Theory Analysis of FBG Characteristics under 3D Homogeneous Stress Field

Article Preview

Abstract:

FBG sensing characteristics and model under three-dimensional stress are studyed in this paper. Theory analysis indicates that the reflection spectra of FBG is gradually splitted into two resonance peaks with the increase of the load and the two resonance peaks have a linear relation to the load. The difference of the wavelength sensitivity of the two directions of FBG is much less than the conditions of FBG only under transverse force, that is to say, the axial force plays a leading role in the shift amount of center wavelength.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

213-217

Citation:

Online since:

April 2012

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] F. Colpo, L. Humbert and J. Botsis. Characterisation of residual stresses in a single fiber composite with FBG sensor[J]. Compos Sci Technol. 2007, 67: 1830–1841.

DOI: 10.1016/j.compscitech.2006.10.024

Google Scholar

[2] J.G. Liu, C. Schmidt-Hattenberger and G. Borm. Dynamic strain measurement with a fibre Bragg grating sensor system[J]. Meas Sci Technol. 2002, 32: 151–161.

DOI: 10.1016/s0263-2241(02)00007-6

Google Scholar

[3] Y. Liu, L. Zhang and I. Bennion. Fibre optical load sensors with high transverse strain sensitivity based on long-period gratings in B/Ge co-doped fibre[J]. Electron. Lett. 1999, 35: 661–663.

DOI: 10.1049/el:19990457

Google Scholar

[4] C.M. Lawrence, D.V. Nelson, E. Udd and T. Bennett. A fibre optic sensor for transverse strain measurement[J]. Exp. Mech. 1999, 39: 202–209.

DOI: 10.1007/bf02323553

Google Scholar

[5] Hang-Yin Ling, Kin-Tak Lau, Wei Jin, Kok-Cheung Chan. Characterization of dynamic strain measurement using reflection spectrum from a fiber Bragg grating[J]. Optics Communications. 2007, 270(1): 25-30.

DOI: 10.1016/j.optcom.2006.08.032

Google Scholar

[6] Jun He, Fang Li, Lei Feng, Hao Xiao, Yuliang Liu. Elimination of environmental noise in interferometric wavelength shift demodulation for dynamic fiber Bragg grating sensor array. Optics Communications, 2009, 282(14): 2836-2840.

DOI: 10.1016/j.optcom.2009.04.010

Google Scholar