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Design and analysis of fiber Bragg grating sensor to monitor strain and temperature for structural health monitoring

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Abstract

In this paper, we have proposed a Bragg grating based sensor to monitor health of civil structures at distinct temperatures. We have considered increased number of gratings with suitable refractive index to enhance sensitivity of fiber Bragg grating sensor. Analysis of Bragg wavelength with respect to load and temperature is successfully studied. The simulation results reveal that when independently strain (50 units per simulation) and temperature (25 °C) are increased uniformly, a linear shift in Bragg wavelength 0.064 and 0.347 nm is observed, respectively. Similarly, when both strain and temperature are increased (ε = 50 & T = 25 °C) concurrently, a directly proportional relation is found in Bragg wavelength (0.403 nm). The results verify the enhanced performance of as-proposed sensor, employing it could be potentially used in civil, bio-medical and military domains.

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Authors and Affiliations

  1. Electronics and Communication Engineering Department, Thapar Institute of Engineering and Technology, Patiala, 147004, India

    Ishant Dhingra & R. S. Kaler

  2. Electronics and Communication Engineering Department, University Institute of Engineering, Chandigarh University, Gharuan, Mohali, Punjab, 140413, India

    Gurpreet Kaur

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  1. Ishant Dhingra
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  2. Gurpreet Kaur
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  3. R. S. Kaler
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Correspondence to Gurpreet Kaur.

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Dhingra, I., Kaur, G. & Kaler, R.S. Design and analysis of fiber Bragg grating sensor to monitor strain and temperature for structural health monitoring. Opt Quant Electron 53, 619 (2021). https://doi.org/10.1007/s11082-021-03270-7

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