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About the Eddy Current and the High Frequency Wave Emission Non Destructive Testing Techniques

Non-destructive eddy current testing uses a magnetic field to probe a material or structure (target). A coil bearing an alternating current of frequency f generates a magnetic field. This field induces in the target eddy currents.

These currents in turn create a secondary magnetic field that will be picked up by the same coil or a special sensor. By analyzing this secondary field, it is possible to obtain information on the state of the target.

Eddy currents can help determine thickness, electrical conductivity, defects of complex shapes, without having to open or even touch them.

The “High Frequency Wave Emission” method uses a high frequency wave to penetrate the target to be tested. This wave is generated by electrodes, like radar antennas. Then the characteristics of the wave reflected by the target are analyzed to deduce the state of the target. The method “Emission of high frequency wave” works in general in air, but also very well in water, which is poorly known until today. It is a very powerful tool for structure health monitoring (SHM).

Prestigious companies and research institutes have trusted Sciensoria: Airbus, CETIM, CEA, General Electric, Graftech, Mahle, Métalor, Hutchinson, Péchiney, PSA automobile, Oberthur Fiduciaire, Schneider Electric, Schmidt group, Surys, Technip FMC, etc.

Sciensoria
18 avenue Joseph Jan
35170 BRUZ FRANCE
Téléphone : 02 99 57 19 71
fax : (33) (02) 99 57 18 78
e-mail : info@sciensoria.fr