Paper Info
Title
Age-related maintenance versus reliability centred maintenance: a case study on aero-engines
Abstract
Reliability Centred Maintenance (RCM) is a procedure carried out as part of the logistic support analysis (LSA) process and is described in the US Department of Defence Military Standards (Mil Std 2173). RCM allows logisticians the opportunity to determine the best maintenance policy for each component within a system. However, the only data that are available to carryout RCM using Mil Std 2173 are of MTBF. This implies that all the necessary mathematical models need to be based on the exponential distribution. This is a serious drawback to the whole concept of RCM as the exponential distribution cannot be used to model items that fail due to wear, or any other mode that is related to their age. In this paper, a new approach to RCM is proposed using the concepts of soft life and hard life to optimise the total maintenance cost. For simplicity, only one mode of failure is considered for each component. However, the model can be readily applied to multiple failure modes. The proposed model is applied to find the optimal maintenance policies in the case of military aero-engines using Monte Carlo simulation. The case study shows a potential benefit from setting soft lives on relatively cheap components that can cause expensive, unplanned engine rejections. (C) 2000 Elsevier Science Ltd. All rights reserved.
Year
DOI
Venue
2000
10.1016/S0951-8320(99)00052-6
RELIABILITY ENGINEERING & SYSTEM SAFETY
Keywords
DocType
Volume
hard life,MTBF,maintenance-free operating period,opportunistic maintenance,reliability centred maintenance,simulation,soft life
Journal
67
Issue
ISSN
Citations 
2
0951-8320
15
PageRank 
References 
Authors
2.16
0
2
Name
Order
Citations
PageRank
J Crocker1152.16
U.D Kumar2152.16