Under the action of tensile stress and tensile stress, the bolt with relatively low strength will crack first, and then the fatigue fracture will occur.
在拉应力和应拉力交替的作用下，强度相对较低的螺栓会先产生裂纹，进而发生疲劳断裂。
The analysis of mechanical model shows that the fracture toughness is improved by residual compressive stress of substrate surface, which resists the tensile deformation of substrate.
力学模型分析表明，基体残余压应力以抵抗基体拉伸变形的方式提高了铬层的断裂韧性；
The toughening mechanism of ADI was investigated by microstructure analysis and fracture characteristics of the specimens under tensile test. contact fatigue and stress fatigue.
通过奥贝球铁的单调拉伸加载、接触疲劳和应变疲劳等宏观断裂规律和微观分析，探讨其强韧化机制。
The tensile shear properties, mass loss ratio and surface residual stress of the bond samples before and after the thermal cycling were measured. The tensile shear fracture morphologies were observed.
测试了热循环前后胶接试样的拉伸剪切性能、质损率和表面残余应力，观察了拉伸剪切断口形貌。
Theoretical study shows that the crack extension under shear loading is caused by tensile stress, and it does not belong to shear fracture.
理论分析证明，在剪切载荷作用下裂纹扩展是由于拉伸应力引起的，并非剪切破坏。
The recycle times has little effect on the fracture mechanism and tensile properties at high temperature, but reduces slightly the stress-rupture life of revert K446 alloys.
返回次数对K446合金高温断裂特征和高温拉伸性能没有明显影响，但降低持久性能。
The recycle times has little effect on the fracture mechanism and tensile properties at high temperature, but reduces slightly the stress-rupture life of revert K446 alloys.
返回次数对K446合金高温断裂特征和高温拉伸性能没有明显影响，但降低持久性能。
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