关键词: 均匀设计, 非矩形试验区域, 恒加寿命试验, 优化设计

Abstract: 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 multiple stress accelerated life test on the non-rectangle test region.

Key words: uniform design, non-rectangle test region, constant accelerated life test, optimum design