PSI - Issue 47

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 47 (2023) 826–841

27th International Conference on Fracture and Structural Integrity (IGF27) Numerical investigation on the hygrothermal durability of adhesives

used in civil engineering applications Francesco Ascione a *,, Luciano Feo a , Paolo Lonetti c a University of Salerno, Dept of Civil Engineering, Fisciano (SA) 84084, Italy c University of Calabria, Dept of Civil Engineering, Rende (CS) 87036, Italy

© 2023 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 the IGF27 chairpersons Abstract Applications in the field of civil engineering involving adhesives and pultruded materials are increasing due to their peculiar characteristics of lightness, ease of installation, high corrosion resistance and, last but not least, lower maintenance costs. If there are several studies regarding the durability of the composite material, current literature referring to adhesives is relatively poor. Within this framework, this paper aims to investigate, from a numerical point of view, the fracture energy in mode II and the conjugated interface law of two commercial epoxy resins taking into account the effects of absorption and desorption. © 2023 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 the IGF27 chairpersons Keywords: Hygrothermal durability; Epoxy adhesives; Fracture mechanics; Finite element analysis.

Nomenclature t

Thickness of the adherents b Width of the adherents � Length of the SLJ � pre ‐ crack in the adhesive layer pre ‐ crack in the adhesive layer measured for the notch to the support * Corresponding author. E-mail address: fascione@unisa.it

2452-3216 © 2023 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 the IGF27 chairpersons

2452-3216 © 2023 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 the IGF27 chairpersons 10.1016/j.prostr.2023.07.036