Page 240 - Design for Six Sigma a Roadmap for Product Development
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cost (index)
Output Error States
Vulnerability
cost factor
Dissatisfaction
cost factor
Action Results Actions Taken Repair Frequency Design Parameters … ... System Noise Factors … … …
Recom- mended actions
Current Design Control cost (index) Input
Determine the priority of failure modes to attract Second Level Functional Decomposition DP 11 1 0 0 DP 12 1 1 0 = DP 13 1 0 1
Vulnerability
cost factor
Dissatisfaction
cost factor
Repair
Frequency
Potential Causes What are the causes? -interact. between DPs -Parameters of DPs -Noises Subsystem DP1 FR 11 FR 12 FR 13
Potential Effects What are the effects on higher level functions? DP 1 DP 2 DP 3 FMEA and transfer function.
System: Subsystem DP1 Failure Modes Function What are What could the go wrong? functions? -No func. -Partial func. -Degr. func. -unintend. func. System High Level Functional Decomposition 1 0 1 FR 1 FR 2 0 1 1 = 1 0 1 FR 3 Figure 6.15
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