GMS 401 Chapter Notes - Chapter 4: Preventive Maintenance, Mean Time Between Failures
1 Dec 2012
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Document Summary
Reliability: the ability of a product, part, or system to perform its intended function under a prescribed set of conditions. In effect, reliability is a probability (if an item has a reliability of . 90, this also means that it has a 90% probability of functioning as intended. The probability that it will fail (its failure rate) is 1- . 90 = . 10/10%. This means that the item will fail once in every 10 trials. N ormal operating conditions: the set of conditions under which an item"s reliability is specified. Reliability is used in two ways: instantaneous reliability: the probability that the product or system will function when activated. Focuses on one point in time, often used when an item must operate for one or a few number of times: continuous reliability: the probability that the product or system will function for a given length of time. Probability rules: used to determine whether a given product will operate successfully.
