Results 161 to 170 of about 27,010 (208)
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Sequential imperfect preventive maintenance policies: A case study

Microelectronics Reliability, 1992
Abstract In this paper, two preventive maintenance (PM) policies for the bus engines of a transport network have been considered. Based on the mean time to failure (MTTF) data of the engines of a particular make and model, maintenance policies are developed where the failure rate of the engines does not exceed the pre-determined level of maximum ...
V. Jayabalan, Dipak Chaudhuri
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Imperfect Preventive Maintenance Models

2000
This chapter surveys the earlier results of imperfect preventive maintenance (pm) models which could be applied to actual systems; (i) the unit after pm has the same hazard rate as before pm, (ii) the age of the unit becomes x units of time younger at pm, and (iii) the age reduces to at when it was t before pm.
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AN OPTIMAL BLOCK PREVENTIVE MAINTENANCE POLICY FOR A MULTI-UNIT SYSTEM CONSIDERING IMPERFECT MAINTENANCE [PDF]

open access: possibleAsia-Pacific Journal of Operational Research, 2009
A block preventive maintenance (PM) policy for a multi-unit system composed of identical units is investigated in this paper. The block PM model of this paper considers periodic inspection and periodic imperfect maintenance. The imperfect maintenance effects are formulated using improvement factor and age reduction model.
J. H. PARK   +3 more
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Age-based hybrid model for imperfect preventive maintenance

IIE Transactions, 2006
Several sequential Preventive Maintenance (PM) models for predetermined PM interval policies currently exist in the literature, however, much less effort has been devoted to age-based policies. The purpose of this paper is to develop a hybrid age-based model for imperfect PM involving maintainable and non-maintainable failure modes. The proposed hybrid
Sami El-Ferik, Mohamed Ben-Daya
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Maintenance optimization for second‐hand products following periodic imperfect preventive maintenance warranty period

Applied Stochastic Models in Business and Industry, 2019
AbstractThe maintenance policy for a product's life cycle differs for second‐hand and new products. Although several maintenance policies for second‐hand products exist in the literature, they are rarely investigated with reference to periodic inspection and preventive maintenance action during the warranty period. In this research, we study an optimal
Lim, Jae-Hak   +2 more
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A production model with imperfect preventive maintenance

Journal of Statistics and Management Systems, 2005
Abstract We study a production system subjected to a continuous deteriorating which can go “out-of-control” while producing items. Once out of control, the process produces a fixed proportion of defective items until the “out-of-control” state is restored by a scheduled maintenance.
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Integrated Maintenance-Quality policy with rework process under improved imperfect preventive maintenance

Reliability Engineering & System Safety, 2018
Abstract We consider a manufacturing system subject to an increasing random failure rate and producing conforming and non-conforming items. Two types of non-defective products are considered: high quality items noted first-rate products and substandard quality items noted second-rate products.
Gouiaa-Mtibaa, A.   +3 more
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Sequential imperfect preventive maintenance policy with random maintenance quality under reliability limit

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2011
To determine the optimal maintenance number for a system with random maintenance quality in infinite time horizon, a sequential imperfect preventive maintenance model considering reliability limit is proposed. The proposed model is derived from the combination of the Kijima type virtual age model and the failure rate adjustment model.
Z Wang, J Yang, G Wang, G Zhang
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Optimization of imperfect preventive maintenance for multi-state systems

Reliability Engineering & System Safety, 2000
Abstract The paper generalizes a preventive maintenance optimization problem to multi-state systems, which have a range of performance levels. Multi-state system reliability is defined as the ability to satisfy given demand. The reliability of system elements is characterized by their hazard functions.
G. Levitin, A. Lisnianski
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Multi-objective imperfect preventive maintenance optimisation with NSGA-II

International Journal of Production Research, 2019
Maintenance optimisation is a multi-objective problem in nature, and it usually needs to achieve a trade-off among the conflicting objectives.
Chun Su, Yang Liu
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