热疲劳寿命是评价柴油机可靠性的一个主要指标。
Low cyclic thermal fatigue life is an important parameter for evaluating the reliability of diesel engine.
本文对空调器印刷电路板(PCB)通孔插装形式无铅焊点的热疲劳寿命进行了研究。
Thermal fatigue life of lead-free solder joint of Air-conditioner PCB (Printed Circuit Board) under the form of THT (Through Hole Technology) is studied.
SCSP的焊点热疲劳寿命模拟值为1 052个循环周，低于单芯片封装元件的焊点热疲劳寿命(2 656个循环周)。
The simulation value of solder joint thermal fatigue life is 1 052 circulations. The thermal fatigue life of solder joint in SCSP is lower than the single chip package (2 656 circulations).
因此，考虑热老化对材料性能的影响可能得到更准确的疲劳寿命预报。
So considering thermal aging effect to rubber may give an accurately result to predict the fatigue life.
结果表明，烧结-热等静压制作的硬质合金孔洞消除了，并且硬质合金的抗弯强度和弯曲疲劳寿命也大幅度提高。
The results showed that cemented carbide manufactured by sinter-HIP is free of porosity and transverse-rupture strength, bending fatigue life are also greatly increased.
采用热模拟方法，对EH36MOD钢焊接热影响区粗晶区(CGHAZ)的相变超塑性及其对疲劳寿命的影响进行了研究。
The transformation superplasticity in welding CGHAZ (Coarse Grain Heat Affected Zone) of EH36MOD steel and its effect on fatigue life have been studied with thermal simulating method.
活塞的热疲劳性能对柴油发动机的全寿命至关重要。
Thermal fatigue behavior of the piston is vital to the overall life-span of diesel engines.
分析了压铸过程中模具的热疲劳失效机理及其影响因素，讨论了优化压铸过程控制对模具寿命的影响。
Heat fatigue failure mechanism of the die casting dies during the process of die casting were analyzed, and the influence of optimizing process control on die life of die casting were discussed.
随着车辆的重载化和高速化，车轮的热负荷进一步增加，对车轮的疲劳寿命带来重大影响。
When the increasing of the speed and loading of the freight train, the heat load of the wheel will certainly increase, the life of the rail wheel may be influenced terribly.
结果表明，不同热处理状态的镀层在热疲劳过程中行为相同，但热度劳寿命不同。
The results show that the plating conditions are the same during the thermal fatigue processes, but the thermal fatigue lives are different.
针对涡轮叶片的热冲击疲劳寿命实验，提出了一种新的对比实验方案和措施：将实验叶片和参照叶片组合在同一组试验叶栅上，并且在试验过程中定期对调两种叶片的安装位置。
A new comparative test approach is provided for the thermal fatigue life experiments of turbine blade under thermal shock. The tested blades and reference blades were mounted in a common vane cascade.
结果表明：h13热锻模具钢经此工艺处理后，具有较高的硬度和热疲劳性能，延长了模具的使用寿命。
The results show that the H13 steel treated by new process has higher hardness and heat-fatigue property. The service life of hot-forge die is prolonged.
结果表明：h13热锻模具钢经此工艺处理后，具有较高的硬度和热疲劳性能，延长了模具的使用寿命。
The results show that the H13 steel treated by new process has higher hardness and heat-fatigue property. The service life of hot-forge die is prolonged.
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