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- Plenty of oxidation etching pits are found on the surface of the specimen after the thermal fatigue test,and the surface principal crack is prone to propagate through these etching pits. 实验结果发现,试样表面出现大量的氧化腐蚀坑,表面主裂纹优先通过这些腐蚀坑扩展。
- Thermal fatigue testing method for hot die steel 热作模具钢热疲劳试验方法
- thermal fatigue test 热疲劳试验
- thermal fatigue test machine 热疲劳试验机
- Conduct material Fatigue Testing and Thermal stress test. 进行材料疲劳测试和热应力测试。
- High level of resistance to thermal shock and thermal fatigue. 优良的耐热冲击和抗龟裂能力。
- 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；
- By fatigue test of bolt material,the stress-strain life curve is obtained. 通过螺栓材料的疲劳试验,获得了材料的应力应变寿命曲线;
- Pb-free solder;BGA;thermal cycling;dynamic fatigue tests;electrical analysis. 关键词:无铅焊锡;球格阵列构装;冷热循环试验;动态疲劳试验;电性分析
- As a result of increased carbon content, the abrasion resistance and contact fatigue durability of the test steel is increased, in the mean time, its impact toughness and thermal fatigue resistance is decreased. 结果表明 ,随着碳含量的增加 ,试验钢的耐磨性能和接触疲劳性能提高 ,而冲击韧性及抗冷热疲劳性能降低 ;
- Test results show that both of the coated specimens have better oxidation resistances than non-coated ones,and surface oxidation decarbonization is one of the leading forms of thermal fatigue damages. 研究发现,铁基与镍基涂层的抗氧化能力优于铸钢车轮材料,表面氧化腐蚀是涂层试样热疲劳损伤的一种主要形式。
- Based on the program load spectrum, intensified fatigue test for rearaxleare made. 在编制程序载荷谱的基础上,对后桥壳体进行了强化疲劳试验。
- 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。
- The method of correlation factor is an effective method to loads transacting of the fatigue test of airplane structure. 相关系数法是一种有效的飞机疲劳试验载荷处理方法。
- 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。
- In order to overcome such problem, a new technique named as VFT (Virtual Fatigue Test) has been offered in this paper. 为了克服这两个难点，论文提出了基于虚拟样机理论的“虚拟疲劳试验”技术。
- 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。
- Fatigue test is done on medium carbon steel specimens with small surficial pre-cracks and single-edge pre-cracks. 采用带有微小表面预制裂纹和边缘预制裂纹的中碳钢试验片进行了疲劳实验。
- 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。
- The piston rod of family sedan's rear snubber fractured duringearlier stage of rotary bending fatigue test. 家轿后减振器活塞杆在进行旋转弯曲疲劳试验时出现早期断裂。
