Detection of Second-Harmonic Components of Lamb Waves Generated from Fatigue Plate Using a Double-Layered Piezoelectric Transducer
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概要
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Detections of second-harmonic components generated from fatigue-tested plates using finite amplitude Lamb waves were carried out using a double-layered piezoelectric transducer (DLPT) with a pulse-echo method. Three pure magnesium (Mg) plates subjected to fatigue tests of 0, 1\times 10^{5}, and 2\times 10^{5} cycles were used in this experiment. In a received waveform from the plate subjected to the fatigue test of 2\times 10^{5} cycles, a second-harmonic component was increased by 10 dB compared with that in the case of an unstressed plate. The usefulness of the DLPT system for detecting second-harmonic components of Lamb waves in the pulse-echo method was confirmed.
- 2012-07-25
著者
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Imano Kazuhiko
Department Of Electrical & Electronic Engineering Mining College Akita University
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Fukuda Makoto
Department Of Applied Photonics System Technology
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Imano Kazuhiko
Department of Electrical and Electronic Engineering, Graduate School of Engineering and Resource Science, Akita University, Akita 010-8502, Japan
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