能動的パルスエコー法に対する時間反転法による欠陥同定

-実験的検証-

抄録

The applicability of the active pulse echo method to defect identification was investigated. In this method, ultrasonic waves are activated by applying an electric pulsed to the piezo film and waves reflected at crack tip are received on the piezoelectric film. To estimate the crack tip location the time reversal method was applied. The effectiveness of the method was verified by numerical simulations. The influence of the probe arrangement on the crack identification was investigated. The method was applied to actual data. The effectiveness of the method was confirmed.