Patent ID: 7038446
Filing Date: 2006-05-02
Classification: G01N

Abstract:
1. An apparatus for inspecting contours formed along a predetermined region of a surface on a workpiece formed of electrically conductive material using eddy current comprising: a probe having a longitudinal axis, the probe movable along a path of travel with respect to the predetermined region to be inspected on the workpiece to a static testing position substantially coaxial with the longitudinal axis of the probe; at least two coils spaced longitudinally from one another and supported by the probe to be electrically excited with a predetermined frequency and amplitude while the probe is stationary at the static testing position with respect to the workpiece; and means for measuring the excitation voltage of each coil as eddy currents are induced in the electrically conductive material of the workpiece by the coils supported on the probe while stationary with respect to the workpiece.