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Application in eddy current testing


Turbine flaw detectors used by smelters are a type of device similar to metal detectors that can automatically check for metal body damage.

Turbine flaw detectors used by smelters are a type of device similar to metal detectors that can automatically check for metal body damage. As the metal rod through the coil due to changes in permeability (when the metal eddy current), so the impedance changes. Depending on whether the metal is damaged or not, there is a slight difference in this impedance. Flaw detector is the instrument to detect this difference.