抄録
A technique to heal a fatigue crack in a stainless steel based on the control of the high-density electric current field was developed. The high-density electric current field was caused at the crack tip by applying a pulse current through the electrodes near the crack. The crack surface was observed by a scanning electron microscope (SEM) and an atomic force microscope (AFM) before and after the application of the high-density pulse current in order to examine the effect of the high-density electric current field on the fatigue crack. The experimental results show that the fatigue crack was closed and the surface having the slips at the vicinity of the crack tip became smoother by the electrical stimulation.
