Damage localization and identification in WGF/epoxy composite laminates by using Lamb waves: Experiment and simulation

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• 作者：Bin Yang ; Fu-Zhen Xuan ; ^{fzxuan@ecust.edu.cn} ; Shaojie Chen ; Shaoping Zhou ; Yang Gao ; Biao Xiao
• 关键词：Polymer-matrix composites (PMCs) ; Finite element analysis (FEA) ; Non-destructive testing (NDT) ; Lamb wave
• 刊名：Composite Structures
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：165
• 期：Complete
• 页码：138-147
• 全文大小：4291 K
• 卷排序：165

文摘

Lamb wave propagating behavior in woven glass fiber reinforced epoxy (WGF/epoxy) composite laminates was studied by simulation and experiment. A 3D finite element (FE) model was built in Abaqus/Explicit software with the help of user material subroutine to capture the wave propagating features in WGF/epoxy composite plate. The Lamb wave tests were carried out by a non-circular array with 8 piezoelectric (PZT) wafers. A defect imaging algorithm was developed using MATLAB based on the ellipse theory in time-dependent domains. Two defect imaging cases were carried out in the WGF/epoxy composite plate to verify the feasibility of the proposed algorithm. A good agreement between the simulated waveforms and experimental data was achieved. This indicates a great potential of the proposed algorithm in the field of damage localization and identification for WGF/epoxy thin-walled laminates.