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Applied Mathematics and Mechanics

, Volume 24, Issue 6, pp 700–705 | Cite as

Variation method for acoustic wave imaging of two dimensional targets

  • Feng Wen-jie
  • Zou Zhen-zhu
Article
  • 27 Downloads

Abstract

A new way of acoustic wave imaging was investigated. By using the Green function theory of system of integral equations, which linked wave number perturbation function with wave field, was firstly deduced. By taking variation on these integral equations an inversion equation, which reflected the relation between the little variation of wave number perturbation function and that of scattering field, was further obtained. Finally, the perturbation functions of some identical targets were reconstructed, and some properties of the novel method including converging speed, inversion accuracy and the abilities to resist random noise and identify complex targets were discussed. Results of numerical simulation show that the method based on the variation principle has great theoretical and applicable value to quantitative nondestructive evaluation.

Key words

acoustic wave flaw identification perturbation function variation complex target quantitative nondestructive evaluation 

Chinese Library Classification

O354 

2000 MR Subject Classification

74J20 

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Copyright information

© Editorial Committee of Applied Mathematics and Mechanics 2003

Authors and Affiliations

  • Feng Wen-jie
    • 1
  • Zou Zhen-zhu
    • 1
  1. 1.Department of Mechanics and Engineering ScienceShijiazhuang Railway InstituteShijiazhuangP. R. China

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