Abstract
The aim of this study was deterministic and probabilistic analysis of fatigue life of the austenitic steel (1.4541) applied on industrial pipeline. Semi-elliptical cracks in 1.4541 steel were considered during studies and probabilistic analysis. Increases in the sizes of semi-elliptical cracks were determined experimentally and analytically for specimens made of 1.4541 steel used for the new structure of pipeline and 1.4541 steel after many years of operation. Crack propagation models of a semi-elliptical crack were developed for the purpose of describing crack length propagation in a case of random loading. Correctness of the proposed models was checked on the basis of the experimental results. Fatigue tests were performed in accordance with the block program of stresses.
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