This paper anaIysed the reasons at edge-turnup cracking of industrial boiler steel pipe by means of chemical analysis and metallographic examination. 采用化学分析和金相检验等方法对工业锅炉烟管扳边开裂原因进行了分析。
The paper applies the finite element method to the coach frame longitudinal beam crack reason analysis and design improvement. 应用有限元法进行客车车架纵梁开裂原因分析及设计改进。
