Ultrasonic Flaw Characterization in the Resonance Region by the Boundary Integral Equation Method
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
When the wavelength of the ultrasound being used to characterize a flaw is of the same order of magnitude as the flaw size, conventional low and high frequency scattering approximations fail. In this frequency range, called here the resonance region, numerical methods are necessary. Here we show that one such method, the Boundary Integral Equation (BIE) Method, is an effective tool for solving elastic wave scattering problems in the resonance region provided some important modifications are made in the method as used previously by other authors. To illustrate the BIE method, scattering from a cylindrical void in two-dimensions is considered. Comparisons are given with complimentary analytical and experimental results.