Long-gage fiber optic Bragg grating strain sensors to monitor civil structures

Whitten L. Schulz; Joel Pascal Conte; Eric Udd

doi:10.1117/12.434156

30 July 2001 Long-gage fiber optic Bragg grating strain sensors to monitor civil structures

Whitten L. Schulz, Joel Pascal Conte, Eric Udd

Proceedings Volume 4330, Smart Structures and Materials 2001: Smart Systems for Bridges, Structures, and Highways; (2001) https://doi.org/10.1117/12.434156
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

Fiber optic Bragg gratings packaged in long gage configurations are being used to measure static and dynamic macro-strains in structures and structural models to monitor structural health and detect and identify macro-damage incurred from a seismic event. These long gage sensors are being used to experimentally verify analytical models of small-scale structural models in their pre- and post-damage states using system identification techniques. This fiber optic deformation measurement system could play a significant role in monitoring/recording with a higher level of completeness the actual seismic response of structures and in non-destructive seismic damage assessment techniques based on dynamic signature analysis. This new sensor technology will enable field measurements of the response of real structures to real earthquakes with the same or higher level of detail/resolution as currently in structural testing under controlled laboratory conditions.

Citation Download Citation

Whitten L. Schulz, Joel Pascal Conte, and Eric Udd "Long-gage fiber optic Bragg grating strain sensors to monitor civil structures", Proc. SPIE 4330, Smart Structures and Materials 2001: Smart Systems for Bridges, Structures, and Highways, (30 July 2001); https://doi.org/10.1117/12.434156

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