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Elastic wave scattering by a three-dimensional inhomogeneity in an elastic half space

Publiceringsår: 1980
Språk: Engelska
Sidor: 335-353
Publikation/Tidskrift/Serie: Wave Motion
Volym: 2
Nummer: 4
Dokumenttyp: Artikel i tidskrift
Förlag: Elsevier


In this paper we will consider scattering of elastic waves in a half space. The half space is an isotropic, linear and homogeneous medium except for a finite inhomogeneity. The T-matrix method (also called the “extended boundary condition method” or “null field approach”) is extended to derive expressions for the elastic field inside the half space and the surface field on the interface. The assumptions on the source that excites the half space are fairly weak. In the numerical applications found in this paper we assume a Rayleigh surface wave to be the incoming field, and we only compute the surface displacements. We make illustrations on some simple types of scatterers (spheres and spheroids; the latter ones can be arbitrarily oriented).


  • Electrical Engineering, Electronic Engineering, Information Engineering


  • ISSN: 0165-2125

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