Elastodynamic Optical Theorem for the Evaluation of Scattering Cross-Sections for a Crack

dc.contributor.author Kitahara, M.
dc.contributor.author Nakagawa, K.
dc.date 2018-02-14T07:46:36.000
dc.date.accessioned 2020-06-30T06:47:56Z
dc.date.available 2020-06-30T06:47:56Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 1997
dc.date.issued 1997
dc.description.abstract <p>Scattering cross-sections are calculated for a crack in three-dimensional elastic solids. The crack opening displacements are evaluated first by the boundary element methods. Then the scattering amplitudes for the crack are derived from the far-field representations of the scattered fields. In the final step to calculate the scattering cross-sections from scattering amplitudes, two methods are compared. One is the method based on the definition and here the scattering cross-section is calculated from the integration of the differential cross-sections over the solid angle. The other is the method based on the elastodynamic counterpart of the optical theorem. It is verified that the results obtained from the elastodynamic optical theorem are accurate enough to evaluate the scattering cross-section for the crack in elastic solids.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/qnde/1997/allcontent/4/
dc.identifier.articleid 3455
dc.identifier.contextkey 5810042
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/1997/allcontent/4
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/61184
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/qnde/1997/allcontent/4/1997_KitaharaM_ElastodynamicOptical.pdf|||Fri Jan 14 23:58:15 UTC 2022
dc.source.uri 10.1007/978-1-4615-5947-4_4
dc.subject.disciplines Acoustics, Dynamics, and Controls
dc.title Elastodynamic Optical Theorem for the Evaluation of Scattering Cross-Sections for a Crack
dc.type event
dc.type.genre article
dspace.entity.type Publication
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