TY - JOUR
T1 - Elucidating the Mechanism of Fatigue Crack Acceleration Following the Occurrence of an Underload
AU - Salvati, Enrico
AU - Sui, Tan
AU - Zhang, Hongjia
AU - Lunt, Alexander J.G.
AU - Fong, Kai Soon
AU - Song, Xu
AU - Korsunsky, Alexander M.
PY - 2016/12/1
Y1 - 2016/12/1
N2 - Fatigue Crack Growth Rate (FCGR) is altered by a single anomalous load exceeding cyclic maximum (Overload) or compressive load below cyclic minimum (Underload). The authors study fatigue crack acceleration due to a single compressive Underload using residual stress mapping (by synchrotron XRD) and crack closure analysis (by DIC). The relative influence and duration of these two principal causes of FCGR alteration are revealed. Validated FEA model is used for parametric analysis of the effect of baseline cyclic loading ratio and magnitude of Underload on the cyclic J-integral.
AB - Fatigue Crack Growth Rate (FCGR) is altered by a single anomalous load exceeding cyclic maximum (Overload) or compressive load below cyclic minimum (Underload). The authors study fatigue crack acceleration due to a single compressive Underload using residual stress mapping (by synchrotron XRD) and crack closure analysis (by DIC). The relative influence and duration of these two principal causes of FCGR alteration are revealed. Validated FEA model is used for parametric analysis of the effect of baseline cyclic loading ratio and magnitude of Underload on the cyclic J-integral.
UR - http://www.scopus.com/inward/record.url?scp=84980006464&partnerID=8YFLogxK
U2 - 10.1002/adem.201600069
DO - 10.1002/adem.201600069
M3 - Article
AN - SCOPUS:84980006464
VL - 18
SP - 2076
EP - 2087
JO - Advanced Engineering Materials
JF - Advanced Engineering Materials
SN - 1438-1656
IS - 12
ER -
