基于功率谱形心SWF的SRM复合材料壳体脱粘缺陷识别方法  

Debonding defect identification method of SRM composite shell based on the power spectral centroid of SWF

作　　者：艾春安[1] 曾一平 李剑[1] 徐志高[1] 彭炯 

机构地区：[1]第二炮兵工程大学,西安710025

出　　处：《固体火箭技术》2012年第6期833-837,共5页Journal of Solid Rocket Technology

摘　　要：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。The acousto-ultrasonic method was used for detecting gap-type debonding and close-type debonding of SRM composite shell.On the basis of comprehensive analysis of different debonding type and frequency domain waveforms,the power spectral centroid SWF method was put forward to characterize the debonding type.The experimental results show that the power spectral centroid SWF can effectively identify two types of debonding.

关 键 词：声-超声 应力波因子 功率谱形心 脱粘 缺陷识别 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]