陶瓷材料 陶瓷材料,在原子排列上至少是具有某种缺陷或不连续性。根据格里弗斯(Griffith)的意见,在缺陷上由于应力的集中而产生裂缝。这是一次分裂的开始。当裂缝延长时,局部停留在裂缝尖端的应力也要增加。像这样的裂缝无须增加负荷也蔓延的。 这种情况下,裂缝处的应力,当用机械试验方法 Ceramic materials Ceramic materials, in atomic arrangement at least have some kind of defect or discontinuity. According to Griffith, cracks were created in the defect due to the stress concentration. This is the beginning of a division. When the crack is prolonged, the stress locally staying at the crack tip also increases. Cracks like this do not have to be loaded as well as spread. In this case, the stress at the crack, when using a mechanical test method