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Proceedings Paper

Fiber optic sensor protection system and its practical for structural integrity monitoring of concrete structures
Author(s): J. S. Leng; R. A. Barnes; A. Hameed; D. Winter; J. Tetlow; G. C. Mays; G. F. Fernando
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Paper Abstract

This paper is concerned with the design concepts, modelling and implementation of various fibre optic sensor protection systems for development in concrete structures. The design concepts of fibre optic sensor protection system and on-site requirements for surface-mounted and embedded optical fibre sensor in concrete structures have been addressed. The aspects of finite element (FE) modelling of selected sensor protection systems in terms of strain-transfer efficiency from the structure to the sensing region also been focused in this paper. Finally, the experimental validations of specified sensor protection system in concrete structures have been performed successfully. Protected Extrinsic Fabry-Perot Interferometric (EFPI) and Fibre Bragg Grating (FBG) sensors have been used to monitor the structural health status of plain and composite wrapped concrete cylinders. Results obtained indicate that the protection system for the sensors performs adequately in concrete environment and there is very good correlation between results obtained by the protected fibre optic sensors and conventional electrical resistance strain gauges.

Paper Details

Date Published: 17 May 2005
PDF: 12 pages
Proc. SPIE 5765, Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (17 May 2005); doi: 10.1117/12.598708
Show Author Affiliations
J. S. Leng, Harbin Institute of Technology (China)
R. A. Barnes, Cranfield Univ. (United Kingdom)
A. Hameed, Cranfield Univ. (United Kingdom)
D. Winter, Cranfield Univ. (United Kingdom)
J. Tetlow, Cranfield Univ. (United Kingdom)
G. C. Mays, Cranfield Univ. (United Kingdom)
G. F. Fernando, Cranfield Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 5765:
Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
Masayoshi Tomizuka, Editor(s)

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