Eddy-current testing of conductive metal pipes, parts, welded joints and near-surface defects for in-process and in-service pressure equipment based on NB/T47013.6 and NB/T47013.13 and other eddy-current standards.
The depth of the three slots of ABC is 0.2, 0.5 and 1.0, with an error of 0.05. It is made of 2024 aluminum alloy in T3 state or alloy material with similar conductive properties.
Pulsed eddy current testing is used to detect the thickness reduction of base metal wall of pressure equipment body with covering layer. Pipe specimen and plate specimen 1 are used to check the instrument sensitivity, and plate specimen 2 is used to test the performance parameters of the system within its range.