INTEGRAL J_I, which is referred to as a parameter of singular stress field at the front of crack-tip, has its practical value.
i积分作为裂缝前缘奇异应力场的参数量，是有实际应用价值的。
Futhermore, the interaction of the singular stress field between, two initially closed collinear cracks is also studied by photoelasticity.
探讨了压剪闭合共线双裂纹之间奇异应力场的相互作用。
The effect of crack depth, crack shape, wall thickness ratio, the number of cracks etc. on singular stress field near the crack tip is investigated.
探讨了单裂缝与均布多裂缝情况下，裂缝深度、裂缝形状，厚壁筒壁率、裂缝数目等特性参量对裂缝尖端附近奇异场的影响。
Stress intensity factor indicates the strength of the singular stress field at crack-tip, it is the basis of studying the law of crack propagating and the strength of the component with crack.
应力强度因子表征了裂纹尖端奇异应力场的强度，它是研究裂纹扩展规律和带裂纹构件强度的基础。
Stress intensity factor indicates the strength of the singular stress field at crack-tip, it is the basis of studying the law of crack propagating and the strength of the component with crack.
应力强度因子表征了裂纹尖端奇异应力场的强度，它是研究裂纹扩展规律和带裂纹构件强度的基础。
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