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Crack Face Friction Effects on Mode II Stress Intensities for a Surface-Cracked Coating In Two-Dimensional Rolling $Contact^{\copyright}$  

Moon Byung-Young (부산대학교/동남권부품소재산학협력혁신사업단)
Kim Byeong Soo (인제대학교 기계자동차공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.6, 2005 , pp. 159-167 More about this Journal
Abstract
This work focuses on the effects of crack free friction on Mode II stress intensity factors, $K_{II}$, for a vertical surface crack in a two-dimensional finite element model of TiN/steel subject to rolling contact. Results indicate that maximum $K_{II}$ values, which occur when the load is adjacent to the crack, may be significantly reduced in the presence of crack face friction. The reduction is more significant for thick coatings than for thin. Crack extension and increased layer thickness result in increased $K_{II}$ values. The effect of crack face friction on compressive $K_I$ values appears negligible. Comparative results are presented for $MoS_2/steel$ and diamond-like carbon(DLC)/Ti systems.
Keywords
Crack Propagation; Surface Films/Coatings; Stress Analysis; Contact Mechanics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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