Simultaneous measurement of physical parameters using FBGs embedded in unidirectional and bidirectional composite materials

Luis Costa, Matthieu Gresil, Orlando Frazão

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Abstract

A smart material using fibre Bragg gratings (FBGs) embedded into carbon fibre-reinforced polymer for simultaneous measurement of physical parameters was designed, tested, and validated. Two FBGs were embedded in different sections of the composite sample, one fully unidirectional and the other bidirectional, which produced different sensitivities for each FBG sensor. The composite structure was characterized for strain/temperature and curvature/temperature measurements. The experimental results were compared with and agreed with finite element simulations.

Original languageEnglish
Article number015007
Number of pages8
JournalSmart Materials and Structures
Volume25
Issue number1
DOIs
Publication statusPublished - Jan 2016
Externally publishedYes

Keywords

  • curvature
  • fiber Bragg gratings
  • optical sensors
  • SHM
  • strain
  • temperature

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