A finite element study of the remote field eddy current phenomenon

The difference in operation of conventional and remote field eddy-current nondestructive evaluation procedures is described. A finite-element study conducted to provide physical understanding of the remote-field eddy-current phenomenon is reported. Finite-element predictions of probe performance are shown to agree very well with experimentally observations. They also indicate the presence of an unusual potential valley and corresponding phase knot in the pipeline wall that play a significant role in explaining the underlying physics of the method.<
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