Paper
Strain Transfer of Bonded FBG Sensor for Coal Mining Similar Model
- Authors:
- Guihua Zhang
- Abstract
- To accurately monitor the strain of a host with low strength, a new strain transfer model is proposed for the substrate FBG sensor. In the strain transfer model, the mechanical properties of the host are taken into consideration. The strain relationship between the fiber core and the host is obtained. The theoretical approach was verified by numerical simulation and experimental results. The influences of the mechanical parameters of the host on the strain transfer are analyzed. It is concluded that the strain transfer rate increases nonlinearly with the increase of the shear modulus of the host. The shear modulus of the host has different influence in different strain ranges; for the low strength host, the mechanical parameters of the host have great influence on the strain transfer rate. These results provide theoretical guidelines for the FBG sensor applications in low strength host.
- Keywords
- Fiber Bragg Grating; Strain Transfer; Similar Model; Mechanical Parameter
- StartPage
- 20
- EndPage
- 28
- Doi
- 10.5963/JBAP0403001