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Distributed Fibre Optic Sensing (DFOS) for Deformation Assessment of Composite Collectors and Pipelines

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Faculty of Building Services, Hydro and Environmental Engineering, Warsaw University of Technology, Nowowiejska St. 20, 00-653 Warsaw, Poland
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Reinforced Concrete Structures Division, Faculty of Civil Engineering, Cracow University of Technology, Warszawska St. 24, 31-155 Cracow, Poland
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SHM System Sp. z o.o., Sp. kom., Libertów, ul. Jana Pawła II 82A, 30-444 Krakow, Poland
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Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology in Krakow, Mickiewicza Al. 30, 30-059 Krakow, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Ginu Rajan
Sensors 2021, 21(17), 5904; https://doi.org/10.3390/s21175904
Received: 9 August 2021 / Revised: 29 August 2021 / Accepted: 30 August 2021 / Published: 2 September 2021
(This article belongs to the Section Optical Sensors)
Due to the low costs of distributed optical fibre sensors (DFOS) and the possibility of their direct integration within layered composite members, DFOS technology has considerable potential in structural health monitoring of linear underground infrastructures. Often, it is challenging to truly simulate the actual ground conditions at all construction stages. Thus, reliable measurements are required to adjust the model and verify theoretical calculations. The article presents a new approach to monitor displacements and strains in Glass Fiber Reinforced Polymer (GFRP) collectors and pipelines using DFOS. The research verifies the effectiveness of the proposed monitoring solution for health monitoring of composite pipelines. Optical fibres were installed over the circumference of a composite tubular pipe, both on the internal and external surfaces, while loaded externally. Analysis of strain profiles allowed for calculating the actual displacements (shape) of the pipe within its cross-section plane using the Trapezoidal method. The accuracy of proposed approach was positively verified both with reference spot displacement transducer as well as numerical simulations using finite element method (FEM). DFOS could obtain a comprehensive view of structural deformations, including both strains and displacements under externally applied load. The knowledge gained during research will be ultimately used for renovating existing collectors. View Full-Text
Keywords: glass fibres; stress concentrations; mechanical testing; process monitoring; distributed fibre optic sensors; strains; displacements; shape sensing glass fibres; stress concentrations; mechanical testing; process monitoring; distributed fibre optic sensors; strains; displacements; shape sensing
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MDPI and ACS Style

Bednarz, B.; Popielski, P.; Sieńko, R.; Howiacki, T.; Bednarski, Ł. Distributed Fibre Optic Sensing (DFOS) for Deformation Assessment of Composite Collectors and Pipelines. Sensors 2021, 21, 5904. https://doi.org/10.3390/s21175904

AMA Style

Bednarz B, Popielski P, Sieńko R, Howiacki T, Bednarski Ł. Distributed Fibre Optic Sensing (DFOS) for Deformation Assessment of Composite Collectors and Pipelines. Sensors. 2021; 21(17):5904. https://doi.org/10.3390/s21175904

Chicago/Turabian Style

Bednarz, Bartosz, Paweł Popielski, Rafał Sieńko, Tomasz Howiacki, and Łukasz Bednarski. 2021. "Distributed Fibre Optic Sensing (DFOS) for Deformation Assessment of Composite Collectors and Pipelines" Sensors 21, no. 17: 5904. https://doi.org/10.3390/s21175904

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