The Born approximation for the scattering theory of elastic waves by two‐dimensional flaws
作者:
D. L. Jain,
R. P. Kanwal,
期刊:
Journal of Applied Physics
(AIP Available online 1982)
卷期:
Volume 53,
issue 6
页码: 4208-4217
ISSN:0021-8979
年代: 1982
DOI:10.1063/1.331245
出版商: AIP
数据来源: AIP
摘要:
First, we present formal aspects of the scattering of plane elastic waves by a single elastic cylindrical inclusion or a cavity of an arbitrary cross section embedded in an isotropic homogeneous elastic medium of different properties. An integral equation is used to derive expressions for the displacement field valid in the entire domain. Thereafter the Born approximation for the solution is derived. Formulas for the scattered amplitudes and the scattering cross sections are presented. The validity of the approximation is examined by comparing the results with those of the simple bodies for which the exact solutions are available in the literature. Some new results for the corresponding three‐dimensional case are also presented.
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