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On classes of life distributions based on the mean time to failure function
Journal of Applied Probability, 2021AbstractThe performance and effectiveness of an age replacement policy can be assessed by its mean time to failure (MTTF) function. We develop shock model theory in different scenarios for classes of life distributions based on the MTTF function where the probabilities $\bar{P}_k$ of surviving the first k shocks are assumed to have discrete DMTTF ...
Ruhul Ali Khan +2 more
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Towards Approximating the Mean Time to Failure in Vehicular Clouds
IEEE Transactions on Intelligent Transportation Systems, 2018In a recent paper, Ghazizadeh et al. have studied vehicular clouds running on top of the vehicles in the parking lot of a major airport. The defining difference between vehicular clouds and their conventional counterparts is the unpredictable availability of computational resources.
Ryan Florin +3 more
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Computation of Mean Time to Failure for a System with Simple Redundancy
IEEE Transactions on Reliability, 1986A system consisting of several independent components in series can be made more reliable by adding an ''identical'' component in parallel to some of the components. Two mathematical series are presented for computing the mean time to failure for the system when the failure times of the components are exponentially distributed.
Sweet, Arnold L. +2 more
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Simulating System Mean‐Time‐to‐Failure on a Personal Computer
Computer Science Education, 1991Reliability is the probability that a component or system will operate successfully for a given length of time under specified conditions. Mean‐time‐to‐failure (MTTF) is the average life span of a typical representative of the system under study. We explore mathematical models of MTTF for frequently encountered configurations, including units in series,
Edward J. Fisher +2 more
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Reasoning About Mean Time to Failure in Vehicular Clouds
IEEE Transactions on Intelligent Transportation Systems, 2016In this work, we envision a vehicular cloud involving cars in the parking lot of a major airport. The owners of these cars are typically on travel for several days, providing a pool of cars that can serve as the basis for a data center at the airport.
Puya Ghazizadeh +3 more
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Defining mean time-to-failure in a particular failure-state for multi-failure-state systems
IEEE Transactions on Reliability, 2001In multi-failure-state systems which have both dangerous (critical) and safe (noncritical) failure states, it is both meaningful and important to be able to measure the MTTF in a particular failure state separately from MTTF in general. MTTF/sub D/ (fail dangerous) and MTTF/sub S/ (fail safe) are defined, emphasizing the engineering context of the ...
Julia V. Bukowski, William M. Goble
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On estimating the mean time to failure with unknown censoring
IEEE Transactions on Reliability, 1989Sometimes, in reliability studies, neither the life of all failed units nor the number of units still functioning is known at any specific time due to problems such as administrative delays. Consequently, one might consider an estimate of the mean time to failure (MTTF) based only on known failure times of part of the units.
Shanmugam, Ramalingam, Richards, Dale O.
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Control of mean time between failures
International Journal of Control, 1994A new optimal stochastic control problem is posed. The criterion is to maximize the mean-time-between-failures criterion given a certain reference value. It is shown that this control problem is closely related both to the problem of minimizing the variance of the signal—minimum variance control — and to the problem of minimizing the so-called ...
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On the mean time to failure of an age-replacement model in discrete time
Communications in Statistics - Theory and Methods, 2019Industrial feedback data play a key role in assessing and enhancing reliability of the operating systems or equipment.
K. K. Sudheesh +2 more
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Lifetime Testing, Redundancy, Reliability, and Mean Time to Failure
2013The environment of outer space is quite hostile to the many spacecraft that are now deployed in Earth orbit and beyond. There are many hazards in terms of severe thermal gradients, space weather from the sun and beyond, and intense radiation from the Van Allen belts as well as strong magnetic forces. Today, application satellites also must plan to cope
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