摘要
针对基于Lamb波的复材板损伤指数构建困难的问题,提出了一种基于交叉递归率的损伤定位成像方法。该方法首先采用交叉递归率对各传感路径中的损伤信息进行描述,构建了基于交叉递归率的损伤指数,结合椭圆概率成像算法实现了复材板的损伤定位检测。有限元仿真与疲劳试验数据分析结果表明,该方法能实现复材板内部损伤的准确定位成像,在噪声干扰情况下仍能准确识别损伤位置。
Based on cross-recursion rate,a damage localization imaging method was proposed to address the difficulty in constructing a damage index for composite plates based on Lamb waves.This method firstly described the damage information in each sensing path by cross-recursion rate and constructed a damage index based on the cross-recursion rate.Combined with the elliptical probability imaging algorithm,the method implemented the damage localization detections of composite plates.The results of finite element simulation and fatigue test data analysis show that this method may accurately locate the internal damages of composite plates and identify the damage location even in the presence of noise interference.
作者
刘小峰
张天瑀
张春兵
柏林
LIU Xiaofeng;ZHANG Tianyu;ZHANG Chunbing;BO Lin(College of Mechanical and Vehicle Engineering,Chongqing University,Chongqing,400044)
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2023年第8期940-947,共8页
China Mechanical Engineering
基金
国家自然科学基金(51975067,52175077)。
关键词
复合材料
递归分析
特征提取
无损检测
损伤定位成像
composite material
recurrence analysis
feature extraction
non-destructive testing
damage localization imaging
