Physics · Non-Destructive Testing
Which underlying physical principle is exploited in Electromagnetic Eddy Current Testing (ECT)?
- 1Exothermic chemical reactions occurring between catalytic agents on the metal surface
- 2Induction of circulating electrical currents in a conductor due to time-varying magnetic fields✓
- 3Micro-structural resistance of a crystal lattice against plastic mechanical indentation
- 4Acoustic impedance matching and sound wave propagation velocity
Correct answer
Induction of circulating electrical currents in a conductor due to time-varying magnetic fields
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