GB/T 31554-2015 "Metal and Non-metallic Substrate Nonmagnetic Metal Overlay, Overlay Film thickness measurement Phase-sensitive eddy current method", standardizes the use of phase-sensitive eddy current method for the measurement of nonmagnetic metal overlay Film thickness on metals and Non-metallic substrates. It clarifies the measurement principle, equipment, operation steps, result calculation, etc., and provides a unified standard for the film thickness measurement of the relevant overlay, which helps to achieve accurate detection and ensure the mass of the overlay and product performance.
| Status | Active |
|---|---|
| CCS | A29 | ICS | 25.220.40 |
| Release Date | 2015-05-15 00:00:00 | Implementation Date | 2016-01-01 00:00:00 |