A hybrid fiber-optic sensor system for condition monitoring of large scale wind turbine blades

Dae-gil Kim; Hyunjin Kim; Umesh Sampath; Minho Song

doi:10.1117/12.2184460

1 July 2015 A hybrid fiber-optic sensor system for condition monitoring of large scale wind turbine blades

Dae-gil Kim, Hyunjin Kim, Umesh Sampath, Minho Song

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 96550N (2015) https://doi.org/10.1117/12.2184460
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

A hybrid fiber-optic sensor system which combines fiber Bragg grating (FBG) sensors and a Michelson interferometer is suggested for condition monitoring uses of large scale wind turbine blades. The system uses single broadband light source to address both sensors, which simplifies the optical setup and enhances the cost-effectiveness of condition monitoring system. An athermal-packaged FBG is used to supply quasi-coherent light for the Michelson interferometer demodulation. For the feasibility test, different profiles of test strain, temperature and vibration have been applied to test structures, and successfully reconstructed with the proposed sensor system.

Citation Download Citation

Dae-gil Kim, Hyunjin Kim, Umesh Sampath, and Minho Song "A hybrid fiber-optic sensor system for condition monitoring of large scale wind turbine blades", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96550N (1 July 2015); https://doi.org/10.1117/12.2184460

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