Design of PZT cylindrical phase modulator for simulating acoustic emission signals - 文章详情页

作者：

He, Cun-Fu (He, Cun-Fu.) (学者：何存富) | Hang, Li-Jun (Hang, Li-Jun.) | Wu, Bin (Wu, Bin.)

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摘要：

For　the　convenience　of　conducting　pipeline　leak　experiment　in　laboratory,　leak　acoustic　signals　were　simulated　by　converse　piezoelectric　effect　of　a　PZT　cylindrical　phase　modulator.　In　this　paper,　we　combined　the　piezoelectric　equations　and　electromechanical　equivalence　principle　to　deliver　the　transfer　function　of　the　PZT　cylindrical　phase　modulator.　A　PZT　cylindrical　phase　modulator　was　designed,　and　numerical　simulation　was　conducted.　It　is　proved　that　the　PZT　cylindrical　phase　modulator　can　simulate　effectively　leak　acoustic　emission　signals　when　the　frequency　is　lower　than　25　kHz.

关键词：

Acoustic emissions Fiber optic sensors Piezoelectricity Leak detection Phase modulation Equivalent circuits Pipelines Computer simulation Transfer functions Modulators Signal processing

作者机构：

[ 1 ] [He, Cun-Fu]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Hang, Li-Jun]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Wu, Bin]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China

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