2002年
A 3D boundary integral equation method for ultrasonic scattering in a fluid-loaded elastic half space
REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 21A & B
- ,
- 巻
- 615
- 号
- A
- 開始ページ
- 43
- 終了ページ
- 50
- 記述言語
- 英語
- 掲載種別
- 出版者・発行元
- AMER INST PHYSICS
This paper presents a boundary integral equation method for 3D ultrasonic scattering problems in a fluid-loaded elastic half space. Since full scale of numerical calculation using finite element or boundary element method is still very expensive, we formulate a boundary integral equation for the scattered field, which is amenable to numerical treatment. In order to solve the problem using the integral equation, however, the wave field without scattering objects, so-called free field need to be given in advance. We calculate the free field by the plane wave spectral method where the asymptotic approximation is introduced for computational efficiency. To show the efficiency of our method, scattering by a spherical cavity near fluid-solid interface is solved and the validity of the results is discussed.
- リンク情報
- ID情報
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- ISSN : 0094-243X
- Web of Science ID : WOS:000177511400005