dfmea-design

# 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) - [ ] All Failure Causes validated using engineering analysis (FEA, calculation) or test evidence — not assumptions - [ ] S/O/D ratings justified using analysis, test data, or design history - [ ] All H-AP items have a defined action, named owner, and target date - [ ] DFMEA → DVP, PFMEA, and drawing linkage verified before release to manufacturing --- ## When to use - New product development (integrate into APQP Phase 2 — Product Design and Development) - Design change or engineering change request (ECR) - Field failure investigation revealing a design root cause - Periodic design review - Before handoff to manufacturing (DFMEA drives the PFMEA) **Key diff...