Therefore,the improvement on casting quality and adoption of the oxynitriding are efficiant means to increase,fatigue life of the crankshaft.

因此,改善铸造质量并采用氧氮化是提高曲轴疲劳寿命的有效手段。

Weldbonding experiments were performed and the results show that weldbonding technique can improve the strength and fatigue life of the weld joint.

同时参考分析结果进行粘接点焊的试验研究，表明粘接点焊可以显著提高结构的强度和疲劳寿命。

The residual stress formed on the surface of rolling bearing in superfinish hard turning will influence the fatigue life of rolling contacting after stress decay.

超精硬态切削在滚动轴承表面形成的残余压应力,经工作应力衰减后才成为影响滚动接触疲劳寿命的应力状态。

The result was shown that the program runs quickly and in reliability ,It can replace the nomograph method and use easily for predicating sonic fatigue life of aircraft skin-panel structure .

通过已有的算例进行验证，结果表明计算迅速可靠，可以代替以列线图为主要手段的求解方法，广泛的应用于工程领域。