前言 在断裂失效分析中,人们往往需要得知失效零件材料的断裂韧性。但是为了实测材料的断裂韧性,往往需要耗费不少人力和物力,因此人们希望通过各种估算的方法,迅速和尽可能精确地得到材料的断裂力学参量。本文从各种断裂韧性之间的关系、断裂韧 Preface In the failure analysis, people usually need to know the fracture toughness of the failure part material. However, in order to measure the fracture toughness of the material, it usually takes a lot of manpower and material resources. Therefore, people hope that the fracture mechanics parameters of the material can be obtained quickly and accurately by various estimation methods. This article from the relationship between fracture toughness, fracture toughness