Phase-sensitive eddy current measures metallic coatings

摘要

Metallic coatings on both ferrous and nonferrous substrates are measured by the Phascope PMP 10, which employs the phase-sensitive eddy current test method. The technology is particularly suited to measuring nickel on steel or nonferrous metal such as copper or brass on bronze. It is also useful for measuring copper on printed circuit boards. According to the manufacturer, the phase-sensitive technology reduces the effect of part shape, surface roughness and probe lift-off, compared to the amplitude eddy current test method. Rough or curved surfaces can be measured accurately.