Share Email Print
cover

Proceedings Paper

Vibration measurement of smart composite structures using a new intensity-modulated optical fiber sensor
Author(s): Jinsong Leng; Anand Krishna Asundi; Shanyi Du; Danfu Wang
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A new intensity modulated optical fiber vibration sensor has been employed to monitor the vibration signal in the smart composite structures in this paper. The advantages of this sensor ar the lower cost and the easy-to-use system. The sensor were fabricated using conventional 50/125 step-index multimode optical fibers and the custom-drawn epoxy resin capillary tube. The construction of this sensor is like the extrinsic Fabry-Perot interferometric. A face coupling theory of the intensity modulated fiber optic vibration sensor is developed. This optical fiber sensor has been embedded in the end of the smart composite cantilevered beam. The static and dynamic characteristics of this optical fiber vibration sensor have been tested. At the same time, the compared test of this sensor with commercial piezoelectric transducer are also finished. The experimental results show that the new type of intensity modulated optical fiber vibration sensor has higher sensitivity and better dynamic and static properties. The spectrum response of this sensor are also agreeable to that of the commercial transducer.

Paper Details

Date Published: 3 February 1999
PDF: 6 pages
Proc. SPIE 3541, Fiber Optic and Laser Sensors and Applications; Including Distributed and Multiplexed Fiber Optic Sensors VII, (3 February 1999); doi: 10.1117/12.339081
Show Author Affiliations
Jinsong Leng, Nanyang Technological Univ. (Singapore) and Harbin Institute of Technology (United Kingdom)
Anand Krishna Asundi, Nanyang Technological Univ. (Singapore)
Shanyi Du, Harbin Institute of Technology (China)
Danfu Wang, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 3541:
Fiber Optic and Laser Sensors and Applications; Including Distributed and Multiplexed Fiber Optic Sensors VII
Alan D. Kersey; John P. Dakin; John P. Dakin; Alan D. Kersey; Dilip K. Paul, Editor(s)

© SPIE. Terms of Use
Back to Top