应力强度因子的光弹性测试研究

Experimental Study of Stress Intensity Fractor by Photoelastic Method

本文采用紧凑拉伸剪切试样作了光弹性测定．既测试了Ⅰ型袭裂纹及复合型裂纹的应力强度因子，又得到了一般加载很难实现的纯Ⅱ型裂纹．

In this article,the photoelasticity is tested by using compact tension shear specimen.Both the stress intensity factors of the mode I crack and the mixed mode crack are determined in the test.And the pure mode Ⅱ crack which is difficult to appear in common loading is also determined.The determinations in this article have a proper reference value to research fracture tests.