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28 August 2019 Deflection monitoring method for two-dimensional structure based on fiber Bragg grating sensors measurements
Pasquale Di Palma, Giovanna Palumbo, Massimo Della Pietra, Vincenzo Canale, Mariagrazia Alviggi, Agostino Iadicicco, Stefania Campopiano
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Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111990K (2019) https://doi.org/10.1117/12.2541009
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus
Abstract
In this paper, we propose a method that allows to estimate the vertical displacement of a two-dimensional structure by means of strain measurements. Fifteen fiber Bragg gratings (FBGs) 10 mm long have been selected as strain sensors and embedded in a rectangular multilayer panel in order to test the proposed method. Only few optical fibers have been employed avoiding the complex wiring typical of the electrical sensors. The deflection tests have been carried out loading the panel in different configurations. Once the deflection maps were obtained, the values in the center were compared with the displacements directly measured by means of a mechanical comparator finding a very good agreement.
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Pasquale Di Palma, Giovanna Palumbo, Massimo Della Pietra, Vincenzo Canale, Mariagrazia Alviggi, Agostino Iadicicco, and Stefania Campopiano "Deflection monitoring method for two-dimensional structure based on fiber Bragg grating sensors measurements", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111990K (28 August 2019); https://doi.org/10.1117/12.2541009
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KEYWORDS
Fiber Bragg gratings
Sensors
Optical fibers
Structural monitoring
Light wave propagation
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