Thermal compensation of Bragg grating for structural health monitoring

Rupali Suresh; Swee Chuan Tjin; Pilate Moyo; James M. W. Brownjohn

doi:10.1117/12.480372

13 November 2002 Thermal compensation of Bragg grating for structural health monitoring

Rupali Suresh, Swee Chuan Tjin, Pilate Moyo, James M. W. Brownjohn

Proceedings Volume 4934, Smart Materials II; (2002) https://doi.org/10.1117/12.480372
Event: SPIE's International Symposium on Smart Materials, Nano-, and Micro- Smart Systems, 2002, Melbourne, Australia

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.

Citation Download Citation

Rupali Suresh, Swee Chuan Tjin, Pilate Moyo, and James M. W. Brownjohn "Thermal compensation of Bragg grating for structural health monitoring", Proc. SPIE 4934, Smart Materials II, (13 November 2002); https://doi.org/10.1117/12.480372

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