Abstract
Burn-in is a widely used engineering method which is adopted to eliminate defective items before they are shipped to customers or put into operation. In the studies of burn-in, the assumption of a bathtub shaped failure rate function is usually employed, and optimal burn-in procedures are investigated. In this paper, however, we assume that the population is composed of two ordered subpopulations, and optimal burn-in procedures are studied in this context. Two types of risks are defined, and an optimal burn-in procedure is studied which minimizes the weighted risks. The joint optimal solutions for the optimal burn-in procedure, which minimizes the mean number of repairs during the field operation, are also investigated.
| Original language | English |
|---|---|
| Article number | 5545501 |
| Pages (from-to) | 635-643 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Reliability |
| Volume | 59 |
| Issue number | 4 |
| DOIs | |
| State | Published - Dec 2010 |
Bibliographical note
Funding Information:Manuscript received August 07, 2009; revised February 15, 2010; accepted April 14, 2010. Date of publication August 09, 2010; date of current version November 30, 2010. The work of the J. H. Cha was supported by the Korea Science and Engineering Foundation (KOSEF) under Grant 009-0072661, funded by the Korea government (MOST). The work of the M. Finkelstein was supported by the National Research Foundation of South Africa (NRF) under Grant FA2006040700002. Associate Editor: R. H. Yeh.
Keywords
- Burn-in procedure
- main population
- minimal repair
- mixed population
- ordered subpopulations
- stochastic order
- weighted risk