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Max RPN
—
Average RPN
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RPN > 100 Count
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RPN > 200 Count
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Total Risk Reduction
FMEA Table
0
(0 = show all)
| # | Part / Function | Failure Mode | Effect | Cause | S | O | D | RPN | Countermeasure | S' | O' | D' | RPN' | Red.% |
|---|
RPN Pareto Chart
Before/After RPN Comparison
Theory
$\text{RPN} = S \times O \times D \quad (\text{max } 1000)$
Severity S: 1 (no effect) – 10 (hazardous without warning) Occurrence O: 1 (extremely rare) – 10 (almost certain)
Detection D: 1 (always detected) – 10 (undetectable)
Risk reduction rate: $\dfrac{\text{RPN} - \text{RPN}'}{\text{RPN}} \times 100\%$
CAE Integration: Set O and S scores from FEM stress analysis results / Compare RPN before and after structural optimization / Complementary use with FTA (FMEA: bottom-up, FTA: top-down) / Preliminary analysis for ISO 26262 and IEC 61508 functional safety.