Open AccessOptimal Age-Based Preventive Maintenance Policy for a System Subject to Cumulative Damage Degradation and Random Shocks
Author(s) -
W. A. Akpan,
A. A. Okon,
E. J. Awaka-Ama
Publication year - 2021
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.g8972.0610821
Subject(s) - degradation (telecommunications) , preventive maintenance , reliability engineering , shock (circulatory) , reliability (semiconductor) , random effects model , optimal maintenance , duration (music) , cumulative distribution function , random variable , computer science , statistics , econometrics , engineering , mathematics , probability density function , medicine , physics , telecommunications , power (physics) , meta analysis , quantum mechanics , acoustics
This research investigates the problem of cumulative degradation and random shocks a system like a centrifugal pump may experience during normal and adverse operating conditions. An accelerated life testing method was employed to determine the degradation of the pump under cumulative damage degradation and random shocks conditions. An age- Based policy was used to determine the optimum time interval that will minimize the total expected cost of the system. The random shock increases the number of failures and hence reduces the reliability of the system. The total expected preventive maintenance cost obtained varies from N1700.00 (One thousand seven hundred naira) to N16,000.00 (sixteen thousand naira), depending on the shock and shock duration. The methodology presented is useful and thus recommended for use to study cumulative damage degradation and random shocks for similar systems.