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Proceedings Paper

An intensity-based fiber optic vibration sensor
Author(s): Crispin T. M. Doyle; Gerard Franklyn Fernando
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Paper Abstract

A compact intensity-based fiber-optic vibration sensor, suitable for embedment or surface- mounting has been designed and evaluated. It employs simple and inexpensive instrumentation, and is shown to be responsive to frequencies in the range of 100 - 10,000 Hz. It was mounted onto the surface of specimens of carbon fiber reinforced composite, and proved to be capable of differentiating between the vibrational responses of damaged and undamaged panels. An attempt was made to characterize the sensor's output signal by FFT processing. The sensor also survived embedment in a cementitious composite panel. It is proposed that the device can be used as the sensing element of a real-time mechanical-health- monitoring system.

Paper Details

Date Published: 30 May 1996
PDF: 9 pages
Proc. SPIE 2718, Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation, (30 May 1996); doi: 10.1117/12.240850
Show Author Affiliations
Crispin T. M. Doyle, Brunel Univ. (United Kingdom)
Gerard Franklyn Fernando, Brunel Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 2718:
Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation
Kent A. Murphy; Dryver R. Huston, Editor(s)

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