Monotonic and low cycle fatigue behaviour of 2024-T3 aluminium alloy between room temperature and 300 °c for designing VAWT components

Abstract

In the present study, the results of the monotonic tension tests and low cycle fatigue tests performed on aluminium alloy EN AW-2024-T3 under various operating temperatures are presented in order to assess the fatigue behaviour of the aluminium alloy under evaluated temperatures. Monotonic tests were performed to determine the influence of temperature on mechanical properties of the material. The aim of cyclic tests was to acquire the parameters required for Manson-Coffin equation in order to plot strain-fatigue life curves. Moreover, stress-strain behaviour of the alloy and the cyclic hardening behaviour were evaluated using Ramberg-Osgood equation. Finally, PSWT-damage parameters for each temperature have been calculated for further investigation of the effects of the temperature on fatigue life using acquired data while taking the account of mean stress effect into calculations. Variations in the experimental data due to various test temperatures are presented for both monotonic and cyclic tests. © 2015 Wiley Publishing Ltd.