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Proceedings Paper

Thermal compensation of Bragg grating for structural health monitoring
Author(s): Rupali Suresh; Swee Chuan Tjin; Pilate Moyo; James M. W. Brownjohn
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Paper Abstract

In recent years, fiber optic sensors have been used for structural health monitoring because of the advantages they have over conventional strain gauges, such as multiplexing capability and immunity to electromagnetic interference (EMI). In addition, they have ability to monitor multiple parameters simultaneously, which is of significant benefit to researchers. However, this diverse sensitivity can cause "cross coupling" leading to imprecision in measurement. In this paper, we report our results on the development and testing of a temperature compensated fiber Bragg grating strain sensor. Results show that the proposed sensor structure can be used to effectively compensate for temperature variations in strain measurement.

Paper Details

Date Published: 13 November 2002
PDF: 8 pages
Proc. SPIE 4934, Smart Materials II, (13 November 2002); doi: 10.1117/12.480372
Show Author Affiliations
Rupali Suresh, Nanyang Technological Univ. (Singapore)
Swee Chuan Tjin, Nanyang Technological Univ. (Singapore)
Pilate Moyo, Nanyang Technological Univ. (Singapore)
James M. W. Brownjohn, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 4934:
Smart Materials II
Alan R. Wilson, Editor(s)

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