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Citation - WoS: 5
Citation - Scopus: 8
Reliability Properties of Systems With Two Exchangeable Log-Logistic Components
(Taylor & Francis inc, 2012) Eryilmaz, Serkan
In this article, we study the reliability properties of systems under bivariate log-logistic model which comes out from a particular stress-strength analysis. For this model, we obtain basic reliability characteristics of series and parallel systems and investigate their properties. We also derive distribution and moments of cold standby system under the above mentioned exchangeable model.
Citation - WoS: 11
Citation - Scopus: 15
Optimal Age Replacement Policy for Discrete Time Parallel Systems
(Springer, 2023) Eryilmaz, Serkan; Tank, Fatih
In the case of discrete age replacement policy, a system whose lifetime is measured by the number cycles is replaced preventively after a specific number of cycles or correctively at failure, whichever occurs first. Under the discrete setup, the policy has been mostly considered for single unit systems. In this paper, a discrete time age replacement policy is studied for a parallel system that consists of components having discretely distributed lifetimes. In particular, the necessary conditions for the unique and finite replacement cycle that minimize the expected cost rate are obtained. The theoretical results are illustrated with numerical examples to observe the effect of the cost values and the mean lifetime of the components on the optimal replacement cycle.