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US 2020/0025718 A1Published application
Tube inspection unit with eddy current probe and corresponding method
AssigneeFramatome
InventorsYann KERNIN, Marc PIRIOU, Jean-Marc DECITRE, Frédéric NOZAIS
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Abstract
A tube inspection unit (10) includes an eddy current probe (14). The probe (14) has a plurality of inductors and a plurality of receivers. The receivers are magnetoresistances having a substantially linear functional zone. The inductors of the probe (14) are linked to a controller (26). The controller (26) is programmed to inject, into the inductors, a voltage with a sinusoidal component and a nonzero direct-current component, such that the receivers have a polarization center situated inside the substantially linear functional zone.
Claims17
1-16. (canceled)
A tube inspection unit, comprising:
- an eddy current probe, the eddy current probe comprising:
- a plurality of inductors;
- and a plurality of receivers, the receivers being magnetoresistances having a substantially linear functional zone;
- and
- a controller, the inductors of the eddy current probe being connected to the controller, the controller being programmed to inject, into the inductors, a voltage having a sinusoidal component and a nonzero direct-current component, the receivers then having a polarization center situated in the substantially linear functional zone.
2 more elements
Dependencies are inferred from the claim text.