Strain Transfer Analysis of a Clamped Fiber Bragg Grating Sensor

Clamped fiber Bragg grating (FBG) sensors have been widely applied in engineering strain measurements due to their advantages of high flexibility and efficiency. However, due to the existence of the interlayer, the strain measured by the encapsulated FBG sensor is not equal to the strain of the host...

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Main Authors:	Li Sun, Chuang Li, Jun Li, Chunwei Zhang, Xiaosu Ding
Format:	Article
Language:	English
Published:	MDPI AG 2017-02-01
Series:	Applied Sciences
Subjects:	strain transfer analysis clamped fiber Bragg grating (FBG) sensor shear-lag theory gauge ratio interlayer thickness
Online Access:	http://www.mdpi.com/2076-3417/7/2/188

id	doaj-9b68c678540f45688e7ca8843007ada5
record_format	Article
spelling	doaj-9b68c678540f45688e7ca8843007ada52020-11-24T21:07:56ZengMDPI AGApplied Sciences2076-34172017-02-017218810.3390/app7020188app7020188Strain Transfer Analysis of a Clamped Fiber Bragg Grating SensorLi Sun0Chuang Li1Jun Li2Chunwei Zhang3Xiaosu Ding4School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaSchool of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaCentre for Infrastructural Monitoring and Protection, School of Civil and Mechanical Engineering, Curtin University, Kent Street, Bentley WA 6102, AustraliaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaClamped fiber Bragg grating (FBG) sensors have been widely applied in engineering strain measurements due to their advantages of high flexibility and efficiency. However, due to the existence of the interlayer, the strain measured by the encapsulated FBG sensor is not equal to the strain of the host material, which causes strain measurement errors. In this paper, the strain transfer analysis of a clamped FBG sensor based on the shear-lag theory is conducted to improve the accuracy of strain measurements. A novel theoretical model for the axial strain distribution of a clamped FBG sensor is proposed. It is also discussed how the gauge ratio and interlayer thickness affect the strain transfer rate. The accuracy of the proposed theoretical model is verified by experimental tensile tests. The theoretical value of the strain transfer rate matches well with the tested value.http://www.mdpi.com/2076-3417/7/2/188strain transfer analysisclamped fiber Bragg grating (FBG) sensorshear-lag theorygauge ratiointerlayer thickness
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Li Sun Chuang Li Jun Li Chunwei Zhang Xiaosu Ding
spellingShingle	Li Sun Chuang Li Jun Li Chunwei Zhang Xiaosu Ding Strain Transfer Analysis of a Clamped Fiber Bragg Grating Sensor Applied Sciences strain transfer analysis clamped fiber Bragg grating (FBG) sensor shear-lag theory gauge ratio interlayer thickness
author_facet	Li Sun Chuang Li Jun Li Chunwei Zhang Xiaosu Ding
author_sort	Li Sun
title	Strain Transfer Analysis of a Clamped Fiber Bragg Grating Sensor
title_short	Strain Transfer Analysis of a Clamped Fiber Bragg Grating Sensor
title_full	Strain Transfer Analysis of a Clamped Fiber Bragg Grating Sensor
title_fullStr	Strain Transfer Analysis of a Clamped Fiber Bragg Grating Sensor
title_full_unstemmed	Strain Transfer Analysis of a Clamped Fiber Bragg Grating Sensor
title_sort	strain transfer analysis of a clamped fiber bragg grating sensor
publisher	MDPI AG
series	Applied Sciences
issn	2076-3417
publishDate	2017-02-01
description	Clamped fiber Bragg grating (FBG) sensors have been widely applied in engineering strain measurements due to their advantages of high flexibility and efficiency. However, due to the existence of the interlayer, the strain measured by the encapsulated FBG sensor is not equal to the strain of the host material, which causes strain measurement errors. In this paper, the strain transfer analysis of a clamped FBG sensor based on the shear-lag theory is conducted to improve the accuracy of strain measurements. A novel theoretical model for the axial strain distribution of a clamped FBG sensor is proposed. It is also discussed how the gauge ratio and interlayer thickness affect the strain transfer rate. The accuracy of the proposed theoretical model is verified by experimental tensile tests. The theoretical value of the strain transfer rate matches well with the tested value.
topic	strain transfer analysis clamped fiber Bragg grating (FBG) sensor shear-lag theory gauge ratio interlayer thickness
url	http://www.mdpi.com/2076-3417/7/2/188
work_keys_str_mv	AT lisun straintransferanalysisofaclampedfiberbragggratingsensor AT chuangli straintransferanalysisofaclampedfiberbragggratingsensor AT junli straintransferanalysisofaclampedfiberbragggratingsensor AT chunweizhang straintransferanalysisofaclampedfiberbragggratingsensor AT xiaosuding straintransferanalysisofaclampedfiberbragggratingsensor
_version_	1716761464192106496

Strain Transfer Analysis of a Clamped Fiber Bragg Grating Sensor

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