scholarly journals Crack nucleation and growth during dynamic indentation of chemically-strengthened glass

2020 ◽  
Vol 38 ◽  
pp. 100754
Author(s):  
M. Kang ◽  
W. Li ◽  
A.F.T. Leong ◽  
M. Guan ◽  
K. Fezzaa ◽  
...  
Keyword(s):  
Crack Nucleation ◽  
Nucleation And Growth ◽  
Dynamic Indentation ◽  
Strengthened Glass ◽  
Crack Nucleation And Growth

Probabilistic Treatment of Crack Nucleation and Growth for Gas Turbine Engine Materials

2010 ◽  
Vol 132 (8) ◽  
Author(s):  
M. P. Enright ◽  
R. C. McClung ◽  
S. J. Hudak ◽  
W. L. Francis
Keyword(s):  
Gas Turbine ◽  
Life Prediction ◽  
Crack Nucleation ◽  
Gas Turbine Engine ◽  
Nucleation And Growth ◽  
Smooth Specimen ◽  
Growth Phases ◽  
Adequate Treatment ◽  
Turbine Engine ◽  
Crack Nucleation And Growth

The empirical models commonly used for probabilistic life prediction do not provide adequate treatment of the physical parameters that characterize fatigue damage development. For these models, probabilistic treatment is limited to statistical analysis of strain-life regression fit parameters. In this paper, a model is proposed for life prediction that is based on separate nucleation and growth phases of total fatigue life. The model was calibrated using existing smooth specimen strain-life data, and it has been validated for other geometries. Crack nucleation scatter is estimated based on the variability associated with smooth specimen and fatigue crack growth data, including the influences of correlation among crack nucleation and growth phases. The influences of crack nucleation and growth variability on life and probability of fracture are illustrated for a representative gas turbine engine disk geometry.

Three-dimensional simulation of fretting crack nucleation and growth

2012 ◽  
Vol 96 ◽  
pp. 447-460 ◽  
Author(s):  
B.J. Carter ◽  
E.C. Schenck ◽  
P.A. Wawrzynek ◽  
A.R. Ingraffea ◽  
K.W. Barlow
Keyword(s):  
Crack Nucleation ◽  
Three Dimensional ◽  
Nucleation And Growth ◽  
Dimensional Simulation ◽  
Crack Nucleation And Growth
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