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Towards early ice detection on wind turbine blades using acoustic waves

Viktor Berbyuk (Institutionen för tillämpad mekanik, Dynamik ; Svenskt VindkraftsTekniskt Centrum (SWPTC)) ; Bo Peterson (Institutionen för tillämpad mekanik, Dynamik) ; Jan Möller (Institutionen för tillämpad mekanik)
Proc. of SPIE, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2014, H. Felix Wu; Tzu-Yang Yu; Andrew L. Gyekenyesi; Aaron A. Diaz; Peter J. Shull, San Diego, California, USA, March 09, 2014 (1996-756X). Vol. 9063 (2014), p. 90630F-1 - 90630F-11.
[Konferensbidrag, refereegranskat]

The study focuses on the early detection of ice using controlled acoustic waves propagating in the wind turbine blades. An experimental set-up with a cold climate chamber, a composite test object used in turbine blades and equipment for glaze and rime ice production has been developed. Controlled acoustic waves are generated by magnetostrictive Terfenol-D based actuator. The propagation of three orthogonally polarized acoustic waves was studied by means of 6 accelerometers positioned, 3 each, in 2 holders on the 8 m long composite test object. The results show that for the considered composite test object the formation of ice, the ice mass, icing areas and the temperature have a significant influence on controlled acoustic waves propagation w.r.t. Fourier transform, amplitude attenuation and RMS values as indicators concluding that the proposed acoustic wave technique is a promising approach for ice detection.

Nyckelord: Ice detection, controlled acoustic waves, composite material, rotor blade, wind turbine, magnetostrictive actuator



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Denna post skapades 2014-03-11. Senast ändrad 2015-12-17.
CPL Pubid: 194762

 

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