A renewal process model with failure based PM and imperfect CM for unavailability exploration

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F22%3A10249443" target="_blank" >RIV/61989100:27240/22:10249443 - isvavai.cz</a>

Result on the web

<a href="https://www.emerald.com/insight/content/doi/10.1108/IJQRM-07-2020-0221/full/html" target="_blank" >https://www.emerald.com/insight/content/doi/10.1108/IJQRM-07-2020-0221/full/html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1108/IJQRM-07-2020-0221" target="_blank" >10.1108/IJQRM-07-2020-0221</a>

Result language

angličtina

Original language name

A renewal process model with failure based PM and imperfect CM for unavailability exploration

Original language description

Purpose: The paper aims to explore unavailability of dormant systems that are under both preventive and corrective maintenance. Preventive maintenance is considered as a failure based maintenance model, where full renew is realized at the occurrence of every nth failure. It proposes the imperfect corrective maintenance model, where each restoration process deteriorates the system lifetime, probability distribution of which is gradually changed via increasing failure rate. Design/methodology/approach: Basic reliability mathematics necessary for unavailability quantification of a system which undergoes a real aging process with maintenance has been derived proceeding from renewal theory. New renewal cycle was defined to cover the real aging process and the expectation of its length was determined. All events resulting in the failure of studied system were explored to determine their probabilities. An integral equation where the unavailability function characterizing studied system is its solution was derived. Findings: Preventive maintenance is closely connected with the occurrence of the nth failure, which starts its renew. The number n can be considered as a parameter which significantly influences the unavailability course. The paper shows that the real aging process characterized by imperfect repairs can significantly increase the unavailability courses in contrast with theoretical aging. This is true for both monitored and dormant systems. Originality/value: Although mathematical methods used in this article were inspired and influenced by the work of reference (van der Weide and Pandey, 2015), derivation of final formulas for unavailability quantification considering the new renewal cycle is original. Idea of the real aging process is new as well. This paper fulfils an identified need to manage the maintenance of realistically aging systems. (C) 2021, Emerald Publishing Limited.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10102 - Applied mathematics

Project

<a href="/en/project/EF16_019%2F0000867" target="_blank" >EF16_019/0000867: Research Centre of Advanced Mechatronic Systems</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Quality and Reliability Management

ISSN

0265-671X

e-ISSN

—

Volume of the periodical

39

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

16

Pages from-to

984-999

UT code for WoS article

000652567900001

EID of the result in the Scopus database

2-s2.0-85106345077