Application of Automatic Non-contact Electrical Conductivity Scanning Technique in Characterization of Rolled Aluminum Plates used in Aerospace Applications

The use of eddy current techniques for the measurement of electrical conductivity has long been a major test requirement for rolled aluminum plates destined for aerospace applications. The major reason for conductivity testing is to detect “soft spots” that may occur as a result of improper heat treatment or macro-segregations initiated during casting process.


 1. Blitz J. “Electrical, Magnetic, and Visual Methods of Testing Materials ” Vol. 2 “Eddy Current Methods”

Butterworth, 1969.

2.  ASTM E1004-09 “Standard Test Method for Determining Electrical Conductivity Using the

Electromagnetic (Eddy Current) Method”

 3. MIL-STD-1537C “Test method Standard for Electrical Conductivity test for Verification of Heat

Treatment of Aluminum Alloys Eddy Current Method” , June 25 2002

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