PSI - Issue 64

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2023) 000 – 000 Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com

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Procedia Structural Integrity 64 (2024) 89–96

SMAR 2024 – 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures Development and Validation of a Creep Frame Adapted for ELS (End Load Split) Test Arij Fawaz a,b, *, Emilie Lepretre a , Xavier Chapeleau b , Sylvain Chataigner a a MAST/SMC, Université Gustave Eiffel, Bouguenais 44344, France b COSYS/SII-I4S, Université Gustave Eiffel, Inria, Bouguenais 44344, France In industry, structural bonding can play an important role in repairing and reinforcing metallic structures. One reliable method is to use fracture mechanics tests that allow the determination of fracture toughness in mode I, mode II or mixed-mode. Such strategy can be used during the analysis of the initial design, but also through the aging study. Few studies were conducted to inspect the effect of applied load on the mechanical behavior of bonded joints. To fulfill this target, it is important to develop and validate experimental methodologies able to maintain constant loads during samples ’ ageing. In addition, these samples need to be amenable to subsequent fracture mechanics testing. In this study, only mode II is considered by using the End Load Split (ELS) test. An adaptation of the sample ’ s geometry is required to allow the combination of both ELS and creep configurations. This paper aims to present this adaptation as well as the developed creep frame. The new sample configuration is compared to a traditional sample geometry, revealing both similarities and differences. An optical fiber is employed to monitor crack propagation, thereby enhancing this comparison. © 2024 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 SMAR 2024 Organizers Keywords: Adhesively bonded joints; ELS test; Creep frame; Experimental validation. a,b, a a a MAST/SMC, Université Gustave Eiffel, Bouguenais 44344, France b COSYS/SII-I4S, Université Gustave Eiffel, Inria, Bouguenais 44344, France Abstract In industry, structural bonding can play an important role in repairing and reinforcing metallic structures. One reliable method is to use fracture mechanics tests that allow the determination of fracture toughness in mode I, mode II or mixed-mode. Such strategy can be used during the analysis of the initial design, but also through the aging study. Few studies were conducted to inspect the effect of applied load on the mechanical behavior of bonded joints. To fulfill this target, it is important to develop and validate experimental methodologies able to maintain constant loads during ’ ageing. In addition, these samples need to be amenable to subsequent fracture mechanics testing. In this study, only mode II is considered by using the End Load Split (ELS) test. An adaptation of the sample ’ s geometry is required to allow the combination of both ELS and creep configurations. This paper aims to present this adaptation as well as the developed creep frame. The new sample configuration is compared to a traditional sample geometry, revealing both similarities and differences. An optical fiber is employed to monitor crack propagation, thereby enhancing this comparison. © 2024 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 SMAR 2024 Organizers Keywords: Adhesively bonded joints; ELS test; Creep frame; Experimental validation. © 2024 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 SMAR 2024 Organizers Abstract

* Corresponding author. Tel.: 02.40.84.5657. E-mail address: arij.fawaz@univ-eiffel.fr * Corresponding author. Tel.: 02.40.84.5657. E-mail address: arij.fawaz@univ-eiffel.fr

2452-3216 © 2024 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 SMAR 2024 Organizers 2452-3216 © 2024 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 SMAR 2024 Organizers

2452-3216 © 2024 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 SMAR 2024 Organizers 10.1016/j.prostr.2024.09.216