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针对SRM复合材料粘接结构间隙型脱粘和紧贴型脱粘的识别问题,运用声-超声的方法进行检测,在综合分析不同脱粘类型时域和频域波形的基础上,提出采用功率谱形心SWF表征脱粘类型。实验结果表明,功率谱形心SWF能有效地对两种脱粘类型进行识别。
Aiming at the problem of gap-type debonding and cling-type debonding in SRM composite structure, the acoustic-ultrasonic method is used to detect. Based on the comprehensive analysis of waveforms of different debonding types in time domain and frequency domain, Spectral heart SWF characterizes the type of debonding. The experimental results show that the power spectrum centroid SWF can effectively identify two types of debonding.