直升机动部件小子样全尺寸疲劳试验件的x~2检验

本文将X~2检验——“检验一个小子样是否来自已知标准差的母体”方法应用于直升机动部件的疲劳试验数据统计处理中,并与传统方法获得的结论进行了对比。结果表明:同样的小子样试验数据,若运用检验合格的结论,在同样的可靠度下,能较大幅度地提高零件的疲劳寿命。

THE X~2 TEST OF SMALL SAMPLE FULL-SCALE FATIGUE TEST PIECES OF HELICOPTER DYNAMIC COMPONENTS

In this paper, a x2 test method - used to check whether a small sample derives from its determinate standard deviation population - is applied in the statistical treatment of the fatigue test data of helicopter dynamic components and the results are compared with those obtained by using conventional methods. It shows that if the conclusion is qualified in the same reliability, the fatigue lves of the components can be significantly improved by using the same sample that data.