Design FMEA (DFMEA) Software

A DFMEA analyses how a product, component or subsystem can fail to deliver its intended function. The analysis must drive verification and validation — not document them after the fact. See PFMEA vs DFMEA for the boundary with the process side.

Most teams start with a spreadsheet template inherited from a previous project. It looks workable for one FMEA, then breaks the moment the team grows or a customer audit is announced. The failure pattern is always the same.

• Version control. "FMEA_final_v3_rev_after_meeting.xlsx" is not an audit trail. There is no reliable way to answer "what did we approve and when".
• Audit traceability. Reviewers cannot see who changed a rating or why. Inputs, controls and decisions are scattered across emails and chats.
• AP calculation mistakes. The AIAG-VDA Action Priority table is not a single formula — most templates fall back to RPN or implement AP partially. A 10-2-2 safety failure ends up as "Low" because the spreadsheet only multiplies.
• Collaboration. Two reviewers cannot edit the same matrix at the same time without overwriting each other. Cross-functional sessions degrade into screen-share marathons.
• Consistency. Severity scales drift between projects. Detection ratings inflate because no one defines what "automated" actually means.

See common FMEA mistakes for the engineering side of the same problem.

1. Inputs. Upload your process flow, drawings or a previous FMEA. Qhubio extracts steps, functions and known controls.
2. AI-assisted draft. The system proposes failure modes, effects and causes as a structured matrix — never as free-form prose.
3. Engineering moderation. The team reviews each row, adjusts wording, removes false positives, and confirms the controls actually in place.
4. Deterministic AP. Severity, Occurrence and Detection are rated once; Action Priority is calculated by the backend using AIAG-VDA 2019 rules. The math is never up to the spreadsheet.
5. Approval. Reviewer and approver sign off; the version is frozen and stored with input and output snapshots.
6. Export. One-click Excel and PDF for the customer file, the audit binder, or the Control Plan handoff.

• Function-first structure. Failure modes are written against requirements, not part names.
• Design controls. Prevention (DV plans, simulations) and Detection (DV tests, audits) modelled cleanly.
• Action Priority engine. Severity dominates — a Sev-10 failure cannot be filtered out by low occurrence.
• Versioning. Every revision stored with its inputs and outputs.
• Customer-ready exports. PDF and Excel formatted for engineering reviews and audits.

• Electronics manufacturing: Solder, AOI and ICT controls written as detection-by-design, not as inspection-only.
• Medical devices: Risk file alignment between FMEA and ISO 14971 hazard analysis.
• Design engineering: DFMEAs that drive verification & validation, not paperwork.

A DFMEA is only useful if it changes verification and validation. Qhubio surfaces every failure mode that depends on a Detection control and lets the team mark which DV/PV activity addresses it — so the DFMEA and the test plan stay in sync instead of drifting apart over the program.

• Concept phase. Start the DFMEA against requirements and functions; failure modes seed the test plan.
• Design phase. Refine controls as DV tests are defined; the AP score drives which tests get budgeted.
• Verification phase. Close out detection controls as DV reports land; reopen rows where evidence is missing.
• Handoff to PFMEA. Special characteristics flagged in the DFMEA carry into the PFMEA. See PFMEA vs DFMEA.

• AIAG-VDA 7-step process — the methodology applied end-to-end.
• Action Priority guide — how the AP decision actually works.
• Severity, Occurrence and Detection rating guides.
• FMEA → Control Plan linkage — what flows downstream.
• PFMEA CNC example and more worked examples.
• Audit readiness checklist.