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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2021-05-01
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Online Access: | https://doi.org/10.1038/s41598-021-89750-y |
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doaj-afc69c49d02b425fa88632983d67b7f52021-05-16T11:23:54ZengNature Publishing GroupScientific Reports2045-23222021-05-0111111410.1038/s41598-021-89750-yThe durability of flexible eddy current array (FECA) sensors in harsh service environmentsYujian Song0Tao Chen1Ronghong Cui2Yuting He3Xianghong Fan4Binlin Ma5Aeronautic Engineering College, Air Force Engineering UniversityAeronautic Engineering College, Air Force Engineering UniversityAeronautic Engineering College, Air Force Engineering UniversityAeronautic Engineering College, Air Force Engineering UniversityAeronautic Engineering College, Air Force Engineering UniversityAeronautic Engineering College, Air Force Engineering UniversityAbstract 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.https://doi.org/10.1038/s41598-021-89750-y |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yujian Song Tao Chen Ronghong Cui Yuting He Xianghong Fan Binlin Ma |
spellingShingle |
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 Scientific Reports |
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 Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2021-05-01 |
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. |
url |
https://doi.org/10.1038/s41598-021-89750-y |
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