Wall thickness measurement, in particular of a vane, by eddy currents

摘要

The method involves determining impedance values of an electric circuit by an eddy current detector (20) applied on a wall of a hollow part with a vane type curved surface. The impedance values are introduced in input of a digital processing unit of a neural network type. Parameters of the neural network are defined in advance by reading over wedges of radius of curvature determined in the interval of the radii of curvature of the curved surface and a determined thickness of the wall.