Study on the Influence of Coil Placement on Pulsed Eddy Current Testing

Abstract The pipeline system of plant is installed with an insulation layer on the outer wall pipeline. Currently, primary methods detecting ultrasound and uradiographic testing, which require removal outside before testing. As a result, time extends, labor costs increase, increase risk accidental exposure. Applying PEC technique for steam pipelines can eliminate disassembly achieve non-stop online screening. defects testing by coil placement essential indicator technique, main influence factor accuracy. article intensifies modeling simulation applying Ansys Maxwell designs coaxial vertical detection coils to simulate capability flat bottom in case consistency lift-off distance, materials, other conditions. It selects nuclear power sample pipes Recording test result UT methods, effects two PECT are compared. Finally, study proposes development trends.