Fundamental Studies on the Use of Distributed Fibre Optical Sensing on Concrete and Reinforcing Bars

Distributed fibre optical sensing (DFOS) allows for quasi-continuous strain measurement in a broad range of gauge lengths and measurement frequencies. In particular, Rayleigh backscatter-based coherent optical frequency domain reflectometry has recently registered a significant application increase...

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Autores principales:	Tena Galkovski, Yasmin Lemcherreq, Jaime Mata-Falcón, Walter Kaufmann
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	distributed fibre optical sensing reinforcing steel concrete compression Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/d31857b812004fe09df4b874d491add5
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spelling	oai:doaj.org-article:d31857b812004fe09df4b874d491add52021-11-25T18:58:09ZFundamental Studies on the Use of Distributed Fibre Optical Sensing on Concrete and Reinforcing Bars10.3390/s212276431424-8220https://doaj.org/article/d31857b812004fe09df4b874d491add52021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7643https://doaj.org/toc/1424-8220Distributed fibre optical sensing (DFOS) allows for quasi-continuous strain measurement in a broad range of gauge lengths and measurement frequencies. In particular, Rayleigh backscatter-based coherent optical frequency domain reflectometry has recently registered a significant application increase in structural concrete research and monitoring thanks to its numerous merits, such as high resolution and low invasiveness. However, it is not a plug-and-play technique. The quality of the acquired data depends highly on the choice of the fibre optical sensor and the methods of instrumentation and post-processing. Furthermore, its unprecedented resolution and sensitivity allow capturing local effects not well documented so far. This paper analyses the suitability of DFOS based on Rayleigh backscatter for reliably measuring strains and discusses the origin and structural relevance of local variations in the results. A series of experimental investigations are presented, comprising tensile tests on bare reinforcing bars and concrete compression tests. A critical analysis of the results leads to a best practice for applying DFOS to reinforcing bars and concrete, which establishes a basis for reliable, accurate measurements in structural concrete applications with bonded reinforcement. Tena GalkovskiYasmin LemcherreqJaime Mata-FalcónWalter KaufmannMDPI AGarticledistributed fibre optical sensingreinforcing steelconcrete compressionChemical technologyTP1-1185ENSensors, Vol 21, Iss 7643, p 7643 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	distributed fibre optical sensing reinforcing steel concrete compression Chemical technology TP1-1185
spellingShingle	distributed fibre optical sensing reinforcing steel concrete compression Chemical technology TP1-1185 Tena Galkovski Yasmin Lemcherreq Jaime Mata-Falcón Walter Kaufmann Fundamental Studies on the Use of Distributed Fibre Optical Sensing on Concrete and Reinforcing Bars
description	Distributed fibre optical sensing (DFOS) allows for quasi-continuous strain measurement in a broad range of gauge lengths and measurement frequencies. In particular, Rayleigh backscatter-based coherent optical frequency domain reflectometry has recently registered a significant application increase in structural concrete research and monitoring thanks to its numerous merits, such as high resolution and low invasiveness. However, it is not a plug-and-play technique. The quality of the acquired data depends highly on the choice of the fibre optical sensor and the methods of instrumentation and post-processing. Furthermore, its unprecedented resolution and sensitivity allow capturing local effects not well documented so far. This paper analyses the suitability of DFOS based on Rayleigh backscatter for reliably measuring strains and discusses the origin and structural relevance of local variations in the results. A series of experimental investigations are presented, comprising tensile tests on bare reinforcing bars and concrete compression tests. A critical analysis of the results leads to a best practice for applying DFOS to reinforcing bars and concrete, which establishes a basis for reliable, accurate measurements in structural concrete applications with bonded reinforcement.
format	article
author	Tena Galkovski Yasmin Lemcherreq Jaime Mata-Falcón Walter Kaufmann
author_facet	Tena Galkovski Yasmin Lemcherreq Jaime Mata-Falcón Walter Kaufmann
author_sort	Tena Galkovski
title	Fundamental Studies on the Use of Distributed Fibre Optical Sensing on Concrete and Reinforcing Bars
title_short	Fundamental Studies on the Use of Distributed Fibre Optical Sensing on Concrete and Reinforcing Bars
title_full	Fundamental Studies on the Use of Distributed Fibre Optical Sensing on Concrete and Reinforcing Bars
title_fullStr	Fundamental Studies on the Use of Distributed Fibre Optical Sensing on Concrete and Reinforcing Bars
title_full_unstemmed	Fundamental Studies on the Use of Distributed Fibre Optical Sensing on Concrete and Reinforcing Bars
title_sort	fundamental studies on the use of distributed fibre optical sensing on concrete and reinforcing bars
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d31857b812004fe09df4b874d491add5
work_keys_str_mv	AT tenagalkovski fundamentalstudiesontheuseofdistributedfibreopticalsensingonconcreteandreinforcingbars AT yasminlemcherreq fundamentalstudiesontheuseofdistributedfibreopticalsensingonconcreteandreinforcingbars AT jaimematafalcon fundamentalstudiesontheuseofdistributedfibreopticalsensingonconcreteandreinforcingbars AT walterkaufmann fundamentalstudiesontheuseofdistributedfibreopticalsensingonconcreteandreinforcingbars
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Fundamental Studies on the Use of Distributed Fibre Optical Sensing on Concrete and Reinforcing Bars

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