| 一种新的Weibull分布恒定应力加速寿命试验分析方法 |
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| 引用本文： | 张春华,陈循,李岳.一种新的Weibull分布恒定应力加速寿命试验分析方法[J].国防科技大学学报,2002,24(2):81-84. |
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| 作者姓名： | 张春华 陈循 李岳 |
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| 作者单位： | 国防科技大学机电工程与自动化学院,湖南,长沙,410073 |
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| 基金项目： | 武器装备预研项目资助 (4 13 190 3 0 10 1) |
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| 摘 要： | 分析了Weibull分布恒定应力加速寿命试验常用的二步分析方法存在的不足 ,建立了一种新的构造数据分析方法。考虑到分布参数的相关性 ,该方法引入了Weibull分布特征寿命参数的二次估计 ,在模型拟合优度上高于原来的二步分析方法 ,使分析精度得到了改善。同时 ,该方法避免了原来二步分析方法的查表过程 ,便于软件实现和工程实际应用。
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| 关 键 词： | 加速寿命试验 恒定应力试验 Weibull分布 二步分析方法 构造数据方法 |
| 文章编号： | 1001-2486(2002)02-0081-04 |
| 收稿时间： | 2001/12/11 0:00:00 |
| 修稿时间： | 2001年12月11 |
Analysis for Constant-stress Accelerated Life Testing Data under Weibull Life Distribution |
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| ZHANG Chunhu,CHEN Xun and LI Yue.Analysis for Constant-stress Accelerated Life Testing Data under Weibull Life Distribution[J].Journal of National University of Defense Technology,2002,24(2):81-84. |
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| Authors: | ZHANG Chunhu CHEN Xun and LI Yue |
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| Affiliation: | College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073, China;College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073, China;College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | The 2 step analysis method is the most widely used one in the statistical analysis for constant stress accelerated life testing under Weibull distribution. Aiming at the deficiency of the 2 step analysis method, this paper develops a new analysis method based on constructed data. The method takes the relativity between Weibull distribution parameters into account, and introduces the 2nd. estimation for characteristic life of Weibull distribution. The method exceeds the 2 step analysis on model fitting optimization, and it improves the precision of estimation for accelerated life testing in turn. Moreover, the method is more convenient for software realization and engineering application. |
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| Keywords: | accelerated life testing constant stress testing Weibull distribution 2 step analysis method constructed data |
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