Issue 50

A. Salmi et alii, Frattura ed Integrità Strutturale, 50 (2019) 231-241; DOI: 10.3221/IGF-ESIS.50.19 231 Crack growth study under thermo-mechanical loads: parametric analysis for 2024 T3 aluminum alloy Salmi Abdallah, Elajrami Mohamed University of Djillali Liabès of Sidi Bel-Abbes, Algeria salmiabdallah08@gmail.com, https://orcid.org/0000-0001-8352-8801 eladjrami_mohamed@yahoo.fr Mohamed El-Amine Slimani University of Science and Technology Houari Boumediene, Bab-Ezzouar, 16111 Algiers, Algeria mslimani@usthb.dz, https://orcid.org/0000-0002-8725-4892 A BSTRACT . Due to their severe operating conditions, many industrial components are subjected to complex combinations of cyclic mechanical stresses and thermal pressures. These combinations are responsible for the initiation and propagation of fatigue cracks in these parts, which can lead to failure. Thus, the study of the fatigue strength of these parts in such conditions becomes essential because it allows us to predict the life and safety of components. This study examines the influence of the load ratio and temperature on the propagation rate of long cracks on the outer surface. The propagation of a fatigue crack in ABAQUS was therefore automatically simulated using an identified Paris law of 2024 T3 aluminum alloy. Therefore, the study of these components' fatigue resistance in such conditions becomes essential to predict the service life and safety of the components. K EYWORDS . 2024 T3 aluminum alloy; Crack growth; Temperature; Finite elements; Thermo-mechanical fatigue. Citation: Salmi, A., Elajrami, M., Slimani, M. E.A., Crack Growth Study Under Thermo- mechanical Loads: Parametric analysis for 2024 T3 aluminum alloy, Frattura ed Integrità Strutturale, 50 (2019) 231-241. Received: 07.06.2019 Accepted: 16.08.2019 Published: 01.10.2019 Copyright: © 2019 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. I NTRODUCTION o determine whether a crack is present in an equipment under thermo-mechanical loads, it is necessary, for obvious safety reasons, to identify accurately its harmfulness degree. When this crack spreads, under thermo-mechanical loads, it is important to quickly assess the evolution of this harmfulness degree and more concretely the residual life of the cracked structure. T