Crack-Tip Plastic Zone Size and Shape via DIC

Author(s):  
G. L. G. Gonzáles ◽  
J. A. O. González ◽  
V. E. L. Paiva ◽  
J. L. F. Freire
2016 ◽  
Vol 39 (8) ◽  
pp. 969-981 ◽  
Author(s):  
J. M. Vasco-Olmo ◽  
M. N. James ◽  
C. J. Christopher ◽  
E. A. Patterson ◽  
F. A. Díaz

2013 ◽  
Vol 842 ◽  
pp. 455-461
Author(s):  
Yu Sha ◽  
Shi Gang Bai ◽  
Ya Hui Wang

Elastic–plastic finite element analyses have been performed to study the compressive stress effect on fatigue crack growth under applied tension–compression loading. The near crack tip stress, crack tip opening displacement and crack tip plastic zone size were obtained for a kinematic hardening material. The results have shown that the near crack tip local stress, displacement and reverse plastic zone size are controlled by the maximum stress intensity factors Kmax and the applied compressive stress σmaxcom under tension–compression. Based on the finite element analysis results, a fatigue crack propagation model using Kmax and σmaxcom as a parameters under tension–compression loading has been developed.The models under tension–compression loading agreed well with experimental observations.


2009 ◽  
Vol 24 (9) ◽  
pp. 2986-2992 ◽  
Author(s):  
X.X. Xia ◽  
Wei H. Wang ◽  
A. Lindsay Greer

We report that various metallic glassy nanostructures including nanoridges, nanocones, nanowires, nanospheres, and nanoscale-striped patterns are spontaneously formed on the fracture surface of bulk metallic glasses at room temperature. A clear correlation between the dimensions of these nanostructures and the size of the plastic zone at the crack tip has been found, providing a way to control nanostructure sizes by controlling the plastic zone size intrinsically or extrinsically. This approach to forming metallic glassy nanostructures also has implications for understanding the deformation and fracture mechanisms of metallic glasses.


Author(s):  
M. El Meguenni ◽  
B. Bachir Bouiadjra ◽  
M. Benguediab ◽  
A. Ziadi ◽  
M. Naït-Abdelaziz ◽  
...  

2015 ◽  
Vol 2015.68 (0) ◽  
pp. 53-54
Author(s):  
Shohei MIYANAGA ◽  
Akihide SAIMOTO ◽  
Takuichiro INO ◽  
Shota TANIGAWA ◽  
Takayuki HIGASHI

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