Calculation of the Eddy-Current Flow Around a Cylindrical Through-Hole in a Finite-Thickness Plate

Anastassios Skarlatos (1) , Theodoros Theodoulidis (2)

1 DISC - Département Imagerie et Simulation pour le Contrôle
2 MEANDER

A semianalytical solution to the eddy-current induction problem in a conducting, nonmagnetic plate near a cylindrical through-hole is derived by means of the second-order vector potential and the domain truncation technique. The construction of a solution, which simultaneously satisfies the field continuity across the cylindrical surface of the hole and the planar interfaces of the plate, proves to be a very challenging problem, and thus, a special superposition of partial subsolutions is proposed. The presented solution is part of a more general development aiming at the calculation of the probe interaction with material flaws located in the vicinity of the hole by means of the integral equation formalism. These tasks will be the subject of a future paper. The comparison of the semianalytical results against both finite-element simulations as well as experimental data demonstrates excellent agreement.

Keywords: Domain truncation; eddy-current testing (ECT); fastener inspection; impedance calculation; mode matching

Domains: Engineering Sciences [physics]

Anastassios Skarlatos, Theodoros Theodoulidis. Calculation of the Eddy-Current Flow Around a Cylindrical Through-Hole in a Finite-Thickness Plate. IEEE Transactions on Magnetics, 2015, 51, pp.1 - 7. ⟨10.1109/TMAG.2015.2426676⟩. ⟨cea-01764493⟩