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Simultaneous strain, temperature and vibration measurement using a multiplexed FBG/FFPI sensor system

Rao, Yun Jiang and Henderson, Philip J. and Jackson, David A. and Zhang, Lin and Bennion, Ian (1998) Simultaneous strain, temperature and vibration measurement using a multiplexed FBG/FFPI sensor system. In: Claus, Richard O. and Spillman, William B., eds. Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials. Proceedings of SPIE . SPIE, Bellingham, Washington, pp. 432-437. ISBN 0-8194-2774-8. (doi:10.1117/12.316989) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1117/12.316989

Abstract

A novel technique for simultaneous measurement of static-strain, temperature and vibration for structural health monitoring is demonstrated using a wavelength-multiplexed in-fibre-Bragg-grating (FBG)/fibre-Fabry-Perot-interferometer (FFPI) sensor system, which combines the advantages of both FBGs and fibre-optic low-coherence interferometry. An experimental system, including two Im long FFPIs with central wavelengths of 1531nm and 1534nm and a FBG with a central wavelength of 1555nm, is demonstrated. A static strain resolution of better than 1 mu epsilon, over a range of 5m epsilon, a temperature sensitivity of 0.1 degrees C and a vibration amplitude sensitivity of better than 1nm/root Hz have been obtained. The system cross-talk measured is less than -50dB.

Item Type: Book section
DOI/Identification number: 10.1117/12.316989
Additional information: Proceedings paper
Uncontrolled keywords: optical fibre sensors; interferometry; in-fibre Bragg gratings; strain gauges
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics (see also: telecommunications)
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK8300 Optoelectronic devices
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Tara Puri
Date Deposited: 07 Jul 2009 10:58 UTC
Last Modified: 05 Jul 2019 14:25 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/17013 (The current URI for this page, for reference purposes)
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