The analysis of automobile engine crankshaft was conducted by macroscopic examination, fracture analysis, chemical composition analysis, metallographic examination and mechanical properties test.
The fracture occurred on the rear axle end of heavy automobile.
某重型汽车后桥轴头发生断裂。
3
The importance of examination of surface fatigue cracks in automobile repair is stated in this paper, and the features of fatigue fracture are briefly analysed.