随着科学技术的不断进步和发展,越来越多的新型复合材料构件在工业制造过程中被采用,然而复合材料在服役过程中一旦损坏将造成巨大的损失,因此对复合材料的结构健康检测显得十分重要.将布拉格光纤光栅(FBG)传感技术应用于玻璃纤维复合材料薄板检测,采用主动冲击的方式在玻璃纤维复合材料板上激励声波,采集损伤前后的冲击响应信号,研究了基于小波包能量谱冲击响应的损伤识别.通过小波包分解,得到损伤前后的小波能量谱变化比直方图,比较图中各阶小波包能量比,能够实现复合材料的损伤识别.
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