第一部門：物理数学力学問題 （B）

[S01B-04] 2-D linearized inverse scattering analysis for domain and boundary type defects in viscoelastic media

*Haruhiko Takeda¹, Takahiro Saitoh¹, Sohichi Hirose² (1. Gunma University, 2. Tokyo Institute of Technology)

Keywords:Inverse scattering analysis, Viscoelastodynamics, Convolution quadrature time-domain boundary element method, Born approximation, Kirchhoff approximation

This study presents 2-D linearized inverse scattering analysis for domain and boundary type defects in viscoelastic media. The linearized inverse scattering analyses based on the Born and Kirchhoff approximations are applied to defects in viscoelastic media. The scattered wave forms used in these inverse scattering analyses are calculated by the convolution quadrature time-domain boundary element method (CQBEM). Some numerical examples for defects in viscoelastic media are shown to validate the proposed methods.