Method and circuitry for removing circling drifts in NDT/NDI measurement display
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United States of America Patent
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May 24, 2016
Grant Date -
Mar 26, 2015
app pub date -
Sep 25, 2013
filing date -
Sep 25, 2013
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Abstract
Disclosed is a method and an apparatus for removing circling drifts on the display of the measured eddy current or other continuous waves. The circling dot which is supposed to be a static dot can obscure information required by the operator to judge if a small defect is present. Embodiments of presently disclosed harmonic rejection filters are tunable and employed to effectively abate or eliminate signals with frequencies that are multiples of operating frequencies, resulting in the removal of the circling effects on the display.
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