因此有必要通过实验及理论研究等工作，对公路桥梁伸缩装置进行疲劳破坏机理分析和疲劳寿命估算。
Therefore, it is necessary to analyze the mechanism of the fatigue damage of bridge expansion device and estimate its fatigue life by theories and experiment.
但是目前对于超硬涂层材料滚动接触疲劳失效机理的研究还处于探索之中。
But the study on the rolling contact fatigue failure mechanism of super hard material coati-ngs is in grope.
本文研究了水泥混凝土在重复荷载作用下的疲劳损伤机理。
In this paper, the fatigue damage mechanisms of concrete under repealed loads are studied.
应用推荐