The control is based on the perturbations that the currents, induced
from a magnetic field in a material conductor, feels in the interaction
with structural anomalies.
It can detect superficial and sub-superficial defects presents in the material
are they of geometrical kind, cracks, thermocorrosions or magnetical/electrical.
It can be examined all the conductor materials, typically the metals.
It is generally employeed in the control of the weldings, in the superficial
carry-over and in aeronautical field.
Duemme utilises ET technical into refineries in the control of heat exchangers
in service during the maintenance periods .