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Fiber Bragg Grating Sensors for Underwater Vibration Measurement: Potential Hydropower Applications

The present paper assesses the performance and characteristics of fiber Bragg grating sensors, with a special interest in their applications in hydraulic machinery and systems. The hydropower industry is turning to this technology with high expectations of obtaining high quality data to validate and...

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Detalles Bibliográficos
Autores principales: de la Torre, Oscar, Floris, Ignazio, Sales, Salvador, Escaler, Xavier
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8271917/
https://www.ncbi.nlm.nih.gov/pubmed/34206676
http://dx.doi.org/10.3390/s21134272
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author de la Torre, Oscar
Floris, Ignazio
Sales, Salvador
Escaler, Xavier
author_facet de la Torre, Oscar
Floris, Ignazio
Sales, Salvador
Escaler, Xavier
author_sort de la Torre, Oscar
collection PubMed
description The present paper assesses the performance and characteristics of fiber Bragg grating sensors, with a special interest in their applications in hydraulic machinery and systems. The hydropower industry is turning to this technology with high expectations of obtaining high quality data to validate and calibrate numerical models that could be used as digital twins of key assets, further strengthening the sector’s relevant position within industry 4.0. Prior to any validation, fiber Bragg grating sensors’ ability to perform well underwater for long periods of time with minimal degradation, and their ease of scalability, drew the authors´ attention. A simplified modal analysis of a partially submerged beam is proposed here as a first step to validate the potential of this type of technology for hydropower applications. Fiber Bragg grating sensors are used to obtain the beam’s natural frequencies and to damp vibrations under different conditions. The results are compared with more established waterproof electric strain gauges and a laser vibrometer with good agreement. The presence of several sensors in a single fiber ensures high spatial resolution, fundamental to precisely determine vibration patterns, which is a main concern in this industry. In this work, the beam’s vibration patterns have been successfully captured under different excitations and conditions.
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spelling pubmed-82719172021-07-11 Fiber Bragg Grating Sensors for Underwater Vibration Measurement: Potential Hydropower Applications de la Torre, Oscar Floris, Ignazio Sales, Salvador Escaler, Xavier Sensors (Basel) Article The present paper assesses the performance and characteristics of fiber Bragg grating sensors, with a special interest in their applications in hydraulic machinery and systems. The hydropower industry is turning to this technology with high expectations of obtaining high quality data to validate and calibrate numerical models that could be used as digital twins of key assets, further strengthening the sector’s relevant position within industry 4.0. Prior to any validation, fiber Bragg grating sensors’ ability to perform well underwater for long periods of time with minimal degradation, and their ease of scalability, drew the authors´ attention. A simplified modal analysis of a partially submerged beam is proposed here as a first step to validate the potential of this type of technology for hydropower applications. Fiber Bragg grating sensors are used to obtain the beam’s natural frequencies and to damp vibrations under different conditions. The results are compared with more established waterproof electric strain gauges and a laser vibrometer with good agreement. The presence of several sensors in a single fiber ensures high spatial resolution, fundamental to precisely determine vibration patterns, which is a main concern in this industry. In this work, the beam’s vibration patterns have been successfully captured under different excitations and conditions. MDPI 2021-06-22 /pmc/articles/PMC8271917/ /pubmed/34206676 http://dx.doi.org/10.3390/s21134272 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
de la Torre, Oscar
Floris, Ignazio
Sales, Salvador
Escaler, Xavier
Fiber Bragg Grating Sensors for Underwater Vibration Measurement: Potential Hydropower Applications
title Fiber Bragg Grating Sensors for Underwater Vibration Measurement: Potential Hydropower Applications
title_full Fiber Bragg Grating Sensors for Underwater Vibration Measurement: Potential Hydropower Applications
title_fullStr Fiber Bragg Grating Sensors for Underwater Vibration Measurement: Potential Hydropower Applications
title_full_unstemmed Fiber Bragg Grating Sensors for Underwater Vibration Measurement: Potential Hydropower Applications
title_short Fiber Bragg Grating Sensors for Underwater Vibration Measurement: Potential Hydropower Applications
title_sort fiber bragg grating sensors for underwater vibration measurement: potential hydropower applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8271917/
https://www.ncbi.nlm.nih.gov/pubmed/34206676
http://dx.doi.org/10.3390/s21134272
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