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为了对激光冲击强化过程和材料的强化效果进行监控,提出了一种基于等离子体声波的声学诊断方法。通过利用小波包对于所探测到的等离子体声波信号进行能量分布和相关性分析,总结了等离子体声波信号的频域特征以及约束层对于声波信号的影响。
In order to monitor the laser shock enhancement process and the material strengthening effect, an acoustic diagnosis method based on the plasma acoustic wave is proposed. By using the wavelet packet to analyze the energy distribution and the correlation analysis of the detected plasma acoustic signals, the frequency domain features of the plasma acoustic signals and the influence of the constraining layers on the acoustic signals are summarized.