摘要
本文用空间解析几何方法,推导了在一般非平行斜入射光条件下,裂纹体表面所形成的反射焦散线和初始曲线的方程.分析了倾斜入射光造成的焦散线畸变,给出了这种畸变造成的裂端应力强度因子测量误差的解析表达式.
The equations of caustic curve and its initial curve for a crack illuminated by an oblique incident light beam in reflection arrangement were deduced using the space analytic geometry method.It was shown that the caustic curve will be distored by oblique incident light.The errors in measuring the stress intensity factor caused by this distortion were given in analytic forms.
出处
《实验力学》
CSCD
北大核心
1993年第2期111-118,共8页
Journal of Experimental Mechanics
关键词
焦散线法
应力强度因子
入射光
caustic method
SIF measurement
error analysis
