Lamb Waves Inspection Based on Cross-shaped Array and 2D-MUSIC Algorithm - 文章详情页

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A　cross-shaped　array　which　was　composed　of　piezoelectric　sensors　was　used　for　the　excitation　and　reception　of　Lamb　wave　signals.　A　two-dimensional　multiple　signal　classification　(2D-MUSIC)　method　was　proposed　to　locate　and　detect　defects　in　aluminum　plates.　Firstly,　the　appropriate　excitation　frequency　was　selected　for　the　generation　of　a　single　mode　signal　to　avoid　the　influences　of　multi-mode　and　reduce　the　dispersion　of　Lamb　waves.　Then,　received　signals　were　segmented　by　2D-MUSIC　algorithm.　Finally,　reflected　signals　and　2D　steering　vectors　were　combined　to　locate　the　defects　in　the　aluminum　plate.　The　results　show　that　the　proposed　2D-MUSIC　algorithm　is　more　accurate　than　traditional　multiple　signal　classification　algorithm　for　defecting　locations　in　aluminum　plates.　©　2020,　China　Mechanical　Engineering　Magazine　Office.　All　right　reserved.

关键词：

Aluminum Aluminum plating Computer music Defects Surface waves Ultrasonic waves

作者机构：

[ 1 ] [Liu, Zenghua]Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Liu, Zenghua]Beijing Engineering Research Center of Precision Measurement Technology and Instruments, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Zhang, Tingting]Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Zhang, Tingting]Beijing Engineering Research Center of Precision Measurement Technology and Instruments, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Su, Ruixiang]Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
[ 6 ] [Su, Ruixiang]Beijing Engineering Research Center of Precision Measurement Technology and Instruments, Beijing University of Technology, Beijing; 100124, China
[ 7 ] [Chen, Honglei]Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
[ 8 ] [Chen, Honglei]Beijing Engineering Research Center of Precision Measurement Technology and Instruments, Beijing University of Technology, Beijing; 100124, China
[ 9 ] [He, Cunfu]Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
[ 10 ] [He, Cunfu]Beijing Engineering Research Center of Precision Measurement Technology and Instruments, Beijing University of Technology, Beijing; 100124, China
[ 11 ] [Wu, Bin]Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
[ 12 ] [Wu, Bin]Beijing Engineering Research Center of Precision Measurement Technology and Instruments, Beijing University of Technology, Beijing; 100124, China

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