Emus transducer system as well as a method for producing linearly polarised transverse waves with variably predeterminable polarisation direction within a test specimen

Abstract

Described are an EMUS transducer system as well as a method for producing linearly polarised transverse waves with variably predeterminable polarisation direction within a test specimen containing at least ferromagnetic material portions and with a test specimen surface with a magnetisation unit which is provided and set up for being arrangeable on the surface of the test specimen and for producing a magnetic field orientated parallel to the test specimen surface within the test specimen, as well as with at least one HF coil arrangement which is provided and set up for being arrangeable on the test specimen surface and for producing or detecting a HF field occurring overlaid with the magnetic field. The invention stands out in that the magnetisation unit has at least three magnetisation bodies spatially distanced from one another, which are provided and set up to be placeable onto the test specimen surface and in each case to introduce magnetic field lines with a predeterminable magnetic flux into the test specimen, and in that means are provided, using which the magnetic flux of the magnetic field lines to be introduced into the test specimen, which emanate from at least one magnetisation body, can be changed in such a manner, so that the spatial direction of the magnetic field forming parallel to the test specimen surface within the test specimen can be changed in a predeterminable manner.

Dependencies are inferred from the claim text.