ARTICLE INFO ABSTRACT Keywords: Dependability Consecutive-k-out-of-n: F repairable system Rare-event simulation RESTART The reliability of consecutive-fc-out-of-n: F repairable systems and (fc-l)-step Markov dependence is studied. The model analyzed in this paper is more general than those of previous studies given that repair time and component lifetimes are random variables that follow a gene...

Mobile robots are notoriously unreliable. In order to make significant improvements in mobile robot reliability, we need quantitative methods and precise language for measuring and discussing reliability. Such methods exist within the reliability engineering literature but have seen little use in the design of mobile robots. In this report we present an overview of reliability engineering metho...

Two, ASENs and ZTNs, fault-tolerant multistage interconnection networks of different class are compared, based on their analytic bounds of MTTF, cost, and cost-effectiveness. The full-access condition and deadfault model are used for the MTTF analysis. The simulation study reveals that ZTNs are better in terms of cost and cost-effectiveness while both networks are equally reliable in terms of u...

The variation of permeability with depth can be probed indirectly by various means, including hydrologic models that use geothermal data as constraints and the progress of metamorphic reactions driven by fluid flow. Geothermal and metamorphic data combine to indicate that mean permeability (k) of tectonically active continental crust decreases with depth (z) according to log k ! )14–3.2 log z, ...

Mobile robots are notoriously unreliable. In order to make significant improvements in mobile robot reliability, we need quantitative methods and precise language for measuring and discussing reliability. Such methods exist within the reliability engineering literature but have seen little use in the design of mobile robots. In this report we present an overview of reliability engineering metho...

We study the reliability and sensitivity analysis of a system with M operating machines, S warm standbys, and a repairable service station. Failure times and service times of each machine (operating or standby) are assumed to be exponentially distributed. While the service station is working, it is subject to breakdowns according to a Poisson process. When the station breaks down, it requires ...

MTBF (mean time between failures) is the expected time between two successive failures of a system. Therefore, MTBF is a key reliability metric for systems that can be repaired or restored. MTTF (mean time to failure) is the expected time to failure of a system. Non-repairable systems can fail only once. Therefore, for a non-repairable system, MTTF is equivalent to the mean of its failure time ...

Probabilistic model based diagnosis com putes the posterior probabilities of failure of components from the prior probabilities of component failure and observations of sys tem behavior One problemwith this method is that such priors are almost never directly available One of the reasons is that the prior probability estimates include an implicit no tion of a time interval over which they are s...

In recent times in the business of semiconductor testing, the claim has been that Test Cost has begun to dominate the overall cost of product (die + packaging + test) in some product lines. The cost models that I have seen are simplistic models that just take into account the product yield and the per-second test cost. More recently, I have become even more concerned over the effects of Mean-Ti...

In this paper, the authors deal with a complex network having n-identical units in series and two identical standby units for evaluation of its ability measures. The authors have been used supplementary variables technique to formulate the mathematical equations for various flow-states of fig-1(b). These mathematical equations have been solved by the application of Laplace transform. The Laplac...