Bathtub shaped failure rates from mixtures: A practical point of view

被引：27

作者：

Wondmagegnehu, EI ^{[1
]}

Navarro, J

Hernandez, PJ

机构：

[1] Western Michigan Univ, Dept Stat, Kalamazoo, MI 49008 USA

[2] Univ Murcia, Fac Matemat, Dept Estadist & IO, E-30100 Murcia, Spain

[3] Univ Politecn Cartagena, Fac Ciencias Empresa, Dept Mtodos cuantitat & Informat, Murcia 30203, Spain

来源：

IEEE TRANSACTIONS ON RELIABILITY | 2005年 / 54卷 / 02期

关键词：

bathtub curve; failure rate function; mixture of distributions; reliability function;

D O I：

10.1109/TR.2005.847271

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

We show that a bathtub shaped failure rate can be obtained from a mixture of two increasing failure rate (IFR) models. Specifically, we study the failure rate of the mixture of an exponential distribution, and a Weibull distribution with strictly increasing failure rate. Under some reasonable conditions, we show that, from a practical point of view, the mixture failure rate is bathtub. Similar results can be obtained from other mixtures.

引用

页码：270 / 275

页数：6

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