Measurement of flow-induced vibrations using a fibre Bragg grating sensor

Wei Jin, Y. Zhou, Peter K C Chan, H. G. Xu

Research output: Journal article publicationConference articleAcademic researchpeer-review

Abstract

A fibre-optic Bragg grating sensor for flow-induced vibration measurement is described. The sensor is based on monitoring shift in the Bragg wavelength of a fibre Bragg grating. The fibre Bragg grating, when bonded onto a structure, can measure local axial strain variation of the structure. The strain can be related to the structural bending displacement. Experiments were conducted to measure the flow-induced vibration of a cylinder in a crossflow. The measurement results in terms of the natural frequency of the fluid-structure system and the vortex shedding frequency are consistent with the results obtained from a laser vibrometer. Fibre Bragg grating sensors have potential applications in the study of fluid-structure interactions of cylinder arrays in a crossflow.
Original languageEnglish
Pages (from-to)124-135
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3538
Publication statusPublished - 1 Jan 1999
EventProceedings of the 1998 Process Monitoring with Optical Fibers and Harsh Environment Sensors - Boston, MA, United States
Duration: 1 Jan 1999 → …

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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