Application of an Eddy-Current Method for the Assessment of Stored Plastic Deformation and Residual Mechanical Properties after Cyclic Loading of an Annealed Medium-Carbon Steel

摘要

The effect of cyclic loading of annealed steel 45 during low-cycle fatigue on changes in its electrical characteristics is studied. In the region of both small and mediate strains, an eddy-current transducer signal is found to be highly sensitive to the plastic deformation stored during cyclic loading. Correlations between readings of an eddy-current instrument and the residual mechanical properties of the material after cyclic loading are obtained. The possibility of assessing the residual mechanical properties of the material during its cyclic loading is considered.