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Study of a Fiber Optic Fabry-Perot Strain Sensor for Fuel Assembly Strain Detection

This paper proposes a fiber optic Fabry-Perot (F-P) strain sensing system using non-scan correlation demodulation applied to the health monitoring of the pressurized water reactor’s fuel assembly structures. The structural design and sensing mechanism analysis of the sensor were carried out, and the...

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Detalles Bibliográficos
Autores principales: Jiao, Jianan, Chen, Jianjun, Wang, Ning, Zhang, Jie, Zhu, Yong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9740622/
https://www.ncbi.nlm.nih.gov/pubmed/36501797
http://dx.doi.org/10.3390/s22239097
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author Jiao, Jianan
Chen, Jianjun
Wang, Ning
Zhang, Jie
Zhu, Yong
author_facet Jiao, Jianan
Chen, Jianjun
Wang, Ning
Zhang, Jie
Zhu, Yong
author_sort Jiao, Jianan
collection PubMed
description This paper proposes a fiber optic Fabry-Perot (F-P) strain sensing system using non-scan correlation demodulation applied to the health monitoring of the pressurized water reactor’s fuel assembly structures. The structural design and sensing mechanism analysis of the sensor were carried out, and the strain transfer model from the fuel sheet to the strain gauge was established. After the sensor fabrication and installation, the static tests have been conducted, and the results indicate that the sensing system can accurately measure the microstrain with a sensitivity of up to 12.6 nm/με at a high temperature (300 °C). The dynamic testing shows that the sensing system has a good frequency adaptation at 10–500 Hz. Thermal-hydraulic experiments show that the sensing system can run stably in a nuclear reactor, with high temperature, high pressure, and high-velocity flow flushing; additionally, the consistency deviation of the measured data is less than 1.5%.
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spelling pubmed-97406222022-12-11 Study of a Fiber Optic Fabry-Perot Strain Sensor for Fuel Assembly Strain Detection Jiao, Jianan Chen, Jianjun Wang, Ning Zhang, Jie Zhu, Yong Sensors (Basel) Communication This paper proposes a fiber optic Fabry-Perot (F-P) strain sensing system using non-scan correlation demodulation applied to the health monitoring of the pressurized water reactor’s fuel assembly structures. The structural design and sensing mechanism analysis of the sensor were carried out, and the strain transfer model from the fuel sheet to the strain gauge was established. After the sensor fabrication and installation, the static tests have been conducted, and the results indicate that the sensing system can accurately measure the microstrain with a sensitivity of up to 12.6 nm/με at a high temperature (300 °C). The dynamic testing shows that the sensing system has a good frequency adaptation at 10–500 Hz. Thermal-hydraulic experiments show that the sensing system can run stably in a nuclear reactor, with high temperature, high pressure, and high-velocity flow flushing; additionally, the consistency deviation of the measured data is less than 1.5%. MDPI 2022-11-23 /pmc/articles/PMC9740622/ /pubmed/36501797 http://dx.doi.org/10.3390/s22239097 Text en © 2022 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 Communication
Jiao, Jianan
Chen, Jianjun
Wang, Ning
Zhang, Jie
Zhu, Yong
Study of a Fiber Optic Fabry-Perot Strain Sensor for Fuel Assembly Strain Detection
title Study of a Fiber Optic Fabry-Perot Strain Sensor for Fuel Assembly Strain Detection
title_full Study of a Fiber Optic Fabry-Perot Strain Sensor for Fuel Assembly Strain Detection
title_fullStr Study of a Fiber Optic Fabry-Perot Strain Sensor for Fuel Assembly Strain Detection
title_full_unstemmed Study of a Fiber Optic Fabry-Perot Strain Sensor for Fuel Assembly Strain Detection
title_short Study of a Fiber Optic Fabry-Perot Strain Sensor for Fuel Assembly Strain Detection
title_sort study of a fiber optic fabry-perot strain sensor for fuel assembly strain detection
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9740622/
https://www.ncbi.nlm.nih.gov/pubmed/36501797
http://dx.doi.org/10.3390/s22239097
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