In-situ temperature calibration procedure for temperature and strain fibre Bragg grating sensors for monitoring pre-stressing strands

I. Mckeeman; G. Fusiek; M. Perry; P. Niewczas; M. Johnston

doi:10.1117/12.2193193

28 September 2015 In-situ temperature calibration procedure for temperature and strain fibre Bragg grating sensors for monitoring pre-stressing strands

I. Mckeeman, G. Fusiek, M. Perry, P. Niewczas, M. Johnston

Author Affiliations +

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96345I (2015) https://doi.org/10.1117/12.2193193
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

In this work, we demonstrate active and passive methods for in-situ temperature calibration of fibre Bragg grating strain and temperature sensors. The method is suitable for characterising sensors which are already attached to the steel reinforcements of civil structures. The proposed method, which involves the use of active induction heating or passive room temperature fluctuations, can be implemented using portable equipment, is time efficient, and can be used to calibrate attached sensors on-site, rather than in lab conditions. Preliminary results of the induction heating calibration show good agreement with pre-calibrated temperature sensors. In-situ calibration of fibre strain sensors, attached to a prestressing strand is also successfully carried out.

Citation Download Citation

I. Mckeeman, G. Fusiek, M. Perry, P. Niewczas, and M. Johnston "In-situ temperature calibration procedure for temperature and strain fibre Bragg grating sensors for monitoring pre-stressing strands", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96345I (28 September 2015); https://doi.org/10.1117/12.2193193

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