6 September 2017 A fiber-optic ice detection system for large-scale wind turbine blades
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Icing causes substantial problems in the integrity of large-scale wind turbines. In this work, a fiber-optic sensor system for detection of icing with an arrayed waveguide grating is presented. The sensor system detects Fresnel reflections from the ends of the fibers. The transition in Fresnel reflection due to icing gives peculiar intensity variations, which categorizes the ice, the water, and the air medium on the wind turbine blades. From the experimental results, with the proposed sensor system, the formation of icing conditions and thickness of ice were identified successfully in real time.
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Dae-gil Kim, Dae-gil Kim, Umesh Sampath, Umesh Sampath, Hyunjin Kim, Hyunjin Kim, Minho Song, Minho Song, } "A fiber-optic ice detection system for large-scale wind turbine blades", Proc. SPIE 10374, Optical Modeling and Performance Predictions IX, 103740B (6 September 2017); doi: 10.1117/12.2273664; https://doi.org/10.1117/12.2273664

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