摘要
从可靠性寿命的定义出发,在一定的假设前提下,导出了双参数中威布尔分布的斜率参量α和对数正态分布子样标准差σ之间的关系;进而得到建立在对数正态分布基础上的疲劳寿命N_(90/99.9)和建立在双参数威布尔分布基础上的疲劳寿命N_(95/95)之间的关系;计算结果表明上述两类可靠性指标是一致的。
According to the definition of reliability life, on certain condition of assumption, the relation between the slope parameter a of the two parameter Weibull distribution and the sample standard deviation a is introduced in this paper, and then, the relation between the fatigue life N90/99.9, the reliability index of which is based on the lognormal distribution, and the fatigue life N95 / 95, the reliability index of which is based on the two parameter Weibull distribution, is introduced. Calculated results show that the forenamed two kinds of reliability indexes are identical.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1993年第3期A185-A187,共3页
Acta Aeronautica et Astronautica Sinica
