Electromagnetic Testing Eddy Current in Brief
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Lift Off<br />
Lift-off from pa<strong>in</strong>t, coat<strong>in</strong>gs, etc. can cause variations that may mask the<br />
defects of <strong>in</strong>terest. Lift-off may also be useful <strong>in</strong> determ<strong>in</strong><strong>in</strong>g the thickness of<br />
nonconductive coat<strong>in</strong>gs on a conductive component.<br />
Figure 8. Response of a probe due to lift off.<br />
http://www.cnde.iastate.edu/faa-casr/eng<strong>in</strong>eers/Support<strong>in</strong>g%20Info/Support<strong>in</strong>g%20Info%20Pages/<strong>Eddy</strong>%20Pages/<strong>Eddy</strong>-pr<strong>in</strong>ciples.html<br />
Charlie Chong/ Fion Zhang
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