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Review of Progress in Quantitative Nondestructive Evaluation

Engineering Science and Materials

Publication Year

Articles 1 - 4 of 4

Full-Text Articles in Nuclear Engineering

Numerical Calculation Of Diffraction Coefficients In Anisotropic Media, J. Temple, L. White Jan 1993

Numerical Calculation Of Diffraction Coefficients In Anisotropic Media, J. Temple, L. White

Review of Progress in Quantitative Nondestructive Evaluation

Ultrasonic inspection is used to detect and size crack-like defects in pressure vessels and pipework used in the nuclear industry. Reliable inspection can only be achieved if the inspection technique is understood, is optimised and subsequently applied correctly. Austenitic steels are used because of their corrosion resistance and toughness. Welds and centrifugally cast materials tend to crystallise with grains larger than the ultrasonic wavelength required to achieve the desired resolution in the inspection and thus appear anisotropic. Since the grains in a weld grow along the, varying, directions of maximum heat flux during cooling, the welds are inhomogeneous as well ...


Applications Of Film Tomography Technique For Qnde, A. Notea Jan 1987

Applications Of Film Tomography Technique For Qnde, A. Notea

Review of Progress in Quantitative Nondestructive Evaluation

Tomography with X- and gamma- rays provides three-dimensional radiographic information on the examined object. The film-based tomography (1,2) generates a summation-image of a surface within the object by continuously combining back projections directly on the film. This method has many attractive features for industrial applications in which cost and simplicity are of primary importance. Some of the features are: (1) The absence of post processing allows this method to yield an image immediately on development of the film.; (2) Conventional radiologists need a short training time to master the technique as most components and concepts are familiar to them ...


Photon Ct Scanning Of Advanced Ceramic Materials, B. D. Sawicka, W. A. Ellingson Jan 1987

Photon Ct Scanning Of Advanced Ceramic Materials, B. D. Sawicka, W. A. Ellingson

Review of Progress in Quantitative Nondestructive Evaluation

Advanced ceramic materials (e. g. Si3N4, ZrO2, SiC, A12O3) are being developed for high temperature applications in advanced heat engines and high temperature heat recovery systems [1]. Although fracture toughness has been a constant problem, advanced ceramics are now being developed with fracture toughnesses close to those of metals [2]. Small size flaws (10–200 μm), small non-uniformities in density distributions (0.1–2%) present as long-range density gradients, and porous regions which can be seen as localized areas of slightly lower density, are critical in most ceramics. The need to detect these small flaws is causing a significant effort ...


Nuclear Resonance For The Nondestructive Evaluation Of Structural Materials, G A. Matzkanin Jan 1977

Nuclear Resonance For The Nondestructive Evaluation Of Structural Materials, G A. Matzkanin

Review of Progress in Quantitative Nondestructive Evaluation

It is appropriate that this presentation is in a session on new techniques because the program I will discuss this afternoon is sufficiently new that few concrete results are available to report. The program I will discuss was recently funded at Southwest Research Institute by AFOSR and involves examining the possibility of developing nuclear resonance techniques for the nondestructive evaluation of structural materials. What I hope to do this afternoon is to fill you in a bit with regard to the background involved in this program and bring you up to date regarding our research plans. I will discuss some ...