Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1993-09-22
1995-08-15
Wieder, Kenneth A.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
324219, G01N 2782
Patent
active
054422868
ABSTRACT:
A device for inspecting a component, such as a dovetail slot of a gas turbine engine or the like, includes an eddy current array circuit having an active face for positioning on the surface of the component during the inspection operation and a backing disposed on a face of the eddy current array circuit opposite to the active face. The eddy current array circuit and the backing are disposed over the operating face and expandable sides of an expandable bar. The expandable bar has a slot formed therein with interior side edges which narrow toward the operating face of the bar at a predetermined slope. An expanding wedge with angled sides is positioned to cause the angled sides to respectively matingly engage the interior sides of the slot to cause the exterior sides of the expandable bar to expand outwardly a greater distance as the wedge is pushed deeper into the slot to cause the eddy current array circuit into conformance with the shape of the surface being inspected.
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"Robot Controlled Inspection of Roto-Symmetrical Parts", by S. Oaten and J. Bertelle, The American Society for Nondestructive Testing, Inc., ASNT Spring Conference, Mar. 30-Apr. 3, 1992, pp. 117-119.
Granger, Jr. Carl
Little Francis H.
Stapf Philip F.
Sutton, Jr. George H.
General Electric Company
Hess Andrew C.
Khosravi Kourosh Cyrus
Narciso David L.
Wieder Kenneth A.
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