本文对碳纤维增强环氧复合材料0°和±45°铺层带边缘缺口试件进行了拉伸破坏实验研究。结果表明:带有垂直于载荷方向边缘缺口的此种碳纤维增强复合材料受拉伸时,裂缝不是沿缺口长度方向扩展,而是沿纤维方向产生并扩展,缺口的存在基本上不影响其余无缺口部分的应力。对缺口不敏感特性与破坏模型进行了讨论。这种材料的破坏机理与各向同性材料相比具有明显的差别。 In this paper, the tensile failure of carbon fiber reinforced epoxy composites at 0 ° and ± 45 ° was studied. The results show that when such a carbon fiber reinforced composite material with an edge notch perpendicular to the load direction is stretched, the crack does not expand along the length of the notch, but rather grows and spreads along the fiber direction. The presence of the notch does not substantially affect the remaining notch Part of the stress. The notch insensitivity and damage models are discussed. The failure mechanism of this material is obviously different from the isotropic material.