GMS 401 Lecture 4: Chapter 4s - Reliability
18 Dec 2016
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Chapter 4s Reliability
Reliability: the ability of a product or part to perform its intended function under a
prescribed set of conditions
Reliability is profitability
Redundancy: the use of backup components to increase reliability
Mean time to failure (MTTF): the average length of time before failure of a product
or component
Mean time between failures (MTBF): the average time from the up time after the
repaid following a failure to the next failure
Availability: the fraction of time a piece of equipment or a repairable product is
expected to be available for operation
Mean time to repair: the average length of time to repaid a failed item
Availability = MTBF / MTBF (Mean time between failures) + MTTR (Mean time to
repair)
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Document Summary
Reliability: the ability of a product or part to perform its intended function under a prescribed set of conditions. Redundancy: the use of backup components to increase reliability. Mean time to failure (mttf): the average length of time before failure of a product or component. Mean time between failures (mtbf): the average time from the up time after the repaid following a failure to the next failure. Availability: the fraction of time a piece of equipment or a repairable product is expected to be available for operation. Mean time to repair: the average length of time to repaid a failed item.
