Identification of delamination position in cross-ply laminated composite beams using S0 Lamb mode
Identification of delamination position in cross-ply laminated composite beams using S0 Lamb mode
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DOI：
10.1016/j.compscitech.2007.10.015
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发表时间：
2008-05-01
影响因子：
9.1
通讯作者：
Fukunaga, Hisao
中科院分区：
文献类型：
--
作者：
Hu, Ning;Shimomukai, Takahito;Fukunaga, Hisao
在这项工作中，开发了一种基于Lamb波的交叉层合梁分层检测技术。通过测量So Lamb模式的传播速度和从分层点反射的信号的传播时间，可以识别分层的位置。实验还证实，在不参考基线信号的情况下，仅使用含缺陷波束中传感器收集的数据即可准确确定分层的位置。最后，为了更好地理解兰姆波与长分层之间的复杂相互作用，采用有限元方法进行了数值模拟。对分层边界处产生的信号模式进行了分析。(C) 2007 Elsevier Ltd.版权所有。
In this work, a Lamb wave based technique has been developed for delamination detection in cross-ply laminated beams. By measuring the propagation speed of So Lamb mode and the traveling time of a signal reflected from a delamination site, the location of the delamination can be identified. It has been also confirmed by the experiment that the location of a delamination can be accurately determined by only using the data collected from the sensors in a defect-containing beam, without referring to the baseline signals. Finally, to gain a better understanding of the complex interaction between a Lamb wave and a long delamination, numerical simulations have been carried out using finite element method (FEM). The signal modes generated at the boundaries of the delamination have been analyzed. (C) 2007 Elsevier Ltd. All rights reserved.