Bragg grating extensometer rods (BGX) for geotechnical strain measurements

Cornelia Schmidt-Hattenberger; Gunter Borm

doi:10.1117/12.309676

18 June 1998 Bragg grating extensometer rods (BGX) for geotechnical strain measurements

Cornelia Schmidt-Hattenberger, Gunter Borm

Proceedings Volume 3483, European Workshop on Optical Fibre Sensors; (1998) https://doi.org/10.1117/12.309676
Event: European Workshop on Optical Fibre Sensors, 1998, Peebles, Scotland, United Kingdom

Abstract

We report on a new type of optical extensometer for strain measurement in geotechnical and civil engineering applications. The system key elements are Fiber Bragg Gratings (FBG) embedded in glassfiber reinforced polymer (GRP) rockbolts. In order to monitor rock deformations in tunnels, a prototype sensor rockbolt was designed. First measurements have been made to demonstrate the characteristics of the sensor system.

Citation Download Citation

Cornelia Schmidt-Hattenberger and Gunter Borm "Bragg grating extensometer rods (BGX) for geotechnical strain measurements", Proc. SPIE 3483, European Workshop on Optical Fibre Sensors, (18 June 1998); https://doi.org/10.1117/12.309676

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