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

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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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 characterizing 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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsHypolito J. Kalinowski, José Luís Fabris, Wojtek J. Bock
Publication statusPublished - 2015
Event24th International Conference on Optical Fibre Sensors - Brazil, Curitiba, Brazil
Duration: 28 Sep 20152 Oct 2015


Conference24th International Conference on Optical Fibre Sensors


  • fibre bragg gratings
  • prestress monitoring
  • structural health monitoring
  • temperature calibration

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