【作者】 曹侃； 汪洋； 夏源明；

【Author】 CAO Kan,WANG Yang,Xia Yuanming (Department of Modern Mechanics,University of Science and Technology of China, HefeiAnhui 230027)

【机构】 中国科学技术大学近代力学系；

【摘要】 本文采用中心切口圆盘径向压缩试验技术,在MTS809材料试验机上对环氧树脂进行了纯Ⅰ型和纯Ⅱ型加载条件下的断裂试验,试验研究了环氧树脂断裂行为的加载速率相关性。试验结果表明,在本文实施的加载速率范围内,环氧树脂的纯Ⅰ型和纯Ⅱ型断裂韧度K_ⅠC和K_ⅡC均随着加载速率的增大而减小;K_ⅠC值小于K_ⅡC值。更多还原

【Abstract】 Compression tests using central notched disk were performed on MTS809 testing machine to investigate the effect of loading rate on the fracture behavior of epoxy under pure modeⅠand pure modeⅡloading conditions.Experimental results indicate that the values of fracture toughness for both pure modeⅠcrack and pure modeⅡcrack decrease with increasing loading rate. Furthermore,the value of K_ⅠC is less than that of K_ⅡC.更多还原