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Study of the Degrees of Freedom Management of Dual Formulations for the Modelling of Thin Cracks in Eddy Current Testing

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Abstract:

The 3D finite element modelling of thin cracks in eddy current testing is studied using two dual formulations a- and t-. Boundary conditions are employed on the surface of the crack in order to comply with the right behaviour of the electromagnetic fields. The aim of this paper is to show that the accuracy of these formulations is strongly conditioned by the finite element crack mesh density and the management of the Degrees Of Freedom (DOF) on the crack.

Keywords: DUAL FORMULATIONS; EDDY CURRENT TESTING; FINITE ELEMENT METHOD; THIN CRACK MODELLING

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/sl.2009.1084

Publication date: June 1, 2009

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