Eddy current test techniques can be used to measure which of the following?

Eddy current testing is a non-destructive testing method that utilizes electromagnetic induction to detect flaws and measure properties of conductive materials. In this context, it is particularly effective for measuring various types of thickness.

Coating thickness is measurable because eddy current techniques can discern the thickness of non-conductive coatings over conductive substrates. Similarly, cladding thickness can also be assessed, as the eddy currents generated in the conductive substrate provide information about the thickness of overlying cladding materials. Additionally, gauge thickness of sheets is within the scope of eddy current testing, especially when measuring the thickness of conductive sheets, regardless of their geometric configuration.

The ability of eddy current testing to reliably measure all these different types of thicknesses is a key advantage of the method, making it versatile for various applications in material evaluation and quality control. This multifaceted applicability underlines why all listed options are indeed appropriate uses of eddy current techniques.