Eddy current detection uplift shake compensation method

Eddy current detection uplift shake compensation method

  • CN 106,404,899 A
  • Filed: 08/29/2016
  • Published: 02/15/2017
  • Est. Priority Date: 08/29/2016
  • Status: Active Application
First Claim
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1. a kind of EDDY CURRENT lift-off sway compensating method it is characterised in that:

  • Eddy current testing instrument adopt main inspection pumping signal with auxiliaryHelp pumping signal to encourage same test coil of eddy current, wherein main inspection pumping signal excitation test coil of eddy current detection material simultaneouslyDefect, auxiliary excitation signal encourages test coil of eddy current to detect the lift-off of test coil of eddy current or rock, and eddy current testing instrument setsSignal threshold values is rocked in effective detection lift-off, and effective detection lift-off is rocked signal threshold values and determined according to detection sensitivity;

    EDDY CURRENTDuring coil scanning, when lift-off or rocking situation, main inspection pumping signal encourages the material of test coil of eddy current detectionInterference signal will be rocked containing lift-off, when auxiliary excitation signal encourages test coil of eddy current to detect the lift-off obtaining in flaw indicationWhen rocking signal and exceeding the effective detection lift-off of setting and rock signal threshold values, eddy current testing instrument is reported to the police, and judges now main inspection excitationSignal encourages the fault in material invalidating signal of test coil of eddy current detection.

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