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FBG-based non-contact vibration measurement and experimental study

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International Journal of Precision Engineering and Manufacturing Aims and scope Submit manuscript

Abstract

Rotating shaft vibration measurement has important significance for condition monitoring and fault diagnosis of large rotating machinery system. This paper presents a novel non contact radial vibration displacement measurement method based on fiber Bragg grating (FBG) sensing technology and introduces the principle and structure of the vibration sensor. The static displacement calibration experiment was carried out to determine linear range and sensitivity of the sensor. Finally, the sensor was used in the dynamic test of a rotating machinery experiment platform and the results show that the measurement method is feasible.

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Abbreviations

λ B :

central wavelength of FBG

Λ :

grating period

n :

effective index of FBG

Δλ B :

FBG wavelength shift

ɛ :

strain

R :

diaphragm radius

h :

diaphragm thickness

r 0 :

radius of a diaphragm hard core

ω :

diaphragm deflection

F :

magnetic force

E :

elastic modulus

µ:

poisson ratio

l :

length of fiber between two fixing points

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Authors and Affiliations

  1. School of Mechanical Engineering, Wuhan University of Technology, Wuhan, China, 430070

    Li Wei, Zu-De Zhou, Jun Huang & Yue-Gang Tan

Authors
  1. Li Wei
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  2. Zu-De Zhou
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  3. Jun Huang
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  4. Yue-Gang Tan
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Correspondence to Li Wei.

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Wei, L., Zhou, ZD., Huang, J. et al. FBG-based non-contact vibration measurement and experimental study. Int. J. Precis. Eng. Manuf. 14, 1577–1581 (2013). https://doi.org/10.1007/s12541-013-0213-9

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  • DOI: https://doi.org/10.1007/s12541-013-0213-9

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