Bora Cekyay and Süleyman Özekici. Reliability, MTTF and Availability Analysis of Systems with Exponential Lifetimes

Abstract. In this study, we analyze reliability, mean time to failure and availability of reliability systems where all lifetimes and repair times are exponentially distributed. It is assumed that all failed components are replaced whenever the system fails. We focus our attention mainly on coherent systems and series connection of standby redundant subsystems. We present closed form expressions for series connection of standby redundant subsystems and series connection of k-out-of-n subsystems with identical components in each subsystem. A byproduct of this analysis is a structural characterization of these measures as a function of the component failure rates.