Fatigue of Notched Standard Specimens - The Influence of the Stress Gradient on the S-N Curve in AL2024
Sprache des Vortragstitels:
33rd Congress of the International Council of the Aeronautical Sciences
Sprache des Tagungstitel:
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.