This paper presents a model for statistical analysis of crack growth under stationary,gaussian random loading processes including the loading sequence effect.The model defines and incorporates an equivalent closure stress,which is included into the fatigue crack growth law through the effective stress intensity factor.The equivalent closure stress for each loading process is obtained from the probability density function of peaks, p(S),the crack growth properties of the material,the specimen geometry and one of the existing analytical approaches to the closure stress produced by an overload.
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