Fatigue Notch Factor Calculator

Calculate fatigue stress concentration factor (Kf) from geometric Kt using Peterson's notch sensitivity approach.

Geometric stress concentration factor from charts.
Root radius of the notch or fillet.
mm
Material UTS. Used to estimate notch sensitivity.
MPa

Results

Notch Sensitivity q-
Fatigue Notch Factor Kf-
Neuber Constant a-mm
References: Peterson's Stress Concentration Factors; Shigley's Ch. 6 — Fatigue