# Reliability

May 8th, 2015
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The Main topics of this chapter are 1. Quantifying Reliability 2. Role of Redundancy 3. Availability Reliability is a measure of the ability of a product, part, or system to perform its intended function under a prescribed set of conditions.

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MeowSUPPLEMENT TO CHAPTER 4ReliabilityTeaching NotesThe Main topics of this chapter are1. Quantifying Reliability2. Role of Redundancy3. AvailabilityReliability is a measure of the ability of a product, part, or system to perform its intended function under a prescribed set of conditions. Quantitative methods include the use of probabilities (addition, multiplication, complements) in determining reliability and the use of Exponential and Normal distributions in determining the mean time between failures (used in availability). Students seem to have some difficulty with Exponential distribution, especially if they have not had it in their statistics courses. The coverage of Exponential distribution can be omitted without loss of continuity. The Normal distribution should be included because it paves the way for later use of inventory management and quality control sampling theory.Answers to Discussion and Review Questions1.Reliability is a measure of the ability of a product or service to perform its intended function under a prescribed set of conditions, i.e. not failing.2.If a product is composed of a large number of parts, it can conceivably have a low reliabi

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