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Wedge diffraction of a critically incident Gaussian beam

TitleWedge diffraction of a critically incident Gaussian beam
Publication TypeJournal Article
Year of Publication2013
AuthorsZernov, V, Fradkin, L, Gautesen, A, Darmon, M, Calmon, P
JournalWave Motion
Volume50
Pagination708-722
Date Published06
Type of ArticleArticle
ISBN Number0165-2125
Accession NumberWOS:000318587200004
Keywordsbulk, creeping waves, diffraction, free elastic wedge, Goodier-Bishop wave, GTD, Head wave, Isotropic solid, Lateral wave, rays, scattering, Wedge
Abstract

inal modes. It is shown that when the beam hits relatively close to the wedge corner the incident field near the irradiated face can be approximated as a near grazing longitudinal wave of the Goodier-Bishop type. A recipe is offered for utilizing GTD (Geometrical Theory of Diffraction) to simulate the resulting transverse and longitudinal waves. The two-dimensional version of the above configuration is of interest in modeling ultrasonic Non-Destructive Testing and Evaluation. (C) 2013 Elsevier B.V. All rights reserved.

DOI10.1016/j.wavemoti.2013.01.004
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