By comparing with the experimental results, a detailed discussion on the influence of cold expansion on the fatigue performance of railbolthole was presented.
结合实验探讨了冷扩张过程对钢轨螺栓孔疲劳寿命的影响方式和效果。
2
It is concluded that, the residual stress induced by cold expansion can maintain enough strength to prevent and retard fatigue crack initiation and growth in railbolthole.