Value of Design FMEA

Abstract

Carl and Fred discuss an interesting question from a listener about modeling the money value of Design FMEAs.

Key Points

Join Carl and Fred as they discuss whether it is possible to predict the cost savings due to design changes driven by Design FMEA.

Topics include:

• The challenge of predicting warranty costs from FMEA, including pros and cons.
• How FMEA interacts with Model-based Engineering.
• Model-based FMEA
• Can FMEA be used to predict failure rates?
• Three categories of failure: from parts of the system that  are not changing, from known failures, and from parts of the system that have changes to environment or design.
• What are limitations to estimating warranty cost using occurrence ratings in Design FMEA?
• FMEAs are not done on all parts of the system.
• The purpose of Design FMEA is not to predict field failures. The purpose of Design FMEA is to improve the design.
• The occurrence rating in an FMEA is not designed to predict a failure rate. The purpose of the occurrence rating is to help prioritize risk for corrective actions. It is a subjective rating.
• FMEA should not be used to calculate reliability.
• Many good comments from listener were reviewed and discussed.
• Models can be useful, if assumptions are understood and taken into account.
• The language of business is money.
• FMEA can be input to reliability analysis, and system reliability models.
• FMMEA: Failure Mode, Mechanism and Effects Analysis.

Enjoy an episode of Speaking of Reliability. Where you can join friends as they discuss reliability topics. Join us as we discuss topics ranging from design for reliability techniques to field data analysis approaches.

SOR 950 Value of Design FMEACarl S. Carlson

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Show Notes