Abstract

The failure of carbon fiber reinforced epoxy matrix composites has been attributed to different mechanisms involving tensile, compressive and shear failure of the fibers or the matrix. This research serves to understand whether linear elastic fracture mechanics can explain the matrix behavior under compressive loading. Experiments and finite element analysis (FEA) are used to confirm that the matrix under compressive loads follows the relationships established by linear elastic fracture mechanics. The failure load is related to the corresponding notch length, and the observed relationship is compared to the relationship defined by linear elastic fracture mechanics.

中文翻译：

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线弹性断裂力学在碳纤维增强环氧树脂基复合材料压缩损伤中的适用性

摘要

碳纤维增强环氧树脂基复合材料的失效归因于不同的机制，包括纤维或基体的拉伸、压缩和剪切失效。本研究旨在了解线弹性断裂力学是否可以解释压缩载荷下的基体行为。实验和有限元分析 (FEA) 用于确认压缩载荷下的矩阵遵循线性弹性断裂力学建立的关系。失效载荷与相应的缺口长度相关，并将观察到的关系与线弹性断裂力学定义的关系进行比较。