Composite Stress Corrosion Cracking Damage Mechanism of Metal-Lined Fiber Hoop-Wrapped Composite Cylinders
This study aims to investigate the stress corrosion cracking (SCC) damage propagation of the wound layer of metal-lined fiber hoop-wrapped composite cylinders by using a new multi-scale damage model, including macro and micro levels. The multi-scale model with an embedded cell includes a detailed microstructure of the composite. Scanning electron microscopy (SEM) is used to observe the SCC in the wound-layer composites and established the multi-scale model of the metal-lined fiber hoop-wrapped composite cylinder. Two numerical damage multi-scale models are used for the simulation of the damage evolution. Multi-scale research indicates that the metal-lined fiber hoop-wrapped cylinder winding layer crack will be extended along the axial and radial directions under the effect of stress corrosion, but priority will be extended in the axial direction. Moreover, these phenomena are in good agreement with what the SEM observed. Based on the microscopic study, we use the macroscale model to explore the effects of circumferential crack on the SCC propagation. This finding explains the propagation mechanism of the SCC on the wound layer of the cylinders by combining the method of observation and simulation.
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Document Type: Research Article
Publication date: September 1, 2018
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