凹凸棒增强聚丙烯复合材料断裂韧性和断面分维的相关性

RELATION BETWEEN FRACTURE TOUGHNESS AND FRACTAL DIMENSION OF FRACTURE SURFACE FOR PP/AT COMPOSITES

本文应用Ｗｉｌｉａｍｓ新近提出的方法，研究了凹凸棒增强聚丙烯复合材料的冲击断裂韧性（Ｇｃ）。通过测试断面的轮廓线，采用一种改变粗视化程度的方法，确定出断面的分维。结果表明，断裂韧性和断面分维存在一定的相关性，并就此进行简要讨论。

Fracture toughness of PP/AT Composites was studied by means of the method created by williams, et al . which was developed on the basis of LEFM. By utitizing a simple and economical method in which varying measure scales are required, the fractal dimension of fracture surfaces can be determined conveniently. After relating fractal dimension to fracture toughness, it is found that the fractal dimension increases with increasing fracture toughness. This means that fracture toughness can be inferred by the fractal dimension of fracture surface.