文献类型：期刊文献

英文题名：Damage localization in thin-walled WGF/Epoxy composite laminates using guided wave by probabilistic imaging algorithm

作者：Yang, B.[1]; Hu, C.J.[1]; Wu, Y.[2]; Xiang, Y.X.[1]; Xuan, F.-Z.[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China; [2] Nanchang Institute of Technology, School of Civil and Architectural Engineering, Nanchang, China

年份：2018

起止页码：317

外文期刊名：Proceedings of the 7th Asia-Pacific Workshop on Structural Health Monitoring, APWSHM 2018

收录：EI(收录号：20191706837223)

语种：英文

外文关键词：Thin walled structures - Laminated composites - Surface waves - Ultrasonic waves - Weaving - Guided electromagnetic wave propagation - Damage detection - Piezoelectricity

摘要：We proposed a probabilistic imaging algorithm to capture the damage location information in woven glass fabric reinforced epoxy (WGF/Epoxy) composite laminates. The stacking sequence of the composite laminates is [90o/0o]4. Lamb wave propagation theory, thickness effect and slowness profile phenomenon were investigated before the damage localization process were performed. Four piezoelectric wafers were used for exciting and acquiring Lamb wave signals with pitch-catch configuration. Scattered signals were calculated according to the difference between healthy and damaged signals. Relying on temporal information of the scattered signal, the algorithm was constructed to highlight the most possible damage location. Finite element and experimental works were carried out to verify the feasibility of the algorithm. Results showed that the developed approach has satisfied application potential in finding the through hole position in WGF/Epoxy laminates. ? APWSHM 2018. All rights reserved.