Results 251 to 260 of about 1,519,103 (304)

A general preventive maintenance policy

Optimization, 1976
The paper deals with the optimum preventive maintenance of systems, if two kinds of system failures mag arise. Special cases of the investigated model are the age replacement policy and the minimal repair policy.
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Replacement Policies with Maintenances

2017
Maintenance actions, such as preventive and corrective maintenances [1], minor and major maintenances [39], routine and non-routine maintenances [40, 41], etc., have been proposed in pairs in literatures.
Xufeng Zhao, Toshio Nakagawa
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Maintenance Modeling and Policies

2013
The systems used in production, transportation services, and communication services constitute the majority part of not only industrial activities but also our daily life. Most of them have many units or components with various structure that will degrade with time or usage, and even suffer from a sudden failure due to the random shocks.
Yaping Wang, Hoang Pham
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Optimal Maintenance Policy for a Fleet of Vehicles

Management Science, 1975
The optimal maintenance and replacement policy for a fleet of vehicles is discussed in this paper that reflects a research effort of three years. The tasks that faced the research team were to list feasible policies, formulate their stochastic behaviour and recommend solution techniques on the strength of the available data.
I. Brosh, E. Shlifer, Y. Zeira
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Maintenance Policy of a Network with Traffic Reconfiguration

2nd International Conference on Dependability of Computer Systems (DepCoS-RELCOMEX '07), 2007
Networks are considered as a set of all their nodes, connections, hardware, software and personnel (users, administrators and managers), participating in the realization of distributed tasks. The networks are operating in an often hostile environment, exposed to such threats as attacks, viruses and human faults.
Wojciech Zamojski, Dariusz Caban
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An inventory control policy for maintenance networks

2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) (IEEE Cat. No.04CH37566), 2005
Many industries rely on maintenance networks to maintain their key assets, and a key characteristic of such maintenance services is the wide use of rotable parts. In view of today's time-based competition, efficiently managing the rotable inventory becomes imperative for a maintenance network to achieve short turn-around-times and low costs.
Ming Ni, Peter B. Luh, Bo Xiong, Shi-Chung Chang   +3 more
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Maintenance policies with two-dimensional warranty

Reliability Engineering & System Safety, 2002
Abstract A new maintenance policy which minimizes the total expected servicing cost for an item with two-dimensional warranty is proposed. An iterative procedure to estimate the item's failure rate function from historical observations and an optimization algorithm based on Monte Carlo simulation are applied to obtain the best maintenance policy ...
Tom Chen, Elmira Popova
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A predictive maintenance policy with imperfect monitoring

Reliability Engineering & System Safety, 2010
For many systems, failure is a very dangerous or costly event. To reduce the occurrence of this event, it is necessary to implement a preventive maintenance policy to replace the critical elements before failure. Since elements do not often exhibit incipient faults, they are replaced before a complete exploiting of their useful life.
CURCURU', Giuseppe, GALANTE, Giacomo Maria, LOMBARDO, Alberto   +2 more
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“Optimal” Policy in a Maintenance Cost Problem

Operations Research, 1967
This paper is concerned with estimating the “optimal” policy when the (unknown) cost function C(x) is nonlinear with a single minimum, and can be approximated in the neighborhood of the minimum by a polynomial regression. The value x0, at which C(x) attains minimum, is approximated by ◯0 obtained from the regression function, and the expected value of
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Optimum Policies for a System with Imperfect Maintenance

IEEE Transactions on Reliability, 1987
This paper considers a system with imperfect maintenance, i.e., after maintenance the system may be either (a) not changed, or (b) failed, with certain probabilities. Formulas for the MTTF and the availability are obtained and the policy to maximize availability is derived. A numerical example applies these results to a triple redundant system.
Nakagawa, Toshio, Yasui, Kazumi
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