TY  - CONF
AU  - Cvijović-Alagić, Ivana
AU  - Međo, Bojan
AU  - Cvijović, Zorica
AU  - Gubeljak, Nenad
AU  - Rakin, Marko
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6298
AB  - The fracture behavior of implant Ti-6Al-4V alloy is essential for its service capability in orthopedic surgery. Therefore, it is
very important to understand and predict the fracture resistance of this biomedical material. Although several
micromechanical models have been developed for modeling the fracture behavior of metallic materials with ductile dimple
fracture as predominant fracture mode, they have predominantly been applied to materials such as steels and aluminum
alloys. Recently, efforts have been made to apply these micromechanical models to predict crack initiation and growth in
two-phase titanium alloys. Due to the complex multiple fracture micromechanisms operative in these alloys, it is necessary
to check the applicability of damage models on these materials. In the present study, the mechanical testing and numerical
simulation are carried out to characterize the fracture behavior of an extra-low impurity (ELI) Ti-6Al-4V alloy solution
treated below β transus temperature followed by water quenching in order to obtain the globular microstructure with 82
vol.% primary α and 18 vol.% β phase. The compact tension (CT) specimen is used for fracture testing. The crack tip
opening displacement (CTOD) and strain distribution near the crack tip are measured on its surface by the digital
stereometric method. The complete Gurson model (CGM) implemented in a finite element (FE) code ABAQUS is applied to
predict the crack resistance (CTOD-R) curves and crack growth initiation (CTODi) values. A relatively good correlation
between the experimental and results obtained by numerical simulation demonstrates the applicability of CGM for the
prediction of fracture behavior in Ti-6Al-4V ELI alloy with given microstructure. The better agreement, in comparison with
plane strain conditions, is achieved through a 3D ½ symmetrical FE model with appropriate FE size. The microstructural
effects on the fracture mechanics parameter and fracture modeling are discussed.
PB  - The Society for Structural Integrity and Life
C3  - 22nd European Conference on Fracture - ECF22
T1  - Numerical simulation of fracture in Ti-6Al-4V alloy for orthopedic applications,
SP  - 392
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6298
ER  - 

@conference{
author = "Cvijović-Alagić, Ivana and Međo, Bojan and Cvijović, Zorica and Gubeljak, Nenad and Rakin, Marko",
year = "2018",
abstract = "The fracture behavior of implant Ti-6Al-4V alloy is essential for its service capability in orthopedic surgery. Therefore, it is
very important to understand and predict the fracture resistance of this biomedical material. Although several
micromechanical models have been developed for modeling the fracture behavior of metallic materials with ductile dimple
fracture as predominant fracture mode, they have predominantly been applied to materials such as steels and aluminum
alloys. Recently, efforts have been made to apply these micromechanical models to predict crack initiation and growth in
two-phase titanium alloys. Due to the complex multiple fracture micromechanisms operative in these alloys, it is necessary
to check the applicability of damage models on these materials. In the present study, the mechanical testing and numerical
simulation are carried out to characterize the fracture behavior of an extra-low impurity (ELI) Ti-6Al-4V alloy solution
treated below β transus temperature followed by water quenching in order to obtain the globular microstructure with 82
vol.% primary α and 18 vol.% β phase. The compact tension (CT) specimen is used for fracture testing. The crack tip
opening displacement (CTOD) and strain distribution near the crack tip are measured on its surface by the digital
stereometric method. The complete Gurson model (CGM) implemented in a finite element (FE) code ABAQUS is applied to
predict the crack resistance (CTOD-R) curves and crack growth initiation (CTODi) values. A relatively good correlation
between the experimental and results obtained by numerical simulation demonstrates the applicability of CGM for the
prediction of fracture behavior in Ti-6Al-4V ELI alloy with given microstructure. The better agreement, in comparison with
plane strain conditions, is achieved through a 3D ½ symmetrical FE model with appropriate FE size. The microstructural
effects on the fracture mechanics parameter and fracture modeling are discussed.",
publisher = "The Society for Structural Integrity and Life",
journal = "22nd European Conference on Fracture - ECF22",
title = "Numerical simulation of fracture in Ti-6Al-4V alloy for orthopedic applications,",
pages = "392",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6298"
}

Cvijović-Alagić, I., Međo, B., Cvijović, Z., Gubeljak, N.,& Rakin, M.. (2018). Numerical simulation of fracture in Ti-6Al-4V alloy for orthopedic applications,. in 22nd European Conference on Fracture - ECF22
The Society for Structural Integrity and Life., 392.
https://hdl.handle.net/21.15107/rcub_technorep_6298

Cvijović-Alagić I, Međo B, Cvijović Z, Gubeljak N, Rakin M. Numerical simulation of fracture in Ti-6Al-4V alloy for orthopedic applications,. in 22nd European Conference on Fracture - ECF22. 2018;:392.
https://hdl.handle.net/21.15107/rcub_technorep_6298 .

Cvijović-Alagić, Ivana, Međo, Bojan, Cvijović, Zorica, Gubeljak, Nenad, Rakin, Marko, "Numerical simulation of fracture in Ti-6Al-4V alloy for orthopedic applications," in 22nd European Conference on Fracture - ECF22 (2018):392,
https://hdl.handle.net/21.15107/rcub_technorep_6298 .