Abstract
Mode and Effects Analysis (FMEA) is a methodology that has been used in most industries for many years. Typically, the Design FMEAs are developed early in the product development cycle, in conjunction with the product risk analysis, product architecture and product requirements. Robust Design FMEA, the subject of this paper, is an enhancement to the currently in use Design FMEA by anticipating safety and reliability failure modes through the use of a Parameter Diagram (P-Diagram). The Design FMEAs have gone through a metamorphosis of sorts in the last decade, as a focus on severity and occurrence has replaced Risk Priority Number- (RPN-) driven activities. In large part this is due to the measurement of risk outcomes, resulting from associated RPNs being misinterpreted. As so many practitioners of the Design FMEA believe that the RPN is the most important outcome. However, the Design FMEA methodology must consider taking actions as soon as it is practical.
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