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1·Results show that the smaller the grain size is, the higher the fatigue limit is.

结果表明，晶粒尺寸越小，渗碳钢的疲劳极限越高。

2·The fatigue limit of Ti-Ni SMA spring could be efficiently increased by shot-peening.

喷丸处理可有效提高该弹簧的疲劳寿命。

3·Compressive residual stress are the main factor in the increase of torsion fatigue limit.

喷丸后扭转疲劳极限提高的主要原因是残余压应力的作用。

4·The induction quenching realizes imitated stress strengthening, raises fatigue limit and se…

感应淬火实现了仿应力强化，提高了扭杆的疲劳极限和使用性能。

5·The fatigue limit of condenser copper tube was reduced by working condition which aggravated the spread of crack.

冷凝器铜管的工作环境使疲劳极限大为降低，加剧了疲劳裂纹的扩展。

6·Through the stress field intensity approach, the relationship between the rotary bending fatigue limit and torsion fatigue limit was studied.

根据应力场强法，分析了旋转弯曲疲劳极限与扭转疲劳极限之间的关系。

7·On the base of experimental data, a new fatigue limit measuring method of steel bar in concrete based on remained strength has been presented;

在分析了疲劳损伤后未锈钢筋静强度试验数据的基础上提出了基于剩余强度的混凝土用钢筋疲劳极限的测定方法；

8·This approach offers the value of fatigue limit with survival rate index, hence it may be used as a new criterion to estimate the rail quality.

由于升降法提供了具有存活率指标的疲劳极限值，可以为评定钢轨的质量提供新的指标。

9·Abstract :For obtaining fatigue limit and dealing with censored data, the pair-life-weighted and censored life approximation methods were proposed.

针对概率疲劳统计中疲劳极限与定时截尾数据的处理问题，提出了求解疲劳极限的“配对寿命加权法”及求解疲劳曲线的“截尾寿命近似法”。

10·Bending fatigue limit stress is still short of reliable data for gear of domestic material in gear design mostly used are the data offered from ISO6336.

在齿轮设计中，国产材料齿轮的弯曲疲劳极限应力仍然缺乏可靠的试验数据，大多是沿用ISO 6336提供的数据。