Development Of Decision Model For Maintenance Analysis Of Non-Repairable Component By Considering The External Factor
Loading...
Date
2007-07
Authors
AHMAD, ROSMAINI
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Preventive Maintenance (PM) is one of the strategies that can be applied to
reduce the machine breakdown problems due to unplanned maintenance. However,
the application of PM in term of when is the best time to carry out the PM is an
important issue. The answer to this question should be based on an adequate
maintenance analysis. The existing study in determining the PM time is not based on
an adequate maintenance analysis, where there are not considered the external factor
(covariate) and without understanding the failure mechanism (physical failure).
Therefore, the determination of PM time is not accurate enough and reduced the PM
benefits.
In this research, a decision model of maintenance analysis by considering the
external factor (covariate) and physical failure has been developed in order to
determine the more accurate time of PM. Therefore, the PM strategy that has been
applied can maximise the benefits of PM. In order to validate this model, a case study
was carried out on a processing industry in Malaysia. The case study only focused on
non-repairable components in a machine.
The results from this physical failure analysis have identified the possible
external factors (covariates) that influence the component failure and have classified
the censored and uncensored data. This information is being used for the next analysis
(covariate analysis) in the decision model. The result shows that some identified
covariates have significant effects to the component failure. Thus, the parameter of
covariates effects is used to determine more accurate time of PM. The result of PM
time determination shows that there has a significant difference of PM time with and
without considering the external factor. Therefore, this result implies that more accurate
time of PM should be determined by considering the external factor (covariate).
Description
Keywords
Development Of Decision Model For Maintenance Analysis Of , Non-Repairable Component By Considering The External Factor