Non-Destructive Inspection (NDI) using eddy current

[midsidenode]

I am no NDT engineer. I only know enough to cause problems. My question is related to using an eddy current inspection technique to inspect for cracks within a hole. The technique involves using a rotating eddy current probe and the part to be inspected is made from aluminum 2014-T651. We have reason to believe that the inspection standard was mistakenly made from either 6061-T651 or 7075-T651. Will the different types of aluminum (between the part and standard) cause us problems?

thanks,

 

[EdStainless]

It may impact resolution, but you should still have good detection.
You can look up the electrical resistivity of the alloys to see how similar they are.


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P.E. Metallurgy, Plymouth Tube

 

[MagBen]

I would not use a standard made from a different material. Not only the resistivity can be different, but the grain size, and even the condition can affect eddy current flow.