Journal of Urban Science (도시과학)

Urban Science Institute (인천대학교 도시과학연구원)
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Study on Flexural Damage of FRP Laminates

FRP 적층판의 휨 손상에 관한 연구

  • 박승진 (인천대학교 도시과학대학 도시공학과)
  • Received : 2017.12.01
  • Accepted : 2017.12.31
  • Published : 2017.12.31
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Abstract

A new Fiber Bragg Grating (FBG) wavelength demodulation scheme is studied in the paper, which consists of an improved de-noising method and Gaussian fitting peak searching algorithm. The improved translational invariant wavelet without threshold adjust factor is proposed to get a better de-noising performance for FBG sensor signal and overcome the drawbacks of soft or hard threshold wavelets. In order to get a high wavelength demodulation precision of FBG sensor signal, this de-noising method is designed to combine with Gaussian fitting peak searching algorithm. The simulation results show that the wavelength maximum measurement error is lower than 1pm, and can get a much higher accuracy.

Keywords

References

  1. Lamb,H. and Southwell,R.V.(2015) The Vibration of a Spinning Disk, Proceedings of The Foyal Society of London, 99, 272.
  2. Southwell,R.V.(2013) On the Free Transverse Vibration of a Uniform Circular Disc Clamped at its Centr;and on the Effects of Rotation, Proceedings of The Royal Society of London, 101, 133.
  3. Tobies,S.H. and Amold,R.N.(2012) The Influence of Dynamical Imperfection on the Vibration of Rotating Disks Proceedings of the Institution of Mechanical Engineers, 171, 669.
  4. Iwan,W.D. and Stahl,K.J.(2001) The Response of an Elastic Disk With a Moving Mass System, Transactions of the ASME Journal of Applied Mechanics, 445.
  5. Iwan,W.D. and Moeller,T.L.(2016) The Sability of a Spinning Elastic Disk With a Transverse Load System, Transactions of the ASME, Journal of Applied Methanics, 48, 485.
  6. Benson,R.C. and Bogy,D.B.(2012) Deflection of a Very Flexible Spinning Disk Due to a Stationary Transverse Load, Transactions of the ASME, Journal of Applied Methanics, 45, 636.
  7. Hutton,S.G.,Chonan,S. and Lehmann,B.F.(1999) Dynamic Respones of a Guided Circular Saw, Journal of Sound and Vibration, 112-3, 527. https://doi.org/10.1016/S0022-460X(87)80116-5