J0420104 3次元FDTD法を用いたAE波形シミュレーション技術の開発

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  • J0420104 Development of Acoustic Emission Waveform Simulation Using 3D-FDTD Method

抄録

The acoustic emission (AE) method is one of the powerful real time health monitoring tolls. The AE source wave analysis is a method of estimating the parameters of the clack volume and cracking generation time of micro-cracks. In this study, we developed AE waveform simulation using 3D-FDTD method to apply to AE source wave analysis. Displacement waveform by displacement sensor and simulation waveforms was first compared. An artificial AE signals were produced by Hsu-Nielsen source on the thin plate with a thickness of 10 mm. A high correlation was obtained between developed AE simulation waveform and displacement waveform detected by the sensor. Simulation waveform with involving a sensor response was next compared. Sensor response was used in our previous study. Waveform characteristics between simulation and experiment were similar, however, correlation was low. Correlation between wavelet contourmap of these waveform were also low. These were occurred by sensor response.

収録刊行物

  • 年次大会

    年次大会 2015 (0), _J0420104--_J0420104-, 2015

    一般社団法人 日本機械学会

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