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Right by Design
A Novel Approach to Failure Mode Avoidance
Product Reliability
Two different definitions of product reliability are in common usage.
Definition 1
Reliability is the probability that a product will perform its intended function for a specified period of time within a defined environment without failure.
This definition lends itself to a predictive approach to reliability and is useful in designing product that can be readily testing under the conditions in which it is expected to operate in customer usage.
Definition 2
Reliability is Failure Mode Avoidance.
Failure Mode Avoidance promotes an approach to product design based on improvement and is particularly useful in designing product which customers use in a wide variety of ways under significantly different conditions. This second definition is central to the book.
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