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Article

Monitoring Strategic Hydraulic Infrastructures by Brillouin Distributed Fiber Optic Sensors

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Civil and Environmental Engineering Department, Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy
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Fondazione Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy
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Cohaerentia S.r.l, Via Pinturicchio 5, 20131 Milano, Italy
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CVA S.p.A., Via Stazione 31, 11024 Chatillon, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Alistair Borthwick and Giuseppe Pezzinga
Water 2022, 14(2), 188; https://doi.org/10.3390/w14020188
Received: 11 November 2021 / Revised: 9 December 2021 / Accepted: 30 December 2021 / Published: 10 January 2022
(This article belongs to the Special Issue New Paradigms in Flood Hazard and Risk Management)
We present a case study of a Structural Health Monitoring (SHM) hybrid system based on Brillouin Distributed Fiber Optic Sensors (D-FOS), Vibrating Wire (VW) extensometers and temperature probes for an existing historical water penstock bridge positioned in a mountain valley in Valle d’Aosta Region, Northwestern Italy. We assessed Brillouin D-FOS performances for this kind of infrastructure, characterized by a complex structural layout and located in a harsh environment. A comparison with the more traditional strain monitoring technology offered by VW strain gauges was performed. The D-FOS strain cable has been bonded to the concrete members using a polyurethane-base adhesive, ensuring a rigid strain transfer. The raw data from all sensors are interpolated on a unique general timestamp with hourly resolution. Strain data from D-FOS and VW strain gauges are then corrected from temperature effects and compared. Considering the inherent differences between the two monitoring technologies, results show a good overall matching between strain time series collected by D-FOS and VW sensors. Brillouin D-FOS proves to be a good solution in terms of performance and economic investment for SHM systems on complex infrastructures such as hydropower plants, which involve extensive geometry combined with the need for detailed and continuous strain monitoring. View Full-Text
Keywords: structural health monitoring; hydraulic infrastructures; smart structures; flood risk management; non-structural risk prevention measures; Brillouin fiber optic distributed sensors; vibrating wire extensometers; strain monitoring; comparing sensing technologies structural health monitoring; hydraulic infrastructures; smart structures; flood risk management; non-structural risk prevention measures; Brillouin fiber optic distributed sensors; vibrating wire extensometers; strain monitoring; comparing sensing technologies
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MDPI and ACS Style

Bertulessi, M.; Bignami, D.F.; Boschini, I.; Brunero, M.; Ferrario, M.; Menduni, G.; Morosi, J.; Paganone, E.J.; Zambrini, F. Monitoring Strategic Hydraulic Infrastructures by Brillouin Distributed Fiber Optic Sensors. Water 2022, 14, 188. https://doi.org/10.3390/w14020188

AMA Style

Bertulessi M, Bignami DF, Boschini I, Brunero M, Ferrario M, Menduni G, Morosi J, Paganone EJ, Zambrini F. Monitoring Strategic Hydraulic Infrastructures by Brillouin Distributed Fiber Optic Sensors. Water. 2022; 14(2):188. https://doi.org/10.3390/w14020188

Chicago/Turabian Style

Bertulessi, Manuel, Daniele F. Bignami, Ilaria Boschini, Marco Brunero, Maddalena Ferrario, Giovanni Menduni, Jacopo Morosi, Egon J. Paganone, and Federica Zambrini. 2022. "Monitoring Strategic Hydraulic Infrastructures by Brillouin Distributed Fiber Optic Sensors" Water 14, no. 2: 188. https://doi.org/10.3390/w14020188

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