Patent ID: 6281678
Filing Date: 2001-08-28
Classification: G01N

Abstract:
An apparatus for an eddy current probe for detecting anomalies in a tube, comprising:a) an elongated probe assembly having a central axis, said probe assembly having an array of coils disposed therein;b) a first pair of coils each having their axis of rotation perpendicular to said central axis of said elongated probe assembly;c) wherein each of said first pair of coils further comprises a first coil winding and a second coil winding, each having their axis of rotation perpendicular to said central axis of said elongated probe assembly;d) a second pair of coils each having their axis of rotation parallel to said central axis of said elongated probe assembly;e) a third pair of coils, wherein a first larger coil of said pair has its axis of rotation parallel to said central axis of said elongated probe assembly, and, a second smaller coil of said pair has its axis of rotation perpendicular to said central axis of said elongated probe assembly; and,f) a coil actuating means for energizing said first pair of coils, said second pair of coils, and third pair of coils whereby eddy currents are generated suitable for detecting anomalies in the tube.