TY - JOUR
T1 - Full field measurements of anisotropic stress intensity factor ranges in fatigue
AU - Pataky, Garrett J.
AU - Sangid, Michael D.
AU - Sehitoglu, Huseyin
AU - Hamilton, Reginald F.
AU - Maier, Hans J.
AU - Sofronis, Petros
N1 - Funding Information:
The research was supported by a Critical Research Initiative (CRI) at the University of Illinois and partly by the US Department of Energy Nuclear Energy University Program (NEUP) under Grant DOE-INL-00091210.
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/11
Y1 - 2012/11
N2 - The effects of anisotropy during mixed mode fatigue crack growth were studied in single crystal 316L stainless steel. An anisotropic least-squares regression algorithm using displacements from digital image correlation was developed to find the effective stress intensity factors, K I and K II, and the T-stress. Crack tip plastic zones were determined using an anisotropic yield criterion. Strains in the plastic zone obtained from digital image correlation showed a dependence on the crystallography and load ratio. Crack tip slip irreversibility was measured and showed an increasing trend with increasing crack length; this information is critical for describing crack growth behavior.
AB - The effects of anisotropy during mixed mode fatigue crack growth were studied in single crystal 316L stainless steel. An anisotropic least-squares regression algorithm using displacements from digital image correlation was developed to find the effective stress intensity factors, K I and K II, and the T-stress. Crack tip plastic zones were determined using an anisotropic yield criterion. Strains in the plastic zone obtained from digital image correlation showed a dependence on the crystallography and load ratio. Crack tip slip irreversibility was measured and showed an increasing trend with increasing crack length; this information is critical for describing crack growth behavior.
UR - http://www.scopus.com/inward/record.url?scp=84865994152&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865994152&partnerID=8YFLogxK
U2 - 10.1016/j.engfracmech.2012.06.002
DO - 10.1016/j.engfracmech.2012.06.002
M3 - Article
AN - SCOPUS:84865994152
SN - 0013-7944
VL - 94
SP - 13
EP - 28
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
ER -