645 圧電センサ出力信号を用いた波動伝播解析による平板の衝撃検出

概要

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The time reversal processing for the measured sensor signal can be applied to detect not only structural damage but also impact loading of the structure. The impact identification capability of a time reversal processing using experimentally measured sensor signals is demonstrated in this paper. After measuring the electrical sensor signals corresponding to scattered wave filed of the plate in experimentally, the time reversal processing is applied to the measured signals in the numerical wave back propagation simulation for localizing the impact loading point on the plate. The time-reversed wave travels back through the plate and is focused on the region around a point where hit by the impact hammer. The illustrative experimental and numerical results demonstrate impact identification capability of the proposed impact detection method.
一般社団法人日本機械学会の論文
2006-08-06