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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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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. |
format | Online Article Text |
id | pubmed-8271917 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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