激光与光电子学进展, 2021, 58 (5): 0514004, 网络出版: 2021-04-19
基于声表面波的V型裂纹快速检测数值研究 
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Numerical Study on Rapid Detection of V-Shaped Cracks Based on Surface Acoustic Wave
图 & 表
图 1. 上升时间为 10 ns时入射表面波的频谱
Fig. 1. Spectrum of incident surface waves at a rise time of 10 ns
图 3. 裂纹深度为0 μm、200 μm和400 μm时的位移波形图。（a）（b）左接收点处的位移波形图及其放大图；（c）右接收点处的位移波形图
Fig. 3. Displacement waveform diagrams when crack depth is 0 μm, 200 μm, and 400 μm. （a）（b） Displacement waveform diagrams of left receiving point； （c） displacement waveform diagram of right receiving point
图 5. 裂纹深度为500 μm时左接收点处的位移波形图
Fig. 5. Displacement waveform diagram of left receiving point when the crack depth is 500 μm
图 6. 裂纹深度为1000~5000 μm时左接收点的位移波形图
Fig. 6. Displacement waveform diagram of left receiving point when the crack depth is 1000‒5000 μm
图 8. 裂纹深度为6000 μm时左接收点的位移波形图
Fig. 8. Displacement waveform diagram of left receiving point when the crack depth is 6000 μm
图 10. 裂纹深度为6000 μm和7000 μm时右接收点的位移波形图
Fig. 10. Displacement waveform diagram of right receiving point when the crack depth is 6000 μm and 7000 μm
表 1有限元模型中铝的各项力学参数以及声波在铝内部的传输速度
Table1. Various mechanical parameters of aluminum and internal acoustic wave transmission speed in the finite element model
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宋大成, 张兴媛, 陈超. 基于声表面波的V型裂纹快速检测数值研究[J]. 激光与光电子学进展, 2021, 58(5): 0514004. Dacheng Song, Xingyuan Zhang, Chao Chen. Numerical Study on Rapid Detection of V-Shaped Cracks Based on Surface Acoustic Wave[J]. Laser & Optoelectronics Progress, 2021, 58(5): 0514004.
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