TY - GEN
T1 - Effect of high density electric current field on fatigue cracks in stainless steel
AU - Hosoi, A.
AU - Nagahama, T.
AU - Ju, Y.
PY - 2010
Y1 - 2010
N2 - A technique was developed to heal a fatigue crack by controlling a high density electric current field. The high-density electric current field was applied at the tip of the crack by using closely spaced electrodes. It was found that the electric stimulation influences the states and propagation behavior of a fatigue crack in the stainless steel. When the electric current was applied to a specimen having a pre-crack with a large opening displacement, a closure effect at the crack tip was shown and the bridges between the crack surfaces were observed. On the other hand, when the electric current was applied to a specimen having a pre-crack with a small opening displacement, an opening effect was shown. These effects were also evaluated quantitatively by the Paris law.
AB - A technique was developed to heal a fatigue crack by controlling a high density electric current field. The high-density electric current field was applied at the tip of the crack by using closely spaced electrodes. It was found that the electric stimulation influences the states and propagation behavior of a fatigue crack in the stainless steel. When the electric current was applied to a specimen having a pre-crack with a large opening displacement, a closure effect at the crack tip was shown and the bridges between the crack surfaces were observed. On the other hand, when the electric current was applied to a specimen having a pre-crack with a small opening displacement, an opening effect was shown. These effects were also evaluated quantitatively by the Paris law.
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U2 - 10.1115/IMECE2010-37819
DO - 10.1115/IMECE2010-37819
M3 - Conference contribution
AN - SCOPUS:84881406004
SN - 9780791844465
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 123
EP - 128
BT - ASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
T2 - ASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
Y2 - 12 November 2010 through 18 November 2010
ER -