Title:Fatigue of Notched Standard Specimens - The Influence of the Stress Gradient on the S-N Curve in AL2024Author(s):Stefan Sieberer, Johannes Homan, Martin SchagerlAbstract:The fatigue life of three designs of notched aluminium specimens with nominally similar stress concentration factor K t is compared by experimental testing. A dependency of the fatigue life on the stress gradient is shown. By comparison to unnotched specimens, the fatigue stress concentration factor K t,f can be obtained by applying a correction factor to the nominal K t . Usual correction factors underestimate the effect by a large extent and should be re-evaluated to utilise the full potential of the material.Booktitle:ICAS PROCEEDINGS of the 33th Congress of the International Council of the Aeronautical SciencesPage Reference:11 page(s)Publishing:2022