Life scatter factor of time truncated zero-failure data subjected to normal distribution

FU Hui-min; ZHANG Yong-bo

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Life scatter factor of time truncated zero-failure data subjected to normal distribution

更新时间：2026-07-07

- Life scatter factor of time truncated zero-failure data subjected to normal distribution
- Vol. 26, Issue 8, (2011)
- 作者机构：
  
  北京航空航天大学小样本技术研究中心,北京,100191
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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FU Hui-min, ZHANG Yong-bo. Life scatter factor of time truncated zero-failure data subjected to normal distribution[J]. 2011, 26(8).
DOI：

FU Hui-min, ZHANG Yong-bo. Life scatter factor of time truncated zero-failure data subjected to normal distribution[J]. 2011, 26(8). DOI：

摘要

针对现有分散系数计算公式只适用于完全数据

以及近年来在寿命试验中大量出现的无失效数据并不适用的情况

将完全数据的寿命分散系数的概念推广到定时无失效寿命数据

提出定时无失效数据寿命分散系数方法

给出了相应的寿命分散系数计算公式.理论分析和结算结果表明

定时无失效数据寿命分散系数Lf*明显小于完全数据寿命分散系数Lf

从而能有效提高被完全数据寿命分散系数过分压低的安全使用寿命.

Abstract

For the existing method to calculate the life scatter factor only fits to complete data

it is not suitable for the time truncated zero-failure data which are significantly increasing in the life tests. Therefore

this study introduced the theory of complete data scatter factor into the situation of time truncated zero-failure data

and proposed a method for the life analysis of normal time truncated zero-failure data by providing the formula of life scatter calculation. According to the theory analysis and calculating result

it shows that the scatter factor of time truncated zero-failure data is significantly smaller than the completed data

and thus the method proposed by this study can fully utilize the depressed safety life by complete data scatter factor method.

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Related Institution

Beijing University of Aeronautics and Astronautics

Beijing Aerospace Propulsion Institute，China Aerospace Science and Technology Corporation

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System Engineering Department，MTU Maintenance Zhuhai Company Limited

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