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Proceedings Paper

Deformation monitoring in prestressing tendons using fibre Bragg gratings encapsulated in metallic packages
Author(s): Grzegorz Fusiek; Marcus Perry; Pawel Niewczas; Michael Johnston
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Paper 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.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157A6 (2 June 2014); doi: 10.1117/12.2059649
Show Author Affiliations
Grzegorz Fusiek, Univ. of Strathclyde (United Kingdom)
Marcus Perry, Univ. of Strathclyde (United Kingdom)
Pawel Niewczas, Univ. of Strathclyde (United Kingdom)
Michael Johnston, EDF Energy plc (United Kingdom)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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