电机轴断裂失效分析  

Analysis of Fracture Failure for Electro-Motor Shaft

作　　者：尹万全[1] 周宏 尹涛 

机构地区：[1]中国科学院金属研究所,沈阳110015 [2]辽宁省分析测试研究中心,沈阳110015

出　　处：《物理测试》2000年第2期18-22,共5页Physics Examination and Testing

摘　　要：采用化学分析、宏观分析、微观分析和金相检测手段,对电机轴断裂原因进行了探讨。试验结果表明,由于电机轴加工和装配不当,在交变扭转应力作用下,导致花键平齿根部产生应力集中开裂,进而沿轴向断开。最后,在扭转应力作用下促使电机轴发生扭转过载塑性断裂。The analysis of fracture failure for electro-motor shaft was explored with the chemical analysis, macroanalysis, microanalysis and metallographical inspection method. The experimental results showed as follows: under the cyclic twist stress, the bottom of flat teeth of spline shaft fissured with stress concentration that it was due to machining and installing imprudence. Thereafter , the flat teeth were fissured along longitudinal direction of spline shaft. Finally, the electro-motor shaft produced plastic fracture of overload twist.

关 键 词：电机轴 断裂 扭转应力 失效分析 

分 类 号：TM307[电气工程—电机]