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Titre: | Reliability, maintainability, and availability analysis of a computerized numerical control machine tool using Markov chains |
Auteur(s): | Patil, Rajkumar Bhimgonda Mellal, Mohamed Arezki Bewoor, Anand K. Al-Dahidi, Sameer |
Mots-clés: | steady-state availability Reliability Maintainability Computerized numerical control machine tool Markov chains |
Date de publication: | 2021 |
Editeur: | Budapest Tech Polytechnical Institution |
Collection/Numéro: | Acta Polytechnica Hungarica/ Vol.18, N°6 (2021);pp. 45-70 |
Résumé: | eliability, maintainability, and availability analysis of Computerized Numerical
Control Machine Tools (CNCMT) is vital as they are widely used in manufacturing
industries for mass production. This paper proposes a generalized framework for Time-
Between-Failure (TBF) and Time-To-Repair (TTR) data analysis, integrated with Markov
chains for estimating the system’s Steady State Availability (SSA). A case study of a typical
CNCMT illustrates the applicability and the effectiveness of the proposed framework.
The effect of variation of sub-systems' failure and repair rates on the availability of the
CNCMT is studied. The critical sub-systems from reliability, maintainability, and
availability point of view are identified. The analysis reveals that the CNCMT’s failure and
repair rates are nearly constant and the CNCMT fails four times per year. The Lubrication
Sub-system (LS) is the utmost severe sub-system as far as maintainability aspect is
concerned and Turret Sub-system (TS) is the utmost severe sub-system from a reliability
perspective |
URI/URL: | DOI 10.12700/APH.18.6.2021.6.3 http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/7139 |
ISSN: | 17858860 |
Collection(s) : | Publications Internationales
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