We consider the time-harmonic eddy current problem in its electric formulation where the conductor is a polyhedral domain. By proving the convergence in energy, we justify in what sense this problem is the limit of a family of Maxwell transmission problems: Rather than a low frequency limit, this limit has to be understood in the sense of BOSSAVIT [11]. We describe the singularities of the solu...

Accurate characterisation of small defects remains a challenge in non-destructive testing (NDT). In this paper, principle-component parametric-manifold mapping approach is applied to single-frequency eddy-current defect problems for surface breaking planar half-space. A broad 1–8 MHz frequency-range FE-circuit model & calibration developed validated simulate scans surface-breaking notch defects...