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本文通过对LD10cs薄板平面应力断裂韧性 K_c测试的实验研究,给出了LD10cs薄板(B=1.5、2.0mm)的平面应力断裂韧性值 K_c.文章着重对窄板代替宽板测量 K_c 的可能性作了初步探讨,认为对某些材料是可行的.最后给出了用计算机试凑法确定裂纹失稳扩展临界点所得的 K_c 值.
In this paper, the plane stress fracture toughness K_c of LD10cs thin plate (B = 1.5,2.0mm) is given through the experimental study on the plane stress fracture toughness K_c of LD10cs thin plate.The article focuses on the possibility of measuring K_c instead of wide plate instead of wide plate It is considered that this method is feasible for some materials.Finally, the K_c value obtained by the computer trial and error method for determining the critical point of crack instability is given.