断裂是机械最主要的破坏形式。人们对此已进行了几十年的研究,积累了较丰富的疲劳断裂知识,制定了一系列材料疲万断裂性能试验标准,发展了结构疲劳、耐久性和损伤计方法,研制出一批高韧性、高疲劳抗力的新型结构材料,形成了一系列抗疲劳断裂材料制备和加工工艺,因疲劳断裂导致的破坏事故已大幅度减少。 Fracture is the most important form of mechanical damage. People have carried out several decades of research, accumulated a wealth of knowledge of fatigue fracture, developed a series of test standards for fatigue properties, developed structural fatigue, durability and damage meter method, developed a number of high Toughness, high fatigue resistance of the new structural materials, forming a series of anti-fatigue fracture materials preparation and processing technology, due to fatigue fracture damage caused by a substantial reduction.