Device and method for the electromagnetic, acoustic material testing and/or thickness measurement of a test object that contains at least electrically conductive and ferromagneticmaterial fractions

Abstract From the Canadian patent

The invention relates to a device and a method for testing the material of a test object (4), which contains at least electrically conductive and ferromagnetic material fractions and has at least one engineered surface (5) by means of at least one electromagnetic ultrasonic transducer assembly (EMUS). Said assembly comprises a permanent or electromagnetic assembly (1) comprising at least two magnetic poles (N S) of a differing polarity that , face the engineered surface (5) in addition to an eddy current coil (2) that is placed in close proximity to the engineered surface (5) between the two magnetic poles (N, S) in direct or indirect relation to said surface (5). The invention is …