Results 281 to 290 of about 1,446,763 (330)

Simulating System Mean‐Time‐to‐Failure on a Personal Computer

Computer Science Education, 1991
Reliability 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, Roger L. Hayen, James P. Scott   +2 more
openaire   +1 more source

On estimating the mean time to failure with unknown censoring

IEEE Transactions on Reliability, 1989
Sometimes, 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.
openaire   +2 more sources

Control of mean time between failures

International Journal of Control, 1994
A 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 ...
openaire   +1 more source

Weibull accelerated failure time regression model for remaining useful life prediction of bearing working under multiple operating conditions

, 2019
The rolling element bearings in industry applications operate at different operating conditions. The approaches for remaining useful life (RUL) prediction developed so far are limited to bearings operating under a single operating condition.
Pradeep Kundu, A. Darpe, M. Kulkarni
semanticscholar   +1 more source

Sequential Test for Arbitrary Ratio of Mean Times Between Failures

International Journal of Operations Research and Information Systems, 2011
This paper describes a planning methodology and tools for a truncated SPRT (sequential probability ratio test) for checking the means ratio of the times between failures (assumed to be exponentially distributed) of two items. The problem is considered for the situation in which the ratio may differ from unity, whereby the results are applicable for any
Yefim Haim Michlin, Dov Ingman, Yoram Dayan   +2 more
openaire   +1 more source

Maximizing mean-time to failure in k-resilient systems with repair

IEEE Transactions on Computers, 1997
A k-resilient system with N components can tolerate up to k component failures and still function correctly. We consider k-resilient systems where the number of component failures is a constant fraction of the total number of components, that is k=N/c and c is a constant such that 2/spl les ...
José Fridman, Sampath Rangarajan
openaire   +1 more source

Lifetime Testing, Redundancy, Reliability, and Mean Time to Failure

2013
The 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
openaire   +1 more source

Mean Time to Achieve a Failure-Free Requirement with Imperfect Repair

IEEE Transactions on Reliability, 1985
Summary: This paper obtains expressions for the mean test time to achieve a failure-free requirement with imperfect repair, under two plans. First do complete repair (good as new) at an even number of failures and partial repair (bad as old) otherwise. Next do complete repair at every k-th failure and partial repair otherwise.
openaire   +1 more source

Adaptive machine learning with physics-based simulations for mean time to failure prediction of engineering systems

Reliability Engineering and System Safety, 2023
Bei Wu, Yanwen Xu, Yumeng Li
exaly  

Mean-time-to-failure study of flip chip solder joints on Cu/Ni(V)/Al thin-film under-bump-metallization

, 2003
W. Choi, E. Yeh, K. Tu
semanticscholar   +1 more source