07015690 is referenced by 99 patents and cites 26 patents.

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.

Title
Omnidirectional eddy current probe and inspection system
Application Number
10/856381
Publication Number
7015690 (B2)
Application Date
May 27, 2004
Publication Date
March 21, 2006
Inventor
Gigi Olive Gambrell
West Chester
OH, US
William Stewart McKnight
Hamilton
OH, US
Shridhar Champaknath Nath
Niskayuna
NY, US
Yuri Alexeyevich Plotnikov
Niskayuna
NY, US
Changting Wang
Schenectady
NY, US
Agent
Patrick K Patnode
Penny A Clarke
Assignee
General Electric Company
NY, US
IPC
G01N 27/72
G01N 27/90
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