DRBFM vs FMEA: when change-point analysis beats a full FMEA re-rate after a design change, when it doesn't, and how the two methods feed each other.
System FMEA vs DFMEA: which level owns interaction failures, how the two feed each other, and when a separate system FMEA is worth it.
Step-by-step interface analysis for DFMEA: map physical, energy, and signal interactions to failure modes before scoring severity and occurrence.
Design FMEA vs process FMEA: scope, timing, and how DFMEA failure modes become PFMEA causes. AIAG-VDA linkage breakdown and APQP timing table.
Writing DFMEA failure modes correctly: verb-noun syntax, function-based framing, and the cause-mode-effect separation that audits actually test.
How boundary diagrams and P-diagrams define DFMEA scope. Construction steps, how they feed Step 2 and Step 3, and the failure modes most teams skip.