Index · by discipline
Disciplines
Every skill sits in one discipline, the way a real engineering org splits the work.
FEFEA3 sheets
- Bolted joint sizingSizes and verifies a bolted joint end to end: preload, stiffness ratio, separation and slip margins, fatigue on the alternating share, and a torque spec with the friction assumption written down.
- FEA sanity checkAudits a simulation before anyone trusts it: reaction balance, hand-calc cross-check, singularity screen, convergence, and whether the reported stress is even the right quantity for the criterion.
- Hand calc checkProduces a documented first-principles calc sheet for beams, shafts, buckling, pressure, fits, springs, and bearings: assumptions numbered, units carried, margin reported against a named criterion.
GDGD&T2 sheets
- Tolerance stack-upBuilds a worst-case and statistical stack-up along a defined loop, ranks contributors by share of total variation, and tells you which two tolerances to tighten or which can be opened for cost.
- GD&T callout reviewReviews a drawing's geometric tolerancing for legality and intent: datum precedence, degrees of freedom actually constrained, redundant or missing controls, and whether the callout can be inspected.
QAQuality2 sheets
- DFMEA builderFacilitates a Design FMEA that teams actually use: function decomposition, physics-of-failure brainstorming, honest severity and occurrence scoring, and verifiable actions in RPN or AIAG-VDA format.
- Root cause and 8DDrives a disciplined failure investigation: is/is-not problem definition, mechanism-first causal analysis, verified root cause with evidence, and a complete 8D covering technical, escape, and systemic causes.