Sensitivity Improvement And Optomechanical Analysis Of Composite Material Using Fiber Bragg Grating Sensor Optomechanical Analysis of Composite Material Using Fibre Bragg Grating Sensor

  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract

    This paper presents the design and simulation of FBG as a pressure sensor. Fiber Bragg Grating (FBG) coated with different materials and their sensitivity has been investigated. Using optomechanical equations strain and shift in wavelength values are calculated  for a bare FBG and FBG coated with PMMA, polystyrene and aluminium. Bragg wavelength/center wavelength shifts when there is perturbation on the fiber gratings due to pressure or any external change. Design parameter is achieved by FBG spectral characterization. Using R-soft and Grating –Mod tool box grating length, modulation depth, grating pitch and other physical parameters are changed and simulation is carried out. In literature various methods are proposed for sensitivity improvement. In this work from the simulation results and sensitivity calculation it was noted that FBG coated with PMMA offers good sensitivity of 1.17µm/µɛ.  Optomechanical simulation in Comsol multiphysics has also been investigated to obtain mechanical stress and strain with optical spectral response  for metal embedded FBG sensor.Remarkable shift in wavelength is observed during the analysis. Linear displacement of fibre found with respect to arc length.  Metal embedded FBG sensor is having tremendous application in aviation, automobiles,machine tools.




  • Keywords

    Fiber Bragg Grating, Layered composite, Optomechanical, PMMA, Sensitivity, Strain Monitoring,

  • References

      [1] Mihailov, S, J.(2012) Fiber bragg grating sensors for harsh environments, Sensors, vol. 12, no. 2, pp.1898-1918,

      [2] Pinet, E (2011, May) Pressure measurement with fiber-optic sensors: commercial technologies an applications, in Proceedings of the 21st International Conference on Optical Fiber Sensors, Vol.7753, pp.4144.

      [3] Guo, H., Xiao,G., Mirad, N &Yao,J. (2011) Fiber optic sensors for structural health monitoring of air platforms, Sensors, vol. 11, no. 4, pp. 3687–3705.

      [4] Higuera, J, M, L., Cobo, L, R., Incera, A, Q & Cobo, A. (2011) Fiber optic sensors in structural health monitoring, Journal of Lightwave Technology, vol. 29, no. 4, pp. 587–608. DOI: 10.1109/JLT.2011.2106479.

      [5] Zhang, Y., Feng, D., Liu, Z., Guo, Z., Dong, X., Chiang, K,S, & Chu,B,C,B.(2001, June) High Sensitivity Pressure Sensor using a Shielded Polymer-coated Fiber Bragg Grating, IEEE Photonic Technology Letters, Vol.13, no.6. DOI: 10.1109/68.924043.

      [6] Guemes, A., Lopez, A, F., Crespo, B, H. (2013, November) Monitoring Damage growth in composite materials by FBG sensors,” 5th International Symposium on NDT in Aerospace, Singapore ,pp.13-15.

      [7] Liang, X., Chen, X., Huang, H., Liu, W.(2014) Study on sensitivity Improving of Fiber Bragg Grating Based pH Sensor, Photonic Sensor, Vol.4, No.1, pp.28-33.

      [8] Shen, W., Yan, R, J., Xu, L., Tang, G,N., Chen,X,L.(2015) Application study on FBG sensor applied to hull Structure health monitoring, Optik 126(17), pp. 1499-1504.

      [9] Mishra, V., Lohar, M., Amphawan, A. (2016) Improvement in temperature Sensitivity of FBG by coating of different materials, Optik, pp.825-828.

      [10] Li, X., Prinz, F., Adams, R, H. (2003) Metal embedded Fibre Bragg grating Sensors in Layered Manufacturing, Journal of Manufacturing Science and Engineering,Volume 125,Issue 3.pp 10-12. doi:10.1115/1.1581889.




Article ID: 23777
DOI: 10.14419/ijet.v7i4.36.23777

Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.