Abstract: In an approach to detection of grinding burns on high strength steel through chrome plating comprising: a frequency generator device; a scanning device; one or more computer processors; one or more non-transitory computer readable storage media; and program instructions stored on the one or more non-transitory computer readable storage media for execution by at least one of the one or more computer processors, the stored program instructions including instructions to: calibrate the system; inject a low frequency signal into a Device Under Test (DUT); scan the DUT and receive a resulting eddy current (EC) signal response; extract one or more real components and one or more imaginary components of the resulting EC signal response; and perform a phase rotation on the one or more orthogonal components of the resulting EC signal response to highlight one or more effects of interest.