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The modifying effects of polyacryamide on flexural fatigue property and flexural toughness of concrete bridge deck overlay is studied by strength test, impact test, flexural fatigue test and so on. 通过强度试验,冲击试验和弯曲疲劳试验,研究了聚丙烯酰胺对混凝土桥面铺装层弯曲疲劳特性与韧性的改性效果,建立了聚丙烯酰胺改性混凝土的弯曲疲劳寿命方程。
flexure fatigue test 弯曲疲劳试验
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。
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 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。
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。
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
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。
The fatigue test results show that the higher shock impedance of overlays,and the higher laser power density,the greater the increase of fatigue life of aluminum alloy. 疲劳试验结果表明：约束层冲击阻抗越大，激光脉冲功率密度越高，铝合金激光冲击处理后疲劳寿命的提高越显著。
The fatigue test results have also shown the effect of strengthening mechanism and confirmed the presence of a break in the fatigue life curve in age hardened aluminum alloys. 疲劳试验结果还显示了强化机制的影响，证实了时效强化合金疲劳寿命曲线的双斜率的存在。
All subjects performed quadriceps maximal voluntary contraction(MVC) and fastest speed leg extension with different levels(75%,60%,45% 1RM),and 45% fatigue test to all-out. 受试者实施股四头肌最大等长收缩、最快速度不同强度(75%25、60%25、45%251 RM)的伸膝动作及45%25的疲劳测试,记录向心期不同强度的MMG讯号。
A simple test will show if this is real gold. 简单的试验就能证明这是否是真金。