Abstract

A numerical model dedicated to the simulation of external eddy current in- spection of tubes from the outer diameter surface has been developed. Calculation of the primary field, including tilted and off-centre encircling coils configurations, is devel- oped thereafter using splines functions for multivariate integration. Simulation results are compared to laboratory controlled data for a centered probe testing a non-magnetic tube affected by a volumetric flaw. Experimental validation is also conducted in the case of an off-centre probe in real industrial conditions.

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