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Analysis of Shape Change of a Surface Crack during Stable Fatigue Growth
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 Title & Authors
Analysis of Shape Change of a Surface Crack during Stable Fatigue Growth
Chu, Seok-Jae;
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 Abstract
The multi-point procedure is developed to predict the shape change of a semi-elliptical surface crack during stable fatigue crack growth. 3-D stress intensity factors along a crack front are calculated using the simplified 3-D J-intergral. Crack growth rate coefficient in the Paris law is assumed to be constant along the crack growth. Crack growth rate is set to be the distance between the two parallel tangent lines on the two semi-elliptic crack fronts before and after crack growth.
 Keywords
Stress Intensity Factor;J-Integral;Finite Element Method;Semi-Elliptical Surface Crack;Aspect Ratio;Multipoint Procedure;
 Language
Korean
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