Damage localization and identification in WGF/epoxy composite laminates by using Lamb waves: Experiment and simulation. (1st April 2017)

• Record Type: Journal Article
• Authors: Yang, Bin; Xuan, Fu-Zhen; Chen, Shaojie; Zhou, Shaoping; Gao, Yang; Xiao, Biao
• Is Part Of: Composite structures. Volume 165(2017)
• Page Start: 138
• Page End: 147
• Publication Date: 2017-04-01
• Subjects: Polymer-matrix composites (PMCs) -- Finite element analysis (FEA) -- Non-destructive testing (NDT) -- Lamb wave; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2017.01.015
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: 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.