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主要研究了碳纤维/环氧树脂复合材料在不同参数重复频率激光辐照后的损伤形式变化以及其拉伸性能变化规律。结果表明,复合材料在激光辐照下的损伤形式主要分为单一基体损伤和基体与增强纤维共同损伤两种类型;激光峰值功率密度和脉冲宽度的增大对复合材料损伤形式影响较大,而辐照时间和重复频率的增大可增加复合材料的损伤程度,但对材料损伤形式影响较小;激光能量密度是影响复合材料辐照后拉伸强度保留率的最主要因素,而影响复合材料辐照后拉伸模量保留率的最主要因素为连续碳纤维增强相的损伤程度。
Mainly studied the carbon fiber / epoxy composite materials under different parameters of repetition frequency laser irradiation damage changes and tensile properties of the law. The results show that the damage modes of the composites under laser irradiation are mainly divided into two types: the damage of the single substrate and the common damage of the matrix and the reinforcing fiber. The increase of the laser peak power density and the pulse width greatly affects the damage form of the composite, The increase of irradiation time and repetition frequency can increase the degree of damage to the composite, but it has little effect on the form of the material damage. The laser energy density is the most important factor affecting the tensile strength retention of the composite after irradiation, The most important factor for the retention of tensile modulus after irradiation is the degree of damage of the continuous carbon fiber reinforced phase.