Vibration monitoring of carbon fiber composites by multiple fiber optic sensors

Massimo Olivero, Guido Perrone, Alberto Vallan, Wei Chen, Daniele Tosi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This work presents the comparison between the fiber Bragg grating technology and a vibration-measurement technique based on the detection of polarization rotation (polarimetric sensor) in a standard optical fiber, applied to the dynamic structural monitoring of carbon reinforced composites for the automotive industry. A carbon reinforced composite test plate in a 4-layer configuration was equipped with fiber Bragg gratings and polarimetric fiber sensors, then it was mechanically stressed by static and dynamic loads while monitoring the sensors response. The fiber Bragg grating setup exhibited 1.15±0.0016 pm/kg static load response and reproduced dynamic excitation with 0.1% frequency uncertainty, while the polarimetric sensing system exhibited a sensitivity of 1.74±0.001 mV/kg and reproduced the dynamic excitation with 0.5% frequency uncertainty. It is shown that the polarimetric sensor technology represents a cheap yet efficient alternative to the fiber Bragg grating sensors in the case of vibration-monitoring of small structures at high frequency.

Original languageEnglish
Title of host publicationOptical Sensing and Detection III
ISBN (Print)9781628410891
Publication statusPublished - Jan 1 2014
Externally publishedYes
EventOptical Sensing and Detection III - Brussels, Belgium
Duration: Apr 14 2014Apr 17 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherOptical Sensing and Detection III


  • Carbon Fiber Composite (CFC)
  • Fiber Bragg grating (FBG)
  • Polarimetric sensors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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