一、目的我们业已查明表征人造石墨材料抗破坏性能的指标——断裂韧性值K_(IC),依试验片形状,大小和裂口的长度等测定条件的不同,其值也有所不同。并且,在龟裂发展的初期,显示出剧烈增加的特性。在这种情况下,K_(IC)虽然是表征材料抗破坏性的参数,但不是作为物 First, the purpose We have identified the artificial graphite material characterization of anti-sabotage performance - fracture toughness value K_ (IC), according to the test piece shape, size and length of the gap and other determination of different conditions, the value is also different. And, in the early stages of the development of cracks, showing a sharp increase in the characteristics. In this case, K_ (IC) is a parameter that characterizes the destructiveness of the material, but not as an object