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Prediction of Ductile Fracture Initiation Using Micromechanical Analysis by M. Rakin; Z. Cvijovic; V. Grabulov; S. Putic; A. Sedmak is a Engineering article available to read on EtoBox.

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In the paper ductile fracture initiation analysis of low-alloyed ferritic steel has been made by application of two micromechanical models: the Rice-Tracey void growth model and the Gurson-Tvergaard-Needleman (GTN) model. The aim of the study was to analyse transferability of micromechanical parameters determined on specimens without initial crack to pre-cracked specimens. A significant part of the research has been carried out through participation in the round robin project organised by the European Structural Integrity Society (ESIS). Tensile tests have been performed on cylindrical smooth specimens and CT specimens. Critical values of micromechanical parameters determined on smooth specimen for both applied models, have been used for prediction of the crack growth initiation in CT specimen. Modelling of the first phase of ductile fracture--void nucleation--has been carried out using quantitative metallographic analysis of non-metallic inclusion content in tested steel. For determination of critical values of model parameters corresponding to ductile fracture initiation a simple procedure has been applied based on a combination of experimental and numerical results. Evaluated J

Who reads Prediction of Ductile Fracture Initiation Using Micromechanical Analysis?

Author

M. Rakin; Z. Cvijovic; V. Grabulov; S. Putic; A. Sedmak

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0013-7944)

Published

2004

Language

EN

Field

Engineering (Physical Sciences)