A nonmagnetic electrical conductor placed in time-varying external magnetic field. The eddy current density decreases exponentially as a function of increasing thickness of the conductor.
Schematic of eddy current imaging system.
Comparison of cantilever vibration amplitudes over copper and insulator at a frequency of . The waveform on copper has been slightly shifted in time to show the waveforms separately.
Eddy current force in the copper sample as a function of separation distance between the magnetic tip and the sample.
Vibration spectra of the cantilever showing multiple resonance peaks.
(a) Surface topography and (b) eddy current (relative electrical conductivity) images of Ti-6Al-4V sample. Scan size: . Frequency: .
Images and single-scan-line response signals from carbon nanofibers in an epoxy matrix. (a) Surface topography and (b) eddy current (relative electrical conductivity). Frequency: .
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