Question

Why penetration depth increases on decreasing permeability in ndt?

Answer 1

Here is your answer ⤵⤵⤵⤵⤵

The depth that eddy currentspenetrate into a material is affected by the frequency of the excitation current and the electrical conductivity and magnetic permeability of the specimen. The depth of penetration decreases with increasing frequency and increasing conductivity and magnetic permeability.


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