Results 261 to 270 of about 904,656 (296)

An assessment of mean time between failures for a group of rolling bearings

2011 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering, 2011
Rolling bearings are usually considered to be non-repaired items the reliability of which is characterized by mean time to failure, or so called basic rating life. Reliability describes these parameters well in case the bearings are used in operation up to the very time the failure occurs, or during the time corresponding with basic rating life.
Zdenek Vintr, Michal Vintr
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Sequential Testing for Comparison of the Mean Time Between Failures for Two Systems

IEEE Transactions on Reliability, 2007
This study deals with simultaneous testing of two systems, one "basic" (subscript b), and the other "new" (n), both with an exponential distribution describing the times between failures. We test whether the mean TBFn/MTBFb ratio equals a given value, versus whether it is smaller than the given value. These tests yield a binomial pattern.
Yefim H. Michlin, Genady Ya. Grabarnik
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Availability compliance testing of systems with long mean time between failures

Reliability Engineering, 1986
Abstract Section 2 of this paper presents a simple way to design an availability compliance test terminated at a fixed time. Test parameters are selected by means of supplied nomograms. Section 3 contains a mathematical analysis of the test type in question with approximations adapted for systems with high availability ( >0·95 ).
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An electrical reliability metric for preventive maintenance: Mean time between failure plus finds

2015 IEEE Petroleum and Chemical Industry Committee Conference (PCIC), 2015
Electrical reliability can be measured by taking a systematic approach to documenting PM (preventive maintenance) records with a metric derived from its discovery finds. These finds, however minor, are leading indicators to equipment failures. Documenting and reviewing them justifies electrical PM programs, measures PM effectiveness, and optimizes PM ...
John Duenckel, Robert Soileau, Jerry Pittman   +2 more
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Construction individual values chart by using mean time between failures with application

Qalaai Zanist Scientific Journal, 2017
This study was conducted in order to use mean times of failure and another in the reliability in order to make chart individual values to quality control with the apply it. The study concluded with a conclusion that the average mean times of failure for production processes (tire factory) was in control case, because any of the samples did not locate ...
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Approximation of mean time between failure when a system has periodic maintenance

IEEE Transactions on Reliability, 2002
This paper describes a simple technique for estimating the mean time between failure (MTBF) of a system that has periodic maintenance at regular intervals. This type of maintenance is typically found in high reliability, mission-oriented applications where it is convenient to perform maintenance after the completion of the mission.
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Tables for Comparing Two Mean-Time-Between-Failures (MTBFs) for Unequal Test Times

1979
Abstract : Tables of critical values for carrying out the exact method of comparing two MTBFs for unequal test times are tabulated for .001, .01, .05, . 10, and .20 levels of significance with the ratio of the two test times ranging from 0.1 to 5.0 by increments of 0.1 and the total failures ranging from 1 to 100.
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MIL-STD-781C and Confidence Intervals on Mean Time between Failures

1979
Abstract : Various realistic examples illustrate how to obtain confidence limits on the mean time between failures (MTBF) of an exponential distribution from data obtained from one of the fixed-size or sequential test plans of MIL-STD- 871C. For fixed-length tests, the methods developed by B. Epstein and the modifications of H. L.
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Research on calculating aerospace single machine products mean time between failures using timing truncation method

International Conference on Mechanical Design and Simulation (MDS 2022), 2022
Yi Gong, Songjiang Feng
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An alternative for improving setup times and time between failures aiming at manufacturing lead time reduction

Production Engineering, 2021
Marcel Utiyama, Moacir Godinho Filho
exaly