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dfmea-design
Build a design risk analysis, DFMEA worksheet, or interface analysis using the AIAG-VDA FMEA Handbook 2019. Covers design intent, interface failures, boundary diagram, and design robustness before manufacturing. Use during new product development, design changes, or when a field failure reveals a design weakness. Required for IATF 16949 §8.3 scope.
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# Design FMEA (DFMEA) — AIAG-VDA 2019
## Goal
Identify and mitigate design risks by analysing functions, interfaces, and failure modes — so that design weaknesses are resolved before release to manufacturing, and the results feed directly into the DVP, PFMEA, and Control Plan.
## Required Execution Checklist
- [ ] DFMEA scope defined: boundary diagram complete, inside/outside boundary identified
- [ ] Product hierarchy mapped: system → subsystem → component → interface (Step 2)
- [ ] All interfaces identified — internal (component-to-component), external (environment), and user/assembly
- [ ] All functions defined with Verb + Noun + Measurable Standard (Step 3)
- [ ] Each function has a measurable verification method confirmed in the DVP
- [ ] Failure chain complete: Effect → Mode → Cause for each function (Step 4)