Multiplexed measurements of strain using short- and long-gauge length sensors

Harald Geiger; Ming Gang Xu; John P. Dakin; Nicholas C. Eaton; P. J. Chivers

doi:10.1117/12.219628

15 September 1995 Multiplexed measurements of strain using short- and long-gauge length sensors

Harald Geiger, Ming Gang Xu, John P. Dakin, Nicholas C. Eaton, P. J. Chivers

Proceedings Volume 2507, Distributed and Multiplexed Fiber Optic Sensors V; (1995) https://doi.org/10.1117/12.219628
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

Abstract

The paper discusses two complimentary optical fiber sensing techniques which have been researched for structural monitoring applications. The short-gauge-length sensor system is based on fiber gratings and has achieved a strain resolution below 1 microstrain. The long-gauge-length sensor system has achieved 100 micron spatial resolution using a new OTDR technique. Results are presented for surface-mounted and embedded sensors. Both sensors systems can be multiplexed to make more efficient use of the interrogating unit. Their system designs should be capable of being developed to meet real engineering applications.

Citation Download Citation

Harald Geiger, Ming Gang Xu, John P. Dakin, Nicholas C. Eaton, and P. J. Chivers "Multiplexed measurements of strain using short- and long-gauge length sensors", Proc. SPIE 2507, Distributed and Multiplexed Fiber Optic Sensors V, (15 September 1995); https://doi.org/10.1117/12.219628

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