Abstract
The paper presents a first attempt to calculate fatigue life for random loading with single overloads with the use of the spectral method of fatigue life assessment. The proposed modification of the fatigue life assessment algorithm is based on the transformation of the power spectral density of the loading signal with the use of the correction factor using the information obtained from the spectral kurtosis. The procedure is explained and verified on the basis of comparison of calculation results with the results obtained with the rainflow cycle counting method. The same damage degree hypothesis is used in both cases, it is the well-known linear Palmgren-Miner model. The obtained results confirm that there is a need to perform a correction in terms of the influence of the overloading amplitudes in the spectral method of fatigue life assessment.
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