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- 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
- dynamic fatigue test 动力疲劳试验
- The trialproduction and test indicate that the static strength and dynamic fatigue strength meet the design requirements,and that the noise in the driver's cab is not conformed with the standard at high speed. 试制试验表明,动力车车体静强度和动疲劳强度满足设计要求; 司机室噪声在高速时超标。
- 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;
- Conduct material Fatigue Testing and Thermal stress test. 进行材料疲劳测试和热应力测试。
- The fatigue analysis method includes static or quasi-static fatigue, dynamic fatigue and vibration fatigue analysis method. 摘要有限元疲劳分析法通常包括：静态（或准静态）疲劳分析法、瞬态疲劳分析法和振动疲劳分析法。
- 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。
- The results showed that reversion resistant and dynamic fatigue property of rubber vulcanized by new vulcanizator were excellent. 结果表明，用双-1，6-（二乙基硫代氨甲酰-二硫化）己烷组成的硫化体系硫化的株胶具有优异的抗硫化返原性和动态疲劳性能。
- 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。
- 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。
- 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。
- 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。
- Based on the results obtained from fatigue tests under pulsating internal pressure, the mechanism of dynamic autofrettage of thick wall-cylinder components is stu... 本文基于脉动内压疲劳试验结果,对厚壁圆筒构件的动态自增强原理进行了分析研究。
- Tne formula under given fracture length is verified by fatigue test datas of welded box girder on overhead travelling crane. 并用桥式起重机焊接箱形梁的疲劳试验数据，对给定裂纹长度时构件疲劳可靠度的计算公式进行验算。
- Abstract： The piston rod of family sedan’s rear snubber fractured during earlier stage of rotary bending fatigue test. 摘 要： 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。
- At present,tuning-folk resonance plate structure is common used in crankshaft bending fatigue test bench in domestic diesel engine industry. 目前,国内柴油机行业普遍使用的曲轴弯曲疲劳强度试验台架,均采用音叉共振板结构。
- The effect of temperature on cyclic fatigue life and fracture mechanism on 2524-T4 aluminum alloy was studied by cyclic fatigue test,SEM and TEM. 采用疲劳实验、SEM及TEM等分析测试手段,研究温度对2524-T4合金疲劳寿命及断裂机制的影响。
- Metallographic analysis,tension test,fatigue test and SEM analysis were conducted on the TA15 titanium alloy welded joint. 对TA15钛合金板材电子束焊接试样进行了金相分析和静力试验、疲劳试验和扫描电镜(SEM)分析。
- When the fatigue test is carried on the blade of aircraft engine, long-time actuating vibration must be applied to the blade. 摘要飞机发动机叶片进行疲劳试验时，需对叶片进行长时间激振以完成叶片的疲劳试验。
- Test Methods for Rubber Deterioration - Dynamic Fatigue 橡胶变质的动态疲劳试验方法
