Eddy Current Technology

Induce high frequency electromagnetic field. Eddy Currents will
flow in the test piece. Uniform field is modified as defects pass.

 

• Can be used in any electrical conductive material.

• Best for small OD, thin wall tubes. (2”OD and less, 3/16” wall max)

• Good for high mill speeds, test at higher temperatures

• Disadvantages include sensitivity to material geometry & property is not related to defects and poor depth penetration.

• Ferromagnetic materials require magnetic saturators.

 

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System information

• In ferromagnetic material, the material must be magnetically saturated to allow for

• penetration of the Eddy Currents into the material

• Parameters to set up = Current, Frequency, Gain and Rotation

• On-Line or Off-Line systems available (On-Line: prior to cutting, Off-Line: after cutting)

• Weld Line or Full Body Inspection systems available

• Minimum OD = 0.500” (12,7mm) to Maximum OD 6.500”

• Maximum recommended wall thickness = 0.188” (4,8mm)

• Maximum tested Speed 300ft/min (91m/min)

• Calibrated with 1/13” and 1/8” drilled holes

• Recommended for inspection of thin wall material only