TY  - JOUR
AU  - Mijatović, Tamara
AU  - Milovanović, Aleksa
AU  - Sedmak, Aleksandar
AU  - Milović, Ljubica
AU  - Čolić, Katarina
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4195
AB  - Total hip replacement implants are used as an artificial replacement for disfunctional hips in order to sustain joint movement. Chosen material and design of total hip replacement are the most influential factors for artificial joint utilization. Selected total hip replacement is obtained by precision casting method, made from Ti6Al4V ELI (Extra Low Interstitials) alloy. In order to acquire a geometrical model of chosen implant, the 3D scanner is used and an obtained point cloud (PC), then exploited for reverse engineering to a CAD model. The neck thickness of implant affects angle of movement of the joint and structural integrity. Reducing the thickness of the neck section results in higher movement of the joint, but inversely affects its structural integrity. The 3D scanned implant has a neck thickness of 14.6 mm, and data from literature suggest that the best movement angle is for 9 mm thickness of the implant. In order to redesign the available implant, five different models with a neck thickness between 9 and 14.6 mm are made. Obtained results show the thickness effects the stress distribution in a critical area.
PB  - Society for Structural Integrity and Life, Institute for Material Testing
T2  - Structural Integrity and Life
T1  - Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant
EP  - 242
IS  - 3
SP  - 237
VL  - 19
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4195
ER  - 

@article{
author = "Mijatović, Tamara and Milovanović, Aleksa and Sedmak, Aleksandar and Milović, Ljubica and Čolić, Katarina",
year = "2019",
abstract = "Total hip replacement implants are used as an artificial replacement for disfunctional hips in order to sustain joint movement. Chosen material and design of total hip replacement are the most influential factors for artificial joint utilization. Selected total hip replacement is obtained by precision casting method, made from Ti6Al4V ELI (Extra Low Interstitials) alloy. In order to acquire a geometrical model of chosen implant, the 3D scanner is used and an obtained point cloud (PC), then exploited for reverse engineering to a CAD model. The neck thickness of implant affects angle of movement of the joint and structural integrity. Reducing the thickness of the neck section results in higher movement of the joint, but inversely affects its structural integrity. The 3D scanned implant has a neck thickness of 14.6 mm, and data from literature suggest that the best movement angle is for 9 mm thickness of the implant. In order to redesign the available implant, five different models with a neck thickness between 9 and 14.6 mm are made. Obtained results show the thickness effects the stress distribution in a critical area.",
publisher = "Society for Structural Integrity and Life, Institute for Material Testing",
journal = "Structural Integrity and Life",
title = "Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant",
pages = "242-237",
number = "3",
volume = "19",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4195"
}

Mijatović, T., Milovanović, A., Sedmak, A., Milović, L.,& Čolić, K.. (2019). Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant. in Structural Integrity and Life
Society for Structural Integrity and Life, Institute for Material Testing., 19(3), 237-242.
https://hdl.handle.net/21.15107/rcub_technorep_4195

Mijatović T, Milovanović A, Sedmak A, Milović L, Čolić K. Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant. in Structural Integrity and Life. 2019;19(3):237-242.
https://hdl.handle.net/21.15107/rcub_technorep_4195 .

Mijatović, Tamara, Milovanović, Aleksa, Sedmak, Aleksandar, Milović, Ljubica, Čolić, Katarina, "Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant" in Structural Integrity and Life, 19, no. 3 (2019):237-242,
https://hdl.handle.net/21.15107/rcub_technorep_4195 .

TY  - JOUR
AU  - Mijatović, Tamara
AU  - Perić, Milica
AU  - Matović, Luka
AU  - Ristović, Marija
AU  - Drmanić, Saša
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3779
AB  - Six ester and amide derivates of 2,6-dimethyl-4-(substituted)-1,4-dihydropyridine-3,5-dicarboxylic acid have been synthesized in this paper, including: diethyl 2,6-dimethyl-4-phenyl-1,4-dihydropyridine-3,5-dicarboxylate, diethyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate, diethyl 2,6-dimethyl-4-(4-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate, diethyl 4-(2-hydroxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate, diethyl 4-(3-hydroxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate and diethyl 4-(4-hydroxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate. Obtained ester derivates were used afterwards as a starting compounds for synthesis of amide derivates, including: 2,6-dimethyl-4-phenyl-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide, 2,6-dimethyl-4-(3-nitrophenyl)-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide, 2,6-dimethyl-4-(4-nitrophenyl)-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide, 4-(2-hydroxyphenyl)-2,6-dimethyl-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide, 4-(3-hydroxyphenyl)-2,6-dimethyl-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide and 4-(4-hydroxyphenyl)-2,6-dimethyl-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide. Obtained compounds were characterized by melting point, elementary analysis and FT-IR spectroscopy. In order to determine the effect of the substituent, the antioxidative activity assay of obtained 1,4-dihydropyridines was performed by using the DPPH (1,1-diphenyl-2-picryl-hydrazyl) free radical scavenging method.
PB  - University of East Sarajevo, Faculty of Technology
T2  - Journal of Engineering & Processing Management
T1  - Sinteza, karakterizacija i ispitivanje antioksidativne aktivnosti estarskih i amidnih derivata 2,6-dimetil-4-supstituisane-1,4-dihidropiridin-3,5-dikarboksilne kiseline
EP  - 15
IS  - 2
SP  - 8
VL  - 10
DO  - 10.7251/JEPM181002008M
ER  - 

@article{
author = "Mijatović, Tamara and Perić, Milica and Matović, Luka and Ristović, Marija and Drmanić, Saša",
year = "2018",
abstract = "Six ester and amide derivates of 2,6-dimethyl-4-(substituted)-1,4-dihydropyridine-3,5-dicarboxylic acid have been synthesized in this paper, including: diethyl 2,6-dimethyl-4-phenyl-1,4-dihydropyridine-3,5-dicarboxylate, diethyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate, diethyl 2,6-dimethyl-4-(4-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate, diethyl 4-(2-hydroxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate, diethyl 4-(3-hydroxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate and diethyl 4-(4-hydroxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate. Obtained ester derivates were used afterwards as a starting compounds for synthesis of amide derivates, including: 2,6-dimethyl-4-phenyl-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide, 2,6-dimethyl-4-(3-nitrophenyl)-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide, 2,6-dimethyl-4-(4-nitrophenyl)-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide, 4-(2-hydroxyphenyl)-2,6-dimethyl-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide, 4-(3-hydroxyphenyl)-2,6-dimethyl-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide and 4-(4-hydroxyphenyl)-2,6-dimethyl-N3,N5-di(thiazol-2-yl)-1,4-dihydropyridine-3,5-dicarboxamide. Obtained compounds were characterized by melting point, elementary analysis and FT-IR spectroscopy. In order to determine the effect of the substituent, the antioxidative activity assay of obtained 1,4-dihydropyridines was performed by using the DPPH (1,1-diphenyl-2-picryl-hydrazyl) free radical scavenging method.",
publisher = "University of East Sarajevo, Faculty of Technology",
journal = "Journal of Engineering & Processing Management",
title = "Sinteza, karakterizacija i ispitivanje antioksidativne aktivnosti estarskih i amidnih derivata 2,6-dimetil-4-supstituisane-1,4-dihidropiridin-3,5-dikarboksilne kiseline",
pages = "15-8",
number = "2",
volume = "10",
doi = "10.7251/JEPM181002008M"
}

Mijatović, T., Perić, M., Matović, L., Ristović, M.,& Drmanić, S.. (2018). Sinteza, karakterizacija i ispitivanje antioksidativne aktivnosti estarskih i amidnih derivata 2,6-dimetil-4-supstituisane-1,4-dihidropiridin-3,5-dikarboksilne kiseline. in Journal of Engineering & Processing Management
University of East Sarajevo, Faculty of Technology., 10(2), 8-15.
https://doi.org/10.7251/JEPM181002008M

Mijatović T, Perić M, Matović L, Ristović M, Drmanić S. Sinteza, karakterizacija i ispitivanje antioksidativne aktivnosti estarskih i amidnih derivata 2,6-dimetil-4-supstituisane-1,4-dihidropiridin-3,5-dikarboksilne kiseline. in Journal of Engineering & Processing Management. 2018;10(2):8-15.
doi:10.7251/JEPM181002008M .

Mijatović, Tamara, Perić, Milica, Matović, Luka, Ristović, Marija, Drmanić, Saša, "Sinteza, karakterizacija i ispitivanje antioksidativne aktivnosti estarskih i amidnih derivata 2,6-dimetil-4-supstituisane-1,4-dihidropiridin-3,5-dikarboksilne kiseline" in Journal of Engineering & Processing Management, 10, no. 2 (2018):8-15,
https://doi.org/10.7251/JEPM181002008M . .

TY  - JOUR
AU  - Čolić, Katarina
AU  - Gubeljak, Nenad
AU  - Burzić, Meri
AU  - Sedmak, Aleksandar
AU  - Mijatović, Tamara
AU  - Milovanović, Aleksa
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5814
AB  - In this paper are presented experimental analyses of the behaviour of 316L stainless steel in regard to fracture, according to standard methods of investigation on modified tensile C(T) specimens. The S316L alloy is selected for this experimental analysis, often used in many engineering applications. This alloy is not prone to corrosion as other austenitic steels with a higher share of carbon. Results show that material behaviour, in terms of dependence of stress intensity factor (SIF) value relative to thickness of the plate, is necessary to assume with a different model when the specimen thickness is very small. Application of standards in the field of investigation of material resistance to fracture allow simultaneous determination and connection of several fracture mechanics parameters.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Analysis of fracture behaviour of thin s316l stainless steel plates
EP  - 216
IS  - 3
SP  - 211
VL  - 17
UR  - https://hdl.handle.net/21.15107/rcub_machinery_2732
ER  - 

@article{
author = "Čolić, Katarina and Gubeljak, Nenad and Burzić, Meri and Sedmak, Aleksandar and Mijatović, Tamara and Milovanović, Aleksa",
year = "2017",
abstract = "In this paper are presented experimental analyses of the behaviour of 316L stainless steel in regard to fracture, according to standard methods of investigation on modified tensile C(T) specimens. The S316L alloy is selected for this experimental analysis, often used in many engineering applications. This alloy is not prone to corrosion as other austenitic steels with a higher share of carbon. Results show that material behaviour, in terms of dependence of stress intensity factor (SIF) value relative to thickness of the plate, is necessary to assume with a different model when the specimen thickness is very small. Application of standards in the field of investigation of material resistance to fracture allow simultaneous determination and connection of several fracture mechanics parameters.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Analysis of fracture behaviour of thin s316l stainless steel plates",
pages = "216-211",
number = "3",
volume = "17",
url = "https://hdl.handle.net/21.15107/rcub_machinery_2732"
}

Čolić, K., Gubeljak, N., Burzić, M., Sedmak, A., Mijatović, T.,& Milovanović, A.. (2017). Analysis of fracture behaviour of thin s316l stainless steel plates. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 17(3), 211-216.
https://hdl.handle.net/21.15107/rcub_machinery_2732

Čolić K, Gubeljak N, Burzić M, Sedmak A, Mijatović T, Milovanović A. Analysis of fracture behaviour of thin s316l stainless steel plates. in Structural Integrity and Life. 2017;17(3):211-216.
https://hdl.handle.net/21.15107/rcub_machinery_2732 .

Čolić, Katarina, Gubeljak, Nenad, Burzić, Meri, Sedmak, Aleksandar, Mijatović, Tamara, Milovanović, Aleksa, "Analysis of fracture behaviour of thin s316l stainless steel plates" in Structural Integrity and Life, 17, no. 3 (2017):211-216,
https://hdl.handle.net/21.15107/rcub_machinery_2732 .