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Evaluation of Ct-parameter for Weld Interface Crack Considering Material Plastic Behavior
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 Title & Authors
Evaluation of Ct-parameter for Weld Interface Crack Considering Material Plastic Behavior
Yun, Gi-Bong; Lee, Jin-Sang;
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 Abstract
In this study, behavior of which is a well-known fracture parameter characterizing creep crack growth rate, is investigated for weld interface cracks. Finite element analyses were per formed for a C(T) specimen under constant loading condition for elastic-plastic-creeping materials. In modeling C(T) geometry, an interface was employed along the crack plane which simulated the interface between weld and base metals. The versus time relations were obtained under various creep constant combinations and plastic constant combinations for weld and base metals, respectively. A unified versus time curve is obtained by normalizing with and t with for all the cases of material constant variations.
 Keywords
Creep;Time Dependent Fracture Mechanics;Ct-parameter;C-integral;Fusion Line Crack;
 Language
Korean
 Cited by
 References
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