Dispersion relation of Lamb waves in cross-ply composite laminates using multi-layered models
Dispersion relation of Lamb waves in cross-ply composite laminates using multi-layered models
复制标题
使用多层模型的正交复合材料层合板中兰姆波的色散关系
DOI：
10.1016/j.compstruct.2021.113691
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发表时间：
2021
影响因子：
6.3
通讯作者：
Okabe Yoji
中科院分区：
文献类型：
--
作者：
Saito Osamu;Yu Fengming;Okabe Yoji
兰姆波可以用于碳纤维增强塑料（CFRP）的结构健康监测系统和无损检测技术的建立。在这项研究中，我们研究了兰姆波在正交铺设CFRP层合板中传播的色散关系。使用多层兰姆波模型的形式主义，我们比较了均匀的单层模型和多层模型。结果表明，在低频区，所有模型的S 0模的速度是相同的。因此，均匀参数的使用对于S0模式是有效的。然而，人们发现，在高频区域，有一个均匀模型和多层模型的兰姆波模式的速度之间的差异。这是因为兰姆波可以局限于特定的层中，并且速度可以受到层的刚度常数的影响。这项工作阐明了兰姆波的传播特性，通过显示层压板的堆叠顺序可以对波的速度和波的结构产生影响，使研究人员能够提高兰姆波为基础的缺陷检测。
Lamb waves can be used in carbon fiber reinforced plastics (CFRP) for establishing both structural health monitoring systems and nondestructive inspection techniques. In this study, we investigated the dispersion relation of Lamb waves propagating in a cross-ply CFRP laminate. Using a formalism of the multi-layer Lamb wave model, we compared a homogeneous single-layer model and multi-layer models. The results suggest that the velocity of the S0mode was the same for all the models in the low-frequency region. Thus, the use of homogeneous parameters is valid for the S0mode. However, it was found that in high-frequency regions, there was a discrepancy between the velocities of Lamb wave modes for the homogeneous model and multi-layer models. This is because Lamb waves can be localized in a particular layer, and the velocity can be affected by the stiffness constants of the layer. This work elucidates the characteristics of Lamb wave propagation by showing that the stacking sequence of the laminate can have an effect on the wave velocities and wave structures, enabling researchers to improve Lamb wave-based defect detection.
DOI：
10.1145/1874391.187410
发表时间：
1987-02
期刊：
ACM SIGSOFT Softw. Eng. Notes
影响因子：
--
作者：
Will Tribbey
通讯作者：
Will Tribbey
影响因子：
5.4
作者：
Chia, Chen Ciang;Jeong, Hyo-Mi;Park, Gyuhae
通讯作者：
Park, Gyuhae