摘要
为缩短渐近污垢试验时间,本文定义了污垢寿命,利用恒定应力加速寿命试验(简称恒加试验),基于定数截尾 指数寿命统计分析方法,求得加速系数a, b近似最小二乘估计,然后由加速模型求得在正常应力水平下的平均寿命估 计。实例计算结果表明,对渐近型污垢热阻进行加速试验是可信的,也是可行的。这对污垢试验研究具有重要价值。
In order to shorten the time of fouling test, fouling-life was defined, The statistical analysis method for censored exponential life data under constant-stress accelerated life testing models was given. The accelerated coefficients a and b were obtained. By using the accelerated model, the estimators of the fouling life under the usual stress could be obtained. The computing example was given. Results indicated that it is credibility and feasibility to proceed accelerated life test of asymptotic fouling thermal resistance, and will be of important value to the research of fouling test.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2004年第2期326-328,共3页
Journal of Engineering Thermophysics
基金
吉林省科技发展计划项目资助(No.20020412)
原国家电力公司再大科技项目资助(No.SPKJ 013-07)
关键词
污垢热阻
污垢寿命
定数截尾试验
污垢加速模型
恒定应力加速寿命试验
fouling thermal resistance
fouling-life
constant-stress accelerated life test
type-censoring test
fouling accelerated model
