| 输油泵加速寿命试验方法及可靠性研究 |
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| 引用本文： | 张苹苹,卢建生.输油泵加速寿命试验方法及可靠性研究[J].北京航空航天大学学报,1992(1):65-71. |
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| 作者姓名： | 张苹苹 卢建生 |
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| 作者单位： | 北京航空航天大学工程系统工程系
(张苹苹)，航空航天部511厂
(卢建生，张增良)，航空航天部511厂(胡柏林) |
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| 摘 要： | 以机械泵为例,选用压力为加速应力,采用恒定应力加速寿命试验方法和威布尔分布最佳线性无偏估计法进行数据处理,求得产品的寿命及其可靠性特征值和加速系数,解决了泵类产品寿命试验长、费用高、不知其可靠性指标的难题,缩短寿命试验时间6倍。找出了产品的薄弱环节与失效模式、失效机理,为改进和提高产品性能提供了可靠依据。
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| 关 键 词： | 输油泵 加速寿命试验 压力 可靠性 |
THE RESEARCH OF RELIABILITY AND ACCELERATED LIFE TESTS METHOD OF OIL-LINE PUMPS |
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| Zhang Pingping.THE RESEARCH OF RELIABILITY AND ACCELERATED LIFE TESTS METHOD OF OIL-LINE PUMPS[J].Journal of Beijing University of Aeronautics and Astronautics,1992(1):65-71. |
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| Authors: | Zhang Pingping |
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| Institution: | Zhang Pingping(Dept. of System Eng. of Eng. Tech. )Lu Jiansheng Zhang Zengliang Hu Boling(511 Factory of Ministry of Aeronautics and Astronautics) |
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| Abstract: | In this paper,using mechanical pumps as an example and adopting its working pressure as accelerated stress to show how to determine the useful life of a product and its corresponding reliability characteristic values and acceleration coefficient by means of constant stress accelerated life test and conducting data processing with best linear undeviated estimation of weibull distribution.The existing difficulties of long period of life test time,high test cost,and unknown reliability indexes are then resolved.The overall period of life test time has been shortened to one sixth of the original period of life test time.The weak elements,failure modes,and failure mechanisms of the product are identified as well.It provides a scientific base to improve the performance of a product. |
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| Keywords: | oil-line pumps accelerated life tests pressure reliability analysis |
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