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Article

NSHT: New Smart Hybrid Transducer for Structural and Geotechnical Applications

1
Department of Engineering Università degli Studi della Campania “Luigi Vanvitelli” Via Roma 29, 81031 Aversa (CE), Italy
2
HPSYSTEM srl, Via Papini n.12, 80024 San Giorgio a Cremano (NA), Italy
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(13), 4498; https://doi.org/10.3390/app10134498
Received: 4 June 2020 / Revised: 23 June 2020 / Accepted: 25 June 2020 / Published: 29 June 2020
(This article belongs to the Special Issue Computational and Experimental Assessment in Structural Engineering)
This work describes the application of a new transducer prototype for continuous monitoring in both the structural and geotechnical fields. The transducer is synthetically constituted by a wire of optical fiber embedded between two fiber tapes (fiberglass or carbon fiber) and glued by a matrix of polyester resin. The fiber optical wire ends have been connected to a control unit whose detection system is based on Brillouin optical time-domain frequency analysis. Three laboratory tests were carried out to evaluate the sensor’s reliability and accuracy. In each experiment, the transducer was applied to a sample of inclinometer casing sets in different configurations and with different constraint conditions. The experimental collected data were compared with theoretical models and with data obtained from the use of different measuring instruments to perform validation and calibration of the transducer at the same time. Several diagrams can compare the transducer and highlight its suitability for the monitoring and maintenance of structures. The characteristic of the transducer suggests its use as a mixed system for reinforcing and monitoring, especially in the lifetime maintenance of critical infrastructures such as transportation and service networks, and historical heritage. View Full-Text
Keywords: structural safety assessment; experimental monitoring; strain transducers; reinforcement; civil engineering; optical fiber sensors; lifetime structural monitoring; Brillouin structural safety assessment; experimental monitoring; strain transducers; reinforcement; civil engineering; optical fiber sensors; lifetime structural monitoring; Brillouin
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MDPI and ACS Style

Minutolo, V.; Cerri, E.; Coscetta, A.; Damiano, E.; De Cristofaro, M.; Di Gennaro, L.; Esposito, L.; Ferla, P.; Mirabile, M.; Olivares, L.; Zona, R. NSHT: New Smart Hybrid Transducer for Structural and Geotechnical Applications. Appl. Sci. 2020, 10, 4498. https://doi.org/10.3390/app10134498

AMA Style

Minutolo V, Cerri E, Coscetta A, Damiano E, De Cristofaro M, Di Gennaro L, Esposito L, Ferla P, Mirabile M, Olivares L, Zona R. NSHT: New Smart Hybrid Transducer for Structural and Geotechnical Applications. Applied Sciences. 2020; 10(13):4498. https://doi.org/10.3390/app10134498

Chicago/Turabian Style

Minutolo, Vincenzo; Cerri, Enis; Coscetta, Agnese; Damiano, Emilia; De Cristofaro, Martina; Di Gennaro, Luciana; Esposito, Luca; Ferla, Paolo; Mirabile, Maurizio; Olivares, Lucio; Zona, Renato. 2020. "NSHT: New Smart Hybrid Transducer for Structural and Geotechnical Applications" Appl. Sci. 10, no. 13: 4498. https://doi.org/10.3390/app10134498

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