中文摘要：

研究GH4133轮盘材料疲劳失效概率分布类型,通过经验分布函数法和平均失效率函数法处理疲劳失效数据,根据所得到的数据信息假设轮盘材料疲劳失效概率分布类型为正态分布、对数正态分布或三参数的威布尔分布。先对三个分布分别进行参数估计再利用柯尔莫哥洛夫拟合优度检验法,检验分布函数总体拟合效果。并绘制所确定分布的失效率曲线与平均失效率曲线比验。综合比较同温度不同应变比、同应变比不同温度下各组数据,得出GH4133轮盘材料的疲劳失效分布函数以对数正态分布函数为最佳。

英文摘要：

Studying of probability distribution types of fatigue failure for GH4133 disc material,through the empirical distribution function and the average failure rate function methods to deal with the fatigue failure data. Based on the obtained data information,hypothesizing disk material fatigue failure probability distribution is the normal distribution, the lognormal distribution or the three parameter Weibull distribution. By means of parameter estimation for the three distributions,then using the Kolmogorov test of goodness fit method,to test the overall fitting effect of this distribution function. And to plot failure rate curves which distribution has been determined compare with the average failure rate curves. Comparing the data of each group which is under the same temperature with different strain ratio and the same stain ratio with different temperature then come to conclusion that the lognormal distribution is best fatigue failure distribution function for GH4133 disk material.