中国工程科学2015，Vol.17Issue(5)：31-37,7.
基于风险分析的可靠性指标加速验证方法研究
Zero-failure accelerated reliability demonstration test method based on degradation model
张辉睿1
作者信息
- 1. 中国船舶重工集团公司第719研究所,武汉430050
- 折叠
摘要
Abstract
Traditional life demonstration test is conducted under normal conditions and fails to use degradation observations,thus requires large amount of time and money. We can employ degradation data to predict whether a unit will pass the test by the end of test,and the test can be terminated early when this prediction does not cost unacceptable risk. Also higher stress can ac-celerate the degradation of the unit to cut down the test time. Thus it is necessary to propose a method that take advantage of both degradation data and accelerated test to reduce the test time and cost,which is done by this article. In particular,the article propose an approach to analyses and calculate the additional risks caused by early termination of the test and applying higher stress based on degradation model,then the minimum sample size of different test time can be picked. The article also use optimal plan to give expected test time and give deciding rules of terminating the test for each unit. At last,the method is illustrated by an example,showing that the method is efficient in reducing test time.关键词
退化数据/加速验证试验/可靠性验证/风险分析/优化设计Key words
degradation model/accelerated testing/life demonstration/risk analysis/opti-mum plan分类
军事科技引用本文复制引用
张辉睿..基于风险分析的可靠性指标加速验证方法研究[J].中国工程科学,2015,17(5):31-37,7.
