FREE STUDY · 7 MIN LESSON
DFSS Road Maps & FMEA
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Design Roads & Risk Numbers
Check this point against current official guidance before relying on it.
- Two design road maps: DMADV and IDOV — for what doesn't exist yet.
- One risk number: RPN = Severity × Occurrence × Detection.
- Both topics are included in the body of knowledge.
DMAIC vs DMADV vs IDOV
Check this point against current official guidance before relying on it.
- DMAIC: define, measure, analyze, IMPROVE, CONTROL — existing processes.
- DMADV: define, measure, analyze, DESIGN, VERIFY — new ones.
- IDOV: identify, design, optimize, verify.
RPN, Worked
Check this point against current official guidance before relying on it.
- Severity 7, Occurrence 4, Detection 5.
- RPN = 7 × 4 × 5 = 140. Range: 1 to 1,000.
- High Detection score = HARDER to detect = worse.
Quick Self-Check
Check this point against current official guidance before relying on it.
- In your head:
- S=8, O=5, D=6 — compute the RPN.
- And which road map ends in design-verify?