Variety of rail defects and long-term of external force will cause the phenomenon of rail fracture. There are two common reasons which will causes rail break.
在轨道交通中，钢轨由于自身材质的缺陷以及长期受到各种外力复合作用会使得钢轨发生折断现象。
Based on a failure model of fracture mechanics pattern, this new method deals with the life estimation in the light of the standard promulgated by the Railway Ministry for rail replacement.
在运用断裂力学模式所建立的故障模型基础上，该法用铁道部部颁换轨标准处理寿命估算。
The effect of specimen type, thickness, dimension ratio, and notch sharpness on fracture toughness of a carbon rail steel was examined.
研究了试样类型、试样厚度、比例试样尺寸及切口尖度等因素对普碳轨钢断裂韧性的影响。
A transverse fracture occurred in a rail of a bridge.
某大桥钢轨发生横向断裂。
The microstructure and fracture morphology of directly etched fracture sample of rail steel were observed. The relatinos between the microstructure and fracture morphology were discussed.
在经过腐蚀的钢轨钢拉伸断口上进行了显微组织和断口形貌的同步观察，直接观察到了断日形貌特征与显微组织的某些相关结果。
Normal service life of U74 heavy rail and service life of the damaged rail are estimated by fracture dynamical analysis and possible mechanism on the longitudinal crack on the rail discussed.
通过断裂力学分析，估算出u 74重轨的正常使用寿命及伤轨残余使用寿命；探讨了钢轨纵裂的可能机制。
The effective thermal input of pulse flash process is large, it can help reduce the drop weight test fracture of flat spot, which is suitable for welding U75V rail.
脉动闪光工艺的有效热输入大，有利于降低落锤断口灰斑，适合焊接U75V钢轨。
The analysis showed that it was the impact force of shock absorber that resulted in the fracture of side rail.
分析结果表明：减震器支架在车辆行驶过程中对纵梁的冲击导致了纵梁的开裂。
The analysis showed that it was the impact force of shock absorber that resulted in the fracture of side rail.
分析结果表明：减震器支架在车辆行驶过程中对纵梁的冲击导致了纵梁的开裂。
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