TY - GEN
T1 - A review of failure mechanisms of ultra-high cycle fatigue in engineering materials
AU - Tian, H.
AU - Kirkham, M. J.
AU - Jiang, L.
AU - Yang, B.
AU - Wang, G.
AU - Liaw, P. K.
PY - 2007
Y1 - 2007
N2 - Fatigue behavior of engineering materials has been extensively studied. However, most published research does not extend past around 107 cycles. Because plots of the stress versus number of cycles to failure (S-N curves) of ferrous alloys and some other materials apparently reach a horizontal asymptote, it was assumed that specimens tested at stresses below the asymptote, called fatigue limit, would have infinite lives. However, research over the recent years has discovered fatigue failures at stresses below the fatigue limit and lives above 107 cycles, termed ultra-high cycle fatigue (UHCF). This paper reviews several failure mechanisms and models for UHCF, including slip mechanism, hydrogen-embrittlement mechanism, √area parameter model, and fatigue-crack initiation at porosities and inhomogeneities.
AB - Fatigue behavior of engineering materials has been extensively studied. However, most published research does not extend past around 107 cycles. Because plots of the stress versus number of cycles to failure (S-N curves) of ferrous alloys and some other materials apparently reach a horizontal asymptote, it was assumed that specimens tested at stresses below the asymptote, called fatigue limit, would have infinite lives. However, research over the recent years has discovered fatigue failures at stresses below the fatigue limit and lives above 107 cycles, termed ultra-high cycle fatigue (UHCF). This paper reviews several failure mechanisms and models for UHCF, including slip mechanism, hydrogen-embrittlement mechanism, √area parameter model, and fatigue-crack initiation at porosities and inhomogeneities.
KW - Crack initiation
KW - Endurance limit
KW - Fatigue life
KW - Ultra-high cycle fatigue
UR - http://www.scopus.com/inward/record.url?scp=58349085320&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:58349085320
SN - 9780873397049
T3 - VHCF-4 - 4th International Conference on Very High Cycle Fatigue
SP - 437
EP - 444
BT - VHCF-4 - 4th International Conference on Very High Cycle Fatigue
T2 - 4th International Conference on Very High Cycle Fatigue, VHCF-4
Y2 - 19 August 2007 through 22 August 2007
ER -