Scattering characteristics of Lamb waves from debondings at structural features in composite laminates
Scattering characteristics of Lamb waves from debondings at structural features in composite laminates
复制标题
DOI：
10.1121/1.4728192
复制
发表时间：
2012-07-01
影响因子：
2.4
通讯作者：
Veidt, Martin
中科院分区：
文献类型：
--
作者：
Ng, Ching-Tai;Veidt, Martin
本文研究了复合材料层合板结构特征处脱粘引起的兰姆波散射特性。本研究着重于利用低频基反对称（A(0)）兰姆波作为入射波进行脱粘检测。利用三维有限元模拟和实验测量对散射现象进行了研究。仿真结果与实验结果吻合较好。为了进一步研究散射振幅与脱粘尺寸之间的关系，进行了详细的参数研究。结果表明，散射A(0) Lamb波的幅值对脱粘大小敏感，表明低频A(0) Lamb波作为脱粘检测和监测的询问波具有潜力。该研究结果为散射现象提供了更好的物理见解，这对于进一步推进损伤检测技术和优化传感器网络非常重要。(C) 2012美国声学学会。[http://dx.doi.org/10.1121/1.4728192]
This article investigates the scattering characteristics of Lamb waves from a debonding at a structural feature in a composite laminate. This study specifically focuses on the use of the low frequency fundamental antisymmetric (A(0)) Lamb wave as the incident wave for debonding detection. Three-dimensional finite element (FE) simulations and experimental measurements are used to investigate the scattering phenomena. Good agreement is obtained between the FE simulations and experimental results. Detailed parameter studies are carried out to further investigate the relationship between the scattering amplitudes and debonding sizes. The results show that the amplitude of the scattered A(0) Lamb wave is sensitive to the debonding size, which indicates the potential of using the low frequency A(0) Lamb wave as the interrogating wave for debonding detection and monitoring. The findings of the study provide improved physical insights into the scattering phenomena, which are important to further advance damage detection techniques and optimize transducer networks. (C) 2012 Acoustical Society of America. [http://dx.doi.org/10.1121/1.4728192]