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dc.contributor.authorChu, Dezhang
dc.contributor.authorStanton, Timothy K.
dc.contributor.authorPierce, Allan D.
dc.date.accessioned2008-08-14T18:42:00Z
dc.date.available2008-08-14T18:42:00Z
dc.date.issued2007-12
dc.identifier.citationJournal of the Acoustical Society of America 122 (2007): 3177-3194en
dc.identifier.urihttp://hdl.handle.net/1912/2333
dc.descriptionAuthor Posting. © Acoustical Society of America, 2007. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 122 (2007): 3177-3194, doi:10.1121/1.2783001.en
dc.description.abstractA cw solution of acoustic diffraction by a three-sided semi-infinite barrier or a double edge, where the width of the midplanar segment is finite and cannot be ignored, involving all orders of diffraction is presented. The solution is an extension of the asymptotic formulas for the double-edge second-order diffraction via amplitude and phase matching given by Pierce [A. D. Pierce, J. Acoust. Soc. Am. 55, 943–955 (1974)]. The model accounts for all orders of diffraction and is valid for all kw, where k is the acoustic wave number and w is the width of the midplanar segment and reduces to the solution of diffraction by a single knife edge as w→0. The theory is incorporated into the deformed edge solution [Stanton et al., J. Acoust. Soc. Am. 122, 3167 (2007)] to model the diffraction by a disk of finite thickness, and is compared with laboratory experiments of backscattering by elastic disks of various thicknesses and by a hard strip. It is shown that the model describes the edge diffraction reasonably well in predicting the diffraction as a function of scattering angle, edge thickness, and frequency.en
dc.description.sponsorshipThis work was supported by the US Office of Naval Research and by the Woods Hole Oceanographic Institution.en
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.relation.urihttps://doi.org/10.1121/1.2783001
dc.subjectAcoustic wave diffractionen
dc.subjectAcoustic wave scatteringen
dc.subjectBackscatteren
dc.subjectUnderwater sounden
dc.titleHigher-order acoustic diffraction by edges of finite thicknessen
dc.typeArticleen
dc.identifier.doi10.1121/1.2783001


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