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- thermal fatigue strength 热疲劳强度
- High level of resistance to thermal shock and thermal fatigue. 优良的耐热冲击和抗龟裂能力。
- Of gear foot and contact fatigue strength of gear profile. 齿根弯曲疲劳强度,齿面接触疲劳强度。
- The thickness of coating decreasing the thermal fatigue resistance incr ease. 随涂层厚度减薄，热疲劳抗力增加；
- Under the given testing con-ditions, the thermal fategue resistance primarily depends on the strength,with adequate combination of the strength and plasticity it can result in aoptimum thermal fatigue resistance. 在本试验条件下,热疲劳抗力主要受强度控制,在强度和塑性取得适当配合时,热疲劳抗力最大。
- The results show that the air blast shock and thermal fatigue could cause a certain increase in strength, but the water quench could cause a decrease in both stress intensity factor and strength. 在风冷(高温)、水冷(低温)两种冷却条件下测定了裂纹扩展参数,结果表明:高温风冷时裂纹扩展激活能及应力强度指数比低温水冷时大,由裂纹扩展参数可进行寿命预测。
- A layer of hot-dipped galvanizing causes a considerable reduction in the fatigue strength. 热浸镀锌层引起疲劳强度的显著降低。
- Thermal fatigue life of solder joints is predicted using the Coffin-Manson's empirical modified formula. 在此基础上,利用Coffin-Manson经验修正公式预报了焊点的热疲劳寿命。
- However, a low fatigue strength detail or a large built-in defect may produce only a single significant crack. 但是，疲劳强度较低的细节部分或较大的内部缺陷可能只产生一条很大的裂纹。
- This paper discusses the factors of influencing thermal fatigue of solder joint in SMT and its research method. 本文研讨了影响SMT焊接点热疲劳性能的因素及研究方法。
- Gas cylinders. Fatigue strength testing under repeated pressurizing for liquefied or dissolved compressed gases. 气瓶。液化或熔解压缩气体气瓶的反复加压疲劳试验。
- The effect of graphite morphology and alloying elements on thermal fatigue resistance of cast iron was studied. 对石墨形态、合金元素等对铸铁抗热疲劳性能的影响进行了研究。
- And when shot peening treater, the fatigue strength of the chian will improve 12.3%. 经喷丸处理链条疲劳强度可提高12.;3%25。
- Thermal fatigue property of Ni-based infiltrated layer on copper substrate has been investigated. 研究了铜基表面镍基渗层的热疲劳性能。
- In view of this, the tranditional fatigue strength condition under nonsymmetrical circulation is incorrect. 由此可知，当前通用的非对称交变应力的疲劳强度条件是不正确的。
- The scope of the work included connecting strength,tightness and fatigue strength of the expansionjoints. 研究范围包括胀接结构的连接强度，密封即耐压性能，疲劳强度等。
- Dynamic thermal fatigue of the micro specimens of 3Cr2W8V steel is carriedout in SEM with self-made Coffin model thermal fatigue stage. 利用自制的Coffin型热疲劳载物台,对3Cr2W8V钢微型试样进行了扫描电镜中的动态热疲劳试验。
- In this paper, the fatigue strength of the peened welde d joints under over loading is studied. 结果表明:经拉伸过载后,超声冲击处理焊接接头的疲劳强度有所下降,但并不十分严重。
- Netty thermal fatigue crack will occurs when two principal stress and two principal plastic strains are approximately equal to each other. 两个主应力的值和两个主塑性应变值相近时出现网状龟裂。
- The hard second phase, for example martensite, contributed to the superior fatigue strength and higher threshold value. 较硬的第二相，如马氏体，贡献了出众的疲劳强度和较高的开始值。
