Fatigue limit

TL;DR: In this article, a fatigue test program of a series of small-scale steel beams bonded with a carbon fiber reinforced polymer (CFRP) plate was used to detect crack initiation and monitor crack growth.

TL;DR: In this article, a review of available fatigue crack propagation models, both for constant and variable amplitude loadings, was conducted to identify their advantages and limitations, focusing on models that were simple to evaluate and required few (if any) empirical curve-fitting parameters.

TL;DR: In this article, the cyclic deformation induced an abnormal grain coarsening that initiated from the subsurface layer and grew along 45° to the stress axis toward the top surface layer, where the fatigue cracks were formed.

TL;DR: The structural stress approach, which considers the stress increase due to the structural configuration, allows the fatigue strength assessment of welded ship structures with various geometries on the basis of an S-N curve depending only on the type of weld as mentioned in this paper.