本文指出:断裂力学把材料当作各向同性的连续体,用连续介质力学的处理方法,这是有局限性的。要做到从材料的组织特征来计算其强度和韧性,并以此来指导材料的成分配比和生产工艺使之性能有大幅度的提高,必须研究断裂现象的物理机制,因此断裂物理是断裂学科的相当重要的一个研究领域。 This paper points out that fracture mechanics treats the material as an isotropic continuum with a continuum mechanics approach that has limitations. In order to calculate the strength and toughness of the material from the organizational characteristics and to guide the material composition ratio and production process so that the performance has greatly improved, we must study the physical mechanism of fracture, fracture physics is therefore broken A very important area of ​​research in disciplines.