Reliability assessment of a NSP system under constant triangular fuzzy failure rates

S. Malik, S.C. Malik, N. Nandal and A.D. Yadav

International Journal of Industrial and Systems Engineering, 2025, vol. 49, issue 4, 405-420

Abstract: Here, the reliability of a non-series-parallel system (NSP) has been examined considering fuzzy failure rates. There are seven non-identical components in the system, which are arranged into three structures. The two structures operate in parallel and each having three components connected in series; while the third structure has a single component connected with the extreme components of the parallel structures. The expression for reliability of the system is assessed using the path tracing method. The failure rate of the components is assumed as constant triangular fuzzy number and thus they follow the exponential distribution. The α-cut method is used to defuzzify these fuzzy numbers for determining reliability measures. The intervals for fuzzy reliability and MTSF of the system have been computed for both non-identical and identical components. An illustration of RLC system has been described to highlight the application part of the research work.

Keywords: fuzzy reliability measures; NSP system; exponential failure laws; α-cut approach; triangular membership function. (search for similar items in EconPapers)
Date: 2025
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