Modelling of a thin crack in ECT using a-ψ formulation with Whitney elements

A finite element modelling of thin cracks in eddy current testing (ECT) is proposed using an a-ψ formulation with edge and nodal Whitney element discretization. A double layer of nodes is employed on the surface of the crack in order to comply with the right behaviour of the electromagnetic fields. The benchmark problem team workshop n ◦ 15-1 has been solved and the computation results have been compared to the experimental ones.