Skin depth (standard)
Skin depth δ characterises how quickly eddy currents decay into a conductor. The classical approximation is δ = √(2 / (ωμσ)), with angular frequency ω, permeability μ, and conductivity σ.
Enter frequency in Hz and material properties in SI units. This is a simplified model; surface roughness, lift-off, and probe geometry dominate real ET responses.
δ (mm): —
Disclaimer.
Results are indicative only. Verify against applicable standards and your employer’s procedures before use on safety-critical work.
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