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Differential Importance Measure for Components Subjected to Aging Phenomena
Joint Authors
La Rovere, Stefano
Sperandii, Maria
Mandurino, Claudia
Vestrucci, Paolo
Source
Journal of Quality and Reliability Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-08
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Engineering Sciences and Information Technology
Economics & Business Administration
Abstract EN
The paper refers to the evaluation of the unavailability of systems made by repairable binary independent components subjected to aging phenomena.
Exponential, exponential-linear, and Weibull distributions are assumed for the components failure times.
We assume that components failure rate increases only slightly during the maintenance period, but we recognize the effectiveness of preventive maintenance only in presence of aging phenomena.
Importance measures allow the ranking of the input variables.
We propose analytical equations that allow the estimation of the first-order Differential Importance Measure (DIM) on the basis of the Birnbaum measures of components, under the hypothesis of uniform percentage changes of parameters.
Without further information than that used for the estimation of “DIM for components,” “DIM for parameters” allows considering separately the importance of random failures, aging phenomena, and preventive and corrective maintenance.
A two-step process is proposed for the system improvement, by increasing the components reliability and maintainability performance as much as possible (within the applicable technological limits) and then by optimizing preventive maintenance on them.
Some examples taken from the scientific literature are solved in order to verify the correctness of the analytical equations and to show their use.
American Psychological Association (APA)
La Rovere, Stefano& Vestrucci, Paolo& Sperandii, Maria& Mandurino, Claudia. 2013. Differential Importance Measure for Components Subjected to Aging Phenomena. Journal of Quality and Reliability Engineering،Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-510249
Modern Language Association (MLA)
La Rovere, Stefano…[et al.]. Differential Importance Measure for Components Subjected to Aging Phenomena. Journal of Quality and Reliability Engineering No. 2013 (2013), pp.1-11.
https://search.emarefa.net/detail/BIM-510249
American Medical Association (AMA)
La Rovere, Stefano& Vestrucci, Paolo& Sperandii, Maria& Mandurino, Claudia. Differential Importance Measure for Components Subjected to Aging Phenomena. Journal of Quality and Reliability Engineering. 2013. Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-510249
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-510249