A comparison of brazed metal and epoxied fibre Bragg grating strain sensors under high strain regimes

I. Mckeeman; P. Niewczas; S. Khan

doi:10.1117/12.2264997

23 April 2017 A comparison of brazed metal and epoxied fibre Bragg grating strain sensors under high strain regimes

I. Mckeeman, P. Niewczas, S. Khan

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103233E (2017) https://doi.org/10.1117/12.2264997
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

Three different fibre Bragg grating strain sensors were tested for their suitability for measuring high strain. The sensor types were: a bare epoxied fibre Bragg grating, a standard fibre Bragg grating epoxied into a metal capillary and, finally, a metal coated fibre Bragg grating brazed into a metal capillary. The sensors were calibrated on a steel specimen up to 1400MPa (equivalent to 7.3mε). The results show that the bare epoxied Bragg grating and the metal packaged grating are suitable for measuring strains of this level.

Citation Download Citation

I. Mckeeman, P. Niewczas, and S. Khan "A comparison of brazed metal and epoxied fibre Bragg grating strain sensors under high strain regimes", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103233E (23 April 2017); https://doi.org/10.1117/12.2264997

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