AIEngineeringTool — Smarter Tools. Brighter Builds.

Shaft Fatigue

Estimate a torsional Goodman fatigue safety factor for a shaft.

Ultimate shear strength: 300 MPa
Live concept view — geometry scales with the entered design condition.

Design inputs

Enter known values using the units shown. Results and the live SVG view update immediately.

PRELIMINARY RESULT

Torsional fatigue safety factor2.40

Calculation detail

Formula: 1/n = τa / Se + τm / Su

A linear Goodman-style torsional fatigue relation combines alternating and mean shear stress.