Non destructive testing for creep damage of a ferromagnetic workpiece

摘要: Rapid nondestructive testing of a ferromagnetic workpiece for creep damage is carried out by placing an eddy current coil adjacent to the workpiece, passing alternating through coil, measuring response as influenced and comparing measurement calibrated known given material. Correlations rate time failure are generated from rupture tests performed on specimens material subjected varying conditions time, temperature stress. Qualitative can also be identify point greatest over find location lowest response. Conventional then at that if desired.