疲劳的

The results in this paper are concluded as follows:(1) Rolling contact fatigue has been used to examine the interfacial reaction products and study the mechanism of ion beam intermixing effect on the adhesion of Cr-N coating on steel by IBAD.

对多次冲击条件下薄膜的失效抗力及其与薄膜力学性能之间的关系进行了初步探讨，得到如下结果：（1）用滚动接触疲劳法检测离子轰击导致的界面反应产物和研究离子束共混对钢基体上IBAD沉积Cr-N薄膜结合强度的影响本质，结果表明，滚动接触疲劳能有效地分析界面最薄弱位置和评估界面反应产物，滚动接触疲劳引起的剥落可作为研究界面反应产物对结合强度影响的根据。

As the complexity of random fatigue, maney mechanism is not yet clear, the method to use the concept of stochastic process in fatigue is now one of the tendency of random fatigue field.

由于随机疲劳问题的复杂性，许多机理性的问题尚需进一步探讨，但是把随机过程的概念应用于疲劳问题的研究乃是目前随机疲劳课题的发展趋势之一。

For the first time, conductive LaNiO〓 thin films have been successfully prepared by metalorganic decomposition using 2-ethylhexanoates of lanthanum and nickel as the metalorganic precursors.

近年来的研究表明：铁电薄膜与金属电极的界面失配和扩散是影响铁电薄膜器件疲劳特性的重要因素，具有与铁电薄膜同为钙钛矿结构的导电氧化物电极，对改善疲劳现象具有显著的作用（疲劳寿命从10〓提高到10〓）。

Ultra-high strength 23Co 14Ni 12Cr3MoE steel was shot peened and the surface residual stress of shot-peened specimens was determined during rotating bending fatigue by X-ray diffraction method.The surface residual stress decreases greatly in the first 10 cycles and it is steady alter 100 cycles.

工件表面的残余应力，对其疲劳性能具有重要的影响，喷丸强化工艺主要利用的就是在表层产生一定数值大小的残余压应力以提高疲劳抗力，但喷丸残余压应力在疲劳过程中并不是稳定的，在一定外力或/和温度的单独或共同作用下，残余应力可发生松弛['一5]。

Wagon body is a complicated weld structure. While physical wagon can not used to do fatigue test, how to make anti-fatigue design has been discussed in this paper. One coal hopper wagon has been taken as an example to study about anti-fatigue design of the wagon. First of all, based on finite element technique and the theory about how to predict fatigue life of weld structure, the technology route and key technique are given as well, which is based on AAR standard about weld structure wagon fatigue life predicted.

论文认为货车车体是复杂的焊接结构，为了使货车车体焊接结构抗疲劳设计在产品的图纸上就能卓有成效地展开，论文以新型煤炭漏斗车为研究对象，对煤炭漏斗车车体抗疲劳设计开展了一系列研究：首先，基于有限元算法和焊接结构寿命预测的疲劳理论，给出了基于北美铁路协会AAR标准的货车车体焊接结构寿命预测的技术路线及关键技术。

In order to improve the life of cement concrete bridge deck pavement,compound beam test was used to research the fatigue characteristics of hot mixed asphalt courses on bridge deck,finite element analysis method was employed to make the mechanical response of compound beam accord with that of actual bridge deck under the same load,the fatigue test was done for compound beams with different pavement structures.

为了提高水泥混凝土桥面沥青混凝土铺装的使用寿命，以复合梁试验评价不同的桥面沥青铺装结构的疲劳性能，采用有限元法分析荷载作用下复合梁试件具有与实际梁体一致的应力响应，并采用复合梁疲劳试验测试不同桥面沥青铺装层组合的疲劳寿命。

It is feasible to predict the fatigue life of the structure in the critical location when the S-N curve of the fatigue life applied. The meanings and conclusions can effectively instruct the design of leaf spring system.

最后对模型采用疲劳寿命的S-N曲线法计算能较准确的预测出疲劳破坏发生的区域及结构的疲劳寿命，在实际应用中对钢板弹簧的设计有重要的指导意义。

In addition to the common effect of supplementing qi, YiQiYangYin Fang has unique clinical application in exercise-induced fatigue disease because of its function of reinforcing yin; YiQiBuShen Fang is used for treating senescence diseases by reason of its function of invigorating kidney.

本课题以中医药理论为指导，依据益气养阴方和益气补肾方的功效与应用，结合目前运动性疲劳和衰老的产生机制等方面的研究进展，采用现代药理学研究方法，观察益气养阴方和益气补肾方对环磷酰胺致小鼠免疫抑制的抵抗作用及对小鼠常压耐缺氧和断头后张口喘气时间的抗应激能力，同时分别采用运动性疲劳大鼠模型和自然衰老大鼠模型进一步探讨益气养阴方抗运动性疲劳机制及益气补肾方抗衰老机制。

Considering to the fatigue calendar characteristics of materials, the sequence effects of loading spectrum and the mechanical behavior of cyclic hardening/softening of metals, the cumulative fatigue damage is proved to have character of Markov process. Also, the distribution of the cumulative fatigue damage and its critical value is deduced to vary with the pre-exposure calendar time of materials.

考虑载荷次序效应、材料循环硬化/软化效应及材料的大气环境腐蚀老化效应，论证了疲劳累积损伤随机过程的Markov性，及疲劳累积损伤的正态分布特性，同时证明了临界累积损伤的统计特性随日历时间的变化关系，在此基础上建立了一新的全动态疲劳累积损伤统计干涉模型。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than that in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明，钻杆属于早期疲劳断裂，断裂主要原因是在空气钻井过程中钻具受到的震动载荷远大于钻井液钻井过程中的震动载荷，在交变的震动载荷作用下，钻具容易产生疲劳裂纹；由于现有的井口检测仪表不能精确及时反映钻杆刺穿之后产生的泵压变化，无法及时采取预防措施，疲劳裂纹不断扩展，最终导致了钻杆断裂失效。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。