Methods and apparatus for vibration testing using multiple sine sweep excitation
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United States of America Patent
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Oct 9, 2012
Grant Date -
Jun 23, 2011
app pub date -
Jul 12, 2010
filing date -
Jul 15, 2009
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Abstract
A multi-sine vibration testing method includes coupling a vibratory excitation source and a sensor to a test structure, then providing a reference signal to the excitation source, wherein the reference signal comprises a first sinusoidal waveform having a first frequency and a second sinusoidal waveform having a second frequency different from the first frequency. The first frequency and the second frequency each sweep between a corresponding start value and a corresponding end value, and the frequency response is measured from each of the sensors while providing the reference signal.
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