3.8 Proceedings Paper

3-D Forward and Inverse Scattering Analyses for Cavity in Viscoelastic Media Using Convolution Quadrature Time-Domain Boundary Element Method

出版社

SPRINGER-VERLAG SINGAPORE PTE LTD
DOI: 10.1007/978-981-16-8185-1_4

关键词

Convolution quadrature time-domain boundary element method; Viscoelastodynamics; Inverse scattering analysis; Born approximation

资金

  1. Joint Usage/Research Center for Interdisciplinary Large-scale Information Infrastructures
  2. High Performance Computing Infrastructure in Japan [jh200052-NAH, jh210033-NAH]
  3. [JPJSBP1 20207707]

向作者/读者索取更多资源

This research presents forward and inverse scattering analyses for a cavity in 3-D viscoelastic media. The scattered waveforms obtained by CQBEM in the time domain are transformed into frequency-domain waveforms, which are then used to reconstruct a cavity in 3-D viscoelastic media. Numerical results are shown to validate the proposed methods.
In this research, forward and inverse scattering analyses for a cavity in 3-D viscoelastic media are presented. After the formulation for a forward analysis using the convolution quadrature time-domain boundary element method (CQBEM) for 3-D viscoelastodynamics is discussed, a linearized inverse scattering analysis based on the Born approximation for a cavity in 3-D viscoelastic media is introduced. The scattered wave forms in time-domain obtained by the CQBEM are transformed into those in frequency-domain, and their transformed data are utilized to reconstruct a cavity in 3-D viscoelastic media. Some numerical results for a cavity obtained by these forward and inverse scattering analyses are shown to validate the proposed methods.

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