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Article

New Distributed Fibre Optic 3DSensor with Thermal Self-Compensation System: Design, Research and Field Proof Application Inside Geotechnical Structure

1
Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology in Krakow, Mickiewicza 30, 30-059 Krakow, Poland
2
Reinforced Concrete Structures Division, Faculty of Civil Engineering, Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland
3
Faculty of Civil Engineering, Silesian University of Technology, Akademicka 5, 44-100 Gliwice, Poland
4
SHM System Sp. z o.o. Sp. komandytowa., Libertów, ul. Jana Pawła II 82A, 30-444 Krakow, Poland
*
Author to whom correspondence should be addressed.
Academic Editors: Paulo Antunes, Jaroslaw Rybak, Marian Drusa and Andrea Segalini
Sensors 2021, 21(15), 5089; https://doi.org/10.3390/s21155089
Received: 31 May 2021 / Revised: 23 July 2021 / Accepted: 26 July 2021 / Published: 27 July 2021
(This article belongs to the Special Issue Sensors and Measurements in Geotechnical Engineering)
Thanks to the dynamic development of advanced building technologies as well as the growing awareness, experience and responsibilities of engineers, structural health monitoring systems (SHM) are increasingly applied in civil engineering and geotechnical applications. This is also facilitated by the construction law and standard requirements, e.g., the observation method for geotechnical structures described in the Eurocode 7. Still, the most common approach is to apply spot sensors in selected points of the structure to validate theoretical models, numerical simulations and support technical assessments by involving statistic and approximation methods. The main limitation of spot sensing is the inability to detect localized damages such as cracks, fractures, sinkholes or shear planes. Thus, such analysis is subject to considerable uncertainty, especially within geotechnical structures, characterized by random mechanical parameters that change with location, but also over time. Another approach is based on distributed fibre optic sensors (DFOS), which are finding a growing acceptance in laboratory and field projects, overcoming limitations of conventional measurements. The design and applications of new DFOS dedicated for 3D displacement sensing are described hereafter in the article. The novelty of the presented solution lies in several features, including design, application, production technology and materials. This article is focused on the operational rules governing DFOS and proving their effectiveness in laboratory and geotechnical field applications. View Full-Text
Keywords: distributed fibre optic sensing DFOS; composite; 3DSensor; displacements; settlements; in situ measurements; thermal compensation; embankment; geotechnics; laboratory distributed fibre optic sensing DFOS; composite; 3DSensor; displacements; settlements; in situ measurements; thermal compensation; embankment; geotechnics; laboratory
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MDPI and ACS Style

Bednarski, Ł.; Sieńko, R.; Grygierek, M.; Howiacki, T. New Distributed Fibre Optic 3DSensor with Thermal Self-Compensation System: Design, Research and Field Proof Application Inside Geotechnical Structure. Sensors 2021, 21, 5089. https://doi.org/10.3390/s21155089

AMA Style

Bednarski Ł, Sieńko R, Grygierek M, Howiacki T. New Distributed Fibre Optic 3DSensor with Thermal Self-Compensation System: Design, Research and Field Proof Application Inside Geotechnical Structure. Sensors. 2021; 21(15):5089. https://doi.org/10.3390/s21155089

Chicago/Turabian Style

Bednarski, Łukasz, Rafał Sieńko, Marcin Grygierek, and Tomasz Howiacki. 2021. "New Distributed Fibre Optic 3DSensor with Thermal Self-Compensation System: Design, Research and Field Proof Application Inside Geotechnical Structure" Sensors 21, no. 15: 5089. https://doi.org/10.3390/s21155089

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