PSI - Issue 68

ScienceDirect Structural Integrity Procedia 00 (2025) 000–000 Structural Integrity Procedia 00 (2025) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 68 (2025) 894–900

European Conference on Fracture 2024 Numerical Simulation of Corrosion Attack on Al-Cu-Li 2198 Alloy in Different Ageing Tempers Louka Eleftheria-Sotiria a , Paraskevas Papanikos a , Christina Margarita Charalampidou b , Nikolaos D. Alexopoulos b,* a Department of Product and Systems Design Engineering, University of the Aegean, Syros, Greece b Research Unit of Advanced Materials, Department of Financial Engineering, University of the Aegean, Chios, Greece Abstract A comprehensive experimental and numerical study was conducted on the effect of corrosion attack on the mechanical behaviour of AA2198 for two different ageing tempers, namely T3 and T8, respectively. The experimental investigation included pre exposure to exfoliation corrosion environment, depth-of-attack measurements and finally tensile testing for different investigated corrosion exposure times. Corrosion attack was modelled, both as pitting distribution on the damaged surface and as pitting depth as surface notches of AA2198 and for different ageing tempers (T3 and T8) to investigate the effect of ageing on the corrosion induced tensile properties degradation mechanism. A three-dimensional parametric finite element model was developed to take as an input the size and shape of the corrosion products using ANSYS software. The randomness of size and shape of corroded products was also considered. The evolution of damage during tensile loading is predicted using a progressive damage modelling scheme. The model can assess the residual tensile mechanical properties of corroded structures and provide useful information concerning the mechanics of damage evolution from the deteriorated surface. © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) European Conference on Fracture 2024 Numerical Simulation of Corrosion Attack on Al-Cu-Li 2198 Alloy in Different Ageing Tempers Louka Eleftheria-Sotiria a , Paraskevas Papanikos a , Christina Margarita Charalampidou b , Nikolaos D. Alexopoulos b,* a Department of Product and Systems Design Engineering, University of the Aegean, Syros, Greece b Research Unit of Advanced Materials, Department of Financial Engineering, University of the Aegean, Chios, Greece Abstract A comprehensive experimental and numerical study was conducted on the effect of corrosion attack on the mechanical behaviour of AA2198 for two different ageing tempers, namely T3 and T8, respectively. The experimental investigation included pre exposure to exfoliation corrosion environment, depth-of-attack measurements and finally tensile testing for different investigated corrosion exposure times. Corrosion attack was modelled, both as pitting distribution on the damaged surface and as pitting depth as surface notches of AA2198 and for different ageing tempers (T3 and T8) to investigate the effect of ageing on the corrosion induced tensile properties degradation mechanism. A three-dimensional parametric finite element model was developed to take as an input the size and shape of the corrosion products using ANSYS software. The randomness of size and shape of corroded products was also considered. The evolution of damage during tensile loading is predicted using a progressive damage modelling scheme. The model can assess the residual tensile mechanical properties of corroded structures and provide useful information concerning the mechanics of damage evolution from the deteriorated surface. © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ECF24 organizers Keywords: Al-Li alloys; corrosion; finite element simulation © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ECF24 organizers

Peer-review under responsibility of ECF24 organizers Keywords: Al-Li alloys; corrosion; finite element simulation

* Corresponding author. Tel.: +302271035464; fax: +302271035484. E-mail address: nalexop@aegean.gr * Corresponding author. Tel.: +302271035464; fax: +302271035484. E-mail address: nalexop@aegean.gr

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ECF24 organizers 2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ECF24 organizers

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ECF24 organizers 10.1016/j.prostr.2025.06.147