On an inverse elastic wave imaging scheme for nearly incompressible materials
On an inverse elastic wave imaging scheme for nearly incompressible materials
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近不可压缩材料的逆弹性波成像方案
DOI:
10.1093/imamat/hxy056
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发表时间:
2017-11
影响因子:
1.2
通讯作者:
Sun Hongpeng
中科院分区:
文献类型:
--
作者:
Li Jingzhi;Liu Hongyu;Sun Hongpeng
This paper is devoted to the algorithmic development of inverse elastic scattering problems. We focus on reconstructing the locations and shapes of elastic scatterers with known dictionary data for the nearly incompressible materials. The scatterers include non-penetrable rigid obstacles and penetrable mediums, and we use time-harmonic elastic point signals as the incident input waves. The scattered waves are collected in a relatively small backscattering aperture on a bounded surface. A two-stage algorithm is proposed for the reconstruction and only two incident waves of different wavenumbers are required. The unknown scatterer is first approximately located by using the measured data at a small wavenumber, and then the shape of the scatterer is determined by the computed location of the scatterer together with the measured data at a regular wavenumber. The corresponding mathematical principle with rigorous analysis is presented. Numerical tests illustrate the effectiveness and efficiency of the proposed method.
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DOI:
10.1007/978-1-4613-4277-9_4
发表时间:
1976
期刊:
--
影响因子:
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作者:
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通讯作者:
T. Dawson
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DOI:
10.1115/1.3153629
发表时间:
1980-03
期刊:
Journal of Applied Mechanics
影响因子:
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DOI:
10.1016/j.cma.2008.07.014
发表时间:
2008-10
影响因子:
7.2
作者:
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通讯作者:
K. Srinivasan;K. Matous;P. Geubelle
DOI:
10.1016/b978-0-12-816945-2.00010-9
发表时间:
2021
期刊:
Mathematical Modeling of Swimming Soft Microrobots
影响因子:
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作者:
I. Khalil;A. Klingner;S. Misra
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I. Khalil;A. Klingner;S. Misra