Evaluation of effective elastic properties of layered composite fiber-reinforced plastic plates by piezoelectrically induced guided waves and laser Doppler vibrometry
Evaluation of effective elastic properties of layered composite fiber-reinforced plastic plates by piezoelectrically induced guided waves and laser Doppler vibrometry
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DOI：
10.1016/j.compstruct.2015.02.029
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发表时间：
2015-07-01
影响因子：
6.3
通讯作者：
Lammering, R.
中科院分区：
文献类型：
--
作者：
Eremin, A. A.;Glushkov, E. V.;Lammering, R.
提出并讨论了一种基于压电致弹性导波和激光多普勒测振仪的复合材料层合板弹性性能无损评价方法。重建过程基于由复合材料预浸料的弹性模量组定义的目标函数的遗传算法最小化。该目标函数定义了压电片有源传感器在各向异性层合板中产生的导波频散特性的理论计算与实验测量之间的偏差。用于识别的输入数据是在不同激励频率和传播方向下测量的基波兰姆波的群速度或波长。该方法已经在单向和交叉铺设的碳纤维增强塑料板上进行了试验测试，并通过常规拉伸试验进行了验证。(C)2015爱思唯尔有限公司。保留所有权利。
An approach to non-destructive evaluation of laminate composite plate elastic properties based on piezoelectrically induced elastic guided waves and laser Doppler vibrometry is presented and discussed. The reconstruction procedure is based on the genetic algorithm minimization of an objective function defined by the set of elastic moduli of the composite prepregs. The objective function defines discrepancy between theoretically calculated and experimentally measured dispersion characteristics of guided waves generated in the laminate anisotropic plate by piezoelectric wafer active sensors. The input data used for the identification are group velocities or wavelengths of the fundamental Lamb waves measured at varying excitation frequencies and propagation directions. The proposed approach has been experimentally tested on unidirectional and cross-ply carbon-fiber reinforced plastic plates and validated by conventional tensile tests. (C) 2015 Elsevier Ltd. All rights reserved.