نتایج جستجو برای preventive maintenance

تعداد نتایج: 145446  

Abdollahi, A. , Mollahassani-pour, M. , Nikbakhsh, S. , Rashidinejad, M. ,

Preventive maintenance scheduling of generating units is addressed as a long-term scheduling in power system studies aiming to increase the reliability incorporating cost reduction. It consists of knowing which generating units should be shut down for regular safety inspection. In this paper, a new formulation of preventive maintenance scheduling associated with cost reduction index (CRI) is pr...

Journal: :Comp. Opt. and Appl. 2006
Mike C. Bartholomew-Biggs, Bruce Christianson, Ming Jian Zuo,

We deal with the problem of scheduling preventive maintenance (PM) for a system so that, over its operating life, we minimize a performance function which reflects repair and replacement costs as well as the costs of the PM itself. It is assumed that a hazard rate model is known which predicts the frequency of system failure as a function of age. It is also assumed that each PM produces a step ...

Journal: :Rel. Eng. & Sys. Safety 2005
Shaomin Wu, Derek Clements-Croome,

In real-world environments it is usually difficult to specify the quality of a preventive maintenance (PM) action precisely. This uncertainty makes it problematic to optimise maintenance policy. This problem is tackled in this paper by assuming that the quality of a PM action is a random variable following a probability distribution. Two frequently studied PM models, a failure rate PM model and...

2015
Richard Barlow,

Preventive maintenance policies are also planned so that the overall reliability. The optimal level of preventive maintenance that maxipreventive maintenance. Maintenance policies can be further improved when they.We design an optimal preventive maintenance policy for a system of N items. An optimal maintenance policy for a system of N items, from a particular class of.Taken into considerations...

Journal: :Rel. Eng. & Sys. Safety 2004
C. S. Kim, I. Djamaludin, D. N. Prabhakar Murthy,

Preventive maintenance actions over the warranty period have an impact on the warranty servicing cost to the manufacturer and the cost to the buyer of fixing failures over the life of the product after the warranty expires. However, preventive maintenance costs money and is worthwhile only when these costs exceed the reduction in other costs. The paper deals with a model to determine when preve...

Journal: :Rel. Eng. & Sys. Safety 2011
Ming-Yi You, Hongguang Li, Guang Meng,

This paper develops two component-level control-limit preventive maintenance (PM) policies for systems subject to the joint effect of partial recovery PM acts (imperfect PM acts) and variable operational conditions, and investigates the properties of the proposed policies. The extended proportional hazards model (EPHM) is used to model the system failure likelihood influenced by both factors. S...

Production planning and maintenance are two important problems in manufacturing systems. Despite the relationship exists between these two problems due to sudden failures and production capacity occupied by maintenance activities, each of these problems planned separately and as a result program and model efficiencies reduce in the real world. The aim of integrated production and maintena...

I Almanar, I Azid, R Ahmad, S Kamaruddin,

In industries, Preventive Maintenance (PM) is not a new practice to minimise the sudden breakdown of production machine. PM will be performed at predetermine intervals to provide a balance between failure cost and component utilisation (aging). However, most of PM interval is based on experience or original equipment manufacturer (OEM) recommendations. Consequently, the benefits from PM are not...

Amir Ebrahimi Zade, Mani Sharifi, Mohammadreza Shahriari, Naghi Shoja, Sasan Barak,

This article investigates a JIT single machine scheduling problem with a periodic preventive maintenance. Also to maintain the quality of the products, there is a limitation on the maximum number of allowable jobs in each period. The proposed bi-objective mixed integer model minimizes total earliness-tardiness and makespan simultaneously. Due to the computational complexity of the problem, mult...

2012
Yu Liu, Yanfeng Li, Hong-Zhong Huang, Yuanhui Kuang,

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