Electromagnetic Testing Eddy Current in Brief

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Figure 6. Typical response for samples of different conductivity Charlie Chong/ Fion Zhang
A differential probe consists of two coils sensing different areas of the material being tested, which are linked electrically in opposition. The circuit will become unbalanced when one of the coils encounters a change in impedance. The response to this change in impedance creates what is known as a Lissajous figure. In general, the closer the element spacing the wider the "loop" in the signal. Differential probes are relatively unaffected by lift-off as long as the elements are balanced, and are suited for detection of small defects. Keywords: Differential probes are relatively unaffected by lift-off as long as the elements are balanced Charlie Chong/ Fion Zhang
Page 1 and 2: Electromagnetic Testing Eddy Curren
Page 3 and 4: Figure 1. Schematic of Eddy Current
Page 5 and 6: As a result of eddy currents, a sec
Page 7 and 8: How eddy currents are created and s
Page 9 and 10: Conductivity is sensitive to cracks
Page 11 and 12: How do we measure eddy current resp
Page 13 and 14: Thickness changes in a sample can c
Page 15: There are two basic types of coil p
Page 19 and 20: Lift Off Lift-off from paint, coati
Page 21 and 22: Charlie https://www.yumpu.com/en/br
Page 23: Good Luck! Charlie Chong/ Fion Zhan

Electromagnetic Testing Eddy Current in Brief

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