Details
| Original language | English |
|---|---|
| Pages (from-to) | 13-28 |
| Number of pages | 16 |
| Journal | Engineering fracture mechanics |
| Volume | 94 |
| Publication status | Published - 25 Jun 2012 |
| Externally published | Yes |
Abstract
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.
Keywords
- Effective stress intensity factor, Fatigue crack growth, Mixed mode fracture, Plastic zones, Slip irreversibility
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Engineering fracture mechanics, Vol. 94, 25.06.2012, p. 13-28.
Research output: Contribution to journal › Article › Research › peer review
}
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.
PY - 2012/6/25
Y1 - 2012/6/25
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.
KW - Effective stress intensity factor
KW - Fatigue crack growth
KW - Mixed mode fracture
KW - Plastic zones
KW - Slip irreversibility
UR - http://www.scopus.com/inward/record.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
VL - 94
SP - 13
EP - 28
JO - Engineering fracture mechanics
JF - Engineering fracture mechanics
SN - 0013-7944
ER -