S-N Curve & Miner's Rule

Cumulative fatigue damage calculator using Goodman equivalent stress.

Ultimate Strength (S_ut) 800 MPa

Endurance Limit (S_e) 400 MPa

Stress Amp (σ_a1)

Mean Stress (σ_m1)

Applied Cycles (n1)

Stress Amp (σ_a2)

Mean Stress (σ_m2)

Applied Cycles (n2)

Block 1 Damage (D1):1.38e-1

Block 2 Damage (D2):4.26e-1

Total Damage (D):0.5638

SAFE FROM FATIGUE

■ Block 1▲ Block 2