Shape reconstruction of flaws using modified Kirchhoff approximation in inhomogeneous medium - 文章详情页

作者：

Zheng, G. (Zheng, G..) | Wu, B. (Wu, B..) | He, C. (He, C..)

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Scopus PKU CSCD

摘要：

The　mathematic　expression　for　scattering　cross　section　in　inhomogeneous　material　is　deduced　in　this　paper.　Then,　the　quantization　of　Kramers-Kronig　relation　in　inhomogeneous　medium　containing　scatterers　and　non-chatterers　is　given.　Based　on　the　frequency　change,　the　phase　velocity　due　to　the　inhomogeneous　material　is　introduced　into　two-dimensional　Kirchhoff　approximation　formula.　Finally,　the　flaw　shapes　in　inhomogeneous　medium　is　reconstructed　by　using　backscattered　ultrasound　through　experimental　method.　The　results　verify　the　feasibility　of　flaw　scattering　theory.

关键词：

Kirchhoff approximation; Kramers-Kronig; NDE; Shape reconstruction

作者机构：

[ 1 ] [Zheng, G.]College of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
[ 2 ] [Wu, B.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China
[ 3 ] [He, C.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China

通讯作者信息：

[Zheng, G.]College of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

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