Deformation monitoring in prestressing tendons using fibre Bragg gratings encapsulated in metallic packages

Grzegorz Fusiek; Marcus Perry; Pawel Niewczas; Michael Johnston

doi:10.1117/12.2059649

2 June 2014 Deformation monitoring in prestressing tendons using fibre Bragg gratings encapsulated in metallic packages

Grzegorz Fusiek, Marcus Perry, Pawel Niewczas, Michael Johnston

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 9157A6 (2014) https://doi.org/10.1117/12.2059649
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

An investigation into the capability of deformation monitoring using fibre Bragg gratings encapsulated in metallic packages is presented in the paper. The proposed approach relies on a grating inscription into a metal coated fibre and brazing the fibre into a metal capillary using induction heating. A metal rod instrumented with encapsulated FBG strain and temperature sensors is placed in an electromechanical tester and stressed up 80 % of its ultimate tensile strength. It is demonstrated through a 60 h experiment that the sensors are capable of real-time deformation monitoring.

Citation Download Citation

Grzegorz Fusiek, Marcus Perry, Pawel Niewczas, and Michael Johnston "Deformation monitoring in prestressing tendons using fibre Bragg gratings encapsulated in metallic packages", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157A6 (2 June 2014); https://doi.org/10.1117/12.2059649

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