Scattering of Rayleigh Surface Waves from Partly-Closed Surface-Breaking Cracks

dc.contributor.author Visscher, William
dc.date 2018-02-14T05:29:27.000
dc.date.accessioned 2020-06-30T06:29:56Z
dc.date.available 2020-06-30T06:29:56Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 1984
dc.date.issued 1984
dc.description.abstract <p>A method, involving the expansion in localized functions (ELF) of the crack-opening-displacement in a boundary integral representation of the elastic displacement in a flawed half-space, is applied to the calculation of elastic wave scattering from surface cracks in a two-dimensional geometry. The positions of the localized functions can be controlled in order to simulate cracks with various numbers of islands of closure. The Rayleigh backscattering from a surface-breaking crack changes dramatically at some frequencies as the crack is partially closed from the tip, consistent with recent observations. For the open surface-breaking crack, the calculations reproduce the positions of the known peaks in the reflection coefficient at kL = 1, π, 3 π. The amplitude of the kL = 1 peak is sensitive to certain parameters of the model. The potential usefulness of this method lies in its flexibility and in the fact that it can be straightforwardly applied in 3d.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/qnde/1984/allcontent/17/
dc.identifier.articleid 2325
dc.identifier.contextkey 5793367
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/1984/allcontent/17
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/58641
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/qnde/1984/allcontent/17/1984_VisscherW_ScatteringOfRayleigh.pdf|||Fri Jan 14 21:09:43 UTC 2022
dc.source.uri 10.1007/978-1-4684-1194-2_17
dc.subject.disciplines Acoustics, Dynamics, and Controls
dc.title Scattering of Rayleigh Surface Waves from Partly-Closed Surface-Breaking Cracks
dc.type event
dc.type.genre article
dspace.entity.type Publication
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