METHOD FOR ANALYZING MEASURED SIGNAL IN RESONANCE FATIGUE TEST AND APPARATUS USING THE SAME
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United States of America Patent
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Apr 21, 2016
app pub date -
Oct 16, 2015
filing date -
Oct 17, 2014
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Abstract
A method and apparatus for analyzing a measured signal are provided in a resonance fatigue test that causes a complicated behavior and nonsymmetrical bending of a test article such as a wind turbine blade due to a coupling effect. In the method, a processor of the apparatus receives the measured signal from each of at least two measurement sensors attached to the test article and then extracts a moment load from the received measured signal by considering all of a first measured value in a first direction due to a first direction load, a second measured value in a second direction due to the first direction load, a third measured value in the first direction due to a second direction load, and a fourth measured value in the second direction due to the second direction load.
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