A constrained cylinder model of strain transfer for packaged fiber Bragg grating sensors embedded in inelastic medium

2019 ◽  
Vol 26 (5) ◽  
pp. e2335 ◽  
Author(s):  
Ying Huang ◽  
Yi Bao ◽  
Genda Chen ◽  
Zhi Zhou
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Strain Transfer ◽  
Fiber Bragg Grating Sensors ◽  
Cylinder Model

Study on strain transfer of embedded fiber Bragg grating sensors

2014 ◽  
Vol 53 (8) ◽  
pp. 085105 ◽  
Author(s):  
Rujun Wu ◽  
Bailin Zheng ◽  
Kunkun Fu ◽  
Pengfei He ◽  
Yuegang Tan
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Strain Transfer ◽  
Fiber Bragg Grating Sensors

scholarly journals A Strain-Transfer Model of Surface-Bonded Sapphire-Derived Fiber Bragg Grating Sensors

2020 ◽  
Vol 10 (12) ◽  
pp. 4399
Author(s):  
Penghao Zhang ◽  
Li Zhang ◽  
Zhongyu Wang ◽  
Shuang Chen ◽  
Zhendong Shang
Keyword(s):  
Fiber Bragg Grating ◽  
Alumina Content ◽  
Bragg Grating ◽  
Homogeneous Material ◽  
Transfer Model ◽  
Layer Model ◽  
Core Diameter ◽  
Strain Transfer ◽  
Fiber Bragg Grating Sensors ◽  
The Core

An improved strain-transfer model was developed for surface-bonded sapphire-derived fiber Bragg grating sensors. In the model, the core and cladding of the fiber are separated into individual layers, unlike in conventional treatment that regards the fiber as a unitive structure. The separation is because large shear deformation occurs in the cladding when the core of the sapphire-derived fiber is heavily doped with alumina, a material with a high Young’s modulus. Thus, the model was established to have four layers, namely, a core, a cladding, an adhesive, and a host material. A three-layer model could also be obtained from the regressed four-layer model when the core’s radius increased to that of the cladding, which treated the fiber as if it were still homogeneous material. The accuracy of both the four- and three-layer models was verified using a finite-element model and a tensile-strain experiment. Experiment results indicated that a larger core diameter and a higher alumina content resulted in a lower average strain-transfer rate. Error percentages were less than 1.8% when the four- and three-layer models were used to predict the transfer rates of sensors with high and low alumina content, respectively.

Coupled mechanism Analysis of strain transfer of Fiber Bragg Grating Sensors

2017 ◽  
Vol 46 (10) ◽  
pp. 1006003
Author(s):  
吴入军 WU Ru-jun ◽  
郑百林 ZHENG Bai-lin ◽  
陈田 CHEN Tian ◽  
常远 CHANG Yuan ◽  
付昆昆 FU Kun-kun
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Mechanism Analysis ◽  
Strain Transfer ◽  
Fiber Bragg Grating Sensors
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