2021 Volume 77 Issue 2 Pages I_47-I_57
In this study, we develop linearized inverse scattering analyses for 2-D viscoelastodynamics and attempt to reconstruct shape and position of domain and boundary type defects in viscoelastic media. Inverse scattering formulations to reconstruct domain and boundary type defects in viscoelastic media are derived using the Born and Kirchhoff approximations. The scattered waves required for the inverse scattering analysis are calculated by the convolution quadrature time-domain boundary element method (CQBEM) which can produce high accurate and stable numerical solutions even no time-domain fundamental solutions are known for the problem, such as viscoelastic wave propagation. After the formulations for 2-D linearized inverse scattering analysis for domain and boundary type defects in viscoelastic media are shown, some numerical results for these defects are shown to validate the proposed methods.
