Block diagrams model the elements of product design, indicating the flows of inputs, functions, and outputs involved. The Design FMEA addresses the design intent and assumes that the design will be manufactured or assembled accordingly. The Design FMEA does not rely on process controls to overcome potential design weaknesses but takes into consideration technical and physical limitations of manufacturing and assembly processes. Process FMEAs are based on manufacturing or assembly processes used to make the product. Process flow diagrams illustrate the flows of the manufacturing and assembly processes, the inspection points, and the processes for handling non-conforming material.
Risk assessment is used to determine high risk parts of the process.
The Process FMEA assumes that the product as designed will meet the design intent. Rankings based on ordinary scales from one to ten are used. Back to the table of contents.