Multi-point strain measurement of composite-bonded concrete materials with a RF-band FMCW multiplexed FBG sensor array

Peter K.C. Chan, Wei Jin, K. T. Lau, Li Min Zhou, M. S. Demokan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

31 Citations (Scopus)

Abstract

We report the use of fiber Bragg grating (FBG) sensors for strain measurement in a rectangular composite-bonded concrete beam Three FBGs are multiplexed by using a frequency modulated continuous wave (FMCW) technique in the RF-band and embedded at three different locations at the interface between the composite reinforcement and surfaces of the concrete beam specimen. Strain measurements were conducted with the concrete beam specimen subjected to a three-point bending test. The strains measured from the FBG sensors are compared with that from the external bonded strain gauges.
Original languageEnglish
Pages (from-to)19-25
Number of pages7
JournalSensors and Actuators, A: Physical
Volume87
Issue number1-2
DOIs
Publication statusPublished - 1 Dec 2000

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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