A laser-based fiber bragg grating ultrasonic sensing system for structural health monitoring

Yang Zhao, Yinian Zhu, Maodan Yuan, Junfang Wang, Songye Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)

Abstract

Fiber Bragg gratings (FBGs) have being seen for a growing application in the field of structural health monitoring (SHM) because of their lightweight features. This letter introduces an adaptive SHM sensing system based on the ultrasonic guided wave (UGW) and FBG sensor technology. First, the capability of the proposed SHM sensing system used to detect UGW is demonstrated by the frequency detection of Rayleigh wave that is generated by the piezoelectric transducers with a function generator. Furthermore, a nanosecond pulse laser is utilized to generate Lamb wave on an aluminum plate, while the SHM sensing system is employed to detect the wave in a long distance. Finally, the SHM sensing system is used to locate the source of Rayleigh wave that is created by a pulsed laser. The experiment results show the proposed SHM sensing system is capable of localizing and monitoring the UGW by using four FBG cascaded on a loaded aluminum plate.
Original languageEnglish
Pages (from-to)2573-2576
Number of pages4
JournalIEEE Photonics Technology Letters
Volume28
Issue number22
DOIs
Publication statusPublished - 15 Nov 2016

Keywords

  • All-fiber adaptive sensing
  • fiber Bragg grating sensors
  • laser ultrasonic
  • structural health monitoring

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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