Research on three-dimensional shape reconstruction of circular cylindrical flaw

被引：2
作者：
Zheng Gangfeng [1 ,2 ]
Wu Bin [1 ]
He Cunfu [1 ]
机构：
[1] Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100022, Peoples R China
[2] Anhui Univ Sci & Technol, Dept Mat Sci & Engn, Huainan 232001, Peoples R China
来源：
APPLIED ACOUSTICS | 2008年 / 69卷 / 11期
基金：
北京市自然科学基金; 中国国家自然科学基金;
关键词：
finite element; Born approximations; shape reconstruction; scattering;
D O I：
10.1016/j.apacoust.2007.08.005
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
In this article, three-dimensional Born inverse scattering method is modified to convenient form for a cylindrical specimen that includes three-dimensional defect. One aluminum cylinder with flaw model is prepared and ultrasonic measurements are carried out. The measurement area in the modified methods is restricted in the plane perpendicular to the axis of cylindrical specimen. That's to say that the method is modified to convenient form to use measured waveforms in the x(1) - x(2) plane. The measured wave data are fed into the inversion method and cross-sectional images are obtained. Then, three-dimensional shape reconstruction of flaw model in aluminum specimen is performed by piling up the cross-sectional images. At the same time, we get the numerical results from all directions by finite element method. (C) 2007 Elsevier Ltd. All rights reserved.
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页码：960 / 965
页数：6
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