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Quantifying the Failure Rate Adder Associated with Non-robust Designs

IP.com Disclosure Number: IPCOM000109917D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-24
Document File: 1 page(s) / 30K

Publishing Venue

IBM

Related People

Sumrell, CC: AUTHOR

Abstract

Disclosed is a method whereby engineers can adjust the reliability projections of a product allowing for non-robust designs. By analyzing a product beyond its normal operating limits and statistically projecting the probability of failure within that specification a failure rate for marginal designs can be derived.

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Quantifying the Failure Rate Adder Associated with Non-robust Designs

      Disclosed is a method whereby engineers can adjust the
reliability projections of a product allowing for non-robust designs.
By analyzing a product beyond its normal operating limits and
statistically projecting the probability of failure within that
specification a failure rate for marginal designs can be derived.

      The statistically projected probability of failure, which is
represented by the "X"s within the operating limits, can be used to
adjust the estimated field support costs before the product is
shipped.  If the additional costs are unacceptable the designer has
the information to justify a change to the existing design or select
an alternate design.

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      This method can also be used to evaluate the functional
performance of two designs or products to determine which product
impacts the "cost of service" the least.

      Disclosed anonymously.