The invention is an ultrasonic testing device for rapid and complete examination of the test specimen, and is particularly well suited for evaluation of tubular test geometries. A variety of defect categories may be detected and analyzed at one time and their positions accurately located in a single pass down the test specimen.

The invention is an ultrasonic testing device for rapid and complete examination of the test specimen, and is particularly well suited for evaluation of tubular test geometries. A variety of defect categories may be detected and analyzed at one time and their positions accurately located in a single pass down the test specimen.

The invention is an ultrasonic testing device for rapid and complete examination of the test specimen, and is particularly well suited for evaluation of tubular test geometries. A variety of defect categories may be detected and anlayzed at one time and their positions accurately located in a single pass down the test specimen.

Jun 16, 2011 � The feasibility of ultrasonic scanning for defect detection in pallet manufacturing is examined in this report. Scanning was conducted by ...

... Title : Ultrasonic Newton's Rings,. ... The ultrasonic scan showed distinct Newton's rings whose radii were in excellent agreement with the prediction. ...

... Title : Ultrasonic Newton's Rings,. ... The ultrasonic scan showed distinct Newton's rings whose radii were in excellent agreement with the prediction. ...

... SYSTEM FOR ULTRASONIC WELD INSPECTION. ... MICROPROCESSOR CONTROLLED ULTRASONIC EQUIPMENT ... FROM A WELDED JOINT. ...

... A conventional ultrasonic c-scan attenuation inspection of the TMC panel was compared with more advanced ultrasonic methods including polar ...

... The concentration of oxygen calculated from ultrasonic data is accurate to approximately 1% over the range of 21 to 95%. ...

... Accession Number : ADA180178. Title : Ultrasonic Scanning for Finding Interface Voids of Compound Cylinders. Descriptive ...

Composite flywheels are being considered as replacements for chemical batteries ... Results of an ultrasonic spectroscopy scan of a plastic cylinder with ...

... Title : On Relating Ultrasonic Scanning Information to Size, Shape, and Type of Flaws in Laminated Plastic Structure,. Corporate Author : ...

... on theoretical studies, with the help of the approach, a short pulse mechanical scanning ultrasonic transducer is designed and manufactured. ...

The effects of scanning variables such as scanning speed, contact pressure, and couplant viscosity and their impact on ultrasonic amplitude response were considered. In addition, the surface adherence with repeated scanning was investigated for the common...

Development of ultrasonic inspectlon methods for heavywall graphite sleeves is described. Results indicate that certaln structural defects in graphite tubing can be consistently detected. Only through-transmission was found to be suitable in all cases and a total loss of signal on the receiver must occur before a defect can be positively identifled. It was concluded ...

... PRELIMINARY DEVELOPMENT OF ULTRASONIC C-SCAN TEST METHODS AND STANDARDS TO DETERMINE ... Ultrasonic test Rotating bands ...

... Title : New Developments of the Ultrasonic P-Scan Technique and New Perspectives in the Automatic Ultrasonic Inspection,. Corporate Author : ...

Jun 30, 2009 ... 9-Axis Ultrasonic C-Scan System. Immersion Ultrasonics Lab. Purpose: To experimentally measure ultrasonic properties of materials. ...

Thin Film Ultrasonic Transducer for Accurate Control of Fastener Clamp Load Ultrafast, Inc. Malvern, PA. INNOVATION. Low-cost ultrasonic thin film coating for ...

... Title : THE PROJECTION SCAN, A NEW METHOD FOR RECORDING AND VISUALIZING DATA FROM ULTRASONIC WELD INSPECTION. ...

Electron Backscatter Diffraction (EBSD) is a microscopic technique that provides detailed crystallographic orientation and microstructural information, allowing for accurate measurement of such properties like average grain size. In order to validate and better understand what information an ultrasonic technique can give us we are correlating the ...

An ultrasonic scan procedure using the pulse-echo contact configuration was employed to obtain maps of pore fraction variations in sintered silicon nitride samples in terms of ultrasonic material properties. Ultrasonic velocity, attenuation coefficient, a...

Acousto-Ultrasonic Scan System. NASA/TM2002-211913. October 2002 .... What is Acousto-Ultrasonics? Acousto-ultrasonic (AU) interrogation is a single-sided ...

... prepared by the Department of Agriculture; and Public ... Step 1. Ultrasonic Scanning of Animals ... hog at other sections were found to be satis- factory. ...

... The planar view is generated by raster scanning an ultrasonic transducer over the area of interest and capturing the peak amplitude of internal ...

... MICROPROCESSOR-CONTROLLED ULTRASONIC EQUIPMENT THAT ... FROM THE WELDED JOINT. ... ECHOES FROM WELD DEFECTS ARE ...

... Title : Laser Ultrasonic Detection of Surface Breaking Discontinuities: Scanning Laser Source Technique,. Corporate Author : ...

... Accession Number : ADD008072. Title : Electronically Simulated Rotating Prism for Ultrasonic Beam Scanning. Descriptive ...

Calibrated method for ultrasonic C-scanning is based on direct correlation of gray-scale response to

... IN ACCURATE ULTRASONIC-WAVE VELOCITY MEASUREMENT BY USE ... AND LONGITUDINAL ULTRASONIC-WAVE VELOCITIES IN SOLIDS ...

The object of the study was to determine the feasibility of using ultrasonic techniques to determine the volume of fat, muscle, and bone tissue of the living body. Ultrasonic equipment, including a mechanical scanning and recording device was used to prod...

... Title : Development of Data File Standards for Automated Ultrasonic Scanning Systems. Exchange Methods for Digital Ultrasonic Inspection Data. ...

Atherosclerosis is the main cause of circulatory diseases such as myocardial infarction and cerebral infarction, and it is very important to diagnose atherosclerosis in its early stage. In the early stage of atherosclerosis, the luminal surface of an arterial wall becomes rough because of the injury of the endothelium [R. Ross: New Engl. J. Med. 340 (2004) 115]. Conventional ...

The ultrasonic imaging system described herein was developed to measure chest-wall thickness and the percentage of fat in the chest and around other body organs. The system uses pulse-echo techniques to transmit and detect sound waves reflected from the interfaces of body organs and adjacent tissue. A computer draws these interfaces on color scans, and a ...

... ULTRASONIC SCANNING SYSTEM FOR NONDESTUCTIVE IN-PLACE, NON-IMMERSION TESTING OF BRAZED JOINTS IN STAINLESS-STEEL ...

... Title : Preliminary Development of Ultrasonic C-Scan Test Methods and Standards to Determine Projectile-Rotating Band Integrity. ...

... Accession Number : ADD311322. Title : P-SCAN SYSTEM FOR ULTRASONIC WELD INSPECTION. Corporate Author : ...

... Title : HIGH-SPEED CONSOLIDATED B-SCAN ULTRASONIC RAIL ... INTERFACE AND ALLOWS RAIL INSPECTION SPEEDS UP TO ...

A computerized ultrasonic scanning bridge has been developed for the scanning and imaging of defects in structures. The raster scanning pattern can be implemented with any pair of the six available axes. The digitized ultrasonic signal can be imaged using a Peritek Graphics system. Details of ...

... Title : Use of Automated Scanning and Data Acquisition Equipment for Ultrasonic Inspection of Piping Systems and Components,. ...

... Title : P-SCAN DOCUMENTATION, A NEW METHOD FOR RECORDING AND VISUALIZING DATA FROM ULTRASONIC WELD INSPECTION. ...

... Abstract : This paper presents research work on development of a log scanning system for the use of softwood sawmills. ...

Modeling the acoustical process of soft biological tissue imaging and understanding the consequences of the approximations required by such modeling are key steps for accurately simulating ultrasonic scanning as well as estimating the scattering coefficient of the imaged matter. In this document, a linear solution to the inhomogeneous ...

This document defines the functions and requirements for a ultrasonic scanning system to provide an examination of the knuckle region of Hanford's double shell waste tanks, This document provides the basis for the ultrasonic concept selection, design, fabrication, and deployment methodology.

This paper describes a new ultrasonic holographic imaging method, UHB imaging (ultrasonic holographic B-scan imaging) invented by the author in the University of Oulu. The starting point was an attempt to improve the lateral resolution of conventional ult...

... Title : NONDESTRUCTIVE EXAMINATION OF NUCLEAR POWER PLANT COMPONENTS WITH P-SCAN ULTRASONIC EQUIPMENT. ...

An electro-mechanical scanning assembly was designed and fabricated for the purpose of generating an

... Abstract : A SYSTEM DEVELOPED BY THE NDE GROUP OF THE LOS ALAMOS SCIENTIFIC LABORATORY FOR THE AUTOMATED SCANNING ...

... AFTER TRANSMISSION, AND THE Y DEFLECTION CORRESPONDS TO THE ELEMENT LOCATION AND THEREFORE THE ULTRASONIC BEA. ...

Reflections in ultrasonic A-scan signatures of beef carcasses indicate USDA grade. Since reflections

A system configuration has been determined for scan control, data acquisition, and real-time analysis for ultrasonic inspection of a weld in the secondary loop at FFTF. This system will significantly decrease time requirements for inspection and reduce data storage by utilizing a host computer to coordinate activities of dedicated stations. Acceptance ...

... KNOWING THE PROBE ANGLE, A PARAMETER DIFFICULT TO MEASURE ACCURATELY AND ... FROM DIFFERENT ANGLES, THUS REDUCING ...

... FLAWS ACCURATELY WITH ULTRASONICS, IT IS NECESSARY TO HAVE SUFFICIENT RESOLUTION IN EITHER THE TIME OR FREQUENCY ...

The accurate measurement of transuranic elements deposited in the lung is a complex task. One of the problems is measuring uranium-L x-rays associated with plutonium passing through the chest of an accidentally exposed subject. Because the normal human chest-wall thickness varies from about 1 to 4.5 cm, it is important that an accurate determination be ...

There are two approaches to three-dimensional (3D) image reconstruction using a 1D array ultrasonic transducer: mechanical linear scanning and free-hand scanning. Mechanical scanning employs a motorized mechanism to translate the transducer linearly. However, the large size and weight of the ...

A review is made of the pulse-echo method of ultrasonic imaging as a technique in nondestructive evaluation. A discussion on the image formation of A-, B-, C-scans and three-dimensional display is included. Scanning patterns obtained from a testing block ...

Improving the resolution and specificity of current ultrasonic imaging technology can enhance its relevance to detection of early-stage breast cancers. Ultrasonic evaluation of breast lesions is desirable because it is quick, inexpensive, and does not expose the patient to potentially harmful ionizing radiation. Improved image quality and resolution ...

Interference fringes due to bondline thickness variation were observed in ultrasonic scans of the reflected echo amplitude from the bondline of adhesively joined aluminum skins. To demonstrate that full-field interference patterns are observable in point-by-point ultrasonic scans, an optical setup for ...

... for the shear strength of adhesively bonded poly-rubber-steel concentric cylinders ... by using a high-speed PC-based transmission ultrasonic C-Scan ...

... regions are areas of higher porosity. ... Variation of ultrasonic velocity with fiber volume ... 5.11 Ultrasonic polar backscatter scan showing unidirectional ...

... Title : Development and Application of Ultrasonic Dry-Contact and Air-Contact C-Scan Systems for Nondestructive Evaluation of Aerospace ...

... Title : A Matrix Element of a Solid State Ultrasonic Image Converter Using a Light Emitting Diode in a Non-Scanning Display. ...

Jun 16, 2011 � Consequently, this study has sought: (1) to demonstrate that pallet part defects can be accurately circumscribed by ultrasonic testing, ...

Pulse-echo ultrasonic testing is an important method for nondestructive inspection of materials and for detecting and characterizing defects. There is still a need for the development of robust and accurate inversion algorithms, especially for the case of...

... ultrasonic inspection for process control and failure analysis will now have an alternative, highly accurate imaging method commercially available. ...

Recently, cardiovascular disease has become the second most common cause of death in Japan following malignant neoplasm formation. Therefore, it is necessary to diagnose atherosclerosis during its early stages because atherosclerosis is one of the main causes of cardiovascular diseases. The carotid sinus is a site that is easily affected by atherosclerosis [C. K. Zarins et al.: Circ. Res. 53 ...

Three patients had internal biliary leakage demonstrated by hepatobiliary scintigraphy. In two, it was secondary to trauma and in one patient, it was related to spontaneous bile leakage of unknown causation. Although ultrasound of the abdomen is a highly accurate modality for the detection and anatomic localization of cystic collections, the ultrasonic ...

The effects of scanning variables such as scanning speed, contact pressure, and couplant viscosity and their impact on ultrasonic amplitude response were considered. In addition, the surface adherence with repeated scanning was investigated for the commonly used couplants. We employed the results of this ...

To fully utilize an engineering material it is necessary to know and understand the total mechanical behavior of the material, both damaged and undamaged. This paper addresses the effect of impact damage on the tensile properties of a laminated carbon-epoxy angle-ply composite and its relationship to ultrasonic scanning data. Numerous coupons at various ...

This report describes an effort to generate the correlation data necessary to establish ultrasonic standards and specifications for the inspection of brazed and weld overlay joints of artillery shell rotating bands. Ultrasonic pulse-echo C-scan tests were...

The application of magnetic fluids (MF) for providing acoustic contact in ultrasonic testing is considered. The results are reported of research studies of MF acoustic properties, their influence on the non-destructive testing unit acoustic line and fluid losses in ultrasonic scanning.

The ultrasonic imaging project's purpose is to increase resolution and produce accurate graphic ultrasonic images. Sub projects directed at achieving these goals are: (1) mathematical modeling of elastic wave scattering for realistic defects, (2) developi...

Conventional ultrasonic inspection operates by sending a beam of ultrasound pulses into the medium being examined. Any defects, for example holes or cracks, produce echoes whose range can be measured accurately; however, because the ultrasonic beam cannot...

In this paper, a customized classifier is presented for the industry-practiced nondestructive evaluation (NDE) protocols using a hybrid-fuzzy inference system (FIS) to classify the corrosion and distinguish it from the geometric defects or normal/healthy state of the steel pipes used in the gas/petroleum industry. The presented system is hybrid in the sense that it utilizes both soft computing ...

Holograms of ultrasonic sound fields in water were recorded on film using a scanning technique. Reconstruction of the hologram in a coherent light beam forms the optical analog of the original sound field and permits the imaging of objects as seen by ultr...

The NDT divisions at SNLA are continually striving to anticipate customer requests by adding advanced test facilities. This paper describes a new ultrasonic testing system being developed in Albuquerque to provide precise scanning of smaller test objects....

This citation summarizes a one-page announcement of technology available for utilization. An ultrasonic Doppler-effect instrument measures the flow rates of slurries in pipes. The instrument functions accurately regardless of the temperature, pressure, co...

... of 450 KC. Additionally, attempts have been made to drive a lucite cell with a barium titanate transducer. Finally, a high ...

... the cell. (Author). Descriptors : , TRANSDUCERS, OPTICAL EQUIPMENT COMPONENTS, LIGHT, PHOTOELECTRIC CELLS(SEMICONDUCTOR ...

For steam systems, ultrasonic scans should be performed on steam traps. ...... conveyors; piping; valves; steam systems; air handlers; chiller and boiler ...

... which have been developed for the automated inspection of nuclear plants. ... Some of the problems encountered in the analysis of defect signals in ...

... search and analysis capabilities across ... BY BANDWIDTH AND DIGITAL TRANSFORM CHARACTERISTICS. ... SCAN AND FREQUENCY-STEPPING ...

... Title : Quantitative Mapping of Pore Fraction Variations in Silicon Nitride Using an Ultrasonic Contact Scan Technique,. ...

... This will be followed by discussion of the experimental results using the volumetric (azimuthal angle- incidence angle-frequency) reflection ...

... Descriptors : *ULTRASONICS, *IMAGES, IMAGE PROCESSING ... SCANNING, TISSUES(BIOLOGY). ... AND MEDICAL RESEARCH ACOUSTICS. ...

... AND ULTRASONIC TECHNIQUES, WHICH RECORDED C-SCAN IMAGES OF SCATTERER TIME-OF-FLIGHT, BACKSCATTER ENERGY ...

Ultrasonic Inspection of Complex Aerospace Components Scanned Pulsed Eddy Current for Aviation Applications Study of Instructional Needs in Support of Engineering Certification...

... Title : ASSESSMENT OF TAMPER-REVEALING CERAMIC SEALS. ... AND A LABORATORY SYSTEM FOR RAPID ULTRASONIC SCANNING OF ...

System detects defects of .051 cm in diameter and larger. System incorporates scanning head assembly

Jun 16, 2011 � Date: 2000. Source: Proceedings, 4th International Conference on Image Processing and Scanning of Wood. 89-96. ...

... this preliminary study but will be critical tasks as ... A-scan), given the shallow incident angles, signals ... to the amplitude dependent C-scan approach. ...

New graphic display instruments have been developed for displaying flaws in circular parts. These instruments are used with pulse discriminators and time-to-pulse-heights converters to display B-scans, C-scans, and amplitude (analog) scans. The B-scan dis...

... In order to accurately model these different effects for ultrasonic nondestructive ... an elastic isotropic metallic core coated with thin anisotropic oxide ...

... way to introduce the sound wave into the specimen and detect the sound wave leaving the specime. ... to make accurate absorption measure- ...

... Abstract : A METHOD OF ULTRASONIC INSPECTION CALLED 'TIME-OF- FLIGHT' IS INTENDED TO PROVIDE ACCURATE SIZING OF CRACK ...

An apparatus is described for moving an ultrasonic scanning mechanism over the interior surface of a pressure vessel and comprising a mast for supporting the scanning mechanism inside the vessel and a carriage for traversing the mast within the vessel, the mast being pivotably secured to the carriage so that when the ...

The ultrasonic wave field modeling reported in this paper has been undertaken with a view to optimizing the design of a conical scanning probe microscope tip to be used in measuring the near surface elastic properties of solids at high frequencies and high spatial resolution. The modeling is concerned with the evolution of a pulse which is launched from ...

There have been proposed ultrasonic scanners in which a transducer is laterally scanned relative to a body known arrangements with lead screws for example can give rise to much vibration and have a high power requirement. It is proposed to scan with a linear motor drive. The scanning part including the transducer ...

The ultrasonic phased array inspection imaging system was developed in this paper, which is integrated on the basis of the each module and the exploitation of subsystem, it is made up of computer, ultrasonic circuit system, scanning device, phased array transducer and imaging software. The ultrasonic phased array ...

This article presents the description of PSIDD(II), a post-scan interactive data display system for ultrasonic contact scan and single measurement analysis. ...

A combined study including selective angiography of the liver and spleen, angioscintigraphy with 99mTc-TCK-5, polypositional scintigraphy with 99mTc-frosstimag-phytate, and ultrasonic scanning was conducted to detect specific liver and splenic involvement in 57 patients with Hodgkin's disease, CT was performed in 4 patients. A high diagnostic value of all ...

A research program is in progress at Rocky Flats to determine correlations between ultrasonic signal content and diffusion or eutectic bond joint condition, and to develop a computer-controlled scanning, data acquisition and analysis system which utilizes these correlations and waveform analysis techniques. The initial efforts to determine effective ...

A research program is in progress at Rocky Flats to determine correlations between ultrasonic signal content and diffusion or eutectic bond joint condition, and to develop a computer-controlled scanning, data acquisition and analysis system which utilizes these correlations and waveform analysis techniques. The initial efforts to determine effective ...

A nuclear reactor is described which comprises a reactor vessel, a core housed in the reactor vessel, an ultrasonic transducer mounted in the vicinity of the upper end of the core for emitting and receiving an ultrasonic wave pulse signal propagating above the core. A means is provided for rotating the transducer by a prescribed angle to ...

We report the singular case of an exceptionally large giant communicating artery aneurysm successfully treated with a direct surgical approach. The clinical presentation was a relatively short history of frontal headache. In the pre- and postcontrast CT scans the lesion mimicked an intracranial tumor. At surgery the intraluminal thrombus was partially removed with an ...

The research results were used to develop a high-productivity ultrasonic testing method for welds in natural-gas compressor impellers. Linear one-pass scanning was developed to improve the testing productivity.

Results are reported of a study performed to investigate the accuracy and repeatability of various ultrasonic decibel (dB) drop sizing methods in determining the length, vertical extent and orientation of artificial and real weld flaws in thin steel secti...

The on-shuttle antenna pattern of the MSBLS receiver, and the azimuth and elevation beamwidths were simulated by their corresponding ultrasonic transducer beams. The scanning rate for the azimuth and elevation beams was 1.75 degrees/second. The results we...

Specification testing of the rotating bands on the XM650 Rocket Assisted Projectile (RAP) failed to screen out inadequate bonding. This report covers the development of an ultrasonic C-scan inspection as a reliable nondestructive technique to identify poo...

A nondestructive inspection procedure utilizing ultrasonic C-scan imaging was developed to test cylindrical filament wound graphite epoxy rocket motor cases. These cylinders are part of a joint U.S. Army, Navy, NASA, and Air force (JANNAF) research round ...

Jun 14, 2001 ... Ultrasonic data display and analysis screen elements. Post-Scan Interactive Data Display (PSIDD) III is a user-oriented Windows-based system ...

A system is designed for ultrasonic testing of a pipe submerged in a liquid bath. Flaws are detected by progressively scanning the rotating pipe while it is supported along its length by a series of spaced moving guides. (D.L.C.)

Particular emphasis was placed upon developing a better understanding and control of ultrasonic focused pulse echo inspection techniques to provide maximum response to small defects and the demonstration of the feasibility of delta scan ultrasonic inspect...

This article is a brief tutorial on the benefits of volumetric ultrasonic phased array line scanning. The article describes the need, the approach, and the methods/practices used to analyze the data for flaw detection and characterization in the nuclear power plant component arena.

An ultrasonic scanning technique showed promise in locating lumber defects so they can be recorded precisely, as a step toward automated processing of lumber. As applied, the technique worked especially well with knots and steep grain. (Author)

The capabilities were investigated of projection microfocus x-radiography, ultrasonic velocity and attenuation, and reflection scanning acoustic microscopy for characterizing silicon carbide specimens. Silicon carbide batches covered a range of densities ...

Analysis of ultrasonic frequency and phase information in flaw echoes collected across a scanning aperture has shown subtle effects that are dependent on flaw configuration. These results arose from research being conducted on synthetic-aperture imaging t...

A research program is in progress at Rocky Flats to determine correlations between ultrasonic signal content and diffusion or eutectic bond joint condition, and to develop a computer-controlled scanning, data acquisition and analysis system which utilizes...

A laser imaging approach is presented that utilizes the adaptive property of photorefractive materials to produce a real-time measurement of ultrasonic traveling wave surface displacement and phase in all planar directions simultaneously without scanning....

The program goals are to design, construct, and clinically evaluate safe noninvasive ultrasonic imaging systems for detection and assessment of atherosclerotic vascular disease in carotid and femoral arteries. A combination of B-scan representation of ana...

The paper reviews the various aspects of the development of ultrasonic non-destructive testing (NDT) techniques made possible by the use of computers. Computerized control of scanning rigs, data collection, analysis and display are described. The advantag...

In ultrasonic nondestructive testing (NDT), configurations of immersion techniques where transducers radiate through non-planar interfaces are often encountered, e.g., pipe inspection where the probe can be scanned either inside or outside the pipe. When ...

A carriage-supported manipulator for taking an ultrasonic scanner mechanism into a coolant nozzle of a nuclear reactor pressure vessel is described. The manupulator is rotatable about the axis of the nozzle and is radially expansible to urge the scanner mechanism into a scanning position within the nozzle.

An advanced ultrasonic system was developed to obtain highly reproducible inspection data and to overcome certain limitations encountered with the manual scanning method. Experience from field operations from 1976 through 1980 is discussed. The scope incl...

Testing of a 24-inch line over several years has demonstrated that a single-path, contrapropagating ultrasonic flowmeter can be calibrated to accurately measure gas flow rates in large diameter pipe lines over a wide range of flows.

For advanced turbine engine propulsion systems, the need for an accurate, fast response turbine inlet gas temperature measurement is becoming more acute. One of the potentially promising techniques is the ultrasonic gas gap approach which utilizes the tra...

This report describes the results of an investigation of the performance of state-of-the-art and standard portable ultrasonic Doppler flowmeters that do not require particles or bubbles in the fluid to make an accurate measurement. oth the standard and new state-of-the-art flowme...

The purpose of the project is to validate the usefulness of SAFT UT for industrial nondestructive evaluations (NDE). SAFT UT is an ultrasonic imaging method for accurate measurement of the spatial location and extent of acoustically reflective surfaces (f...

The authors describe the design and construction of a relatively simple, inexpensive laser interferometer system for accurate measurements of ultrasonic surface displacement waveforms in reasonable friendly environments. The authors show how analysis of a...

The purpose of this study was to obtain an additional data base to determine the potential applications of NDT water-coupled ultrasonics. During previous research, several NDT methods were compared and water-coupled ultrasonics produced the most accurate ...

The purpose of this study was to obtain an additional data base to determine the potential applications of NDT water-coupled ultrasonics. Several NDT methods were compared and water-coupled ultrasonics produced the most accurate and repeatable data for th...

Accurate sphygmomanometry in shock, in infants, or in high-noise environments is not ordinarily feasible, but if an ultrasonic Doppler-shift sensor is substituted for the usual stethoscope, the detection of systolic and diastolic end points becomes relati...

Design of an ultrasonic echo-type apparatus for detection and location of flaws in three-dimensional coordinates is described. The equipment exhibits good flaw sensitivity, thin section resolution, and ability to locate flaws accurately. (J.R.D.)

Pulse-echo ultrasonic thickness gauging is now recognized as an accurate method of measuring thickness of a product from one side when the velocity of ultrasound in the material is known. The advantages and present limitation of this gauging technique are...

The possibility of inspecting reactor pressure vessel nozzle welds ultrasonically is investigated. Because of the large number of nozzles in reactor pressure vessels the aim is to develop a systematic method of examination at a practical rate with automatic recording of the ultrasonic response. To do this, high speed scanning ...

An ultrasonic inspection apparatus for weld joints of tubular bodies is designed which does not incur difficulties due to cable twist and which can be used to inspect a weld joint whose plane is oblique to the axis of the tubular body. The apparatus comprises a non-rotatable ultrasonic test probe insertable within the body, a rotatable reflector ...

A miniaturized ultrasonic scanning system for nondestructive, in-place, nonimmersion testing of brazed joints in stainless steel tubing is described. The system is capable of scanning brazed tube joints, with limited clearance access, in 1/4 through 5/8 i...

Intra-coronary ultrasonography (ICV) is a technique for in vivo study of the different layers of the arterial wall, the site of atherosclerosis. A qualitative analysis of the composition of the plaque can predict its potential evolutivity (chronic with slow progression or at risk of rupture and causing acute thrombosis) and its response to different types of angioplasty, which could eventually ...

Ultrasonic waves form a useful nondestructive evaluation (NDE) probe for determining physical, microstructural, and mechanical properties of materials and parts. Noncontacting laser ultrasonic methods are desired for remote measurements and on-line manufacture process monitoring. Researchers at the Idaho National Engineering & Environmental Laboratory ...

Ultrasonic waves form a useful nondestructive evaluation (NDE) probe for determining physical, microstructural, and mechanical properties of materials and parts. Noncontacting laser ultrasonic methods are desired for remote measurements and on-line manufacture process monitoring. Researchers at the Idaho National Engineering & Environmental Laboratory ...

A dual-channel ultrasonic inspection system has been developed for real-time three-dimensional evaluation of large area aircraft structures. High resolution imaging channel with an ultrasonic CCD camera presents large real-time planar (X-Y plane) images of the structures while another acquisition channel analyzes in-depth (Z-axis) ...

This Supplement reviews the P-scan system, a computer-based ultrasonic system used for inservice inspection of piping and other components in nuclear power plants. The Supplement was prepared using the methodology described in detail in Appendix A of NUREG/CR-5985, and is based on one month of using the system in a laboratory. This Supplement describes and ...