Thermal Strain Measured by Fiber Bragg Grating Sensors

2016 Sensors and materials  
An analytical solution is presented to predict the thermal stress and strain induced by a temperature change on an optic-fiber sensor surface bonded onto a host structure. It shows that the thermal strain transferred from the host material to the optic-fiber is heavily affected by the bonding characteristics including the optic-fiber, protective coating, adhesive and host material. Experimental tests were conducted using a fiber Bragg grating sensor to evaluate the thermal strain on the
more » ... rain on the surface-bonded optic fiber. The accuracy of the theoretical prediction was validated by the experimental results. Experimental measurements matched well with the analytical predictions.
doi:10.18494/sam.2016.1382 fatcat:hylo6rc3rvbcbgfeelfzhdfigu