1. Numerical Simulation of Carbon Fiber Reinforced Polymer Composite Delamination Damage Identification Using Lamb Wave and Filtered Back-Projection Method.
- Author
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Luo, Kai, Chen, Liang, and Liang, Wei
- Subjects
LAMB waves ,FIBROUS composites ,DELAMINATION of composite materials ,CARBON fibers ,CARBON fiber-reinforced plastics ,NONLINEAR waves ,COMPOSITE columns - Abstract
Delamination in carbon fiber reinforced polymer (CFRP) composite structures plays a significant role in reducing the stiffness and strength of the structure, thus downgrading the integrity and reliability of the system. Aiming at the problem that traditional linear Lamb wave technology is not sensitive to the layered defects of composite materials and the existing nonlinear Lamb wave method is difficult to locate and detect damage, this paper proposes an ultrasonic tomography method based on Lamb waves to detect and reconstruct the delamination defects in CFRP plate. The dynamic finite element analysis method is used to simulate the propagation process of A0 mode Lamb waves in the 14-layer cross-layer CFRP defect plate. Sixty-four sensors perform fan-beam scanning on the composite plate in an equal-angle arrangement to obtain time-of-flight data corresponding to the sensing path. The layered defects of the composite material are imaged and evaluated by the filtered back-projection method. The experimental results show that this method can obtain high-quality reconstructed images of layered defects. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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