Subjective estimation of the delay time distribution in maintenance modelling
Article Abstract:
A survey is conducted to determine problems related to the CW method, a technique used in acquiring subjective estimates of delay time distribution in maintenance modeling. In addition, the extent of the literature on subjective probability and expert judgment is evaluated. A new procedure for computing the subjective delay time estimate that includes steps such as problem identification, expert identification and choice, question formulation, elicitation, calibration and combination is proposed.
Publication Name: European Journal of Operational Research
Subject: Business, international
ISSN: 0377-2217
Year: 1997
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Maintenance scheduling under age replacement policy using proportional hazards model and TTT-plotting
Article Abstract:
The optimum maintenance time interval used for the threshold values of monitored variables under the age replacement policy can be estimated using a reliability based method which considers the value of monitored variables. This approach requires computations such as the maintenance cost equation, the proportional hazards model, the reliability function and the total time on test plot. However, the method is based on the assumption that the required values are available just before a failure.
Publication Name: European Journal of Operational Research
Subject: Business, international
ISSN: 0377-2217
Year: 1997
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Preventive maintenance with limited historical data
Article Abstract:
A model of preventive maintenance was developed to help in deciding the frequency of performing preventive maintenance if there is limited historical data regarding equipment breakdown. The model considers the time until breakdown as a discrete random variable whose probability distribution is not exactly known, and develops an optimal Bayesian strategy for choosing the preventive maintenance interval variable. One of two heuristic methods tested was shown to result in less cost penalties.
Publication Name: European Journal of Operational Research
Subject: Business, international
ISSN: 0377-2217
Year: 1995
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