摘要
本文在Barker的短圆柱试件法基础上,提出了一个粘弹性修正系数的概念,使这个实验测定断裂韧性的弹塑性方法能够用于测量粘弹性响应较大的高分子材料的K_IO值,而当修正系数为1时,又回到理想的弹塑性情况。
Based on Barker's short-rod-specimen method, the concept of viscoelastic correction coefficient is proposed. This coefficient makes it possible that Barker's method, an elastic-plastic method for measuring fracture toughness, can be used to obtain K_(Ic) of polymer materials which have a considerable viscoelastic response. When the correction coefficient equals 1, it is again the ideal elastic-plastic case.
关键词
粘弹性
断裂韧性
高分子化合物
viscoelasticity
fracture toughness
elastic-plastic property
high molecular compounds.
