The durability of flexible eddy current array (FECA) sensors in harsh service environments

Abstract Sensors for structural health monitoring (SHM) need to be permanently integrated on structures and withstand the harsh service environments, which has been a big challenge for the application of SHM in aircrafts. This paper focuses on the durability of flexible eddy current array (FECA) sen...

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Autores principales:	Yujian Song, Tao Chen, Ronghong Cui, Yuting He, Xianghong Fan, Binlin Ma
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/afc69c49d02b425fa88632983d67b7f5
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spelling	oai:doaj.org-article:afc69c49d02b425fa88632983d67b7f52021-12-02T16:50:17ZThe durability of flexible eddy current array (FECA) sensors in harsh service environments10.1038/s41598-021-89750-y2045-2322https://doaj.org/article/afc69c49d02b425fa88632983d67b7f52021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89750-yhttps://doaj.org/toc/2045-2322Abstract Sensors for structural health monitoring (SHM) need to be permanently integrated on structures and withstand the harsh service environments, which has been a big challenge for the application of SHM in aircrafts. This paper focuses on the durability of flexible eddy current array (FECA) sensors in harsh service environments of aircrafts, including vibration environment and several typical exposed environments. First, a kind of FECA sensor is illustrated and its integration method is proposed. Moreover, in order to study the durability of the sensor in vibration environment, the modal analysis is performed by the finite element method. According to the simulation results, the durability experiment in vibration environment is carried out under the fourth order vibration mode, which makes the sensor suffer the harshest vibration loads. During the vibration experiment, output signals of the sensor keep stable and the sensor is well bonded to the structure, which shows the integrated sensor has high durability in vibration environment. Finally, the durability of integrated sensors is separately tested in three exposed environments, including salt fog corrosion environment, fluid immersion environment, as well as hygrothermal and ultraviolet-radiation environment. After these environmental exposure experiments, all sensors are well bonded to structures and can effectively monitor fatigue cracks, which shows great durability. Therefore, FECA sensors can survive in harsh service environments of aircrafts, which provides important support for the engineering applications of FECA sensors.Yujian SongTao ChenRonghong CuiYuting HeXianghong FanBinlin MaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yujian Song Tao Chen Ronghong Cui Yuting He Xianghong Fan Binlin Ma The durability of flexible eddy current array (FECA) sensors in harsh service environments
description	Abstract Sensors for structural health monitoring (SHM) need to be permanently integrated on structures and withstand the harsh service environments, which has been a big challenge for the application of SHM in aircrafts. This paper focuses on the durability of flexible eddy current array (FECA) sensors in harsh service environments of aircrafts, including vibration environment and several typical exposed environments. First, a kind of FECA sensor is illustrated and its integration method is proposed. Moreover, in order to study the durability of the sensor in vibration environment, the modal analysis is performed by the finite element method. According to the simulation results, the durability experiment in vibration environment is carried out under the fourth order vibration mode, which makes the sensor suffer the harshest vibration loads. During the vibration experiment, output signals of the sensor keep stable and the sensor is well bonded to the structure, which shows the integrated sensor has high durability in vibration environment. Finally, the durability of integrated sensors is separately tested in three exposed environments, including salt fog corrosion environment, fluid immersion environment, as well as hygrothermal and ultraviolet-radiation environment. After these environmental exposure experiments, all sensors are well bonded to structures and can effectively monitor fatigue cracks, which shows great durability. Therefore, FECA sensors can survive in harsh service environments of aircrafts, which provides important support for the engineering applications of FECA sensors.
format	article
author	Yujian Song Tao Chen Ronghong Cui Yuting He Xianghong Fan Binlin Ma
author_facet	Yujian Song Tao Chen Ronghong Cui Yuting He Xianghong Fan Binlin Ma
author_sort	Yujian Song
title	The durability of flexible eddy current array (FECA) sensors in harsh service environments
title_short	The durability of flexible eddy current array (FECA) sensors in harsh service environments
title_full	The durability of flexible eddy current array (FECA) sensors in harsh service environments
title_fullStr	The durability of flexible eddy current array (FECA) sensors in harsh service environments
title_full_unstemmed	The durability of flexible eddy current array (FECA) sensors in harsh service environments
title_sort	durability of flexible eddy current array (feca) sensors in harsh service environments
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/afc69c49d02b425fa88632983d67b7f5
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The durability of flexible eddy current array (FECA) sensors in harsh service environments

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