PROCEDURE AND DEVICE OF EDDY CURRENT IMAGING DEVICE FOR THE DETECTION AND THE CHARACTERISATION OF DEFECTS HIDDEN IN COMPLEX STRUCTURES

摘要

This method of the eddy current comprises the steps consisting in: - position (72) in the vicinity of a wide region of inspection a device for measuring the magnetic field of surface, - generate (74, 92) a triggering magnetic field on the total area of inspection observation, - measure (76, 84) at the surface of a magnetic field resulting in the form of imagery. - treat the images (90) generation step (74, 82) consists in generating a set of at least two forms of uncle of triggering magnetic field, the step of measuring (76, 86) consists in measuring a set of configurations of the resulting magnetic field in the form of images, the processing step (90) of the images by a combination makes it possible to detect defects and to determine their position and their type.