Question

What are the limitations of eddy current?

Answer 1

Answer:

A primary disadvantage of ECT is that it only works with a current, meaning it cannot be applied to non-conductive materials. It's also non-conductive with ferromagnetic materials, as ECT equipment is subject to permeability changes on the welds.

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Explanation:

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Answer 2

Answer:

Susceptible to magnetic permeability changes: Small changes in permeability can make testing of welds and other ferromagnetic materials difficult. Only effective on conductive materials: Eddy current can only be used to measure materials that support the flow of electrical current.