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Investigate the optical FBG sensor to monitor displacement and vibration in civil structure

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Abstract

In this paper, experimentally Fiber Bragg grating (FBG) based optical sensor with respect to applied load to civil structure were presented. Experimentally, we have monitored the health of concrete beam using displacement and vibration FBG sensor. We have applied the load using hydraulic jack and loading assembly on beam then monitor the health for displacement sensor, further the impact hammer has been used for exciting the beam for vibration sensing. In this paper the deflection is measured using displacement sensor with maximum value 32.5 mm and vibration is monitor using vibration sensor with maximum vibration amplitude 0.7 G at load values 50 kN. Change in wavelength with respect to load is also obtained and achieved maximum 5.2 and 0.14 nm for displacement and vibration sensor, respectively.

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Correspondence to Gurpreet Kaur.

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Kaur, G., Kaler, R.S. Investigate the optical FBG sensor to monitor displacement and vibration in civil structure. Opt Quant Electron 54, 121 (2022). https://doi.org/10.1007/s11082-021-03475-w

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  • DOI: https://doi.org/10.1007/s11082-021-03475-w

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