Patent ID: 8896300
Filing Date: 2014-11-25
Classification: G01N

Abstract:
1. A method of developing a two-dimensional eddy current coil which emulates a three-dimensional eddy current coil operable to perform eddy current inspection of a test surface, the method comprising the steps of: a, determining characteristics of a first eddy current flow on the test surface associated with the three-dimensional coil, wherein the characteristics of the first eddy current flow include a flow pattern having a continuous flow defining at least two oppositely wound swirls; and b, building the two-dimensional coil so that when the two-dimensional coil is placed against and parallel to the test surface, the two-dimensional coil produces a second eddy current flow with characteristics similar to that of the first eddy current flow, and the two-dimensional coil being so configured as to be selectively useable as one of: an eddy current driver, an eddy current driver and receiver, and an eddy current receiver, and, wherein a shape and pattern of the two-dimensional coil approximately follows a shape and pattern of the first eddy current flow, and wherein the two-dimensional coil is wound in a pair of oppositely wound windings, using one conductively continuous circuit element.