应力强度因子K_Ⅱ的光弹性测定

On the Determination of Stress Intensity Fraetor K_Ⅱ by the Photoelastic Method

作者采用了四点剪切加载方案,作了纯Ⅱ型裂纹K_I的测定.实验表明:光弹性法既能应用于测试Ⅰ型及混合型裂纹的应力强度因子,且能应用于纯Ⅱ型裂纹应力强度因子的测试,本文对Ⅱ型裂纹的断裂研究有一实的参考价值.

Applying four-point-shear Loading way, the author has determined stress intensity fractor KⅡ of pure mode Ⅱ crack by the photoelastic method. The experimental results show that photoelastic stress analysis can be used to determine stress intensity factor not only for mode Ⅱ crack and mixed mode crack, but also for pure mode Ⅱ crack.This paper has a proper reference value to research modeⅡ crack.