Eur. Phys. J. Appl. Phys. 52, 23309 (2010)
https://doi.org/10.1051/epjap/2010101

A perturbation method for the A-χ geometric eddy-current formulation

¹ Université de Liège, Département d'Électricité, Électronique et Informatique, 4000 Liège, Belgium
² Università di Udine, Dipartimento of Ingegneria Elettrica, Gestionale e Meccanica, Via delle Scienze 208, 33100 Udine, Italy

Corresponding authors: ruben.specogna@uniud.it patrick.dular@ulg.ac.be trevisan@uniud.it

Received: 16 December 2009
Accepted: 20 May 2010
Published online: 21 October 2010

Abstract

A perturbation method for the A-χ geometric formulation to solve eddy-current problems is introduced. The proposed formulation is applied to the feasibility design of a non-destructive evaluation device suitable to detect “long” longitudinal flaws in hot steel bars.