摘要
对三种厚度１４ＭｎＮｂ新桥钢基材进行了三种应力比下的疲劳裂纹扩展速率试验，给出了全部试验结果．试验结果表明：随着应力比Ｒ和试件厚度的增加，疲劳裂纹扩展速率随之增加．
The fatigue crack growth rate experiments are performed for 14MnNb new type bridge steel of three kinds of thickness under three kinds of stress ratio. The results of the whole experiment are given in the paper. The results show that the fatigue crack growth rate increases with the merement of stress ratio and speciman thickness.
出处
《长沙铁道学院学报》
CSCD
1994年第3期57-65,共9页
Journal of Changsha Railway University
关键词
疲劳
裂纹扩展速率
钢桥
fatigue, crack growth rate, steel bridge
