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Proceedings Paper

Recent Developments In Diffraction Theory And Their Effect On The Design Of Ultrasonic Inspection Systems
Author(s): Jon L. Opsal
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Paper Abstract

Significant recent developments in elastic wave scattering theory are discussed in terms of their effect on the use of ultrasonics for quantitative flaw characterization in structural materials. The discussion begins with an introduction on nondestructive evaluation (NDE) describing the need for a quantitative ultrasonics technology that includes a knowledge of the fundamental ultrasound-flaw interaction and the ability to apply that knowledge in practice. Our present level of understanding is then illustrated using several examples of theoretical results for both direct and inverse scattering problems. Very little mathematical detail is employed in the discussion with the emphasis placed, rather, on graphically displaying results and showing differing effects for different scatterers. Concluding the discussion is a description of a new, sophisticated ultrasonic test instrument, an ultrasonic test bed, under construction at the Lawrence Livermore National Laboratory. This facility, when completed, will allow for the testing and practical implementation of existing and emerging advanced ultrasonic concepts such as described here.

Paper Details

Date Published: 26 February 1982
PDF: 7 pages
Proc. SPIE 0294, New Methods for Optical, Quasi-Optical, Acoustic, and Electromagnetic Synthesis, (26 February 1982); doi: 10.1117/12.932349
Show Author Affiliations
Jon L. Opsal, Lawrence Livermore National Laboratory (United States)

Published in SPIE Proceedings Vol. 0294:
New Methods for Optical, Quasi-Optical, Acoustic, and Electromagnetic Synthesis
W. Ross Stone, Editor(s)

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