| 多锥结合壳流固耦合稳态动力响应分析 |
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| 引用本文： | 朱文浩,徐俊钟,伟芳. 多锥结合壳流固耦合稳态动力响应分析[J]. 华中科技大学学报(自然科学版), 1996, 0(9) |
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| 作者姓名： | 朱文浩 徐俊钟 伟芳 |
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| 作者单位： | 华中理工大学力学系 |
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| 摘 要： | 针对二维弹性波的反演问题，给出了一个同时重建三个弹性常数的层析成像方法，通过选择不同入射方向和偏振态的入射平面波，实现了三个参数的解耦，得到了相应的加权滤波反投影公式，并对一简单算例进行了数值反演模拟．
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| 关 键 词： | 逆散射；层析；Born近似；多参数解耦 |
Diffraction Tomography Imaging of the Elastic Wave in Solids |
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| Zhu Wenhao Dept. of Mechanics,HUST,Wuhan ,China. Xu Jun Zhong Weifang. Diffraction Tomography Imaging of the Elastic Wave in Solids[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1996, 0(9) |
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| Authors: | Zhu Wenhao Dept. of Mechanics HUST Wuhan China. Xu Jun Zhong Weifang |
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| Affiliation: | Zhu Wenhao Dept. of Mechanics,HUST,Wuhan 430074,China. Xu Jun Zhong Weifang |
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| Abstract: | The three parameter Bron inversion problem of 2 D elastic wave fields is discussed. With a wide band plane wave source, the scatterer is illuminated by two waves perpendicular to each other. One of them consists of P, SV and SH waves and the other of SV and SH waves only. The scattering field data are measured on a closed surface of arbitrary shape around the scatterer. By calculating the plane wave, scattering amplitudes and by combining the results obtained from two illuminations, three unknown parameters can be decoupled in a Fourier transform domain. The inversion results given are in a form of filtered back projection like X ray CT but with weighting coefficients. |
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| Keywords: | inverse scattering tomography Born approximation multi parameter decoupling |
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