Electromagnetic Testing Eddy Current in Brief
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Thickness changes <strong>in</strong> a sample can change the impedance response on an<br />
oscilloscope. Defects such as corrosion are found <strong>in</strong> this fashion.<br />
The th<strong>in</strong>ner the part the greater is<br />
the impedance (>R & >X L )<br />
Figure 4. Changes <strong>in</strong> conductivity curve due to th<strong>in</strong>n<strong>in</strong>g of a part<br />
Charlie Chong/ Fion Zhang
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