Variance of the fatigue damage in non-Gaussian stochastic processes with narrow-band power spectrum

This paper presents two theoretical models to assess the variance of fatigue damage in stationary narrow-band and non-Gaussian stochastic processes. The extend solutions existing literature restricted Gaussian new here developed exploit a non-linear transformation that links domains based on skewness kurtosis coefficients, which are used quantify deviation from distribution. Monte Carlo numerical simulations time-domain performed confirm correctness proposed models, investigate sensitivity skewness, kurtosis, inverse slope stress versus life (S-N) curve. An example is finally presented demonstrate increase failure probability due effects loading.