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这里仅就某些机械构件由于设计不当、加工缺陷、材质缺陷、选材不当、装配不合理、环境影响以及使用不合理等因素造成的断裂事故实例,作一简介供参考。一、由于设计不当引起的船用柴油机增压器叶片断裂分析叶片是在运行过程中发生断裂的,裂纹在叶根的排气侧的第一个齿根处(图1)。在断口面上有一层烟灰,经过清洗后,用肉眼可看出疲劳断口的宏观特征“贝壳状”条
Here only for some mechanical components due to improper design, machining defects, material defects, improper material selection, assembly unreasonable, environmental impact and the use of unreasonable and other factors caused by the fracture accident example, for a brief introduction for reference. First, due to improper design of marine diesel turbocharger blade fracture analysis Blade is fractured during operation, the crack in the root of the root of the root of the root of the root (Figure 1). In the fracture surface has a layer of soot, after cleaning, with the naked eye can be seen the macroscopic characteristics of fatigue fracture “shell-like”