断裂力学理论在约经过30年的发展后,已逐渐被工程技术人员所接受和用于工业中。而在航空与航天工业中的应用范围特别广泛,因为在某些方面取得了突破性的发展。其中包括高强度铝合金的发展和它们在一些新机种中的应用。这些新机种装有涡轮螺旋桨发动机或涡轮喷气发动机。工业界原希望新飞机设计中充分使用这些强度更高的材料,但因它们的缺口和裂纹敏感性高,引起不希望的结构破损而未获成功。后 After about 30 years of development, the theory of fracture mechanics has gradually been accepted by engineers and technicians and used in industry. However, the application in the aerospace industry is particularly widespread because of some breakthroughs in some areas. These include the development of high-strength aluminum alloys and their use in some new models. These new models are equipped with turboprops or turbojet engines. The industry originally wanted full use of these higher strength materials in new aircraft designs, but did not succeed because of their high notch and crack sensitivity, causing unwanted structural damage. Rear