PSI - Issue 64

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

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 64 (2024) 604–611

SMAR 2024 – 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures Smart monitoring of RC T beams strengthened by external bonded FRP Andrea Armonico a , Emmanuel Ferrier a *, Laurent Michel a a Université Claude Bernard Lyon 1, Laboratoire LMC2 82 Bd niels Bohrs, 69622 Villeurbanne FRANCE Abstract This study aimed to investigate the cracking behaviour of RC beams strengthened by external smart bonded FRP. A smart CFRP consists of two textile fabrics inside which a distributed fibre-optic sensor (DFOS) is inserted. During the test, the sensor measured the mechanical strain distribution of the composite with a millimetric spatial resolution. Simultaneously crack openings along the beams were detected and measured using digital image correlation (DIC). The results of the strengthened beams were analyzed in comparison to the reference beam, and the crack width are compared. Subsequently a smart CFRP was described and implemented in the tested beams and was used to measure the cracks location. The measurement of strain profile allow then to obtain the level of beam damaged during the loading. © 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: Monotoring ; RC structures; CFRP Strengthening; DIC, Fiber Optic Sensors 1. Introduction Knowledge of the bending behaviour of reinforced concrete elements has always been a topic of interest in the civil engineering scientific community. In particular, with the advent of the various structural reinforcement systems, studies have been carried out to understand the impact of these technologies (i.e., CFRP) on structural elements' resistance and dissipative capacity (Nakamura et al., 1996; Rabinovitch and Frostig, 2003). In the first part of the © 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

* Corresponding author. Tel.: +33 4 72 69 21 30; fax: +33 4 78 94 69 06 E-mail address: emmanuel.ferrier@univ-lyon1.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 10.1016/j.prostr.2024.09.317