The analysis of crack locating in pipes using time-reversal guided waves - 文章详情页

作者：

Deng, Fei (Deng, Fei.) | Wu, Bin (Wu, Bin.) | He, Cunfu (He, Cunfu.) (学者：何存富)

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摘要：

The　temporal-spatial　focusing　effect　of　the　time　reversal　method　on　the　guided　wave　inspection　in　pipes　is　investigated　theoretically　with　a　transfer　function.　The　amplitude　of　the　time　reversed　wave　propagating　along　the　pipe　is　analyzed.　The　result　demonstrated　that　the　time　reversal　method　can　be　used　to　enhance　the　inspection　energy　for　the　guided　wave　inspection　in　pipes　and　to　locate　the　defects　in　circumferential　direction.　Based　on　that,　a　method　to　identify　defects　is　described　with　experiment　results.　When　the　time　reversed　signals　getting　from　the　guided　wave　inspection　experiment　are　applied　on　a　numerical　model,　the　defect　can　be　recognized　by　the　motion　of　the　time　reversed　wave　propagating　along　the　pipe　model.

关键词：

Acoustic variables measurement Transfer functions Acoustic wave propagation Guided electromagnetic wave propagation

作者机构：

[ 1 ] [Deng, Fei]College of Mechanical Engineering and Applied Electronic Technology, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Wu, Bin]College of Mechanical Engineering and Applied Electronic Technology, Beijing University of Technology, Beijing 100022, China
[ 3 ] [He, Cunfu]College of Mechanical Engineering and Applied Electronic Technology, Beijing University of Technology, Beijing 100022, China

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