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利用敲击使试件产生振动,通过换能器接收试件声信号。利用频谱分析的方法识别具有不同厚度涂层试件的频率特性。结果表明,不同试件的主频不同,且与其结构尺寸有关。
The percussion is used to make the test piece vibrate and receive the test piece acoustic signal through the transducer. Frequency analysis was used to identify the frequency characteristics of coated specimens with different thicknesses. The results show that the frequency of different specimens is different, and its structure size.