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Eddy-Current Modeling of a Continous Conductivity Profile Resulting From a Diffusion Process 5
Lambert, Marc; Nouguier, Frederic; Zorgati, Riadh.
This paper deals with the modelization of eddy-current measurements over combustion turbine blade coatings affected by depletion of aluminum. First, we model the response of an eddy-current coil over a layered metallic structure with a top over-aluminized coating by extending the analytical Uzal-Rose's model for one hyperbolic tangent conductivity profile to a conductivity profile using two hyperbolic tangents for taking inward and outward depletion of aluminum inside the coating into account. Results obtained with this model are similar to those obtained with a numerical multilayer model but with a reduced computing time.
Tipo: Text Palavras-chave: Coils; Eddy current testing; Electrical conductivity measurement; Inverse problems; Probes.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00043/15424/12976.pdf
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