Study on a Cracked Single-Layer 2D Woven Composite Plate: Fracture Mode and Damage Analysis
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An experimental study and numerical calculation are conducted to investigate the crack propagation in a 2D woven composite. Crack propagation tests of single-layer composite plate specimens permit this process to be directly followed. Analysis of their fracture surfaces reveals crack propagation paths, fracture mode, and damage mechanisms. The load–deflection curve represents the crack propagation as a three-stage process. The stress intensity near the crack tip is evaluated with the critical stress intensity factor numerically calculated. The results demonstrate a good agreement between the calculations and experiment.
Keywordswoven carbon fibers crack propagation fracture mode damage stress intensity factor
This work was supported by the National Natural Science Foundation of China (Grant No. 51605076, Grant No. 51375068, and Grant No. 51475073), the National Key Basic Research Program of China (Grant No. 2014CB046504), and the Liaoning Province Natural Science Foundation of China (Grant No. 201602171).
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