疲劳

In the last part of the thesis, evaluation of fatigue strength and life in the positions of checking computations in the weldings of bearing load in box-shaped anchorage was made by referring to AASHTCK BS5400、 Eurocode.

分析结果表明，按照Eurocode规范分析的预期寿命较为保守，比由疲劳试验加载次数和荷载幅推算而得的最小疲劳设计寿命小，其分析方法可用于初步设计阶段的选型和初算。

Here, for k the value of UTS is taken. The k' is the required fatigue stress that would result in a damage of 1 for the occurring stress spectrum.

这里的k值采用的是悉尼科技大学的指标，k含义为：在应力发生图谱中，造成疲劳损伤值为1所需要的疲劳应力值。

The effect of subzero treatment temperature on the fatigue property of the ultra-high strength steel B318 was studied.

研究了冷处理温度对超高强度钢 B318疲劳性能的影响，结果表明，在相同条件下，冷处理温度对该钢的疲劳性能影响很大。

In vacuum, the height of the steps is smaller, and the fatigue striations and dimples are finer.

真空环境下疲劳断口中台阶高度较低，疲劳条纹与韧窝较细小。

Both the fractures in air and vacuum, in which fatigue striations, steps and dimples are observed and more areas with the dimples exist under lower cyclic stresses.

真空和室温大气环境下的疲劳断口均出现疲劳条纹、台阶和韧窝，且在低循环应力时出现韧窝的区域增多。

Chapter 4: To the modify of GBJ10-89, the method of stress of stirrups and bent up bars under fatigue loading was studied and new formulas for fatigue design were proposed.

第四章研究了钢筋混凝土受弯构件的疲劳计算方法，针对当前的规范修订，提出了一个能够用于工程设计的钢筋疲劳应力计算公式。

It has been found that the microhardness HV and the mean positron lifetimeexhibit quasi-periodical oscillation when the number of the fatigue cycles is increased.

通过对不同循环次数的热疲劳样品的正电子寿命谱和表面显微硬度的测量，发现表面显微硬度HV和平均正电子寿命τ随疲劳循环次数N的变化呈现出类周期振荡特征。

This result is consistent to the physiology biochemistry index, so the sports model is credible. 2. Detecting the stomach by pathological mechanism method and the bowels ache behavior of rads.

大鼠六周递增负荷跑台造成动物的疲劳状态和力竭状态的行为学表现与大鼠生理生化指标变化成正相关，说明本实验提供的动物疲劳模型和力竭模型是可靠的。

The design will use Matushita (Fp∑-c32)PLC, Proface touchscreen (GP37W2), Wister the China National Aviation Corp mechanical and electrical CYB-803S sensor as well as the servo electrical machinery's spring moment of force and the weary test system, the goal will be so long as installs the testing spring the test panel, can carry on the moment of force and the endurance test automatically.

设计使用松下(Fp∑-c32)PLC、Proface触摸屏(GP37W2)、威斯特中航机电的CYB-803S传感器以及伺服电机的弹簧力矩和疲劳测试系统，目的是只要把待测弹簧装上测试台，就能自动进行力矩与疲劳试验。

The stresses in the shell of tank and in the structures of opening s at the top and bottom crown of tank under the several conditions including pressure-testing, operating, seismic and pressure circle fatigue were analyzed by means of the finite element analysis.

介绍了1000m3 氧气球罐的应力分析设计，分别对球罐整体及其上下极开孔结构压力试验工况、操作工况、地震工况和压力波动疲劳工况的应力进行了有限元分析，对其应力进行强度和疲劳寿命评定校核。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。