A time reversal guided wave inspection method for small defects in pipes - 文章详情页

作者：

Deng, Fei (Deng, Fei.) | Wu, Bin (Wu, Bin.) | He, Cun-Fu (He, Cun-Fu.) (学者：何存富)

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摘要：

The　finite　element　method　is　used　to　investigate　the　effect　of　a　time　reversal　method　on　the　guided　wave　inspection　in　pipes.　Two　steel　pipe　models　with　different　kinds　of　defects　are　employed　to　analyze　the　reflection　coefficients　of　L　(0,　2)　mode　when　the　time　reversal　method　is　used.　The　numerical　simulations　show　that　the　temporal-spatial　focusing　effect　of　the　time　reversal　method　can　realize　energy　focusing　on　the　defect.　Therefore,　the　time　reversal　guided　wave　method　is　more　favorable　for　the　small　defect　inspection　in　pipes.

关键词：

Defects Guided electromagnetic wave propagation Inspection Numerical methods Pipe

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, Cun-Fu]College of Mechanical Engineering and Applied Electronic Technology, Beijing University of Technology, Beijing 100022, China

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