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首页> 外文期刊>Engineering analysis with boundary elements >Application of transverse waves to linearized inverse scattering methods in elasticity
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Application of transverse waves to linearized inverse scattering methods in elasticity

机译：横波在弹性反散射线性化方法中的应用

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摘要

The linearized inverse scattering methods based on the Born and Kirchhoff approximations are investigated with an emphasis on applicability of the transverse (T)- transverse (T) pulse-echo mode. The linearized methods for the longitudinal (L)- longitudinal (L) pulse-echo mode are first summarized for the latter use of comparison. Then the linearization process for the T-T mode is presented. In order to recognize a difference in the scattering amplitudes for the L-L and T-T modes, the backscattered waveforms are calculated for a defect model of two cavities and the effect of strong interactions is visualized for the T-T mode. The linearized inverse scattering analysis is carried out for both of the L-L and T-T modes by utilizing the whole backscattered waveforms. The performance of the geometrical reconstruction for the T-T mode inversion is discussed in comparison with the L-L mode inversion.
机译：研究了基于Born和Kirchhoff近似的线性化逆散射方法，重点是横向（T）-横向（T）脉冲回波模式的适用性。首先总结了纵向（L）-纵向（L）脉冲回波模式的线性化方法，以供后期比较使用。然后给出了T-T模式的线性化过程。为了识别L-L模式和T-T模式的散射幅度的差异，针对两个腔的缺陷模型计算了反向散射波形，并为T-T模式显示了强相互作用的效果。通过利用整个反向散射波形，对L-L和T-T模式均进行了线性化逆散射分析。与L-L模式反演相比，讨论了T-T模式反演的几何重构性能。

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