The use of fibre Bragg gratings to detect ultrasound in anisotropic materials

Graham Thursby, Brian Culshaw, Yakov Botsev, Eyal Arad, Roman Zeyde, Moshe Tur, Iddo Kressel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In previous work we have described the detection and location of damage in isotropic materials using fibre Bragg gratings rosettes to directionally detect Lamb waves. To extend this technique to composite materials it is necessary to understand the propagation characteristics of ultrasound in these materials as a function of their orientation with respect to the ply, and also the directional response of fibre Bragg gratings to them. Finite element modeling of Lamb wave propagation in a 0°, 90° carbon fibre plate is described, as are experiments to detect these waves for various orientations of the source and alignments of the FBG transducers. Results of the experiments are interpreted with respect to predictions from the FE modeling and are shown to give good qualitative agreement.

Original languageEnglish
Title of host publicationSmart Sensor Phenomena, Technology, Networks, and Systems 2008
DOIs
StatePublished - 2008
EventSmart Sensor Phenomena, Technology, Networks, and Systems 2008 - San Diego, CA, United States
Duration: 10 Mar 200812 Mar 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6933
ISSN (Print)0277-786X

Conference

ConferenceSmart Sensor Phenomena, Technology, Networks, and Systems 2008
Country/TerritoryUnited States
CitySan Diego, CA
Period10/03/0812/03/08

Keywords

  • Carbon fibre composites
  • Damage detection
  • Fibre Bragg gratings
  • Finite element modeling
  • Lamb waves

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