Vibration Fatigue By Spectral | Methods Pdf |top|

Steinberg proposed a simplified approach assuming the stress amplitude follows a Gaussian distribution. It estimates damage at only three distinct stress levels (1σ, 2σ, and 3σ).

S(f) = lim (Δf → 0) [E [ (X(f, Δf))^2 ] / Δf ] vibration fatigue by spectral methods pdf

Where: