The fatigue endurance limits of steel are requirement data for fatigue strength design and reliability analysis of automotive parts, but there are only a few fatigue limit data of steel made in China to use. 钢材的疲劳极限是汽车零件进行疲劳强度设计及可靠性分析必需的数据,但国产钢材的疲劳极限难以查找。
A New Method for Predicting Strain Cycling Fatigue Life and Endurance Limit of Metals at Low Temperatures 估算低温下金属材料应变疲劳寿命和疲劳极限的新方法
By means of this expression, much money will be saved because the FCG rates can be Predicted from the tensile Properties without additional empirical modification and low temperature fatigue test, if the endurance limit and FCG threshold at room temperature are predetermined. 若室温疲劳极限和裂纹扩展门槛值已定,利用该式可根据拉伸性能预测材料的低温疲劳裂纹扩展速率而不需任何低温疲劳试验和经验修正。
Once the fatigue tests for a few specimens under two stress levels are done, we can determine the parameter(β+ 1) in the formula, then obtain the endurance limit of the material, σ R. 只要在两个应力水平下做少量试件的疲劳试验,就可确定公式中的参量(β+1),进而得出材料的持久极限σR。
Investigation of test method for quick determining fatigue endurance limit of components by means of stepwise load 快速测定零部件疲劳极限方法的试验研究