Andrade Safe — Four independent fatigue teaching models

All exercise values are synthetic. They are not commercial material data or component approval.
Open simulador-fadiga.html locally; choose PT/EN/ES and a module. No external scripts are needed.
Run with Python 3: python modelo-fadiga.py

Basquin uses cycles, not reversals, and warns about extrapolation beyond 200–300 MPa.
Goodman uses tensile or zero mean stress. Its nominal 1/U describes proportional scaling only.
Miner uses pre-counted, fully reversed blocks. 1 − D is not exact remaining life.
Paris uses Y = 1.12, m = 3 and C = 2e-11 m/cycle/(MPa√m)^3. Crack lengths are converted from mm to m.
The final length must exceed the initial length. It is not a critical crack size or inspection criterion.

Photographic licenses, use conditions and required attribution: photo-credits.md and photo-provenance.json.
Original technical diagrams are separate from the licensed photographs.
Editorial date: 12 October 2026. Sources checked 13 October UTC / 12 October BRT.
