基于均匀设计理论的非矩形试验区域恒加寿命试验优化设计方法  

Optimum Design of Accelerated Life Test Plan on non-rectangle Test Region Based on Uniform Design Theory

作　　者：陈文华[1] 朱志鹏[1] 高亮[2] 潘骏[1] 孔祥泽[1] 

机构地区：[1]浙江理工大学浙江省机电产品可靠性技术研究重点实验室,杭州310018 [2]四川农业大学,雅安625014

出　　处：《中国机械工程》2016年第15期2064-2068,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51275480);浙江省重点科技创新团队计划资助项目(2010R50005)

摘　　要：针对基于Escobar和Meeker设计思想的非矩形试验区域最优试验方案设计,当边界较为复杂时失效概率最大点难以求得的问题,以正常应力下寿命估计值的渐近方差最小为目标,在非矩形区域内选择两个应力水平点分别作为最高和最低应力水平点,以最高、最低应力水平以及各试验样本分配比例为设计变量,提出了一种基于均匀设计理论的非矩形试验区域恒加寿命试验方案优化设计方法。模拟计算结果表明,与基于Escobar和Meeker设计思想的最优试验方案相比较,所提出的设计方法具有相同的估计精度,为非矩形试验区域加速寿命试验方案设计提供了一种简便的方法。Aiming at the problems of hardly finding out the points of the maximum probability of failure on the complicated boundary curves when designed the optimal multiple stress accelerated life test plan on the non-rectangle test region based on Escobar-Meeker method, minimum variance of product life estimated value at normal working stresses was taken as design object for constant stress accelerated life test method. After selecting two stress level points as the highest level point and the lowest level point on the non-rectangle test region , the highest stress level , the lowest stress level of each accelerated factor and allocation proportion of test samples were adopted as design variables; the optimum design method of multiple stress accelerated life test on the non-rectangle test region was built based on uniform design theory. The computer simulation results show that the optimized test plan has the same estimation precision of test data compared to the optimized test plan based on the Escobar-Meeker method. The research fruits provide a simple method for the test plan design of mul- tiple stress accelerated life test on the non-rectangle test region.

关 键 词：均匀设计 非矩形试验区域 恒加寿命试验 优化设计 

分 类 号：TB114.3[理学—概率论与数理统计] V442[理学—数学]