Degrading systems availability analysis: analytical semi-Markov approach

• Autorzy: Kumar Varun , Kumar Girish , Singh Rajesh Kumar , Soni Umang

Identyfikatory

DOI

10.17531/ein.2021.1.20

• Języki publikacji: EN

Abstrakty

EN

This paper deals with modeling and analysis of complex mechanical systems that deteriorate with age. As systems age, the questions on their availability and reliability start to surface. The system is believed to suffer from internal stochastic degradation mechanism that is described as a gradual and continuous process of performance deterioration. Therefore, it becomes difficult for maintenance engineer to model such system. Semi-Markov approach is proposed to analyze the degradation of complex mechanical systems. It involves constructing states corresponding to the system functionality status and constructing kernel matrix between the states. The construction of the transition matrix takes the failure rate and repair rate into account. Once the steady-state probability of the embedded Markov chain is computed, one can compute the steady-state solution and finally, the system availability. System models based on perfect repair without opportunistic and with opportunistic maintenance have been developed and the benefits of opportunistic maintenance are quantified in terms of increased system availability. The proposed methodology is demonstrated for a two-stage reciprocating air compressor with intercooler in between, system in series configuration.

Słowa kluczowe

EN

availability; perfect repair; opportunistic maintenance; embedded Markov chain; EMC; cumulative density function; CDF; semi-Markov process; SMP

• Wydawca: Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
• Czasopismo: Eksploatacja i Niezawodność
• Rocznik: 2021
• Tom: Vol. 23, no. 1
• Strony: 195--208
• Opis fizyczny: Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Kumar Varun

• Netaji Subhas Institute of Technology, Delhi, India

autor

Kumar Girish

• Delhi Technological University, Delhi, India

autor

Singh Rajesh Kumar

• Management Development Institute, Gurugram, India

autor

Soni Umang

• Netaji Subhas Institute of Technology, Delhi, India

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).