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Proceedings Paper

Strain monitoring in steel rock bolts using FBG sensor arrays
Author(s): Martin Schroeck; Wolfgang Ecke; Andrea Graupner
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Paper Abstract

Rock bolts replace timber sets and steel arcs in securing the structural stability of underground cavities in order to reduce the volume of excavation. Rock bolts used in the mining industry are made of steel allowing up to 20% relative elongation of the bolt. Strain measurements using Fiber-Bragg-Grating (FBG) are limited to relative strains in the order of 1%. In order to allow measurements of up to 20% relative strain, special arrangements of the FBG sensors had to be found to extend their measuring range.

Paper Details

Date Published: 31 August 2000
PDF: 7 pages
Proc. SPIE 4074, Applications of Optical Fiber Sensors, (31 August 2000); doi: 10.1117/12.397895
Show Author Affiliations
Martin Schroeck, Institute for Physical High-Technology (Germany)
Wolfgang Ecke, Institute for Physical High-Technology (Germany)
Andrea Graupner, GESO GmbH (Germany)

Published in SPIE Proceedings Vol. 4074:
Applications of Optical Fiber Sensors
Alan J. Rogers, Editor(s)

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