METHOD AND APPARATUS OF MOMENT CALIBRATION FOR RESONANCE FATIGUE TEST
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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 moment calibration method and apparatus are provided for a resonance fatigue test of a test article. In the moment calibration method, when a load applying unit of the apparatus applies a static load to the test article in a first direction so as to cause bending of the test article, a processor of the apparatus obtains a first measured value from a physical quantity measured by at least one measurement sensor attached to the test article. Also, when the load applying unit applies a static load to the test article in a second direction different from the first direction so as to cause bending of the test article, the processor obtains a second measured value from a physical quantity measured by the measurement sensor. Then the processor calculates a correlation between the first measured value, the second measured value, and moment values respectively calculated from the static loads applied in the first and second directions. By considering a dual-axis load state, the moment calibration method can obtain reliable calibration results exactly matching with a real fatigue test.
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