Phase-Correlated Eddy Current Testing
Phase-correlated eddy current testing analyzes phases in eddy current signals to determine conductivity and coating thickness. It enables precise measurements independent of lift-off variations.
How It Works: Physical-Chemical
Phase-correlated eddy current testing (PCET) uses differences in electrical conductivity of different material phases. By analyzing the eddy current signals, you can identify different phases and figure out their properties.
Why It Matters in Welding & Risks
This test is especially important for metals with complex microstructures, like steel or alloys. It helps spot phase shifts and can check weld quality. If you misread the signals, you might miss defects, which is a safety risk.
Shop Practice & What to Do
To run PCET right, record and analyze the signals correctly. Set the temperature and voltage precisely. For steel, use a minimum layer thickness of 2 mm. Have a qualified technician do the evaluation to get reliable results.