Inverse scattering analysis of elastic half space by means of the fast volume integral equation method

• Hinago Takuya

  Tokyo university of science

• Touhei Terumi

  Tokyo university of science

• MASADA Kojiro

  Tokyo university of science

Bibliographic Information

Other Title

• 高速領域積分方程式法を用いた半無限弾性波動場の散乱逆解析

Abstract

A method for the inverse scattering analysis in an elastic half space is developed by means of the fast volume integral equation method. The first kind of the Fredholm equation for the inverse scattering analysis is obtained from the volume integral equation to which the Born approximationis applied. This equation expresses  the relationship between the fluctuation of the wave field andthe observed scattered waves at  a limited region on the free surface. The fast method  is acheived by  introducing the fast algorithm for  the transform of an elastic half space to construct the Krylov subspace. The numerical calculations  are carried out to verify   the  effectiveness of the proposed method. In addition, the effects of Tikhonov regularization method is also discussed based on the numerical calculattions.

Journal

• NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan

  NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan 62 (0), 90-, 2013

  National Committee for IUTAM

Keywords

• Inverse scattering analysis,fast method, regularization
• volume integral equation
• fast method
• regularization

Details

• CRID: 1390282680569292800
• NII Article ID: 130004605169
• DOI: 10.11345/japannctam.62.0.90.0
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed