Role of plasticity on interface crack initiation from a free edge and propagation in a nano-component

2007 ◽  
Vol 145 (4) ◽  
pp. 261-271 ◽  
Author(s):  
Hiroyuki Hirakata ◽  
Yoshimasa Takahashi ◽  
Do Truong ◽  
Takayuki Kitamura
Keyword(s):  
Crack Initiation ◽  
Interface Crack ◽  
Free Edge

The Role of Microtexture on Fatigue Lifetime Variability and Crack Initiation Mechanisms (Preprint)

2011 ◽  
Author(s):  
Christopher J. Szczepanski ◽  
S. L. Semiatin ◽  
James M. Larsen
Keyword(s):  
Crack Initiation ◽  
Fatigue Lifetime

scholarly journals Effect of interfacial slippage on the near-tip fields of an interface crack between a soft elastomer and a rigid substrate

2014 ◽  
Vol 470 (2170) ◽  
pp. 20140497 ◽  
Author(s):  
T. H. Lengyel ◽  
Rong Long ◽  
P. Schiavone
Keyword(s):  
Interface Crack ◽  
Wedge Angle ◽  
The Body ◽  
Far Field ◽  
Cauchy Stress ◽  
Rigid Substrate ◽  
Interfacial Cracks ◽  
Friction Surfaces ◽  
Interfacial Slippage

We consider the role of interfacial slippage in the deformation and stress fields near the tip of a plane interface crack occurring between a compressible hyperelastic material and a rigid substrate. Specifically, we draw comparisons between the two limiting cases of ‘no-slip’ (infinitely high friction) and ‘frictionless’ (zero friction) surfaces by performing corresponding asymptotic analyses in the crack-tip region. Our results indicate that for the no-slip case, when the body is subjected to far-field loading, the crack deforms to a wedge-like shape consistent with experimental observations reported in the literature. Moreover, in this case, the wedge angle is shown to be directly related to ratios of various Cauchy stress components on the bonded surface in the near-tip region. Finite-element simulations reveal that the wedge angle also depends on material compressibility and the far-field loading conditions. By contrast, the analysis of the frictionless case reveals that the crack consistently opens into a smooth parabolic shape with a right wedge angle and near-tip stress field dominated by the normal stress at the surface. The results established here can be used as a basis for the understanding of the role of varying degrees of slippage on interfacial cracks.

Role of Cavity Formation in Crack Initiation of Cold-Worked Carbon Steel in High-Temperature Water

CORROSION ◽  
10.5006/0821 ◽  
2013 ◽  
Vol 69 (5) ◽  
pp. 487-496 ◽  
Author(s):  
Koji Arioka ◽  
Tomoki Miyamoto ◽  
Takuyo Yamada ◽  
Masanori Aoki
Keyword(s):  
High Temperature ◽  
Carbon Steel ◽  
Crack Initiation ◽  
Cavity Formation ◽  
High Temperature Water ◽  
Cold Worked ◽  
Temperature Water

scholarly journals The role of oxidation damage in fatigue crack initiation of an advanced Ni-based superalloy

2015 ◽  
Vol 81 ◽  
pp. 265-274 ◽  
Author(s):  
S. Cruchley ◽  
H.Y. Li ◽  
H.E. Evans ◽  
P. Bowen ◽  
D.J. Child ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Crack Initiation ◽  
Fatigue Crack Initiation ◽  
Oxidation Damage

The role of extrusions and intrusions in fatigue crack initiation

2017 ◽  
Vol 185 ◽  
pp. 46-60 ◽  
Author(s):  
J. Polák ◽  
V. Mazánová ◽  
M. Heczko ◽  
R. Petráš ◽  
I. Kuběna ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Crack Initiation ◽  
Fatigue Crack Initiation
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