ACFM (Alternating Current Field Measurement)

Alternating Current Field Measurement (ACFM) is an electromagnetic technique for Non Destructive Testing¬†detection and sizing of surface breaking cracks. It was derived from the methods used in Eddy Current Testing¬†and works on all metals, ferrous or non-ferrous. Since it doesn’t require direct electrical contact with the surface it can work through coatings such as paint or rust.

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