Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Reexamination Certificate
2006-03-21
2006-03-21
LeDynh, Bot (Department: 2862)
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
C324S243000, C324S260000
Reexamination Certificate
active
07015690
ABSTRACT:
An omnidirectional eddy current (EC) probe includes at least one EC channel having a first and a second sense coil that are offset in a first (x) and a second (y) direction and overlap in at least one of the directions (x,y). At least one drive coil is configured to generate a probing field for the EC channel in a vicinity of the sense coils. An omnidirectional EC inspection system includes an omnidirectional EC array probe (ECAP) that includes a number of EC channels and drive coils. Each EC channel includes first and second sense coils with opposite polarities. The drive coils have alternating polarities. Electrical connections perform differential sensing for respective EC channels. Corrective drive coils are disposed at respective ends of the EC channels and generate probing fields. An eddy current instrument is connected to the omnidirectional ECAP and receives differential sensing signals from the EC channels.
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EP Search Report, EP05253068, Jul. 22, 2005.
Gambrell Gigi Olive
McKnight William Stewart
Nath Shridhar Champaknath
Plotnikov Yuri Alexeyevich
Wang Changting
Clarke Penny A.
General Electric Company
LeDynh Bot
Patnode Patrick K.
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