Optical Fiber Sensors for Ultrasonic Structural Health Monitoring: A Review

Guided waves (GW) and acoustic emission (AE) -based structural health monitoring (SHM) have widespread applications in structures, as the monitoring of an entire structure is possible with a limited number of sensors. Optical fiber-based sensors offer several advantages, such as their low weight, sm...

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Autores principales:	Rohan Soman, Junghyun Wee, Kara Peters
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	structural health monitoring fiber optic sensors ultrasonic guided waves acoustic emission Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/747a85be32b04571807c54b7a865a79b
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spelling	oai:doaj.org-article:747a85be32b04571807c54b7a865a79b2021-11-11T19:17:17ZOptical Fiber Sensors for Ultrasonic Structural Health Monitoring: A Review10.3390/s212173451424-8220https://doaj.org/article/747a85be32b04571807c54b7a865a79b2021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7345https://doaj.org/toc/1424-8220Guided waves (GW) and acoustic emission (AE) -based structural health monitoring (SHM) have widespread applications in structures, as the monitoring of an entire structure is possible with a limited number of sensors. Optical fiber-based sensors offer several advantages, such as their low weight, small size, ability to be embedded, and immunity to electro-magnetic interference. Therefore, they have long been regarded as an ideal sensing solution for SHM. In this review, the different optical fiber technologies used for ultrasonic sensing are discussed in detail. Special attention has been given to the new developments in the use of FBG sensors for ultrasonic measurements, as they are the most promising and widely used of the sensors. The paper highlights the physics of the wave coupling to the optical fiber and explains the different phenomena such as directional sensitivity and directional coupling of the wave. Applications of the different sensors in real SHM applications have also been discussed. Finally, the review identifies the encouraging trends and future areas where the field is expected to develop.Rohan SomanJunghyun WeeKara PetersMDPI AGarticlestructural health monitoringfiber optic sensorsultrasonicguided wavesacoustic emissionChemical technologyTP1-1185ENSensors, Vol 21, Iss 7345, p 7345 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	structural health monitoring fiber optic sensors ultrasonic guided waves acoustic emission Chemical technology TP1-1185
spellingShingle	structural health monitoring fiber optic sensors ultrasonic guided waves acoustic emission Chemical technology TP1-1185 Rohan Soman Junghyun Wee Kara Peters Optical Fiber Sensors for Ultrasonic Structural Health Monitoring: A Review
description	Guided waves (GW) and acoustic emission (AE) -based structural health monitoring (SHM) have widespread applications in structures, as the monitoring of an entire structure is possible with a limited number of sensors. Optical fiber-based sensors offer several advantages, such as their low weight, small size, ability to be embedded, and immunity to electro-magnetic interference. Therefore, they have long been regarded as an ideal sensing solution for SHM. In this review, the different optical fiber technologies used for ultrasonic sensing are discussed in detail. Special attention has been given to the new developments in the use of FBG sensors for ultrasonic measurements, as they are the most promising and widely used of the sensors. The paper highlights the physics of the wave coupling to the optical fiber and explains the different phenomena such as directional sensitivity and directional coupling of the wave. Applications of the different sensors in real SHM applications have also been discussed. Finally, the review identifies the encouraging trends and future areas where the field is expected to develop.
format	article
author	Rohan Soman Junghyun Wee Kara Peters
author_facet	Rohan Soman Junghyun Wee Kara Peters
author_sort	Rohan Soman
title	Optical Fiber Sensors for Ultrasonic Structural Health Monitoring: A Review
title_short	Optical Fiber Sensors for Ultrasonic Structural Health Monitoring: A Review
title_full	Optical Fiber Sensors for Ultrasonic Structural Health Monitoring: A Review
title_fullStr	Optical Fiber Sensors for Ultrasonic Structural Health Monitoring: A Review
title_full_unstemmed	Optical Fiber Sensors for Ultrasonic Structural Health Monitoring: A Review
title_sort	optical fiber sensors for ultrasonic structural health monitoring: a review
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/747a85be32b04571807c54b7a865a79b
work_keys_str_mv	AT rohansoman opticalfibersensorsforultrasonicstructuralhealthmonitoringareview AT junghyunwee opticalfibersensorsforultrasonicstructuralhealthmonitoringareview AT karapeters opticalfibersensorsforultrasonicstructuralhealthmonitoringareview
_version_	1718431592192409600

Optical Fiber Sensors for Ultrasonic Structural Health Monitoring: A Review

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