Failure, repair and replacement analysis of a navy subsystem: case study of a pump

✍ Scribed by Gaver, Donald P. ;Jacobs, Patricia A. ;Dudenhoeffer, Donald D.

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 90 KB
• Volume: 13
• Category: Article
• ISSN: 8755-0024
• DOI: 10.1002/(sici)1099-0747(199709/12)13:3/4<369::aid-asm330>3.0.co;2-6

✦ Synopsis

An age-replacement policy may be used to minimize the cost of replacement and repair of a system whose rate of repairable failures increases with age. In this paper we model the failure times before replacement of one such system-a pump used on a submarine-by a non-homogeneous Poisson process having log-linear hazard rate which is a function of age. Maximum likelihood is used to estimate model parameters. A renewal-reward process is used to obtain estimates of log-run average costs of age-replacement policies. It should be noted that the policy obtained does not recognize possible between-submarine differences but does acknowledge that noise from a submarine pump is not to be tolerated.