 at the St. Petersburg Hilton and Towers in St. Petersburg, Florida. The meeting was hosted by Florida Power Corporation and sponsored by the US Department of Energy`s Superconductivity Program for Electric Power Systems. The meeting focused on recent high-temperature superconducting wire development activities in the Department of Energy`s Superconductivity Systems program. The meeting opened with a general discussion on the needs and benefits of superconductivity from a utility perspective, the US global competitiveness position, and an outlook on the overall prospects of wire development. The meeting then focused on four important technology areas: Wire characterization: issues and needs; technology for overcoming barriers: weak links and flux pinning; manufacturing issues for long wire lengths; and physical properties of HTS coils. Following in-depth presentations, working groups were formed in each technology area to discuss the most important current research and development issues. The working groups identified research areas that have the potential for greatly enhancing the wire development effort. These areas are discussed in the summary reports from each of the working groups. This document is a compilation of the workshop proceedings including all general session presentations and summary reports from the working groups.

Not Available

1994-07-01

427

49 CFR 236.76 - Tagging of wires and interference of wires or tags with signal apparatus.  

Code of Federal Regulations, 2012 CFR

... false Tagging of wires and interference of wires or tags with signal apparatus. 236.76 ...APPLIANCES Rules and Instructions: All Systems Wires and Cables § 236.76 Tagging of wires and interference of wires or tags with...

2012-10-01

428

49 CFR 236.76 - Tagging of wires and interference of wires or tags with signal apparatus.  

Code of Federal Regulations, 2010 CFR

... false Tagging of wires and interference of wires or tags with signal apparatus. 236.76 ...APPLIANCES Rules and Instructions: All Systems Wires and Cables § 236.76 Tagging of wires and interference of wires or tags with...

2010-10-01

429

49 CFR 236.76 - Tagging of wires and interference of wires or tags with signal apparatus.  

Code of Federal Regulations, 2013 CFR

... false Tagging of wires and interference of wires or tags with signal apparatus. 236.76 ...APPLIANCES Rules and Instructions: All Systems Wires and Cables § 236.76 Tagging of wires and interference of wires or tags with...

2013-10-01

430

49 CFR 236.76 - Tagging of wires and interference of wires or tags with signal apparatus.  

Code of Federal Regulations, 2011 CFR

... false Tagging of wires and interference of wires or tags with signal apparatus. 236.76 ...APPLIANCES Rules and Instructions: All Systems Wires and Cables § 236.76 Tagging of wires and interference of wires or tags with...

2011-10-01

431

The scaling of the effective band gaps in indium-arsenide quantum dots and wires.  

PubMed

Colloidal InAs quantum wires having diameters in the range of 5-57 nm and narrow diameter distributions are grown from Bi nanoparticles by the solution-liquid-solid (SLS) mechanism. The diameter dependence of the effective band gaps (DeltaE(g)s) in the wires is determined from photoluminescence spectra and compared to the experimental results for InAs quantum dots and rods and to the predictions of various theoretical models. The DeltaE(g) values for InAs quantum dots and wires are found to scale linearly with inverse diameter (d(-1)), whereas the simplest confinement models predict that DeltaE(g) should scale with inverse-square diameter (d(-2)). The difference in the observed and predicted scaling dimension is attributed to conduction-band nonparabolicity induced by strong valence-band-conduction-band coupling in the narrow-gap InAs semiconductor. PMID:19206431

Wang, Fudong; Yu, Heng; Jeong, Sohee; Pietryga, Jeffrey M; Hollingsworth, Jennifer A; Gibbons, Patrick C; Buhro, William E

2008-09-23

432

Nuclear control rod position indicating assembly  

Microsoft Academic Search

The position of a control rod located within a nuclear reactor is sensed by an externally located position indicating assembly. The assembly includes a reed switch voltage divider circuit in which the individual reed switches are actuated in a 2-3-2-3 sequence by the magnetic field of a permanent magnet mounted to the control rod. The assembly averages the signals from

M. K. Foxworthy; J. T. Houston; B. D. Ziels

1977-01-01

433

CONTROL RODS FOR NUCLEAR REACTOR CORES  

Microsoft Academic Search

A reactor control rod is designed which has increased effectiveness as ; compared with the width of the aperture in the pressure vessel through which it ; passes. The control rod carries six fins, three on each side, and two of the ; fins are fixed while the other, being adjustable, is capable of movement from ; between the fixed

Bell

1961-01-01

434

Control rod housing alignment and repair method  

Microsoft Academic Search

This patent describes a method for underwater welding of a control rod drive housing inserted through a stub tube to maintain requisite alignment and elevation of the top of the control rod drive housing to an overlying and corresponding aperture in a core plate as measured by an alignment device which determines the relative elevation and angularity with respect to

R. C. Dixon; G. A. Deaver; J. R. Punches; G. E. Singleton; J. G. Erbes; H. P. Offer

1992-01-01

435

Tipping Time of a Quantum Rod  

ERIC Educational Resources Information Center

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…

Parrikar, Onkar

2010-01-01

436

1 mil gold bond wire study.  

SciTech Connect

In microcircuit fabrication, the diameter and length of a bond wire have been shown to both affect the current versus fusing time ratio of a bond wire as well as the gap length of the fused wire. This study investigated the impact of current level on the time-to-open and gap length of 1 mil by 60 mil gold bond wires. During the experiments, constant current was provided for a control set of bond wires for 250ms, 410ms and until the wire fused; non-destructively pull-tested wires for 250ms; and notched wires. The key findings were that as the current increases, the gap length increases and 73% of the bond wires will fuse at 1.8A, and 100% of the wires fuse at 1.9A within 60ms. Due to the limited scope of experiments and limited data analyzed, further investigation is encouraged to confirm these observations.

Huff, Johnathon; McLean, Michael B.; Jenkins, Mark W.; Rutherford, Brian Milne

2013-05-01

437

Simulation of transient fluid flow in mold region during steel continuous casting  

E-print Network

is controlled by vertical motion of a stopper rod into the top of the UTN. The liquid steel jets from the nozzle 1 [1]. Liquid slag may be entrained into the liquid steel pool via various mechanisms, as summarized Thomas1 , and J Sengupta2 1 Department of Mechanical Science and Engineering, University of Illinois

Thomas, Brian G.

438

Effects of irradiation on the fracture properties of stainless steel weld overlay cladding  

Microsoft Academic Search

Stainless steel weld overlay cladding was fabricated using the submerged arc, single-wire, oscillating-electrode, and the three-wire, series-arc methods. Three layers of cladding were applied to a pressure vessel plate to provide adequate thickness for fabrication of test specimens, and irradiations were conducted at temperatures and to fluences relevant to power reactor operation. For the first single-wire method, the first layer

F. M. Haggag; W. R. Corwin; R. K. Nanstad

1989-01-01

439

EFFECT OF RESIDUAL STRESS PROFILE ON HYDROGEN EMBRITTLEMENT SUSCEPTIBILITY OF PRESTRESSING STEEL  

Microsoft Academic Search

The influence of the residual stress and strain distributions caused by surface treatments on the hydrogen embrittlement susceptibility of cold drawn prestressing steel wires, as characterized by means of the time to failure in the FIP test, is analysed. The model to predict the wire life in the hydrogenating aggressive solution is developed. It includes the simulation of hydrogen transport

V. Kharin; J. Toribio

2005-01-01

440

Impact Initiation of Rods of Pressed Polytetrafluoroethylene (PTFE) and Aluminum Powders  

NASA Astrophysics Data System (ADS)

A gas gun has been used to investigate the shock initiation of rods consisting of a mixture of 74 wt % PTFE (28 ?m particle size) and 26 wt % aluminum (5 ?m particle size) powders. The 7.6 mm diameter by 51 mm long rods were fabricated from material that had been pressed and sintered to a full density of 2.27 gm/cm^ 3. The rods were sabot-launched into 4340 steel anvils at impact velocities ranging from 104 to 777 m/s. This corresponds to calculated impact stresses of 3.3 to 48 kbar. The experiments were carried out in a 50-100 mtorr vacuum. A framing camera was used to observe the time sequence of events. These include changes in rod shape, fracture, and the initiation and evolution of the reaction phenomena. Observation of first visible light after impact was taken as the initiation time. Initiation of the reaction occurred at discrete locations in the rod material. At low velocity, no initiation occurred. Above an initiation threshold, the initiation time dropped abruptly from 56 ?s just above threshold to 4 ?s at the highest impact velocity. Two experiments were performed for pure PTFE material for comparison with the PTFE/Al rods. The pure PTFE showed more extensive radial flow without obvious brittle fracture. For the 784 m/s impact experiment, small points of light were observed on the edge of the mushroomed portion of the rod about 20 ?s after impact, suggesting the onset of chemical reaction.

Mock, Willis, Jr.

2005-07-01

441

Rod influence on hue-scaling functions.  

PubMed

Rod influence on hue appearance of spectral lights was characterized by comparing the scaling of red, green, yellow, and blue hue sensations for an 8 degrees-diameter, 7 degrees-eccentric test spot under conditions that minimized (cone plateau) and maximized (dark adapted) rod influence at two mesopic light levels (1.5 and 3.0 log scoptic trolands). At the lower light level, the hue-scaling functions showed that rod signals influenced the spectral range and magnitude of all four primary hues. The rod influence could not be characterized as a ubiquitous augmentation or diminution of any hue over the entire spectrum. This constrains models of rod influence on color vision. PMID:9893835

Buck, S L; Knight, R; Fowler, G; Hunt, B

1998-11-01

442

Vortex Noise from Rotating Cylindrical Rods  

NASA Technical Reports Server (NTRS)

A series of round rods of the some diameter were rotated individually about the mid-point of each rod. Vortices are shed from the rods when in motion, giving rise to the emission of sound. With the rotating system placed in the open air, the distribution of sound in space, the acoustical power output, and the spectral distribution have been studied. The frequency of emission of vortices from any point on the rod is given by the formula von Karman. From the spectrum estimates are made of the distribution of acoustical power along the rod, the amount of air concerned in sound production, the "equivalent size" of the vortices, and the acoustical energy content for each vortex.

Stowell, E Z; Deming, A F

1935-01-01

443

Fabrication of Pd-Cr wire  

NASA Technical Reports Server (NTRS)

Fabrication of Pd-13 percent Cr alloy wires is described. Melting, casting, swaging and annealing processes are discussed. Drawing to reach two diameters (0.003 inch and 0.00176 inch) of wire is described. Representative micrographs of the Pd-Cr alloy at selected stages during wire fabrication are included. The resistance of the wire was somewhat lower, by about 15 to 20 percent, than comparable wire of other alloys used for strain gages.

Diamond, Sidney; Leach, Dennen M.

1989-01-01

444

Self-assembly of rod-coil-rod ABA-type triblock copolymers  

NASA Astrophysics Data System (ADS)

Self-assembled behavior of symmetric ABA rod-coil-rod triblock copolymer melts is studied by applying self-consistent-field lattice techniques in three-dimensional space. The phase diagram is constructed to understand the effects of the chain architecture on the self-assembled behavior. Four stable structures are observed for the ABA rod-coil-rod triblock, i.e., spherelike, lamellar, gyroidlike, and cylindrical structures. Different from AB rod-coil diblock and BAB coil-rod-coil triblock copolymers, the lamellar structure observed in ABA rod-coil-rod triblock copolymer melts is not stable for high volume fraction of the rod component (frod=0.8), which is attributed to the intramolecular interactions between the two rod blocks of the polymer chain. When 0.3rod block, such as a lamellar-alt-lamellar structure. The results are expected to provide guidance for the design of microstructures in experiments.

Chen, Ji-Zhong; Sun, Zhao-Yan; Zhang, Cheng-Xiang; An, Li-Jia; Tong, Zhen

2008-02-01

445

THIN FILM aSi\\/poly-Si MULTIBANDGAP TANDEM SOLAR CELLS WITH BOTH ABSORBER LAYERS DEPOSITED BY HOT WIRE CVD  

Microsoft Academic Search

The first competitive a-Si\\/poly-Si multibandgap tandem cells have been made in which the two intrinsic absorber layers are deposited by Hot Wire Chemical Vapor Deposition (HWCVD). These cells consist of two stacked n-i-p type solar cells on a plain stainless steel substrate using plasma deposited n- and p-type doped layers and Hot-Wire deposited intrinsic (i) layers, where the i-layer is

R. E. I. SCHROPP; C. H. M. VAN DER WERF; M. K. VAN VEEN

446

System for preventing erroneous operation of control rods  

SciTech Connect

System for preventing erroneous operation of control rods for securing a safety control of a nuclear reactor is described. The erroneous operation preventing system is comprised of a control rod objective position setting means for setting an objective position of a control rod, a control rod position detector for detecting a position of the control rod, and an operation means which operates a difference between the objective position set up and the detected position of the control rod being operated and produces a signal for blocking the control rod operation when the control rod is operated so that the difference goes away from zero. The erroneous operation blocking system stops the control rod at the first possible control rod stopping position. The erroneous operation preventing system includes a return operation commanding unit for compensating for erroneous operation of the control rod when the control rod is erroneously operated.

Nakamura, S.; Sakurai, M.; Yoshimoto, Y.

1981-08-04

447

Preform rod feeding module of the optical fiber drawing tower and its algorithm design based on STM32  

NASA Astrophysics Data System (ADS)

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.

Zhang, Tao; Fan, Zhaocheng; Liu, Guanyu; Geng, Tao; Li, Xin

2012-10-01

448

Beyond Borders: Poetry Slicing through Steel Gates and Barbed Wires  

ERIC Educational Resources Information Center

Exchange of poems at the 2nd Annual San Quentin/Patten College poetry slam with the prisoners is reported to be an event, which was extraordinaire. It was an opportunity to understand the hidden popular culture.

Jocson, Korina M.

2004-01-01

449

Wire chambers revisited.  

PubMed

Detectors used for radioisotope imaging have, historically, been based on scintillating crystal/photomultiplier combinations in various forms. From the rectilinear scanner through to modern gamma cameras and positron cameras, the basic technology has remained much the same. Efforts to overcome the limitations of this form of technology have foundered on the inability to reproduce the required sensitivity, spatial resolution and sensitive area at acceptable cost. Multiwire proportional chambers (MWPCs) have long been used as position-sensitive charged particle detectors in nuclear and high-energy physics. MWPCs are large-area gas-filled ionisation chambers in which large arrays of fine wires are used to measure the position of ionisation produced in the gas by the passage of charged particles. The important properties of MWPCs are high-spatial-resolution, large-area, high-count-rate performance at low cost. For research applications, detectors several metres square have been built and small-area detectors have a charged particle resolution of 0.4 mm at a count rate of several million per second. Modification is required to MWPCs for nuclear medicine imaging. As gamma rays or X-rays cannot be detected directly, they must be converted into photo- or Compton scatter electrons. Photon-electron conversion requires the use of high atomic number materials in the body of the chamber. Pressurised xenon is the most useful form of "gas only" photon-electron convertor and has been used successfully in a gamma camera for the detection of gamma rays at energies below 100 keV. This camera has been developed specifically for high-count-rate first-pass cardiac imaging. This high-pressure xenon gas MWPC is the key to a highly competitive system which can outperform scintillator-based systems. The count rate performance is close to a million counts per second and the intrinsic spatial resolution is better than the best scintillator-based camera. The MWPC camera produces quantitative ejection fraction information of the highest quality. The detection of higher energy gamma rays has proved more problematical, needing a solid photon-electron convertor to be incorporated into the chamber. Several groups have been working on this problem with modest success so far. The only clinical detectors have been developed for positron emission tomography, where thin lead or lead-glass can provide an acceptable convertor for 511 keV photons. Two MWPC positron cameras have been evaluated clinically and one is now in routine use in clinical oncology. The problems of detection efficiency have not been solved by these detectors although reliability and large-area PET imaging have been proven.(ABSTRACT TRUNCATED AT 400 WORDS) PMID:8491229

Ott, R J

1993-04-01

450

Scale-up of 2G wire manufacturing at American Superconductor Corporation  

NASA Astrophysics Data System (ADS)

American Superconductor Corporation (AMSC) has developed the base technology and a manufacturing line for initial volume production of low-cost second generation high temperature superconductor (2G HTS) wire for commercial and military applications. The manufacturing line is based on reel-to-reel processing of wide HTS strips using rolling assisted bi-axially textured substrate (RABiTS™) for the template and Metal Organic Deposition (MOD) for the HTS layer. AMSC’s wide strip process is a low cost manufacturing technology since multiple wires are produced in a single manufacturing pass by slitting the wide strip to narrower width in the last stage of the manufacturing process. Industry standard 4.4 mm wide wires are produced by laminating metallic foils, such as copper, stainless steel or any other material, to the HTS insert wire, and are chosen to tailor the electrical, thermal and mechanical properties of the wire for specific applications. The laminated, 4.4 mm wide wires are known as “344 superconductors.” In this paper, we summarize the status of AMSC’s manufacturing capability, the performance of the wire presently being produced, as well as the cost and technical advantages of AMSC’s manufacturing approach. In addition, future direction for research and development to improve electrical performance is presented.

Fleshler, S.; Buczek, D.; Carter, B.; Cedrone, P.; DeMoranville, K.; Gannon, J.; Inch, J.; Li, X.; Lynch, J.; Otto, A.; Podtburg, E.; Roy, D.; Rupich, M.; Sathyamurthy, S.; Schreiber, J.; Thieme, C.; Thompson, E.; Tucker, D.; Nagashima, K.; Ogata, M.

2009-10-01

451

30 CFR 75.906 - Trailing cables for mobile equipment, ground wires, and ground check wires.  

Code of Federal Regulations, 2012 CFR

... false Trailing cables for mobile equipment, ground wires, and ground check...75.906 Trailing cables for mobile equipment, ground wires, and ground check wires. [Statutory Provisions] Trailing cables for...

2012-07-01

452

30 CFR 75.906 - Trailing cables for mobile equipment, ground wires, and ground check wires.  

Code of Federal Regulations, 2013 CFR

... false Trailing cables for mobile equipment, ground wires, and ground check...75.906 Trailing cables for mobile equipment, ground wires, and ground check wires. [Statutory Provisions] Trailing cables for...

2013-07-01

453

30 CFR 75.906 - Trailing cables for mobile equipment, ground wires, and ground check wires.  

Code of Federal Regulations, 2011 CFR

... false Trailing cables for mobile equipment, ground wires, and ground check...75.906 Trailing cables for mobile equipment, ground wires, and ground check wires. [Statutory Provisions] Trailing cables for...

2011-07-01

454

Epitaxial growth of quantum rods with high aspect ratio and compositional contrast  

SciTech Connect

The epitaxial growth of quantum rods (QRs) on GaAs was investigated. It was found that GaAs thickness in the GaAs/InAs superlattice used for QR formation plays a key role in improving the QR structural properties. Increasing the GaAs thickness results in both an increased In compositional contrast between the QRs and surrounding layer, and an increased QR length. QRs with an aspect ratio of up to 10 were obtained, representing quasiquantum wires in a GaAs matrix. Due to modified confinement and strain potential, such nanostructure is promising for controlling gain polarization.

Li, L. H. [Ecole Polytechnique Federale de Lausanne, Institute of Photonics and Quantum Electronics, Station 3, CH-1015 Lausanne (Switzerland); Patriarche, G. [LPN/CNRS, Route de Nozay, 91460 Marcoussis (France); Fiore, A. [COBRA Research Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven (Netherlands)

2008-12-01

455

Plasma arc torch with coaxial wire feed  

DOEpatents

A plasma arc welding apparatus having a coaxial wire feed. The apparatus includes a plasma arc welding torch, a wire guide disposed coaxially inside of the plasma arc welding torch, and a hollow non-consumable electrode. The coaxial wire guide feeds non-electrified filler wire through the tip of the hollow non-consumable electrode during plasma arc welding. Non-electrified filler wires as small as 0.010 inches can be used. This invention allows precision control of the positioning and feeding of the filler wire during plasma arc welding. Since the non-electrified filler wire is fed coaxially through the center of the plasma arc torch's electrode and nozzle, the wire is automatically aimed at the optimum point in the weld zone. Therefore, there is no need for additional equipment to position and feed the filler wire from the side before or during welding.

Hooper, Frederick M (Albuquerque, NM)

2002-01-01

456

The Effect of Annealing on the Elastic Modulus of Orthodontic Wires  

NASA Astrophysics Data System (ADS)

Introduction: Nickel Titanium orthodontic wires are currently used in orthodontic treatment due to their heat activated properties and their delivery of constant force. The objective of this study was to determine the effect of annealing on the elastic modulus of Nickel Titanium, Stainless Steel and Beta-titanium (TMA) wires. Different points along the wire were tested in order to determine how far from the annealed ends the elastic modulus of the wires was affected. Methods: Eighty (80) orthodontic wires consisting of 4 equal groups (SS/TMA/Classic NitinolRTM/Super Elastic NitinolRTM) were used as the specimens for this study. All wires were measured and marked at 5mm measurements, and cut into 33.00mm sections. The wires were heated with a butane torch until the first 13.00mm of the wires were red hot. Load deflection tests using an InstronRTM universal testing machine were run at 5mm distances from the end of the wire that had been annealed. The change in elastic modulus was then determined. Results: There was a significant difference (F = 533.001, p = 0.0005) in the change in elastic modulus for the four distances. There was also a significant difference (F = 57.571, p = 0.0005) in the change in elastic modulus for the four wire types. There was a significant interaction (F = 19.601, p = 0.005) between wire type and distance, however this interaction negated the differences between the wires. Conclusion: 1) There are significant differences in the changes in elastic modulus between the areas of the wires within the annealed section and those areas 5mm and 10mm away from the annealed section. The change in elastic modulus within the annealed section was significantly greater at 8 mm than it was at 13mm, and this was significantly greater than 18mm and 23mm (5mm and 10mm beyond the annealed section). However, there was no statistical difference in the change in elastic modulus between 5mm and 10mm away from the annealed section (18mm and 23mm respectively). 2) Regardless of the wire type, no clinically important effects were seen 5mm and 10mm beyond the annealed portion.

Higginbottom, Kyle

457

Raft Formation of Rod-like Polyelectrolytes  

NASA Astrophysics Data System (ADS)

We investigate the formation of raft-like aggregates by charged rod-like polyelectrolytes, as reported from experiments employing F-actin as well as from theoretical analyses. Through extensive molecular-dynamics simulations of pairs of rods at different salt concentrations we construct free-energy landscapes, which in turn elucidate the most likely kinetic pathways to aggregation. Additional simulations of layers of rods at varying skew orientations and lateral spacings demonstrate to what extent the lessons learned from pair simulations apply to large aggregates.

Sinkovits, Daniel W.; Luijten, Erik

2008-03-01

458

Modified Elastofiber Element for Steel Slender Column and Brace Modeling  

E-print Network

-strain behavior akin to that observed in a standard tension test of a rod in the laboratory, with a linear elastic: Elasticity; Inelasticity; Buckling; Steel columns; Beam columns; Bracing; Cracking; Failures; Cyclic tests-scale six-story braced frame structure that was pseudodynamically tested at the Building Research Institute

Krishnan, Swaminathan

459

Control rod drive hydraulic system  

DOEpatents

A hydraulic system for a control rod drive (CRD) includes a variable output-pressure CR pump operable in a charging mode for providing pressurized fluid at a charging pressure, and in a normal mode for providing the pressurized fluid at a purge pressure, less than the charging pressure. Charging and purge lines are disposed in parallel flow between the CRD pump and the CRD. A hydraulic control unit is disposed in flow communication in the charging line and includes a scram accumulator. An isolation valve is provided in the charging line between the CRD pump and the scram accumulator. A controller is operatively connected to the CRD pump and the isolation valve and is effective for opening the isolation valve and operating the CRD pump in a charging mode for charging the scram accumulator, and closing the isolation valve and operating the CRD pump in a normal mode for providing to the CRD through the purge line the pressurized fluid at a purge pressure lower than the charging pressure.

Ose, Richard A. (San Jose, CA)

1992-01-01

460

Peculiarities of Wire Array Implosion  

SciTech Connect

The results of the experiments on Z-pinch produced from wire arrays performed on the facility Angara-5-1 are presented. The models of liner implosion, i.e. prolonged plasma production have found their confirmation. Estimation based on our experimental data show that W wire cores are heterogeneous. The velocity of core expansion is determined by energy deposited at the first nanoseconds after current start. The effect of the inner array on the current distribution in the region between the arrays has been revealed. The ?lost mass ? was measured at initial radius of array at the moment of X-ray pulse maximum.

Aleksandrov, V.V.; Volkov, G.S.; Grabovski, E.V.; Zaitsev, V.I.; Zukakishvili, G.G.; Medovschikov, S.F.; Mitrofanov, K.N.; Nedoseev, S.L.; Oleinik, G.M.; Porofeev, I.Yu.; Samokhin, A.A.; Smirnov, V.P.; Frolov, I.N.; Fedulov, M. V. [SRC RF TRINITI, Troitsk, Moscow Reg., 142190 (Russian Federation); Sasorov, P.V. [Institute of Theoretical and Experimental Physics, Moscow, 142190 (Russian Federation)

2006-01-05

461

Wire Detection Algorithms for Navigation  

NASA Technical Reports Server (NTRS)

In this research we addressed the problem of obstacle detection for low altitude rotorcraft flight. In particular, the problem of detecting thin wires in the presence of image clutter and noise was studied. Wires present a serious hazard to rotorcrafts. Since they are very thin, their detection early enough so that the pilot has enough time to take evasive action is difficult, as their images can be less than one or two pixels wide. Two approaches were explored for this purpose. The first approach involved a technique for sub-pixel edge detection and subsequent post processing, in order to reduce the false alarms. After reviewing the line detection literature, an algorithm for sub-pixel edge detection proposed by Steger was identified as having good potential to solve the considered task. The algorithm was tested using a set of images synthetically generated by combining real outdoor images with computer generated wire images. The performance of the algorithm was evaluated both, at the pixel and the wire levels. It was observed that the algorithm performs well, provided that the wires are not too thin (or distant) and that some post processing is performed to remove false alarms due to clutter. The second approach involved the use of an example-based learning scheme namely, Support Vector Machines. The purpose of this approach was to explore the feasibility of an example-based learning based approach for the task of detecting wires from their images. Support Vector Machines (SVMs) have emerged as a promising pattern classification tool and have been used in various applications. It was found that this approach is not suitable for very thin wires and of course, not suitable at all for sub-pixel thick wires. High dimensionality of the data as such does not present a major problem for SVMs. However it is desirable to have a large number of training examples especially for high dimensional data. The main difficulty in using SVMs (or any other example-based learning method) is the need for a very good set of positive and negative examples since the performance depends on the quality of the training set.

Kasturi, Rangachar; Camps, Octavia I.

2002-01-01

462

Corrosion of steel tendons used in prestressed concrete pressure vessels  

Microsoft Academic Search

The corrosion behavior of a high-strength steel (Specifications for Uncoated Seven-Wire-Stress-Relieved Strand for Prestressed Concrete (ASTM A 416-74, Grade 270)), typical of those used as tensioning tendons in prestressed concrete pressure vessels was measured in several corrosive environments. The protection obtained by coating the steel with two commercial petroleum-base greases or with Portland cement grout was evaluated. The few reported

J. C. Griess; D. J. Naus

1980-01-01

463

Development of narrow gap welding technology for extremely thick steel  

NASA Astrophysics Data System (ADS)

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.

Imai, K.; Saito, T.; Okumura, M.

464

Effects of manufacturing-induced residual stresses and strains on hydrogen embrittlement of cold drawn steels  

Microsoft Academic Search

Cold drawn wires of eutectoid pearlitic steel are widely used for prestressing concrete structures that usually work in harsh environments, so that stress corrosion cracking of prestressing steel is a problem of major technological concern. In this paper a previous model developed by the authors is applied to analyse the influence of the residual stress-and-strain profiles after cold drawing on

J. Toribio; M. Lorenzo; D. Vergara; V. Kharin

2011-01-01

465

Repair welding of cracked steam turbine blades using austenitic and martensitic stainless-steel consumables  

Microsoft Academic Search

The procedure for repair welding of cracked steam turbine blades made of martensitic stainless steels has been developed using the gas tungsten arc welding process. Weld repair procedures were developed using both ER 316L austenitic and ER 410 martensitic stainless-steel filler wire. The overall development of the repair welding procedure included selection of welding consumables (for austenitic filler metal), optimisation

A. K Bhaduri; T. P. S Gill; S. K Albert; K Shanmugam; D. R Iyer

2001-01-01

466

The attenuation of rod signals by bleachings  

PubMed Central

1. Contrast flash technique allows the rod threshold to be measured even when it lies far above the cone threshold. In this way the rod dark adaptation curve after rhodopsin bleaching can be measured over 6 log units. 2. By retinal densitometry the regeneration of rhodopsin can be measured in the same subject. It is found that the log threshold is raised 1·2 units for each 10% of rhodopsin in the bleached state. 3. We have tried to discover whether bleaching raises the threshold by desensitizing the rods, or (like backgrounds) by attenuating their signals. Neither suggestion satisfies all conditions. 4. All are satisfied by [Formula: see text], where N is the size of rod signal, constant for threshold; ?, ?D are steady backgrounds of light and receptor noise; ? is the threshold flash with ? a constant of about 2·5 log td sec; B the fraction of pigment in the bleached state. PMID:5499030

Alpern, M.; Rushton, W. A. H.; Torii, S.

1970-01-01

467

Mechanical behavior of elastic rods under constraint  

E-print Network

We present the results of an experimental investigation of the mechanics of thin elastic rods under a variety of loading conditions. Four scenarios are explored, with increasing complexity: i) the shape of a naturally ...

Miller, James Thomas, Ph. D. Massachusetts Institute of Technology

2014-01-01

468

Rod influence on hue-scaling functions  

Microsoft Academic Search

Rod influence on hue appearance of spectral lights was characterized by comparing the scaling of red, green, yellow, and blue hue sensations for an 8°-diameter, 7°-eccentric test spot under conditions that minimized (cone plateau) and maximized (dark adapted) rod influence at two mesopic light levels (1.5 and 3.0 log scoptic trolands). At the lower light level, the hue-scaling functions showed

Steven L Buck; Roger Knight; Garth Fowler; Brian Hunt

1998-01-01

469

Many oscillations of a rigid rod  

Microsoft Academic Search

The many oscillations of a rigid rod-pendular, bifilar, torsional, coupled, nonlinear (including pure x3), and chaotic-provide interesting opportunities for experimental and theoretical investigations in introductory, intermediate, and advanced mechanics courses. Because of the rod's simple geometry, precise expressions for the periods of its oscillations can be calculated, allowing comparisons between theory and experiment to within 0.5%. At this level of

Alan Cromer

1995-01-01

470

MULTI-ROD BURNOUT AT HIGH PRESSURE  

Microsoft Academic Search

Thirty-two burnout points were obtained on an electrically heated ; assembly of nine simulated fuel rods in a square channel. The hydraulic diameter ; was 0.52 in., and the 0.375-in.-dia. rods were uniformly heated over an 18-in. ; length. Test conditions ranged from 0.01 to 0.35 in steam quality at pressures ; of 1000 and 1400 psia, and mass velocities

E. E. Polomik; E. P. Quinn

1962-01-01

471

Control rods and method of producing same  

Microsoft Academic Search

A control rod for a boiling-water reactor having blades arranged in the form of a cross in transverse cross section includes a plurality of poison tubes disposed therein. Boron carbide powder which is a neutron absorbing material causing an (n,a) reaction to take place is charged in the poison tubes. The control rod has plates of Hf-Zr alloy arranged in

E. Nishimura; T. Hayashi; E. Ibe; M. Kitamura; K. Saito; S. Uchida

1984-01-01

472

The effect of zinc oxide nanoparticles deposition for friction reduction on orthodontic wires  

PubMed Central

Background: In the sliding technique, the reduced frictional forces are associated with rapid tooth movements and better control of the anchorage. Recently, wire coating with different nanoparticles has been proposed to decrease frictional forces. This in vitro study was carried out to coat stainless steel (SS) wires with zinc oxide (ZnO) nanoparticles in order to determine the effect of this coating on friction between wires and orthodontic brackets. Materials and Methods: Eighty 0.016 inch and 0.019 inch × 0.025 inch SS wires with and without ZnO nanoparticles were used in 80 orthodontic brackets (0.018 and 0.022 systems). The coated wires were analyzed by SEM and X-Ray diffraction (XRD) observations. Kinetic friction between the wires and orthodontic brackets were calculated using a universal testing machine. Frictional forces were statistically analyzed using three-way ANOVA, one-way ANOVA, Student's t-test and Tukey multiple comparison tests. Results: Coating with ZnO nanoparticles significantly influenced frictional force values (P < 0.0001). In 0.019 inch × 0.025 inch wires, the frictional forces were 1.6912 ± 0.18868 and 3.4485 ± 0.32389 N in the coated and uncoated wires respectively, (51% reductions). In the 0.016 inch wires, the friction values were estimated to be 1.5668 ± 0.10703 and 2.56 ± 0.34008 N in the coated and uncoated conditions, respectively, (39% reductions). Conclusion: Due to the positive effects of ZnO nanoparticle coating on decreasing frictional forces, these nanoparticles might offer a novel opportunity to significantly reduce friction during tooth movement. PMID:24130586

Kachoei, Mojghan; Eskandarinejad, Faranak; Divband, Baharak; Khatamian, Masumeh

2013-01-01

473

Distributed hot-wire anemometry based on Brillouin optical time-domain analysis.  

PubMed

A distributed hot-wire anemometer based on Brillouin optical time-domain analysis is presented. The anemometer is created by passing a current through a stainless steel tube fibre bundle and monitoring Brillouin frequency changes in the presence of airflow. A wind tunnel is used to provide laminar airflow while the device response is calibrated against theoretical models. The sensitivity equation for this anemometer is derived and discussed. Airspeeds from 0 m/s to 10 m/s are examined, and the results show that a Brillouin scattering based distributed hot-wire anemometer is feasible. PMID:22772259

Wylie, Michael T V; Brown, Anthony W; Colpitts, Bruce G

2012-07-01

474

Critical Heat Flux and Onset of Nucleate Boiling Tests in a Finned Rod Bundle  

SciTech Connect

Critical heat flux (CHF) tests using rod bundles were performed under low-flow conditions to supplement the CHF database for HANARO fuel. The test rod had the same geometric configuration as the HANARO fuel, and its aluminum cladding with fins was made by coextrusion on the stainless steel heating tube. Three types of test sections were used: hexagonal with seven rods, triangular with three rods, and rectangular with four rods. Each test bundle has three spacers axially, and a view window is located in the upper region of the test section. Flow patterns until the CHF condition are typically varied from bubbly flow to annular flow, and then CHF occurs through the long annular flow period. A total of 36 bundle CHF data were obtained from the 3 test sections. The results showed that the CHFs for bundles are larger than those for a single rod with the same geometrical dimension by a maximum 26% as the mass flux changes. It is considered that these results are induced by the enhancement of the turbulence and thermal mixing generated by the spacers. In addition, measurement of the onset of nucleate boiling (ONB) in the rectangular bundle was attempted using sound signals. A hydrophone was attached near the outlet wall of the test section. Hydrophone signals around the ONB point were measured and analyzed based on the frequency through the real fast Fourier transform. Frequency analysis showed clear differences in the power spectral densities for two different frequency ranges before and after ONB, which verifies the usefulness of sound signals for ONB detection.

Chae, Hee Taek [Korea Atomic Energy Research Institute (Korea, Republic of); Park, Jong Hark [Korea Atomic Energy Research Institute (Korea, Republic of); Kim, Heonil [Korea Atomic Energy Research Institute (Korea, Republic of); Chang, Soon Heung [Korea Advanced Institute of Science and Technology (Korea, Republic of)

2004-12-15

475

Movement of Telegraph-Wires  

Microsoft Academic Search

I HAVE frequently noticed the peculiar movement of telegraph wires noticed by your correspondent. For some time I took it to be an ordinary case of vibration, but it presented so many peculiar features that I was induced to examine it more closely. It frequently happens that when the temperature and dew-point of the air are at or about the

R. Mountford Deeley

1886-01-01

476

Breakdown testing of wiring insulation  

NASA Technical Reports Server (NTRS)

The dielectric strength of potential wiring insulation, recommended by NASA Lewis Research Center to replace existing M81381 (polyimide), was evaluated at high temperature. Results, given in view-graph format, show that their is no dependence of breakdown strength on temperature for the constructions tested and that their was little effect of frequency on the breakdown characteristics.

Laghari, Javaid R.

1994-01-01

477

Wire-Wrap Chatter Detector  

NASA Technical Reports Server (NTRS)

Monitoring circuit responds to changes in resistance as little as 0.1 ohm. Has been used to detect defective wire-wrap connections during thermal and vibration tests. Defect is indicated to operator by light-emitting diode and by increase in count on a two-digit display.

Fisch, G. Z.; Borden, T. J.

1982-01-01

478

Vocational Preparation Curriculum: Electrical Wiring.  

ERIC Educational Resources Information Center

This document is a curriculum guide for instructors teaching vocational preparation for electrical wiring to special needs students. The purpose of the curriculum guide is to provide minimum skills for disadvantaged and handicapped students entering the mainstream; to supplement vocational skills of those students already in a regular training…

Usoro, Hogan

479

International symposium on fuel rod simulators: development and application  

SciTech Connect

Separate abstracts are included for each of the papers presented concerning fuel rod simulator operation and performance; simulator design and evaluation; clad heated fuel rod simulators and fuel rod simulators for cladding investigations; fuel rod simulator components and inspection; and simulator analytical modeling. Ten papers have previously been input to the Energy Data Base.

McCulloch, R.W. (comp.)

1981-05-01

480

On a discrete model of an elastic rod  

NASA Astrophysics Data System (ADS)

The paper examines the problem of the stability of equilibrium of an elastic rod one of whose ends is fixed. A discrete model of the rod is developed which represents the rod as a collection of stiff homogeneous rods connected with one another and with a fixed base via elastic joints consisting of ideal hinges and spiral springs.

Krasil'Nikov, P. S.

481

Method of and apparatus for replacing control rod drive  

Microsoft Academic Search

A control rod drive attaching and detaching device and a control rod drive handling device are mounted on a revolving device to be movable independently from each other. The control rod drive attaching and detaching device includes bolt handling means for loosening and tightening bolts for fastening a control rod drive to a pressure vessel of a nuclear reactor, coolant

Y. Ishii; M. Sasaki; S. Sugiyama; T. Yoshida

1981-01-01

482

Control rod drive for nuclear reactors. [BWR; PWR  

Microsoft Academic Search

A nuclear reactor control rod drive for finely adjustable normal insertion and withdrawal of control rods from the reactor core, for scramming the control rods, as well as for locking the control rods in their respective rated position, the insertion being effected in a direction opposing the force of gravity, and the withdrawal being effected in direction of the force

G. Eschenfelder; R. Schultz

1977-01-01

483

Rebirth of a control rod at the Phenix power plant  

Microsoft Academic Search

This paper outlines the operations involved in cleaning the control rod for the complementary shutdown system in the Phenix Power Plant, the French sodium-cooled fast reactor. The Phenix reactor is controlled by six control rods and a complementary shutdown system. The latter comprises a control rod and a mechanism maintaining the rod in position by means of an electromagnet. The

Corinne De Carvalho; Bernard Vignau; Marc Masson

2007-01-01

484

Dependence of control rod worth on fuel burnup  

Microsoft Academic Search

One important parameter in the design and the analysis of a nuclear reactor core is the reactivity worth of the control rods, i.e. their efficiency to absorb excess reactivity. The control rod worth is affected by parameters such as the fuel burnup in the rod vicinity, the Xe concentration in the core, the operational time of the rod and its

P. Savva; M. Varvayanni; N. Catsaros

2011-01-01

485

DEVICES FOR COOLING THE CONTROL RODS OF NUCLEAR REACTORS  

Microsoft Academic Search

Patented cooling tubes and valves for reactor control rods are ; described, which regulate the flow of coolant as a function of the position of ; the rods in the reactor. The cross-sectional diameter of each control-rod tube ; increases from the inlet end, so that the control rod is in the part of the tube ; with maximum diameter

A. Ertaud; J. Panossian

1963-01-01

486

Method and apparatus for control rod drop monitoring  

Microsoft Academic Search

This paper describes a system for continuously monitoring control rod drop times in a reactor. It comprises: means for receiving a reactor trip signal and for generating an initiation signal; timer circuits, each timer circuit being associated with one of a plurality of control rods, including means for receiving a control rod position signal indicative of each associated control rod

Lexa

1991-01-01

487

Wire mesh isolator protects sensitive electronic components  

NASA Technical Reports Server (NTRS)

Sensitive electronic components are enclosed in wire mesh for protection. The wire mesh isolates the component from shock and vibration. It acts as a heat sink and as a screen against RF interference.

Kerley, J. J., Jr.

1965-01-01

488

30 CFR 57.12047 - Guy wires.  

Code of Federal Regulations, 2013 CFR

...LABOR METAL AND NONMETAL MINE SAFETY AND HEALTH SAFETY AND HEALTH STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Electricity Surface and Underground § 57.12047 Guy wires. Guy wires of poles supporting high-voltage...

2013-07-01

489

30 CFR 56.12047 - Guy wires.  

...Guy wires. Guy wires of poles supporting high-voltage transmission lines shall meet the requirements for grounding or insulator protection of the National Electrical Safety Code, part 2, entitled “Safety Rules for the Installation and...

2014-07-01

490

30 CFR 57.12047 - Guy wires.  

...Guy wires. Guy wires of poles supporting high-voltage transmission lines shall meet the requirements for grounding or insulator protection of the National Electrical Safety Code, part 2, entitled “Safety Rules for the Installation and...

2014-07-01

491

Evaluation of high temperature stranded hookup wire  

NASA Technical Reports Server (NTRS)

Tests are performed on wire and insulation materials to determine selection for electronic space assemblies. Wire characteristics of tensile strength, flexibility, conductivity, and general workability are tested. Knowledge of the advantages and limitations of these materials should prevent overspecification.

Donnelly, J. H.; Moore, H. J., Jr.

1967-01-01

492

Technique for stripping Teflon insulated wire  

NASA Technical Reports Server (NTRS)

Cryogenic stripping of Teflon insulated wire leaves no residue and produces no physical damage. After the wire is immersed in liquid nitrogen, bent slightly, and returned to room temperature, the Teflon is removed by fingernails or flat-nosed pliers.

Babb, B. D.

1967-01-01

493

46 CFR 111.60-11 - Wire.  

Code of Federal Regulations, 2011 CFR

...60-11 Section 111.60-11 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) ELECTRICAL ENGINEERING ELECTRIC SYSTEMS-GENERAL REQUIREMENTS Wiring Materials and Methods § 111.60-11 Wire....

2011-10-01

494

46 CFR 111.60-11 - Wire.  

Code of Federal Regulations, 2012 CFR

...60-11 Section 111.60-11 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) ELECTRICAL ENGINEERING ELECTRIC SYSTEMS-GENERAL REQUIREMENTS Wiring Materials and Methods § 111.60-11 Wire....

2012-10-01

495

46 CFR 111.60-11 - Wire.  

Code of Federal Regulations, 2010 CFR

...60-11 Section 111.60-11 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) ELECTRICAL ENGINEERING ELECTRIC SYSTEMS-GENERAL REQUIREMENTS Wiring Materials and Methods § 111.60-11 Wire....

2010-10-01

496

New insulation constructions for aerospace wiring applications  

NASA Technical Reports Server (NTRS)

Outlined in this presentation is the background to insulation constructions for aerospace wiring applications, the Air Force wiring policy, the purpose and contract requirements of new insulation constructions, the test plan, and the test results.

Slenski, George

1994-01-01

497

Electromagnetic methods for measuring materials properties of cylindrical rods and array probes for rapid flaw inspection  

SciTech Connect

The case-hardening process modifies the near-surface permeability and conductivity of steel, as can be observed through changes in alternating current potential drop (ACPD) along a rod. In order to evaluate case depth of case hardened steel rods, analytical expressions are derived for the alternating current potential drop on the surface of a homogeneous rod, a two-layered and a three-layered rod. The case-hardened rod is first modeled by a two-layer rod that has a homogeneous substrate with a single, uniformly thick, homogeneous surface layer, in which the conductivity and permeability values differ from those in the substrate. By fitting model results to multi-frequency ACPD experimental data, estimates of conductivity, permeability and case depth are found. Although the estimated case depth by the two-layer model is in reasonable agreement with the effective case depth from the hardness profile, it is consistently higher than the effective case depth. This led to the development of the three-layer model. It is anticipated that the new three-layered model will improve the results and thus makes the ACPD method a novel technique in nondestructive measurement of case depth. Another way to evaluate case depth of a case hardened steel rod is to use induction coils. Integral form solutions for an infinite rod encircled by a coaxial coil are well known, but for a finite length conductor, additional boundary conditions must be satisfied at the ends. In this work, calculations of eddy currents are performed for a two-layer conducting rod of finite length excited by a coaxial circular coil carrying an alternating current. The solution is found using the truncated region eigenfunction expansion (TREE) method. By truncating the solution region to a finite length in the axial direction, the magnetic vector potential can be expressed as a series expansion of orthogonal eigenfunctions instead of as a Fourier integral. Closed-form expressions are derived for the electromagnetic field in the presence of a finite a two-layer rod and a conductive tube. The results are in very good agreement with those obtained by using a 2D finite element code. In the third part, a new probe technology with enhanced flaw detection capability is described. The new probe can reduce inspection time through the use of multiple Hall sensors. A prototype Hall array probe has been built and tested with eight individual Hall sensor ICs and a racetrack coil. Electronic hardware was developed to interface the probes to an oscilloscope or an eddy current instrument. To achieve high spatial resolution and to limit the overall probe size, high-sensitivity Hall sensor arrays were fabricated directly on a wafer using photolithographic techniques and then mounted in their unencapsulated form. The electronic hardware was then updated to interface the new probes to a laptop computer.

Sun, Haiyan

2005-05-01

498

The generation of warm dense matter according to numerical modeling of thick wire heating  

NASA Astrophysics Data System (ADS)

Rad-MHD modeling with MHRDR gives insight into a UNR experiment where 900-kA with a 70-ns rise time is driven through a 1-mm-diameter aluminum rod. The skin depth is smaller than the rod radius, so the aluminum is compressed by the pinch effect. However, experimentally the surface of the rod expands radially, even while the current is increasing. Expansion is expected and observed in thin wires, where magnetic forces are small compared with the pressure generated by Ohmic heating, but expansion is somewhat surprising in thick-wire experiments because magnetic forces are so strong that compression of aluminum to over twice normal density is expected. Simulations show expansion in these experiments results when the resistivity allows a small imbalance between magnetic forces and the pressure gradient, which allows material to slip through the magnetic field. Predicting the expansion is a challenge, because the expanding aluminum is primarily in the regime of warm dense matter, in which the ion-ion coupling parameter is larger than unity, and electrical resistivity estimates are difficult. In these simulations SESAME tables are used that include resistivity estimates from recent experiments and quantum-molecular-dynamic computations.

Makhin, Volodymyr; Angelova, Milena; Awe, Thomas; Bauer, Bruno; Lindemuth, Irvin; Paraschiv, Ioana; Siemon, Richard

2008-04-01

499

Novel Wiring Technologies for Aerospace Applications  

NASA Technical Reports Server (NTRS)

Because wire failure in aerospace vehicles could be catastrophic, smart wiring capabilities have been critical for NASA. Through the years, researchers at Kennedy Space Center (KSC) have developed technologies, expertise, and research facilities to meet this need. In addition to aerospace applications, NASA has applied its knowledge of smart wiring, including self-healing materials, to serve the aviation industry. This webinar will discuss the development efforts of several wiring technologies at KSC and provide insight into both current and future research objectives.

Gibson, Tracy L.; Parrish, Lewis M.

2014-01-01

500

Life prediction of aging aircraft wiring systems  

NASA Technical Reports Server (NTRS)

The program goal is to develop a computerized life prediction model capable of identifying present aging progress and predicting end of life for aircraft wiring. A summary is given in viewgraph format of progress made on phase 1 objectives, which were to identify critical aircraft wiring problems; relate most common failures identified to the wire mechanism causing the failure; assess wiring requirments, materials, and stress environment for fighter aircraft; and demonstrate the feasibility of a time-temperature-environment model.

Slenski, George

1995-01-01