Fiber optic Fabry–Perot sensor that can amplify ultrasonic wave for an enhanced partial discharge detection

Abstract Ultrasonic wave is a powerful tool for many applications, such as structural health monitoring, medical diagnosis and partial discharges (PDs) detection. The fiber optic extrinsic Fabry–Perot interferometric (EFPI) sensor has become an ideal candidate for detecting weak ultrasonic signals d...

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Autores principales:	Haoyong Li, Jian Bu, Wenli Li, Jiaming Lv, Xiejun Wang, Kejia Hu, Yiting Yu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8ee3575ae84844f4b2cbaed263edcb84
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spelling	oai:doaj.org-article:8ee3575ae84844f4b2cbaed263edcb842021-12-02T16:45:47ZFiber optic Fabry–Perot sensor that can amplify ultrasonic wave for an enhanced partial discharge detection10.1038/s41598-021-88144-42045-2322https://doaj.org/article/8ee3575ae84844f4b2cbaed263edcb842021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88144-4https://doaj.org/toc/2045-2322Abstract Ultrasonic wave is a powerful tool for many applications, such as structural health monitoring, medical diagnosis and partial discharges (PDs) detection. The fiber optic extrinsic Fabry–Perot interferometric (EFPI) sensor has become an ideal candidate for detecting weak ultrasonic signals due to its inherent advantages, and each time with a performance enhancement, it can bring great application potential in broadened fields. Herein, an EFPI ultrasonic sensor for PDs detection is proposed. The sensing diaphragm uses a 5-μm-thickness and beam-supported structure to improve the responsive sensitivity of the sensor at the resonant frequency. Furthermore, the ability of the sensor to detect characteristic ultrasonic signal of PDs is further enhanced by assembling a Fresnel-zone-plate (FZP)-based ultrasonic lens with the sensing probe to amplify the ultrasonic wave before it excites the sensing diaphragm. The final testing results show that the originally developed sensor owns the sensitivity of − 19.8 dB re. 1 V/Pa at resonant frequency. While, when the FZP is assembled with the probe, the sensitivity reaches to − 12.4 dB re. 1 V/Pa, and leads to a narrower frequency band, which indicates that the proposed method has a great potential to enhance the detection ability of sensor to characteristic ultrasonic wave of PDs.Haoyong LiJian BuWenli LiJiaming LvXiejun WangKejia HuYiting YuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Haoyong Li Jian Bu Wenli Li Jiaming Lv Xiejun Wang Kejia Hu Yiting Yu Fiber optic Fabry–Perot sensor that can amplify ultrasonic wave for an enhanced partial discharge detection
description	Abstract Ultrasonic wave is a powerful tool for many applications, such as structural health monitoring, medical diagnosis and partial discharges (PDs) detection. The fiber optic extrinsic Fabry–Perot interferometric (EFPI) sensor has become an ideal candidate for detecting weak ultrasonic signals due to its inherent advantages, and each time with a performance enhancement, it can bring great application potential in broadened fields. Herein, an EFPI ultrasonic sensor for PDs detection is proposed. The sensing diaphragm uses a 5-μm-thickness and beam-supported structure to improve the responsive sensitivity of the sensor at the resonant frequency. Furthermore, the ability of the sensor to detect characteristic ultrasonic signal of PDs is further enhanced by assembling a Fresnel-zone-plate (FZP)-based ultrasonic lens with the sensing probe to amplify the ultrasonic wave before it excites the sensing diaphragm. The final testing results show that the originally developed sensor owns the sensitivity of − 19.8 dB re. 1 V/Pa at resonant frequency. While, when the FZP is assembled with the probe, the sensitivity reaches to − 12.4 dB re. 1 V/Pa, and leads to a narrower frequency band, which indicates that the proposed method has a great potential to enhance the detection ability of sensor to characteristic ultrasonic wave of PDs.
format	article
author	Haoyong Li Jian Bu Wenli Li Jiaming Lv Xiejun Wang Kejia Hu Yiting Yu
author_facet	Haoyong Li Jian Bu Wenli Li Jiaming Lv Xiejun Wang Kejia Hu Yiting Yu
author_sort	Haoyong Li
title	Fiber optic Fabry–Perot sensor that can amplify ultrasonic wave for an enhanced partial discharge detection
title_short	Fiber optic Fabry–Perot sensor that can amplify ultrasonic wave for an enhanced partial discharge detection
title_full	Fiber optic Fabry–Perot sensor that can amplify ultrasonic wave for an enhanced partial discharge detection
title_fullStr	Fiber optic Fabry–Perot sensor that can amplify ultrasonic wave for an enhanced partial discharge detection
title_full_unstemmed	Fiber optic Fabry–Perot sensor that can amplify ultrasonic wave for an enhanced partial discharge detection
title_sort	fiber optic fabry–perot sensor that can amplify ultrasonic wave for an enhanced partial discharge detection
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8ee3575ae84844f4b2cbaed263edcb84
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Fiber optic Fabry–Perot sensor that can amplify ultrasonic wave for an enhanced partial discharge detection

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