在热交变应力的作用下，热疲劳是铸铁工件的主要失效形式之一。
Under act of the alternating thermal stress, thermal fatigue is one of theprimary invalidity forms of cast iron workpiece.
主要涉及的内容包含每个设备部件的应力、疲劳、热棘轮、断裂力学分析和内部构件流致振动分析以及试验验证等。
The design mainly involves the analysis of the stress, fatigue, thermal ratchet and fracture mechanics, the analysis of flow-induced vibration of the internals and the test verification.
在承受频繁的弯曲应力作用后，在其焊接热影响区萌生了裂纹源进而发生疲劳开裂。
In frequent bending stress condition, fatigue cracking occurred due to the cracking source had been initiated in welding heat affected zone.
研究进一步表明，材料变形的难易程度又与变温循环过程，热疲劳试样拉伸应力的增加和材料屈服强度的降低有关。
Moreover, it is revealed that the deformation resistance in the thermal cycle process is related to the increase of its tensile stress and the decrease of yield strength.
水轮机叶片有较大的工作应力、热影响区的晶粒粗大以及水介质的腐蚀性是产生机械腐蚀疲劳汽蚀的重要原因。
The larger tension stress in the hydraulic turbine blades, grain coarsening in the heat-affected zone and the causticity of fluid medium are the major causes of cavitation erosion.
本论文进行模拟实验并有限元方法，获得蒸汽管道支管及接管座管壁温度场和热应力的分布规律，阐明热疲劳裂纹产生的原因；
To study the reason of appearance of the thermal diffuse crack, Temperature and thermal stress analysis of the steam pipe and correlative branch pipe was performed with finite element analysis method.
对含有35 %WC的钢结硬质合金在热应力作用下热疲劳裂纹形成过程进行了反复观察。
Thermal fatigue crack forming process of steel bonded carbide containing 35% WC by the action of thermal stress has been observed time and time again.
陶瓷涂层的热震失效是由于涂层在循环加热和冷却过程中，涂层内产生循环热应力，导致涂层发生热疲劳失效。
The thermal shock failure of ceramic coating is essentially the fatigue failure induced by cyclic thermal stress during repeated heating and cooling.
观察了在热应力作用下gjw35钢结硬质合金表面热疲劳裂纹扩展过程。
The process of thermal fatigue crack propagation on the surface of steel bonded carbide GJW35 under the action of thermal stress has been observed.
用作橡胶的防老剂，对臭氧、风蚀和机械应力引起的曲挠疲劳有卓越的防护效能，对氧、热、高能辐射等也有显著的防护作用。
Used as a rubber antioxidant, ozone, wind and mechanical stress-induced fatigue Flexing excellent protection performance of the oxygen, heat, high-energy radiation has a significant protective effect.
在排除焊接残余应力导致的裂纹闭合效应后，焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Moreover, the fatigue crack growth rates of the weld metal and heat affected zone are lower than those of the base metal. Having excluded the effect of welding residual tress...
文摘：观察了在热应力作用下gjw35钢结硬质合金表面热疲劳裂纹扩展过程。
Abstract: the process of thermal fatigue crack propagation on the surface of steel bonded carbide GJW35 under the action of thermal stress has been observed.
在排除焊接残余应力导致的裂纹闭合效应后，焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Having excluded the effect of welding residual tresses on crack closure, fatigue crack growth rates of the welded join...
在排除焊接残余应力导致的裂纹闭合效应后，焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Having excluded the effect of welding residual tresses on crack closure, fatigue crack growth rates of the welded join...
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