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- The pattern of fracture by impact penetration test and tensile fatigue test of thermite welding with stereoscan was observed,and the component of defect with energy spectrum was analyed. 结果表明:微观缺陷主要包括微孔和夹杂,其中微孔由微气孔和微缩孔组成,夹杂物按形态和尺寸分为团簇状夹杂、锥状夹杂、粒状夹杂、积聚物夹杂、丝状夹杂和混合形夹杂。
- indirect tensile fatigue testing 沥青路面
- tensile fatigue tests 拉伸疲劳试验
- tensile fatigue test 拉伸疲劳试验,张力疲劳试验
- uniaxial tensile fatigue test 单轴拉伸疲劳试验
- indirect tensile fatigue test 劈裂疲劳试验
- 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
- 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。
- Test method for pulsed tensile fatigue of welded joints 焊接接头脉动拉伸疲劳试验方法
- The impact fatigue tests show that the tufftride process has a bad influance on impact fatigue properties of materials. 同时,冲击疲劳试验表明:软氮化处理使冲击疲劳性能劣化,这是因表面硬化层约束了柔软心部,使整体材料的韧性变差的结果。
- Test method for shear tensile fatigue of spot welded joints 点焊接头剪切拉伸疲劳试验方法
- Various proportional and nonproportional tension-torsion fatigue tests were conducted on aeronautic material, LY12CZ. 对航空材料LY12CZ进行多种比例和非比例加载试验。
- The strength and fatigue tests have shown that the hybrid composite driveshaft is reasonable. 研制的混杂复合材料传动轴经强度和疲劳试验证明是合理可行的。
- 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。
- Using newly developed filament-wound composite tubular specimens, the tension-torsion biaxial loading fatigue tests were performed. 同时设计出一种缠绕复合材料管状试样，进行了拉扭双轴疲劳实验研究。
- 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。
- Tension and fatigue tests on a widely used packaging epoxy molding compound (EMC) were performed under room and high temperatures. 对在微电子封装中应用很广的环氧模塑封装材料进行了常温和高温下的拉伸、疲劳实验。
- 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。
