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Proceedings Paper

Measurement of flow-induced vibrations using a fiber Bragg grating sensor
Author(s): Wei Jin; Y. Zhou; Peter K. C. Chan; H. G. Xu
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Paper Abstract

A fiber-optic bragg grating sensor for flow-induced vibration measurement is described. The sensor is based on monitoring shift in the Bragg wavelength of a fiber Bragg grating. the fiber 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 then natural frequency of the fluid-structure system and the vortex shedding frequency are consistent with the result obtained from a laser vibrometer. Fiber Bragg grating sensors have potential applications in the study of fluid-structure interactions of cylinder arrays in a crossflow.

Paper Details

Date Published: 11 January 1999
PDF: 12 pages
Proc. SPIE 3538, Process Monitoring with Optical Fibers and Harsh Environment Sensors, (11 January 1999); doi: 10.1117/12.335737
Show Author Affiliations
Wei Jin, Hong Kong Polytechnic Univ. (Hong Kong)
Y. Zhou, Hong Kong Polytechnic Univ. (Hong Kong)
Peter K. C. Chan, Hong Kong Polytechnic Univ. (Hong Kong)
H. G. Xu, Hong Kong Polytechnic Univ. (Hong Kong)


Published in SPIE Proceedings Vol. 3538:
Process Monitoring with Optical Fibers and Harsh Environment Sensors
Michael A. Marcus; Michael A. Marcus; Anbo Wang, Editor(s)

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