TY  - JOUR
AU  - Milovanović, Aleksa
AU  - Montanari, Matteo
AU  - Golubović, Zorana
AU  - Marghitas, Mihai
AU  - Spagnoli, Andrea
AU  - Brighenti, Roberto
AU  - Sedmak, Aleksandar
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7785
AB  - In recent years, Additive Manufacturing (AM) has become an increasingly popular method in industrial
applications for fabricating components with complex geometries, offering several benefits over traditional
(subtractive) manufacturing methods. Among all available AM technologies, ‘‘vat photopolymerization’’ is still
a reliable approach for manufacturing high-resolution components at relatively small costs. This particular
AM technology is based on the photopolymerization process where 3D objects are created by light-induced
solidification and it has been broadly developed and used in the past decades. Depending on the employed
light source there are three different subtypes of this technology, namely: SLA, DLP, and mSLA. Among all
three listed, the Masked Stereolithography Apparatus (mSLA) technology has emerged as a promising approach
due to the much simpler AM machine construction compared to the other two. However, the mechanical
properties of mSLA components have not been studied extensively, hence there is a lack of knowledge of
how AM process parameters and post-processing treatments affect the final mechanical properties of mSLA
components. This work presents an experimental investigation of the compressive and flexural mechanical
responses of components produced through this relatively new AM technology. A series of static and cyclic
tests were conducted with varying layer thickness and post-curing times. It is demonstrated that a thorough
optimization of the mentioned variables is required to obtain parts with the desired mechanical properties.
PB  - Elsevier
T2  - Theoretical and Applied Fracture Mechanics
T1  - Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology
IS  - 104406
VL  - 131
DO  - 10.1016/j.tafmec.2024.104406
ER  - 

@article{
author = "Milovanović, Aleksa and Montanari, Matteo and Golubović, Zorana and Marghitas, Mihai and Spagnoli, Andrea and Brighenti, Roberto and Sedmak, Aleksandar",
year = "2024",
abstract = "In recent years, Additive Manufacturing (AM) has become an increasingly popular method in industrial
applications for fabricating components with complex geometries, offering several benefits over traditional
(subtractive) manufacturing methods. Among all available AM technologies, ‘‘vat photopolymerization’’ is still
a reliable approach for manufacturing high-resolution components at relatively small costs. This particular
AM technology is based on the photopolymerization process where 3D objects are created by light-induced
solidification and it has been broadly developed and used in the past decades. Depending on the employed
light source there are three different subtypes of this technology, namely: SLA, DLP, and mSLA. Among all
three listed, the Masked Stereolithography Apparatus (mSLA) technology has emerged as a promising approach
due to the much simpler AM machine construction compared to the other two. However, the mechanical
properties of mSLA components have not been studied extensively, hence there is a lack of knowledge of
how AM process parameters and post-processing treatments affect the final mechanical properties of mSLA
components. This work presents an experimental investigation of the compressive and flexural mechanical
responses of components produced through this relatively new AM technology. A series of static and cyclic
tests were conducted with varying layer thickness and post-curing times. It is demonstrated that a thorough
optimization of the mentioned variables is required to obtain parts with the desired mechanical properties.",
publisher = "Elsevier",
journal = "Theoretical and Applied Fracture Mechanics",
title = "Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology",
number = "104406",
volume = "131",
doi = "10.1016/j.tafmec.2024.104406"
}

Milovanović, A., Montanari, M., Golubović, Z., Marghitas, M., Spagnoli, A., Brighenti, R.,& Sedmak, A.. (2024). Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology. in Theoretical and Applied Fracture Mechanics
Elsevier., 131(104406).
https://doi.org/10.1016/j.tafmec.2024.104406

Milovanović A, Montanari M, Golubović Z, Marghitas M, Spagnoli A, Brighenti R, Sedmak A. Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology. in Theoretical and Applied Fracture Mechanics. 2024;131(104406).
doi:10.1016/j.tafmec.2024.104406 .

Milovanović, Aleksa, Montanari, Matteo, Golubović, Zorana, Marghitas, Mihai, Spagnoli, Andrea, Brighenti, Roberto, Sedmak, Aleksandar, "Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology" in Theoretical and Applied Fracture Mechanics, 131, no. 104406 (2024),
https://doi.org/10.1016/j.tafmec.2024.104406 . .

TY  - CONF
AU  - Milovanović, Aleksa
AU  - Galațanu, Sergiu-Valentin
AU  - Sedmak, Aleksandar
AU  - Marsavina, Liviu
AU  - Trajković, Isaak
AU  - Popa, Cosmin-Florin
AU  - Milošević, Miloš
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7780
AB  - Polylactic Acid (PLA) is a widely used material in Fused Deposition Modeling (FDM) technology. Additive Manufacturing (AM) parameters are known to have an influence on the mechanical properties of final components. In FDM, the layer thickness is an influencing parameter providing overall better mechanical properties with lower layer thickness values. In that case, the air gaps created between layers and raster lines have a lower share in total volume. However, layer over-compression might be an issue when choosing the lowest layer thickness options. This research paper investigates the impact properties of PLA material with variations in layer thickness namely, 0.1, 0.2, and 0.3 mm are considered here. Charpy tests were used for the impact property assessment, and all specimens were prepared with 100% infill percentage and honeycomb infill structure. Worth mentioning is that specimens have AMed notches. The impact tests were carried out on 7 specimens per batch (a total of 21 specimens). Therefore, obtained impact results from an instrumented pendulum were observed between groups to have an insight into the beneficial influence of lower layer thickness on impact properties and lower result scatter that finer layer resolution should produce.
PB  - Elsevier
C3  - Procedia Structural Integrity
T1  - Layer thickness influence on impact properties of FDM printed PLA material
EP  - 197
SP  - 190
VL  - 56
DO  - 10.1016/j.prostr.2024.02.055
ER  - 

@conference{
author = "Milovanović, Aleksa and Galațanu, Sergiu-Valentin and Sedmak, Aleksandar and Marsavina, Liviu and Trajković, Isaak and Popa, Cosmin-Florin and Milošević, Miloš",
year = "2024",
abstract = "Polylactic Acid (PLA) is a widely used material in Fused Deposition Modeling (FDM) technology. Additive Manufacturing (AM) parameters are known to have an influence on the mechanical properties of final components. In FDM, the layer thickness is an influencing parameter providing overall better mechanical properties with lower layer thickness values. In that case, the air gaps created between layers and raster lines have a lower share in total volume. However, layer over-compression might be an issue when choosing the lowest layer thickness options. This research paper investigates the impact properties of PLA material with variations in layer thickness namely, 0.1, 0.2, and 0.3 mm are considered here. Charpy tests were used for the impact property assessment, and all specimens were prepared with 100% infill percentage and honeycomb infill structure. Worth mentioning is that specimens have AMed notches. The impact tests were carried out on 7 specimens per batch (a total of 21 specimens). Therefore, obtained impact results from an instrumented pendulum were observed between groups to have an insight into the beneficial influence of lower layer thickness on impact properties and lower result scatter that finer layer resolution should produce.",
publisher = "Elsevier",
journal = "Procedia Structural Integrity",
title = "Layer thickness influence on impact properties of FDM printed PLA material",
pages = "197-190",
volume = "56",
doi = "10.1016/j.prostr.2024.02.055"
}

Milovanović, A., Galațanu, S., Sedmak, A., Marsavina, L., Trajković, I., Popa, C.,& Milošević, M.. (2024). Layer thickness influence on impact properties of FDM printed PLA material. in Procedia Structural Integrity
Elsevier., 56, 190-197.
https://doi.org/10.1016/j.prostr.2024.02.055

Milovanović A, Galațanu S, Sedmak A, Marsavina L, Trajković I, Popa C, Milošević M. Layer thickness influence on impact properties of FDM printed PLA material. in Procedia Structural Integrity. 2024;56:190-197.
doi:10.1016/j.prostr.2024.02.055 .

Milovanović, Aleksa, Galațanu, Sergiu-Valentin, Sedmak, Aleksandar, Marsavina, Liviu, Trajković, Isaak, Popa, Cosmin-Florin, Milošević, Miloš, "Layer thickness influence on impact properties of FDM printed PLA material" in Procedia Structural Integrity, 56 (2024):190-197,
https://doi.org/10.1016/j.prostr.2024.02.055 . .

TY  - JOUR
AU  - Jevtić, Ivana
AU  - Mladenović, Goran
AU  - Milošević, Miloš
AU  - Milovanović, Aleksa
AU  - Travica, Milan
AU  - Trajković, Isaak
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7764
AB  - The objective of this study is to examine the accuracy of dimensional measurements for parts produced using Additive Manufacturing (AM) technology. The specific 3D printer employed in this research is Fuse 1 (FormLabs, Summerville, MA). The printer operates on the Selective Laser Sintering (SLS) method, enabling the simultaneous creation of objects with diverse shapes and sizes, as long as they are printed at a minimum separation distance of 5 mm. The printing process involved a layer thickness of 110 microns. To assess the dimensional accuracy, a particular type of specimen adhering to the ISO 604 standard for compressive specimens was analyzed. These compressive specimens possess dimensions of Ø10 × 20 mm. Four sets of specimens were fabricated, differing in their printing orientation (horizontal or vertical) and printing location (edge or middle of the powder bed). Polyamide (PA 12) was the chosen material for printing the specimens, known to exhibit compressive strength values of 13/24/55 MPa at 1%/2%/5% strain, respectively. After printing, the specimens were subjected to a 3D scanner Atos Core 200. The most significant deviations observed across all four series of specimens were primarily in terms of height, ranging from 0.1 to 0.15 mm. In the case of vertically printed specimens positioned in the middle of the powder bed, variations in the width of the specimens were also noted.
PB  - Springer
T2  - New Trends in Engineering Research, Proceedings of the International Conference of Experimental and Numerical Investigations and New Technologies, CNNTech 2023
T1  - Dimensional Accuracy of Compressive Specimens Obtained by SLS Technology
EP  - 213
SP  - 206
VL  - 792
DO  - 10.1007/978-3-031-46432-4_16
ER  - 

@article{
author = "Jevtić, Ivana and Mladenović, Goran and Milošević, Miloš and Milovanović, Aleksa and Travica, Milan and Trajković, Isaak",
year = "2024",
abstract = "The objective of this study is to examine the accuracy of dimensional measurements for parts produced using Additive Manufacturing (AM) technology. The specific 3D printer employed in this research is Fuse 1 (FormLabs, Summerville, MA). The printer operates on the Selective Laser Sintering (SLS) method, enabling the simultaneous creation of objects with diverse shapes and sizes, as long as they are printed at a minimum separation distance of 5 mm. The printing process involved a layer thickness of 110 microns. To assess the dimensional accuracy, a particular type of specimen adhering to the ISO 604 standard for compressive specimens was analyzed. These compressive specimens possess dimensions of Ø10 × 20 mm. Four sets of specimens were fabricated, differing in their printing orientation (horizontal or vertical) and printing location (edge or middle of the powder bed). Polyamide (PA 12) was the chosen material for printing the specimens, known to exhibit compressive strength values of 13/24/55 MPa at 1%/2%/5% strain, respectively. After printing, the specimens were subjected to a 3D scanner Atos Core 200. The most significant deviations observed across all four series of specimens were primarily in terms of height, ranging from 0.1 to 0.15 mm. In the case of vertically printed specimens positioned in the middle of the powder bed, variations in the width of the specimens were also noted.",
publisher = "Springer",
journal = "New Trends in Engineering Research, Proceedings of the International Conference of Experimental and Numerical Investigations and New Technologies, CNNTech 2023",
title = "Dimensional Accuracy of Compressive Specimens Obtained by SLS Technology",
pages = "213-206",
volume = "792",
doi = "10.1007/978-3-031-46432-4_16"
}

Jevtić, I., Mladenović, G., Milošević, M., Milovanović, A., Travica, M.,& Trajković, I.. (2024). Dimensional Accuracy of Compressive Specimens Obtained by SLS Technology. in New Trends in Engineering Research, Proceedings of the International Conference of Experimental and Numerical Investigations and New Technologies, CNNTech 2023
Springer., 792, 206-213.
https://doi.org/10.1007/978-3-031-46432-4_16

Jevtić I, Mladenović G, Milošević M, Milovanović A, Travica M, Trajković I. Dimensional Accuracy of Compressive Specimens Obtained by SLS Technology. in New Trends in Engineering Research, Proceedings of the International Conference of Experimental and Numerical Investigations and New Technologies, CNNTech 2023. 2024;792:206-213.
doi:10.1007/978-3-031-46432-4_16 .

Jevtić, Ivana, Mladenović, Goran, Milošević, Miloš, Milovanović, Aleksa, Travica, Milan, Trajković, Isaak, "Dimensional Accuracy of Compressive Specimens Obtained by SLS Technology" in New Trends in Engineering Research, Proceedings of the International Conference of Experimental and Numerical Investigations and New Technologies, CNNTech 2023, 792 (2024):206-213,
https://doi.org/10.1007/978-3-031-46432-4_16 . .

TY  - JOUR
AU  - Jevtić, Ivana
AU  - Stojanović, Jagoš
AU  - Milovanović, Aleksa
AU  - Trajković, Isaak
AU  - Milošević, Miloš
AU  - Mladenović, Goran
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7750
AB  - This research aims to determine how the orientation and placement of printing impacts the compressive strength of specimens manufactured by Selective Laser Sintering (SLS).
The research includes compressive specimens in which the CAD model dimensions are selected according to the ISO 604 standard, and specimen geometry Ø10x20 mm in bulk. All specimen configurations are additively manufactured in two different printing orientations, horizontal and vertical, and printed in the middle and on the edge of the powder bed. All specimens are additively manufactured using Polyamide 12 (PA 12) material on a Fuse 1 device (FormLabs, located in Summerville, MA). Compressive strength testing was carried out using a Shimadzu AGS-X universal testing machine (Shimadzu Corp., Kyoto, Japan).
T2  - STRUCTURAL INTEGRITY AND LIFE
T1  - PRINTING ORIENTATION AND PLACE INFLUENCING THE COMPRESSIVE STRENGTH OF POLYAMID 12 SPECIMENS OBTAINED BY SLS TECHNOLOGY
EP  - 7
IS  - 1
SP  - 3
VL  - 24
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7750
ER  - 

@article{
author = "Jevtić, Ivana and Stojanović, Jagoš and Milovanović, Aleksa and Trajković, Isaak and Milošević, Miloš and Mladenović, Goran",
year = "2024",
abstract = "This research aims to determine how the orientation and placement of printing impacts the compressive strength of specimens manufactured by Selective Laser Sintering (SLS).
The research includes compressive specimens in which the CAD model dimensions are selected according to the ISO 604 standard, and specimen geometry Ø10x20 mm in bulk. All specimen configurations are additively manufactured in two different printing orientations, horizontal and vertical, and printed in the middle and on the edge of the powder bed. All specimens are additively manufactured using Polyamide 12 (PA 12) material on a Fuse 1 device (FormLabs, located in Summerville, MA). Compressive strength testing was carried out using a Shimadzu AGS-X universal testing machine (Shimadzu Corp., Kyoto, Japan).",
journal = "STRUCTURAL INTEGRITY AND LIFE",
title = "PRINTING ORIENTATION AND PLACE INFLUENCING THE COMPRESSIVE STRENGTH OF POLYAMID 12 SPECIMENS OBTAINED BY SLS TECHNOLOGY",
pages = "7-3",
number = "1",
volume = "24",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7750"
}

Jevtić, I., Stojanović, J., Milovanović, A., Trajković, I., Milošević, M.,& Mladenović, G.. (2024). PRINTING ORIENTATION AND PLACE INFLUENCING THE COMPRESSIVE STRENGTH OF POLYAMID 12 SPECIMENS OBTAINED BY SLS TECHNOLOGY. in STRUCTURAL INTEGRITY AND LIFE, 24(1), 3-7.
https://hdl.handle.net/21.15107/rcub_machinery_7750

Jevtić I, Stojanović J, Milovanović A, Trajković I, Milošević M, Mladenović G. PRINTING ORIENTATION AND PLACE INFLUENCING THE COMPRESSIVE STRENGTH OF POLYAMID 12 SPECIMENS OBTAINED BY SLS TECHNOLOGY. in STRUCTURAL INTEGRITY AND LIFE. 2024;24(1):3-7.
https://hdl.handle.net/21.15107/rcub_machinery_7750 .

Jevtić, Ivana, Stojanović, Jagoš, Milovanović, Aleksa, Trajković, Isaak, Milošević, Miloš, Mladenović, Goran, "PRINTING ORIENTATION AND PLACE INFLUENCING THE COMPRESSIVE STRENGTH OF POLYAMID 12 SPECIMENS OBTAINED BY SLS TECHNOLOGY" in STRUCTURAL INTEGRITY AND LIFE, 24, no. 1 (2024):3-7,
https://hdl.handle.net/21.15107/rcub_machinery_7750 .

TY  - CONF
AU  - Vasiljević, Marija
AU  - Pejčić, Danilo
AU  - Lekić, Luka
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
AU  - Milovanović, Aleksa
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7374
AB  - The subject of this paper is the experimental testing of 3D-printed polymer materials and their tensile strength. The focus was on testing polymer materials that are easily accessible, cost-effective, and do not have documented mechanical characteristics using inexpensive, hobbyist printers that are significantly cheaper compared to industrial printers. The specimens were manufactured according to the ISO 20753 standard using polylactic acid (PLA). The applied technology for producing these specimens was Fused Filament Fabrication. In this study, the specimens were printed on an Ender 3 printer in a direction perpendicular to the stretching direction to obtain maximum strength. The specimens were designed with a minimal number of walls to support the structure. The variable during this testing was the infill, which ranged from 15% to 100% using a grid geometric structure. After their fabrication, testing was conducted using a Shimadzu AGS - X 100kN universal testing machine with a crosshead speed of 1mm/min. Multiple tests were performed for each infill percentage to ensure reliable results. As expected, specimens with higher infill percentages exhibited greater tensile strength. However, a higher infill percentage also means increased material costs and product mass. The essence of 3D printing lies in not using 100% infill, as it allows for material and time savings, aiming to produce a balanced product with desirable characteristics and minimal mass.
It is planned that further research will focus on investigating the influence of infill pattern on tensile strength, the impact of temperature on tensile strength, and the adhesive forces between material layers.
PB  - Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia
C3  - International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor)
T1  - Investigation of the tensile strength of polymer materials obtained through 3D printing technologies
SP  - 92
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7374
ER  - 

@conference{
author = "Vasiljević, Marija and Pejčić, Danilo and Lekić, Luka and Popović, Mihajlo and Pjević, Miloš and Milovanović, Aleksa",
year = "2023",
abstract = "The subject of this paper is the experimental testing of 3D-printed polymer materials and their tensile strength. The focus was on testing polymer materials that are easily accessible, cost-effective, and do not have documented mechanical characteristics using inexpensive, hobbyist printers that are significantly cheaper compared to industrial printers. The specimens were manufactured according to the ISO 20753 standard using polylactic acid (PLA). The applied technology for producing these specimens was Fused Filament Fabrication. In this study, the specimens were printed on an Ender 3 printer in a direction perpendicular to the stretching direction to obtain maximum strength. The specimens were designed with a minimal number of walls to support the structure. The variable during this testing was the infill, which ranged from 15% to 100% using a grid geometric structure. After their fabrication, testing was conducted using a Shimadzu AGS - X 100kN universal testing machine with a crosshead speed of 1mm/min. Multiple tests were performed for each infill percentage to ensure reliable results. As expected, specimens with higher infill percentages exhibited greater tensile strength. However, a higher infill percentage also means increased material costs and product mass. The essence of 3D printing lies in not using 100% infill, as it allows for material and time savings, aiming to produce a balanced product with desirable characteristics and minimal mass.
It is planned that further research will focus on investigating the influence of infill pattern on tensile strength, the impact of temperature on tensile strength, and the adhesive forces between material layers.",
publisher = "Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia",
journal = "International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor)",
title = "Investigation of the tensile strength of polymer materials obtained through 3D printing technologies",
pages = "92",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7374"
}

Vasiljević, M., Pejčić, D., Lekić, L., Popović, M., Pjević, M.,& Milovanović, A.. (2023). Investigation of the tensile strength of polymer materials obtained through 3D printing technologies. in International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor)
Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia., 92.
https://hdl.handle.net/21.15107/rcub_machinery_7374

Vasiljević M, Pejčić D, Lekić L, Popović M, Pjević M, Milovanović A. Investigation of the tensile strength of polymer materials obtained through 3D printing technologies. in International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor). 2023;:92.
https://hdl.handle.net/21.15107/rcub_machinery_7374 .

Vasiljević, Marija, Pejčić, Danilo, Lekić, Luka, Popović, Mihajlo, Pjević, Miloš, Milovanović, Aleksa, "Investigation of the tensile strength of polymer materials obtained through 3D printing technologies" in International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor) (2023):92,
https://hdl.handle.net/21.15107/rcub_machinery_7374 .

TY  - CONF
AU  - Jevtić, Ivana
AU  - Mladenović, Goran
AU  - Milošević, Miloš
AU  - Trajković, Isaak
AU  - Milovanović, Aleksa
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7372
AB  - SLS technology is a popular choice in various industries worldwide because of its ability to produce complex geometry components with less effort when compared to conventional methods. The technology involves using materials in powder forms, such as polyamides (PA), polystyrenes, thermoplastic elastomers, and polyaryletherketones. In this study, the research focuses on compressive PA12 specimens with CAD model dimensions selected according to the ISO 604 standard, with bulk dimensions of Ø10x20 [mm]. The study utilizes a Fuse 1 (FormLabs, Summerville, MA) 3D printer that employs the SLS technology. This printer is capable of producing objects with different shapes and dimensions simultaneously, provided that they are printed at a minimum distance of 5 [mm] apart. The research involves producing four batches of specimens, each differing in printing orientation (i.e., horizontal and vertical) and printing location (i.e., printed on the edge and in the middle of the powder bed). The printed specimens are scanned, and the obtained scans are compared with the original CAD model in the GOM Inspect program. The highest deviations in all four specimen series are in height, ranging from 0.1 up to 0.15 mm. In the case of vertical specimens printed in the middle of the powder bed, there are also deviations in the width of the specimen.
PB  - Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia
C3  - International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor)
T1  - Deviations measurements of SLS PA material at compressive specimens
SP  - 8
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7372
ER  - 

@conference{
author = "Jevtić, Ivana and Mladenović, Goran and Milošević, Miloš and Trajković, Isaak and Milovanović, Aleksa",
year = "2023",
abstract = "SLS technology is a popular choice in various industries worldwide because of its ability to produce complex geometry components with less effort when compared to conventional methods. The technology involves using materials in powder forms, such as polyamides (PA), polystyrenes, thermoplastic elastomers, and polyaryletherketones. In this study, the research focuses on compressive PA12 specimens with CAD model dimensions selected according to the ISO 604 standard, with bulk dimensions of Ø10x20 [mm]. The study utilizes a Fuse 1 (FormLabs, Summerville, MA) 3D printer that employs the SLS technology. This printer is capable of producing objects with different shapes and dimensions simultaneously, provided that they are printed at a minimum distance of 5 [mm] apart. The research involves producing four batches of specimens, each differing in printing orientation (i.e., horizontal and vertical) and printing location (i.e., printed on the edge and in the middle of the powder bed). The printed specimens are scanned, and the obtained scans are compared with the original CAD model in the GOM Inspect program. The highest deviations in all four specimen series are in height, ranging from 0.1 up to 0.15 mm. In the case of vertical specimens printed in the middle of the powder bed, there are also deviations in the width of the specimen.",
publisher = "Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia",
journal = "International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor)",
title = "Deviations measurements of SLS PA material at compressive specimens",
pages = "8",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7372"
}

Jevtić, I., Mladenović, G., Milošević, M., Trajković, I.,& Milovanović, A.. (2023). Deviations measurements of SLS PA material at compressive specimens. in International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor)
Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia., 8.
https://hdl.handle.net/21.15107/rcub_machinery_7372

Jevtić I, Mladenović G, Milošević M, Trajković I, Milovanović A. Deviations measurements of SLS PA material at compressive specimens. in International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor). 2023;:8.
https://hdl.handle.net/21.15107/rcub_machinery_7372 .

Jevtić, Ivana, Mladenović, Goran, Milošević, Miloš, Trajković, Isaak, Milovanović, Aleksa, "Deviations measurements of SLS PA material at compressive specimens" in International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor) (2023):8,
https://hdl.handle.net/21.15107/rcub_machinery_7372 .

TY  - JOUR
AU  - Šulák, Ivo
AU  - Babinský, Tomáš
AU  - Chlupová, Alice
AU  - Milovanović, Aleksa
AU  - Náhlík, Luboš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7194
AB  - This study investigated the effect of building direction (BD) and three-step heat treatment on the microstructure and mechanical properties of a nickel-based superalloy Inconel 939 produced by additive manufacturing (AM), and it revealed the differences to the conventional cast superalloy. Tensile specimens were printed in horizontal and vertical BDs, and tensile tests were performed at room temperature, 700 °C and 800 °C. Thorough microstructural scrutiny conducted through light and electron microscopy revealed microstructural differences between AM and cast Inconel 939. The columnar grain structure with a preferential orientation of <001> was typical for AM alloy, whereas polyhedral grain without any specific orientation was typical for cast alloy. Experiments showed that the AM material had much better mechanical properties than the cast material. Heat treatment resulted in a formation of a fine dispersion of spherical γ′ nanoprecipitates, triggering a considerable increase in tensile strength and a drop in ductility.
PB  - Springer Nature
T2  - Journal of Mechanical Science and Technology
T1  - Effect of building direction and heat treatment on mechanical properties of Inconel 939 prepared by additive manufacturing
EP  - 1076
IS  - 3
SP  - 1071
VL  - 37
DO  - 10.1007/s12206-022-2101-7
ER  - 

@article{
author = "Šulák, Ivo and Babinský, Tomáš and Chlupová, Alice and Milovanović, Aleksa and Náhlík, Luboš",
year = "2023",
abstract = "This study investigated the effect of building direction (BD) and three-step heat treatment on the microstructure and mechanical properties of a nickel-based superalloy Inconel 939 produced by additive manufacturing (AM), and it revealed the differences to the conventional cast superalloy. Tensile specimens were printed in horizontal and vertical BDs, and tensile tests were performed at room temperature, 700 °C and 800 °C. Thorough microstructural scrutiny conducted through light and electron microscopy revealed microstructural differences between AM and cast Inconel 939. The columnar grain structure with a preferential orientation of <001> was typical for AM alloy, whereas polyhedral grain without any specific orientation was typical for cast alloy. Experiments showed that the AM material had much better mechanical properties than the cast material. Heat treatment resulted in a formation of a fine dispersion of spherical γ′ nanoprecipitates, triggering a considerable increase in tensile strength and a drop in ductility.",
publisher = "Springer Nature",
journal = "Journal of Mechanical Science and Technology",
title = "Effect of building direction and heat treatment on mechanical properties of Inconel 939 prepared by additive manufacturing",
pages = "1076-1071",
number = "3",
volume = "37",
doi = "10.1007/s12206-022-2101-7"
}

Šulák, I., Babinský, T., Chlupová, A., Milovanović, A.,& Náhlík, L.. (2023). Effect of building direction and heat treatment on mechanical properties of Inconel 939 prepared by additive manufacturing. in Journal of Mechanical Science and Technology
Springer Nature., 37(3), 1071-1076.
https://doi.org/10.1007/s12206-022-2101-7

Šulák I, Babinský T, Chlupová A, Milovanović A, Náhlík L. Effect of building direction and heat treatment on mechanical properties of Inconel 939 prepared by additive manufacturing. in Journal of Mechanical Science and Technology. 2023;37(3):1071-1076.
doi:10.1007/s12206-022-2101-7 .

Šulák, Ivo, Babinský, Tomáš, Chlupová, Alice, Milovanović, Aleksa, Náhlík, Luboš, "Effect of building direction and heat treatment on mechanical properties of Inconel 939 prepared by additive manufacturing" in Journal of Mechanical Science and Technology, 37, no. 3 (2023):1071-1076,
https://doi.org/10.1007/s12206-022-2101-7 . .

TY  - JOUR
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
AU  - Milovanović, Aleksa
AU  - Mladenović, Goran
AU  - Milošević, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7198
AB  - High demand for part customization shifts industries toward AM technologies. Part customization in high-volume manufacturing is developed to its limits, whereas low-volume production using AM is still economically unjustified. FDM technology is quite common in low-volume AM production, but the main issue is poor printing parameter optimization which may result in insufficient final part quality. The subject of this paper is the experimental determination of the optimal parameters for the PLA polymer FDM parts, focusing on nozzle temperature and printing speed. Part geometry and mechanical properties are evaluated for the temperature range of 170–210 °C and speeds of 40, 80, and 120 mm/min. Roughness measurements for part geometrical accuracy assessment and tensile tests for mechanical property estimation have shown the clear advantage of 190 °C and 40 mm/min over the other parameter combinations. However, for higher FDM process productivity 80 mm/min speed may also be considered with 190 °C.
PB  - Springer Nature
T2  - Journal of Mechanical Science and Technology
T1  - Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity
EP  - 706
IS  - 2
SP  - 697
VL  - 37
DO  - 10.1007/s12206-023-0113-6
ER  - 

@article{
author = "Popović, Mihajlo and Pjević, Miloš and Milovanović, Aleksa and Mladenović, Goran and Milošević, Miloš",
year = "2023",
abstract = "High demand for part customization shifts industries toward AM technologies. Part customization in high-volume manufacturing is developed to its limits, whereas low-volume production using AM is still economically unjustified. FDM technology is quite common in low-volume AM production, but the main issue is poor printing parameter optimization which may result in insufficient final part quality. The subject of this paper is the experimental determination of the optimal parameters for the PLA polymer FDM parts, focusing on nozzle temperature and printing speed. Part geometry and mechanical properties are evaluated for the temperature range of 170–210 °C and speeds of 40, 80, and 120 mm/min. Roughness measurements for part geometrical accuracy assessment and tensile tests for mechanical property estimation have shown the clear advantage of 190 °C and 40 mm/min over the other parameter combinations. However, for higher FDM process productivity 80 mm/min speed may also be considered with 190 °C.",
publisher = "Springer Nature",
journal = "Journal of Mechanical Science and Technology",
title = "Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity",
pages = "706-697",
number = "2",
volume = "37",
doi = "10.1007/s12206-023-0113-6"
}

Popović, M., Pjević, M., Milovanović, A., Mladenović, G.,& Milošević, M.. (2023). Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity. in Journal of Mechanical Science and Technology
Springer Nature., 37(2), 697-706.
https://doi.org/10.1007/s12206-023-0113-6

Popović M, Pjević M, Milovanović A, Mladenović G, Milošević M. Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity. in Journal of Mechanical Science and Technology. 2023;37(2):697-706.
doi:10.1007/s12206-023-0113-6 .

Popović, Mihajlo, Pjević, Miloš, Milovanović, Aleksa, Mladenović, Goran, Milošević, Miloš, "Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity" in Journal of Mechanical Science and Technology, 37, no. 2 (2023):697-706,
https://doi.org/10.1007/s12206-023-0113-6 . .

TY  - CONF
AU  - Smoljanić, Tamara
AU  - Sedmak, Simon
AU  - Milovanović, Aleksa
AU  - Milović, Ljubica
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7110
AB  - One of the most important aspects of materials typically used in biomedical engineering is their resistance to various unfavourable exploitation conditions, which greatly impact their work life. In terms of extreme conditions, two major factors include fatigue and corrosion, and a combination of these can significantly decrease the expected life of various implants. The focus of this paper will be on hip implants made of Ti-Al6-4V titanium alloy, a material commonly used in such applications, due to its resistance to corrosion and bio-compatibility. Research shown here was based on experimental testing of said alloy in order to determine its mechanical properties under different working environments, including normal, salty and wet conditions. These properties were then used as input data for Extended Finite Element method (XFEM) numerical simulations of fatigue crack growth in hip implants with various geometries. This was of particular interest since specimens which were kept in salty and wet environment had a slight degradation of yield stress and tensile strength, but an increase in plasticity.
C3  - Procedia Structural Integrity
T1  - Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions
EP  - 221
SP  - 215
VL  - 48
DO  - 10.1016/j.prostr.2023.07.151
ER  - 

@conference{
author = "Smoljanić, Tamara and Sedmak, Simon and Milovanović, Aleksa and Milović, Ljubica",
year = "2023",
abstract = "One of the most important aspects of materials typically used in biomedical engineering is their resistance to various unfavourable exploitation conditions, which greatly impact their work life. In terms of extreme conditions, two major factors include fatigue and corrosion, and a combination of these can significantly decrease the expected life of various implants. The focus of this paper will be on hip implants made of Ti-Al6-4V titanium alloy, a material commonly used in such applications, due to its resistance to corrosion and bio-compatibility. Research shown here was based on experimental testing of said alloy in order to determine its mechanical properties under different working environments, including normal, salty and wet conditions. These properties were then used as input data for Extended Finite Element method (XFEM) numerical simulations of fatigue crack growth in hip implants with various geometries. This was of particular interest since specimens which were kept in salty and wet environment had a slight degradation of yield stress and tensile strength, but an increase in plasticity.",
journal = "Procedia Structural Integrity",
title = "Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions",
pages = "221-215",
volume = "48",
doi = "10.1016/j.prostr.2023.07.151"
}

Smoljanić, T., Sedmak, S., Milovanović, A.,& Milović, L.. (2023). Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions. in Procedia Structural Integrity, 48, 215-221.
https://doi.org/10.1016/j.prostr.2023.07.151

Smoljanić T, Sedmak S, Milovanović A, Milović L. Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions. in Procedia Structural Integrity. 2023;48:215-221.
doi:10.1016/j.prostr.2023.07.151 .

Smoljanić, Tamara, Sedmak, Simon, Milovanović, Aleksa, Milović, Ljubica, "Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions" in Procedia Structural Integrity, 48 (2023):215-221,
https://doi.org/10.1016/j.prostr.2023.07.151 . .

TY  - JOUR
AU  - Milovanović, Aleksa
AU  - Golubović, Zorana
AU  - Kirin, Snežana
AU  - Babinsky, Tomas
AU  - Šulak, Ivo
AU  - Milošević, Miloš
AU  - Sedmak, Aleksandar
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7147
AB  - Polypropylene (PP) is a relatively new material in fused deposition modeling
(FDM) technology. The main feature of this material is its ability to significantly elongate under
applied load, unlike any other thermoplastic material used in FDM technology. Not much research has been conducted on this FDM material so far, hence, the subject of this paper is the
investigation of printing parameters’ influence on PP tensile properties. Targeted parameters are
layer height, infill density, and the orientation of raster lines, resulting in four different manufacturing regimes. To have a better insight into the experimental results, the data are analysed using ANOVA statistical method with Tukey HSD post hoc test. Obtained statistical results have proven the printing parameter’s influence on tensile results, emphasizing the influence on elastic modulus. Here, Tukey test results show the maximal number of homogeneous subsets evidencing that all printing parameters have an influence on elastic modulus values.
T2  - Journal of Mechanical Science and Technology
T1  - Manufacturing parameter influence on FDM polypropylene tensile properties
VL  - 37
DO  - 10.1007/s12206-023-2305-5
ER  - 

@article{
author = "Milovanović, Aleksa and Golubović, Zorana and Kirin, Snežana and Babinsky, Tomas and Šulak, Ivo and Milošević, Miloš and Sedmak, Aleksandar",
year = "2023",
abstract = "Polypropylene (PP) is a relatively new material in fused deposition modeling
(FDM) technology. The main feature of this material is its ability to significantly elongate under
applied load, unlike any other thermoplastic material used in FDM technology. Not much research has been conducted on this FDM material so far, hence, the subject of this paper is the
investigation of printing parameters’ influence on PP tensile properties. Targeted parameters are
layer height, infill density, and the orientation of raster lines, resulting in four different manufacturing regimes. To have a better insight into the experimental results, the data are analysed using ANOVA statistical method with Tukey HSD post hoc test. Obtained statistical results have proven the printing parameter’s influence on tensile results, emphasizing the influence on elastic modulus. Here, Tukey test results show the maximal number of homogeneous subsets evidencing that all printing parameters have an influence on elastic modulus values.",
journal = "Journal of Mechanical Science and Technology",
title = "Manufacturing parameter influence on FDM polypropylene tensile properties",
volume = "37",
doi = "10.1007/s12206-023-2305-5"
}

Milovanović, A., Golubović, Z., Kirin, S., Babinsky, T., Šulak, I., Milošević, M.,& Sedmak, A.. (2023). Manufacturing parameter influence on FDM polypropylene tensile properties. in Journal of Mechanical Science and Technology, 37.
https://doi.org/10.1007/s12206-023-2305-5

Milovanović A, Golubović Z, Kirin S, Babinsky T, Šulak I, Milošević M, Sedmak A. Manufacturing parameter influence on FDM polypropylene tensile properties. in Journal of Mechanical Science and Technology. 2023;37.
doi:10.1007/s12206-023-2305-5 .

Milovanović, Aleksa, Golubović, Zorana, Kirin, Snežana, Babinsky, Tomas, Šulak, Ivo, Milošević, Miloš, Sedmak, Aleksandar, "Manufacturing parameter influence on FDM polypropylene tensile properties" in Journal of Mechanical Science and Technology, 37 (2023),
https://doi.org/10.1007/s12206-023-2305-5 . .

TY  - JOUR
AU  - Smoljanić, Tamara
AU  - Milovanović, Aleksa
AU  - Sedmak, Simon
AU  - Milović, Ljubica
AU  - Sedmak, Aleksandar
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7428
AB  - This paper presents development of numerical models for simulation of the behaviour of titanium alloy hip implants under static and dynamic loads, which is a part of extensive research involving the structural integrity of such implants under various loading conditions, as well as under exposure to aggressive environments. Numerical models were created in ABAQUS and ANSYS software packages, in order to determine the stress/strain distribution, the number of cycles to failure and stress intensity factors, for two different hip implant geometries. The ABAQUS models were used for static and ANSYS models for dynamic loads. The next stage in this analysis involved comparing these two cases, to determine the one with the better behaviour, depending on the exploitation conditions, which can greatly vary between different groups of patients. The targeted patient weight for all numerical simulations was 90 kg, while failure assessment diagrams were made for both implant geometries, assuming a crack length of 1 mm.
T2  - HEMIJSKA INDUSTRIJA (Chemical Industry)
T1  - Numerical simulation of titanium alloy hip replacement implants behaviour under static and dynamic loads
DO  - 10.2298/HEMIND221118026S
ER  - 

@article{
author = "Smoljanić, Tamara and Milovanović, Aleksa and Sedmak, Simon and Milović, Ljubica and Sedmak, Aleksandar",
year = "2023",
abstract = "This paper presents development of numerical models for simulation of the behaviour of titanium alloy hip implants under static and dynamic loads, which is a part of extensive research involving the structural integrity of such implants under various loading conditions, as well as under exposure to aggressive environments. Numerical models were created in ABAQUS and ANSYS software packages, in order to determine the stress/strain distribution, the number of cycles to failure and stress intensity factors, for two different hip implant geometries. The ABAQUS models were used for static and ANSYS models for dynamic loads. The next stage in this analysis involved comparing these two cases, to determine the one with the better behaviour, depending on the exploitation conditions, which can greatly vary between different groups of patients. The targeted patient weight for all numerical simulations was 90 kg, while failure assessment diagrams were made for both implant geometries, assuming a crack length of 1 mm.",
journal = "HEMIJSKA INDUSTRIJA (Chemical Industry)",
title = "Numerical simulation of titanium alloy hip replacement implants behaviour under static and dynamic loads",
doi = "10.2298/HEMIND221118026S"
}

Smoljanić, T., Milovanović, A., Sedmak, S., Milović, L.,& Sedmak, A.. (2023). Numerical simulation of titanium alloy hip replacement implants behaviour under static and dynamic loads. in HEMIJSKA INDUSTRIJA (Chemical Industry).
https://doi.org/10.2298/HEMIND221118026S

Smoljanić T, Milovanović A, Sedmak S, Milović L, Sedmak A. Numerical simulation of titanium alloy hip replacement implants behaviour under static and dynamic loads. in HEMIJSKA INDUSTRIJA (Chemical Industry). 2023;.
doi:10.2298/HEMIND221118026S .

Smoljanić, Tamara, Milovanović, Aleksa, Sedmak, Simon, Milović, Ljubica, Sedmak, Aleksandar, "Numerical simulation of titanium alloy hip replacement implants behaviour under static and dynamic loads" in HEMIJSKA INDUSTRIJA (Chemical Industry) (2023),
https://doi.org/10.2298/HEMIND221118026S . .

TY  - JOUR
AU  - Jevtić, Ivana
AU  - Mladenović, Goran
AU  - Milovanović, Aleksa
AU  - Trajković, Isaak
AU  - Đurković, Marija
AU  - Korolija, Nenad
AU  - Milošević, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7423
AB  - This article aims to investigate the mechanical characteristics of specimens fabricated using Selective Laser Sintering technology. The research covers flexural specimens, produced by PA12 materials. CAD model dimensions were selected according to the ISO 178 standard, and the chosen specimen geometry is 96 x 8 x 4 [mm] in bulk. All specimens were produced using a specialized machine Fuse 1 (FormLabs, Summerville, MA). Four specimen batches were produced, each with a different printing orientation (i.e. vertical and horizontal) and location on the printing plate (i.e. in the middle and on the edge of the powder bed). The specimens are tested using a Shimadzu universal machine for testing the mechanical characteristics of materials, AGS-X 100 kN, with a unique additional tool for testing 3-point bending specimens.
T2  - Science of Sintering
T1  - The influence of printing orientation on the flexural strength of PA 12 specimens produced by SLS
DO  - 10.2298/SOS230508031J
ER  - 

@article{
author = "Jevtić, Ivana and Mladenović, Goran and Milovanović, Aleksa and Trajković, Isaak and Đurković, Marija and Korolija, Nenad and Milošević, Miloš",
year = "2023",
abstract = "This article aims to investigate the mechanical characteristics of specimens fabricated using Selective Laser Sintering technology. The research covers flexural specimens, produced by PA12 materials. CAD model dimensions were selected according to the ISO 178 standard, and the chosen specimen geometry is 96 x 8 x 4 [mm] in bulk. All specimens were produced using a specialized machine Fuse 1 (FormLabs, Summerville, MA). Four specimen batches were produced, each with a different printing orientation (i.e. vertical and horizontal) and location on the printing plate (i.e. in the middle and on the edge of the powder bed). The specimens are tested using a Shimadzu universal machine for testing the mechanical characteristics of materials, AGS-X 100 kN, with a unique additional tool for testing 3-point bending specimens.",
journal = "Science of Sintering",
title = "The influence of printing orientation on the flexural strength of PA 12 specimens produced by SLS",
doi = "10.2298/SOS230508031J"
}

Jevtić, I., Mladenović, G., Milovanović, A., Trajković, I., Đurković, M., Korolija, N.,& Milošević, M.. (2023). The influence of printing orientation on the flexural strength of PA 12 specimens produced by SLS. in Science of Sintering.
https://doi.org/10.2298/SOS230508031J

Jevtić I, Mladenović G, Milovanović A, Trajković I, Đurković M, Korolija N, Milošević M. The influence of printing orientation on the flexural strength of PA 12 specimens produced by SLS. in Science of Sintering. 2023;.
doi:10.2298/SOS230508031J .

Jevtić, Ivana, Mladenović, Goran, Milovanović, Aleksa, Trajković, Isaak, Đurković, Marija, Korolija, Nenad, Milošević, Miloš, "The influence of printing orientation on the flexural strength of PA 12 specimens produced by SLS" in Science of Sintering (2023),
https://doi.org/10.2298/SOS230508031J . .

TY  - JOUR
AU  - Milovanović, Aleksa
AU  - Golubović, Zorana
AU  - Kirin, Snežana
AU  - Babinský, Tomáš
AU  - Šulák, Ivo
AU  - Milošević, Miloš
AU  - Sedmak, Aleksandar
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7643
AB  - Polypropylene (PP) is a relatively new material in fused deposition modeling (FDM) technology. The main feature of this material is its ability to significantly elongate under applied load, unlike any other thermoplastic material used in FDM technology. Not much research has been conducted on this FDM material so far, hence, the subject of this paper is the investigation of printing parameters’ influence on PP tensile properties. Targeted parameters are layer height, infill density, and the orientation of raster lines, resulting in four different manufacturing regimes. To have a better insight into the experimental results, the data are analysed using ANOVA statistical method with Tukey HSD post hoc test. Obtained statistical results have proven the printing parameter’s influence on tensile results, emphasizing the influence on elastic modulus. Here, Tukey test results show the maximal number of homogeneous subsets evidencing that all printing parameters have an influence on elastic modulus values.
T2  - Journal of Mechanical Science and Technology
T1  - Manufacturing parameter influence on FDM polypropylene tensile properties
EP  - 7
IS  - 11
SP  - 1
VL  - 37
DO  - 10.1007/s12206-023-2305-5
ER  - 

@article{
author = "Milovanović, Aleksa and Golubović, Zorana and Kirin, Snežana and Babinský, Tomáš and Šulák, Ivo and Milošević, Miloš and Sedmak, Aleksandar",
year = "2023",
abstract = "Polypropylene (PP) is a relatively new material in fused deposition modeling (FDM) technology. The main feature of this material is its ability to significantly elongate under applied load, unlike any other thermoplastic material used in FDM technology. Not much research has been conducted on this FDM material so far, hence, the subject of this paper is the investigation of printing parameters’ influence on PP tensile properties. Targeted parameters are layer height, infill density, and the orientation of raster lines, resulting in four different manufacturing regimes. To have a better insight into the experimental results, the data are analysed using ANOVA statistical method with Tukey HSD post hoc test. Obtained statistical results have proven the printing parameter’s influence on tensile results, emphasizing the influence on elastic modulus. Here, Tukey test results show the maximal number of homogeneous subsets evidencing that all printing parameters have an influence on elastic modulus values.",
journal = "Journal of Mechanical Science and Technology",
title = "Manufacturing parameter influence on FDM polypropylene tensile properties",
pages = "7-1",
number = "11",
volume = "37",
doi = "10.1007/s12206-023-2305-5"
}

Milovanović, A., Golubović, Z., Kirin, S., Babinský, T., Šulák, I., Milošević, M.,& Sedmak, A.. (2023). Manufacturing parameter influence on FDM polypropylene tensile properties. in Journal of Mechanical Science and Technology, 37(11), 1-7.
https://doi.org/10.1007/s12206-023-2305-5

Milovanović A, Golubović Z, Kirin S, Babinský T, Šulák I, Milošević M, Sedmak A. Manufacturing parameter influence on FDM polypropylene tensile properties. in Journal of Mechanical Science and Technology. 2023;37(11):1-7.
doi:10.1007/s12206-023-2305-5 .

Milovanović, Aleksa, Golubović, Zorana, Kirin, Snežana, Babinský, Tomáš, Šulák, Ivo, Milošević, Miloš, Sedmak, Aleksandar, "Manufacturing parameter influence on FDM polypropylene tensile properties" in Journal of Mechanical Science and Technology, 37, no. 11 (2023):1-7,
https://doi.org/10.1007/s12206-023-2305-5 . .

TY  - CONF
AU  - Milovanović, Aleksa
AU  - Babinský, Tomáš
AU  - Sedmak, Aleksandar
AU  - Milošević, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7634
AB  - The structural life of a functional component includes the period when the component has developed some sort of defect (e.g., crack). In such cases, damage-tolerant design utilizes fracture mechanics parameters for the assessment of the component’s structural capability to withstand loads expected in the exploitation. One of the most fundamental parameters is the stress intensity factor, which characterizes the stress state near the crack tip. The critical value of this parameter is called fracture toughness, and it is the most suitable failure criterion for brittle materials. One of the most used materials in fused deposition modeling (FDM) technology is PLA polymer, known for its brittle behaviour. Due to good mechanical properties in comparison with other FDM polymers and excellent biocompatibility, the PLA material is not just a material for prototyping purposes but may also serve as a material for functional applications in medicine, food packaging, etc. The FDM printing parameters influence the final component's mechanical properties. The aim of this paper is to assess the impact of printing parameters, such as layer height, infill density, and raster orientation, on fracture toughness values.
C3  - International scientific and professional conference POLITEHNIKA 2023 (Belgrade, 15th December 2023)
T1  - PRINTING PARAMETER IMPACT ON PLA MATERIAL FRACTURE TOUGHNESS RESULTS
EP  - 525
SP  - 520
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7634
ER  - 

@conference{
author = "Milovanović, Aleksa and Babinský, Tomáš and Sedmak, Aleksandar and Milošević, Miloš",
year = "2023",
abstract = "The structural life of a functional component includes the period when the component has developed some sort of defect (e.g., crack). In such cases, damage-tolerant design utilizes fracture mechanics parameters for the assessment of the component’s structural capability to withstand loads expected in the exploitation. One of the most fundamental parameters is the stress intensity factor, which characterizes the stress state near the crack tip. The critical value of this parameter is called fracture toughness, and it is the most suitable failure criterion for brittle materials. One of the most used materials in fused deposition modeling (FDM) technology is PLA polymer, known for its brittle behaviour. Due to good mechanical properties in comparison with other FDM polymers and excellent biocompatibility, the PLA material is not just a material for prototyping purposes but may also serve as a material for functional applications in medicine, food packaging, etc. The FDM printing parameters influence the final component's mechanical properties. The aim of this paper is to assess the impact of printing parameters, such as layer height, infill density, and raster orientation, on fracture toughness values.",
journal = "International scientific and professional conference POLITEHNIKA 2023 (Belgrade, 15th December 2023)",
title = "PRINTING PARAMETER IMPACT ON PLA MATERIAL FRACTURE TOUGHNESS RESULTS",
pages = "525-520",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7634"
}

Milovanović, A., Babinský, T., Sedmak, A.,& Milošević, M.. (2023). PRINTING PARAMETER IMPACT ON PLA MATERIAL FRACTURE TOUGHNESS RESULTS. in International scientific and professional conference POLITEHNIKA 2023 (Belgrade, 15th December 2023), 520-525.
https://hdl.handle.net/21.15107/rcub_machinery_7634

Milovanović A, Babinský T, Sedmak A, Milošević M. PRINTING PARAMETER IMPACT ON PLA MATERIAL FRACTURE TOUGHNESS RESULTS. in International scientific and professional conference POLITEHNIKA 2023 (Belgrade, 15th December 2023). 2023;:520-525.
https://hdl.handle.net/21.15107/rcub_machinery_7634 .

Milovanović, Aleksa, Babinský, Tomáš, Sedmak, Aleksandar, Milošević, Miloš, "PRINTING PARAMETER IMPACT ON PLA MATERIAL FRACTURE TOUGHNESS RESULTS" in International scientific and professional conference POLITEHNIKA 2023 (Belgrade, 15th December 2023) (2023):520-525,
https://hdl.handle.net/21.15107/rcub_machinery_7634 .

TY  - CONF
AU  - Jevtić, Ivana
AU  - Mladenović, Goran
AU  - Milošević, Miloš
AU  - Milovanović, Aleksa
AU  - Trajković, Isaak
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7012
AB  - SLS technology has become popular in various industries due to its ability to produce
complex components with less effort than traditional methods. The study used PA 12, a
commonly used material in SLS printing, to create three types of specimens that were tested
for their mechanical characteristics. The specimens were designed based on ISO standards
(i.e. ISO 178, ISO 527-2, ISO 604) and printed on the Fuse 1 (FormLabs, Summerville, MA)
3D printer in four batches. These batches differed according to the printing orientation (i.e.
horizontal and vertical) and the printing location (i.e. in the middle and on the edge of the
powder bed). The printed specimens were then tested on subjected to a standard tensile
testing machine (SHIMADZU AGS-X 100kN).
The study found that the specimens printed according to ISO 178 standard vertically in the
middle of the powder bed had the smallest deviations in mechanical characteristics. On the
other hand, the specimens printed based on ISO 604 standard had the biggest deviations.
These findings suggest that the printing orientation and location on the powder bed can affect
the mechanical properties of SLS-printed components
PB  - Serbian Ceramic Society
C3  - Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION XI
T1  - The influence of print orientation and print location on the mechanical characteristics of specimens obtained by SLS technology
EP  - 82
SP  - 82
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7012
ER  - 

@conference{
author = "Jevtić, Ivana and Mladenović, Goran and Milošević, Miloš and Milovanović, Aleksa and Trajković, Isaak",
year = "2023",
abstract = "SLS technology has become popular in various industries due to its ability to produce
complex components with less effort than traditional methods. The study used PA 12, a
commonly used material in SLS printing, to create three types of specimens that were tested
for their mechanical characteristics. The specimens were designed based on ISO standards
(i.e. ISO 178, ISO 527-2, ISO 604) and printed on the Fuse 1 (FormLabs, Summerville, MA)
3D printer in four batches. These batches differed according to the printing orientation (i.e.
horizontal and vertical) and the printing location (i.e. in the middle and on the edge of the
powder bed). The printed specimens were then tested on subjected to a standard tensile
testing machine (SHIMADZU AGS-X 100kN).
The study found that the specimens printed according to ISO 178 standard vertically in the
middle of the powder bed had the smallest deviations in mechanical characteristics. On the
other hand, the specimens printed based on ISO 604 standard had the biggest deviations.
These findings suggest that the printing orientation and location on the powder bed can affect
the mechanical properties of SLS-printed components",
publisher = "Serbian Ceramic Society",
journal = "Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION XI",
title = "The influence of print orientation and print location on the mechanical characteristics of specimens obtained by SLS technology",
pages = "82-82",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7012"
}

Jevtić, I., Mladenović, G., Milošević, M., Milovanović, A.,& Trajković, I.. (2023). The influence of print orientation and print location on the mechanical characteristics of specimens obtained by SLS technology. in Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION XI
Serbian Ceramic Society., 82-82.
https://hdl.handle.net/21.15107/rcub_machinery_7012

Jevtić I, Mladenović G, Milošević M, Milovanović A, Trajković I. The influence of print orientation and print location on the mechanical characteristics of specimens obtained by SLS technology. in Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION XI. 2023;:82-82.
https://hdl.handle.net/21.15107/rcub_machinery_7012 .

Jevtić, Ivana, Mladenović, Goran, Milošević, Miloš, Milovanović, Aleksa, Trajković, Isaak, "The influence of print orientation and print location on the mechanical characteristics of specimens obtained by SLS technology" in Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION XI (2023):82-82,
https://hdl.handle.net/21.15107/rcub_machinery_7012 .

TY  - JOUR
AU  - Jevtić, Ivana
AU  - Golubović, Zorana
AU  - Mladenović, Goran
AU  - Berto, Filippo
AU  - Sedmak, Aleksandar
AU  - Milovanović, Aleksa
AU  - Milošević, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7011
AB  - Selective laser sintering (SLS) is one of the additive manufacturing technologies dedicated to the production of high-quality parts with complex geometries. Here, polyamide 12 (PA12) is a commonly used material, for manufacturing parts with sufficient mechanical and thermal properties. In SLS, many manufacturing parameters have an effect on the mechanical properties of final parts. Even the decision regarding the orientation of a part in a powder bed may have a significant effect on the mechanical properties. In this research, the influence of horizontal (H) and vertical (V) printing orientations on the ultimate tensile strength (UTS) of fabricated PA12 specimens are examined. Our research findings show that H specimens exhibit larger deformations and smaller UTS value scatter in comparison with V specimens. Also, worth pointing out is the fact that V-oriented specimens have a higher elastic modulus. One can assume that the sintering process is more effective in V specimens, due to a more uniform laser beam trajectory than in the H specimens' case.
PB  - Springer
T2  - Journal of Mechanical and Technology
T1  - Printing orientation influence on tensile strength of PA12 specimens obtained by SLS
EP  - 6
IS  - 11
SP  - 1
VL  - 37
DO  - 10.1007/s12206-023-2306-4
ER  - 

@article{
author = "Jevtić, Ivana and Golubović, Zorana and Mladenović, Goran and Berto, Filippo and Sedmak, Aleksandar and Milovanović, Aleksa and Milošević, Miloš",
year = "2023",
abstract = "Selective laser sintering (SLS) is one of the additive manufacturing technologies dedicated to the production of high-quality parts with complex geometries. Here, polyamide 12 (PA12) is a commonly used material, for manufacturing parts with sufficient mechanical and thermal properties. In SLS, many manufacturing parameters have an effect on the mechanical properties of final parts. Even the decision regarding the orientation of a part in a powder bed may have a significant effect on the mechanical properties. In this research, the influence of horizontal (H) and vertical (V) printing orientations on the ultimate tensile strength (UTS) of fabricated PA12 specimens are examined. Our research findings show that H specimens exhibit larger deformations and smaller UTS value scatter in comparison with V specimens. Also, worth pointing out is the fact that V-oriented specimens have a higher elastic modulus. One can assume that the sintering process is more effective in V specimens, due to a more uniform laser beam trajectory than in the H specimens' case.",
publisher = "Springer",
journal = "Journal of Mechanical and Technology",
title = "Printing orientation influence on tensile strength of PA12 specimens obtained by SLS",
pages = "6-1",
number = "11",
volume = "37",
doi = "10.1007/s12206-023-2306-4"
}

Jevtić, I., Golubović, Z., Mladenović, G., Berto, F., Sedmak, A., Milovanović, A.,& Milošević, M.. (2023). Printing orientation influence on tensile strength of PA12 specimens obtained by SLS. in Journal of Mechanical and Technology
Springer., 37(11), 1-6.
https://doi.org/10.1007/s12206-023-2306-4

Jevtić I, Golubović Z, Mladenović G, Berto F, Sedmak A, Milovanović A, Milošević M. Printing orientation influence on tensile strength of PA12 specimens obtained by SLS. in Journal of Mechanical and Technology. 2023;37(11):1-6.
doi:10.1007/s12206-023-2306-4 .

Jevtić, Ivana, Golubović, Zorana, Mladenović, Goran, Berto, Filippo, Sedmak, Aleksandar, Milovanović, Aleksa, Milošević, Miloš, "Printing orientation influence on tensile strength of PA12 specimens obtained by SLS" in Journal of Mechanical and Technology, 37, no. 11 (2023):1-6,
https://doi.org/10.1007/s12206-023-2306-4 . .

TY  - CONF
AU  - Milovanović, Aleksa
AU  - Montanari, Matteo
AU  - Brighenti, Roberto
AU  - Sedmak, Aleksandar
AU  - Milošević, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7373
AB  - Vat photopolymerization is an Additive Manufacturing (AM) technology that enables the production of dimensionally accurate components. Due to its accuracy, this technology has led to the development of various sub-types, each with different methods of introducing UV light to the liquid resin in the vat. UV light can be introduced through a mirror system (SLA), a projector (DLP), or an LCD screen that acts as a photomask over a projector’s light, allowing for the curing of the entire layer in one pass (MSLA). The material of interest in this study is a standard translucent resin used in MSLA, with a UV light wavelength of 405 nm. Previous extensive mechanical characterization of this material has shown a high dependence on the final component properties on layer thickness and curing times.
The objective of this research is to analyse the time-dependent behaviour of these materials. Specifically, closed-loops compression tests have been conducted, subjecting the material to loading and unloading sequences at strain levels of 5 and 25 %. To clarify, a strain level of 5 % falls within the elastic region of the material, while a strain level of 25 % is considerably within the plastic region. Various testing speeds were applied, namely 1, 5, 10, 25, and 100 mm/min. The influence of testing speed on the materials’ energy absorption capacity is evident. The highest difference is observed between 10 and 25 mm/min, indicating that the material’s ability to store energy is significantly reduced after a testing speed of 10 mm/min.
C3  - International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor)
T1  - Time-dependent behaviour of photosensitive resins in mSLA technology
SP  - 80
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7373
ER  - 

@conference{
author = "Milovanović, Aleksa and Montanari, Matteo and Brighenti, Roberto and Sedmak, Aleksandar and Milošević, Miloš",
year = "2023",
abstract = "Vat photopolymerization is an Additive Manufacturing (AM) technology that enables the production of dimensionally accurate components. Due to its accuracy, this technology has led to the development of various sub-types, each with different methods of introducing UV light to the liquid resin in the vat. UV light can be introduced through a mirror system (SLA), a projector (DLP), or an LCD screen that acts as a photomask over a projector’s light, allowing for the curing of the entire layer in one pass (MSLA). The material of interest in this study is a standard translucent resin used in MSLA, with a UV light wavelength of 405 nm. Previous extensive mechanical characterization of this material has shown a high dependence on the final component properties on layer thickness and curing times.
The objective of this research is to analyse the time-dependent behaviour of these materials. Specifically, closed-loops compression tests have been conducted, subjecting the material to loading and unloading sequences at strain levels of 5 and 25 %. To clarify, a strain level of 5 % falls within the elastic region of the material, while a strain level of 25 % is considerably within the plastic region. Various testing speeds were applied, namely 1, 5, 10, 25, and 100 mm/min. The influence of testing speed on the materials’ energy absorption capacity is evident. The highest difference is observed between 10 and 25 mm/min, indicating that the material’s ability to store energy is significantly reduced after a testing speed of 10 mm/min.",
journal = "International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor)",
title = "Time-dependent behaviour of photosensitive resins in mSLA technology",
pages = "80",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7373"
}

Milovanović, A., Montanari, M., Brighenti, R., Sedmak, A.,& Milošević, M.. (2023). Time-dependent behaviour of photosensitive resins in mSLA technology. in International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor), 80.
https://hdl.handle.net/21.15107/rcub_machinery_7373

Milovanović A, Montanari M, Brighenti R, Sedmak A, Milošević M. Time-dependent behaviour of photosensitive resins in mSLA technology. in International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor). 2023;:80.
https://hdl.handle.net/21.15107/rcub_machinery_7373 .

Milovanović, Aleksa, Montanari, Matteo, Brighenti, Roberto, Sedmak, Aleksandar, Milošević, Miloš, "Time-dependent behaviour of photosensitive resins in mSLA technology" in International conference of experimental and numerical investigations and new technologies (2023 ; Zlatibor) (2023):80,
https://hdl.handle.net/21.15107/rcub_machinery_7373 .

TY  - CONF
AU  - Jevtić, Ivana
AU  - Mladenović, Goran
AU  - Milošević, Miloš
AU  - Milovanović, Aleksa
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7086
AB  - The purpose of this research is to investigate the mechanical properties of Additive Manufacturing(AM)parts. The 3D printer used in this study is Fuse 1 (FormLabs, Summerville, MA), which utilizes theSLS(Selective Laser Sintering) technology. This technology allows the production of objects with different shapesand dimensions simultaneously, provided that they are printed at a minimum distance of 5 [mm] apart. Thepowder layer thickness during printing was 110 microns. The mechanical characteristics of a specifictypeofspecimen, which conforms to the ISO 604 standard for compressive specimens, were examined. Thecompressive specimens have dimensions of Ø10x20 [mm]. Four batches of specimens were produced, eachdiffering in printing orientation (i.e. horizontal and vertical) and printing location (i.e. printed on the edgeandin the middle of the powder bed). The material used for printing the specimens is polyamide (PA12), whichhas a compressive strength is 13/24/55 MPa at 1%/2%/5%. The specimens were subjected to a standardtensiletesting machine (SHIMADZU AGS-X 100kN) after printing. Furthermore, the results of the testing also showed significant variations in the compressive strengthofthe specimens at different levels of elongation. At 1% and 2% elongation, the compressive strengthvaluesdisplayed large deviations, which suggests that the parts may not be able to withstand highlevelsofdeformation at these points. However, at 5% elongation, the values were much closer to the expectedvaluesfound in the literature
C3  - 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023)
T1  - Mechanical characteristics of compressive specimens obtained by SLS technology
EP  - 104
SP  - 104
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7086
ER  - 

@conference{
author = "Jevtić, Ivana and Mladenović, Goran and Milošević, Miloš and Milovanović, Aleksa",
year = "2023",
abstract = "The purpose of this research is to investigate the mechanical properties of Additive Manufacturing(AM)parts. The 3D printer used in this study is Fuse 1 (FormLabs, Summerville, MA), which utilizes theSLS(Selective Laser Sintering) technology. This technology allows the production of objects with different shapesand dimensions simultaneously, provided that they are printed at a minimum distance of 5 [mm] apart. Thepowder layer thickness during printing was 110 microns. The mechanical characteristics of a specifictypeofspecimen, which conforms to the ISO 604 standard for compressive specimens, were examined. Thecompressive specimens have dimensions of Ø10x20 [mm]. Four batches of specimens were produced, eachdiffering in printing orientation (i.e. horizontal and vertical) and printing location (i.e. printed on the edgeandin the middle of the powder bed). The material used for printing the specimens is polyamide (PA12), whichhas a compressive strength is 13/24/55 MPa at 1%/2%/5%. The specimens were subjected to a standardtensiletesting machine (SHIMADZU AGS-X 100kN) after printing. Furthermore, the results of the testing also showed significant variations in the compressive strengthofthe specimens at different levels of elongation. At 1% and 2% elongation, the compressive strengthvaluesdisplayed large deviations, which suggests that the parts may not be able to withstand highlevelsofdeformation at these points. However, at 5% elongation, the values were much closer to the expectedvaluesfound in the literature",
journal = "2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023)",
title = "Mechanical characteristics of compressive specimens obtained by SLS technology",
pages = "104-104",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7086"
}

Jevtić, I., Mladenović, G., Milošević, M.,& Milovanović, A.. (2023). Mechanical characteristics of compressive specimens obtained by SLS technology. in 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), 104-104.
https://hdl.handle.net/21.15107/rcub_machinery_7086

Jevtić I, Mladenović G, Milošević M, Milovanović A. Mechanical characteristics of compressive specimens obtained by SLS technology. in 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023). 2023;:104-104.
https://hdl.handle.net/21.15107/rcub_machinery_7086 .

Jevtić, Ivana, Mladenović, Goran, Milošević, Miloš, Milovanović, Aleksa, "Mechanical characteristics of compressive specimens obtained by SLS technology" in 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023) (2023):104-104,
https://hdl.handle.net/21.15107/rcub_machinery_7086 .

TY  - CONF
AU  - Jevtić, Ivana
AU  - Mladenović, Goran
AU  - Milošević, Miloš
AU  - Trajković, Isaak
AU  - Milovanović, Aleksa
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6899
AB  - SLS technology is a popular choice in various industries worldwide because of its ability to produce complex geometry components with less effort when compared to conventional methods. The technology involves using materials in powder forms, such as polyamides (PA), polystyrenes, thermoplastic elastomers, and polyaryletherketones. In this study, the research focuses on compressive PA12 specimens with CAD model dimensions selected according to the ISO 604 standard, with bulk dimensions of Ø10x20 [mm]. The study utilizes a Fuse 1 (FormLabs, Summerville, MA) 3D printer that employs the SLS technology. This printer is capable of producing objects with different shapes and dimensions simultaneously, provided that they are printed at a minimum distance of 5 [mm] apart. The research involves producing four batches of specimens, each differing in printing orientation (i.e., horizontal and vertical) and printing location (i.e., printed on the edge and in the middle of the powder bed). The printed specimens are scanned, and the obtained scans are compared with the original CAD model in the GOM Inspect program. The highest deviations in all four specimen series are in height, ranging from 0.1 up to 0.15 mm. In the case of vertical specimens printed in the middle of the powder bed, there are also deviations in the width of the specimen.
PB  - University of Belgrade – Faculty of Mechanical Engineering
C3  - 7th International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2023, The Book Of Abstracts, Zlatibor, July 04- July 07, 2023
T1  - Deviations Measurements of SLS PA Material at Compressive Specimens
EP  - 8
SP  - 8
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6899
ER  - 

@conference{
author = "Jevtić, Ivana and Mladenović, Goran and Milošević, Miloš and Trajković, Isaak and Milovanović, Aleksa",
year = "2023",
abstract = "SLS technology is a popular choice in various industries worldwide because of its ability to produce complex geometry components with less effort when compared to conventional methods. The technology involves using materials in powder forms, such as polyamides (PA), polystyrenes, thermoplastic elastomers, and polyaryletherketones. In this study, the research focuses on compressive PA12 specimens with CAD model dimensions selected according to the ISO 604 standard, with bulk dimensions of Ø10x20 [mm]. The study utilizes a Fuse 1 (FormLabs, Summerville, MA) 3D printer that employs the SLS technology. This printer is capable of producing objects with different shapes and dimensions simultaneously, provided that they are printed at a minimum distance of 5 [mm] apart. The research involves producing four batches of specimens, each differing in printing orientation (i.e., horizontal and vertical) and printing location (i.e., printed on the edge and in the middle of the powder bed). The printed specimens are scanned, and the obtained scans are compared with the original CAD model in the GOM Inspect program. The highest deviations in all four specimen series are in height, ranging from 0.1 up to 0.15 mm. In the case of vertical specimens printed in the middle of the powder bed, there are also deviations in the width of the specimen.",
publisher = "University of Belgrade – Faculty of Mechanical Engineering",
journal = "7th International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2023, The Book Of Abstracts, Zlatibor, July 04- July 07, 2023",
title = "Deviations Measurements of SLS PA Material at Compressive Specimens",
pages = "8-8",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6899"
}

Jevtić, I., Mladenović, G., Milošević, M., Trajković, I.,& Milovanović, A.. (2023). Deviations Measurements of SLS PA Material at Compressive Specimens. in 7th International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2023, The Book Of Abstracts, Zlatibor, July 04- July 07, 2023
University of Belgrade – Faculty of Mechanical Engineering., 8-8.
https://hdl.handle.net/21.15107/rcub_machinery_6899

Jevtić I, Mladenović G, Milošević M, Trajković I, Milovanović A. Deviations Measurements of SLS PA Material at Compressive Specimens. in 7th International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2023, The Book Of Abstracts, Zlatibor, July 04- July 07, 2023. 2023;:8-8.
https://hdl.handle.net/21.15107/rcub_machinery_6899 .

Jevtić, Ivana, Mladenović, Goran, Milošević, Miloš, Trajković, Isaak, Milovanović, Aleksa, "Deviations Measurements of SLS PA Material at Compressive Specimens" in 7th International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2023, The Book Of Abstracts, Zlatibor, July 04- July 07, 2023 (2023):8-8,
https://hdl.handle.net/21.15107/rcub_machinery_6899 .

TY  - JOUR
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
AU  - Milovanović, Aleksa
AU  - Mladenović, Goran
AU  - Milošević, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5903
AB  - High demand for part customization shifts industries toward AM technologies. Part customization in high-volume manufacturing is developed to its limits, whereas low-volume production using AM is still economically unjustified. FDM technology is quite common in low-volume AM production, but the main issue is poor printing parameter optimization which may result in insufficient final part quality. The subject of this paper is the experimental determination of the optimal parameters for the PLA polymer FDM parts, focusing on nozzle temperature and printing speed. Part geometry and mechanical properties are evaluated for the temperature range of 170–210 °C and speeds of 40, 80, and 120 mm/min. Roughness measurements for part geometrical accuracy assessment and tensile tests for mechanical property estimation have shown the clear advantage of 190 °C and 40 mm/min over the other parameter combinations. However, for higher FDM process productivity 80 mm/min speed may also be considered with 190 °C.
PB  - Springer Nature Switzerland
PB  - Seoul, The Korean Society of Mechanical Engineers
T2  - Journal of Mechanical Science and Technology
T1  - Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity
EP  - 706
IS  - 2
SP  - 697
VL  - 37
DO  - 10.1007/s12206-023-0113-6
ER  - 

@article{
author = "Popović, Mihajlo and Pjević, Miloš and Milovanović, Aleksa and Mladenović, Goran and Milošević, Miloš",
year = "2023",
abstract = "High demand for part customization shifts industries toward AM technologies. Part customization in high-volume manufacturing is developed to its limits, whereas low-volume production using AM is still economically unjustified. FDM technology is quite common in low-volume AM production, but the main issue is poor printing parameter optimization which may result in insufficient final part quality. The subject of this paper is the experimental determination of the optimal parameters for the PLA polymer FDM parts, focusing on nozzle temperature and printing speed. Part geometry and mechanical properties are evaluated for the temperature range of 170–210 °C and speeds of 40, 80, and 120 mm/min. Roughness measurements for part geometrical accuracy assessment and tensile tests for mechanical property estimation have shown the clear advantage of 190 °C and 40 mm/min over the other parameter combinations. However, for higher FDM process productivity 80 mm/min speed may also be considered with 190 °C.",
publisher = "Springer Nature Switzerland, Seoul, The Korean Society of Mechanical Engineers",
journal = "Journal of Mechanical Science and Technology",
title = "Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity",
pages = "706-697",
number = "2",
volume = "37",
doi = "10.1007/s12206-023-0113-6"
}

Popović, M., Pjević, M., Milovanović, A., Mladenović, G.,& Milošević, M.. (2023). Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity. in Journal of Mechanical Science and Technology
Springer Nature Switzerland., 37(2), 697-706.
https://doi.org/10.1007/s12206-023-0113-6

Popović M, Pjević M, Milovanović A, Mladenović G, Milošević M. Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity. in Journal of Mechanical Science and Technology. 2023;37(2):697-706.
doi:10.1007/s12206-023-0113-6 .

Popović, Mihajlo, Pjević, Miloš, Milovanović, Aleksa, Mladenović, Goran, Milošević, Miloš, "Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity" in Journal of Mechanical Science and Technology, 37, no. 2 (2023):697-706,
https://doi.org/10.1007/s12206-023-0113-6 . .

TY  - CONF
AU  - Milovanović, Aleksa
AU  - Poduška, Jan
AU  - Travníček, Lukáš
AU  - Sedmak, Aleksandar
AU  - Milošević, Miloš
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7369
AB  - Additive Manufacturing (AM) provides many applications in different high-demand engineering fields, i.e., automotive, aeronautical and biomedical fields. For biomedical applications, biodegradable thermoplastics, such as PLA (PolyLactic Acid), are suited for the fabrication of orthopaedic plates. FDM (Fused Deposition Modeling) AM technology provides the creation of structures with different infill percentages, thus enabling drug delivery application. As PLA material degrades, drugs incorporated within the structures are being released into the system- enabling tissue healing. The subject of this paper is the structural integrity assessment of one orthopaedic plate design via numerical analysis. Degradation of material is not the concern of this paper, just the time period when the PLA material holds its primary mechanical values. Fracture mechanics fatigue experiments on Compact Tenson (CT) specimens gives valuable data concerning Paris law constants: C and m. There are three different pairs of these constants, relative to printing layer height: 0.3, 0.2 and 0.1 mm. Fatigue tests have shown that the least result scatter is present in 0.1 mm layer height, thence this set is used primarily for numerical simulation in Ansys software. Pre-crack is applied to the simulation with a 0.5 mm crack depth. Boundary conditions and loading are used as suggested in the previous research. The final result of this research is crack propagation diagrams, relative to a number of cycles- thus showing how long a chosen PLA structure can endure in such an application.
C3  - International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor)
T1  - Numerical analysis of PLA material orthopaedic plates
SP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7369
ER  - 

@conference{
author = "Milovanović, Aleksa and Poduška, Jan and Travníček, Lukáš and Sedmak, Aleksandar and Milošević, Miloš",
year = "2022",
abstract = "Additive Manufacturing (AM) provides many applications in different high-demand engineering fields, i.e., automotive, aeronautical and biomedical fields. For biomedical applications, biodegradable thermoplastics, such as PLA (PolyLactic Acid), are suited for the fabrication of orthopaedic plates. FDM (Fused Deposition Modeling) AM technology provides the creation of structures with different infill percentages, thus enabling drug delivery application. As PLA material degrades, drugs incorporated within the structures are being released into the system- enabling tissue healing. The subject of this paper is the structural integrity assessment of one orthopaedic plate design via numerical analysis. Degradation of material is not the concern of this paper, just the time period when the PLA material holds its primary mechanical values. Fracture mechanics fatigue experiments on Compact Tenson (CT) specimens gives valuable data concerning Paris law constants: C and m. There are three different pairs of these constants, relative to printing layer height: 0.3, 0.2 and 0.1 mm. Fatigue tests have shown that the least result scatter is present in 0.1 mm layer height, thence this set is used primarily for numerical simulation in Ansys software. Pre-crack is applied to the simulation with a 0.5 mm crack depth. Boundary conditions and loading are used as suggested in the previous research. The final result of this research is crack propagation diagrams, relative to a number of cycles- thus showing how long a chosen PLA structure can endure in such an application.",
journal = "International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor)",
title = "Numerical analysis of PLA material orthopaedic plates",
pages = "48",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7369"
}

Milovanović, A., Poduška, J., Travníček, L., Sedmak, A.,& Milošević, M.. (2022). Numerical analysis of PLA material orthopaedic plates. in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor), 48.
https://hdl.handle.net/21.15107/rcub_machinery_7369

Milovanović A, Poduška J, Travníček L, Sedmak A, Milošević M. Numerical analysis of PLA material orthopaedic plates. in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor). 2022;:48.
https://hdl.handle.net/21.15107/rcub_machinery_7369 .

Milovanović, Aleksa, Poduška, Jan, Travníček, Lukáš, Sedmak, Aleksandar, Milošević, Miloš, "Numerical analysis of PLA material orthopaedic plates" in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor) (2022):48,
https://hdl.handle.net/21.15107/rcub_machinery_7369 .

TY  - CONF
AU  - Golubović, Zorana
AU  - Milovanović, Aleksa
AU  - Mitrović, Aleksandra
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7370
AB  - 3D printing as digital fabrication technology became widely popular and used due to its ease in production and customization of any type of design in various fields of industry, medicine, or research. Different printing processes are based on making an object by deposition of material layer by layer, from previously created CAD model. Quality of 3D printed parts is dependent on many parameters such as chemical composition of used materials, printing parameters (infill percentage, infill pattern, building orientation, raster angle,..), thermal behaviour during and after printing processes, aging effect, mechanical properties (static and dynamic analysis), accuracy of printed parts, morphology and topology. With regard to the area of characteristics, which should be examined, different standards, procedures and equipment are employed. In this context, it is challenging task to link various parameters to obtain the best part performances. Given the large number of different possibilities in testing of final 3D printed product, understanding the influential parameters of structure of the material and final part is essential. This paper presents an overview of characterization methods that can be used in order to observe morphology and topology of printed parts.
C3  - International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor)
T1  - Characterization of 3D printed parts
SP  - 56
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7370
ER  - 

@conference{
author = "Golubović, Zorana and Milovanović, Aleksa and Mitrović, Aleksandra",
year = "2022",
abstract = "3D printing as digital fabrication technology became widely popular and used due to its ease in production and customization of any type of design in various fields of industry, medicine, or research. Different printing processes are based on making an object by deposition of material layer by layer, from previously created CAD model. Quality of 3D printed parts is dependent on many parameters such as chemical composition of used materials, printing parameters (infill percentage, infill pattern, building orientation, raster angle,..), thermal behaviour during and after printing processes, aging effect, mechanical properties (static and dynamic analysis), accuracy of printed parts, morphology and topology. With regard to the area of characteristics, which should be examined, different standards, procedures and equipment are employed. In this context, it is challenging task to link various parameters to obtain the best part performances. Given the large number of different possibilities in testing of final 3D printed product, understanding the influential parameters of structure of the material and final part is essential. This paper presents an overview of characterization methods that can be used in order to observe morphology and topology of printed parts.",
journal = "International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor)",
title = "Characterization of 3D printed parts",
pages = "56",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7370"
}

Golubović, Z., Milovanović, A.,& Mitrović, A.. (2022). Characterization of 3D printed parts. in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor), 56.
https://hdl.handle.net/21.15107/rcub_machinery_7370

Golubović Z, Milovanović A, Mitrović A. Characterization of 3D printed parts. in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor). 2022;:56.
https://hdl.handle.net/21.15107/rcub_machinery_7370 .

Golubović, Zorana, Milovanović, Aleksa, Mitrović, Aleksandra, "Characterization of 3D printed parts" in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor) (2022):56,
https://hdl.handle.net/21.15107/rcub_machinery_7370 .

TY  - CONF
AU  - Babinský, Tomáš
AU  - Šulák, Ivo
AU  - Chlupová, Alice
AU  - Milovanović, Aleksa
AU  - Náhlík, Luboš
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7371
AB  - This study aims to provide a comparison in fatigue behaviour between cast and additively manufactured (AM) IN939 superalloy. The AM technique in question was direct metal laser deposition. The material was tested in three thermodynamical states: (i) cast aged, (ii) as-printed and (iii) printed aged. In order to assess the influence of building direction, the specimens were printed in vertical and horizontal building directions (BD). The cylindrical specimens were tested uniaxially (parallel to vertical BD) with symmetrical push-pull cycles. The tests were conducted in strain control with a constant strain rate of 2∙10-3 s-1 at room temperature and were conducted in a low-cycle fatigue regime to evaluate the differences in cyclic plastic behaviour of the tested material states. The specimen observations prior to and after the testing were performed using scanning and transmission electron microscopy. Generally, the printed specimens exhibited significantly longer lifetimes due to the presence of casting defects in the cast material. Microscopical observations revealed that AM introduces dislocation cells which remain stable throughout the fatigue testing whereas the primary damaging mechanism in the conventional cast superalloy was the localisation of dislocations into persistent slip bands. Compared to horizontal BD at a given strain amplitude, vertical BD led to longer lifetimes, although at considerably lower stresses. The γ’ precipitates, introduced to the microstructure by ageing treatment, increased the strength of the material at the cost of lower plasticity. However, in order to clarify all the aspects of fatigue damage in AM superalloys, more work needs to be conducted.
PB  - Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia
C3  - International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor)
T1  - Room-temperature fatigue behaviour of additively-manufactured IN939 superalloy
SP  - 85
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7371
ER  - 

@conference{
author = "Babinský, Tomáš and Šulák, Ivo and Chlupová, Alice and Milovanović, Aleksa and Náhlík, Luboš",
year = "2022",
abstract = "This study aims to provide a comparison in fatigue behaviour between cast and additively manufactured (AM) IN939 superalloy. The AM technique in question was direct metal laser deposition. The material was tested in three thermodynamical states: (i) cast aged, (ii) as-printed and (iii) printed aged. In order to assess the influence of building direction, the specimens were printed in vertical and horizontal building directions (BD). The cylindrical specimens were tested uniaxially (parallel to vertical BD) with symmetrical push-pull cycles. The tests were conducted in strain control with a constant strain rate of 2∙10-3 s-1 at room temperature and were conducted in a low-cycle fatigue regime to evaluate the differences in cyclic plastic behaviour of the tested material states. The specimen observations prior to and after the testing were performed using scanning and transmission electron microscopy. Generally, the printed specimens exhibited significantly longer lifetimes due to the presence of casting defects in the cast material. Microscopical observations revealed that AM introduces dislocation cells which remain stable throughout the fatigue testing whereas the primary damaging mechanism in the conventional cast superalloy was the localisation of dislocations into persistent slip bands. Compared to horizontal BD at a given strain amplitude, vertical BD led to longer lifetimes, although at considerably lower stresses. The γ’ precipitates, introduced to the microstructure by ageing treatment, increased the strength of the material at the cost of lower plasticity. However, in order to clarify all the aspects of fatigue damage in AM superalloys, more work needs to be conducted.",
publisher = "Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia",
journal = "International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor)",
title = "Room-temperature fatigue behaviour of additively-manufactured IN939 superalloy",
pages = "85",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7371"
}

Babinský, T., Šulák, I., Chlupová, A., Milovanović, A.,& Náhlík, L.. (2022). Room-temperature fatigue behaviour of additively-manufactured IN939 superalloy. in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor)
Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia., 85.
https://hdl.handle.net/21.15107/rcub_machinery_7371

Babinský T, Šulák I, Chlupová A, Milovanović A, Náhlík L. Room-temperature fatigue behaviour of additively-manufactured IN939 superalloy. in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor). 2022;:85.
https://hdl.handle.net/21.15107/rcub_machinery_7371 .

Babinský, Tomáš, Šulák, Ivo, Chlupová, Alice, Milovanović, Aleksa, Náhlík, Luboš, "Room-temperature fatigue behaviour of additively-manufactured IN939 superalloy" in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor) (2022):85,
https://hdl.handle.net/21.15107/rcub_machinery_7371 .

TY  - JOUR
AU  - Smoljanić, Tamara
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Burzić, Zijah
AU  - Milovanović, Aleksa
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7200
AB  - The paper involves experimental testing of titanium alloy Ti-6Al-4V specimens, based on which numerical models are made to provide the basis for further investigation. Due to the exploitation conditions these implants are subjected to, experimental tensile tests are performed on three types of specimens: regular type, and specimens previously subjected to the effects of humid and salty environment. The goal is to determine how these extreme conditions affect mechanical properties of Ti-6Al-4V alloy, along with the development of numerical models which could accurately simulate the behaviour of real specimens.
PB  - Society for Structural Integrity and Life
PB  - IMS Institute
T2  - STRUCTURAL INTEGRITY AND LIFE
T1  - Experimental and numerical investigation of Ti-6Al-4V alloy behaviour under different exploitation conditions
EP  - 357
IS  - 3
SP  - 353
VL  - 22
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7200
ER  - 

@article{
author = "Smoljanić, Tamara and Sedmak, Simon and Sedmak, Aleksandar and Burzić, Zijah and Milovanović, Aleksa",
year = "2022",
abstract = "The paper involves experimental testing of titanium alloy Ti-6Al-4V specimens, based on which numerical models are made to provide the basis for further investigation. Due to the exploitation conditions these implants are subjected to, experimental tensile tests are performed on three types of specimens: regular type, and specimens previously subjected to the effects of humid and salty environment. The goal is to determine how these extreme conditions affect mechanical properties of Ti-6Al-4V alloy, along with the development of numerical models which could accurately simulate the behaviour of real specimens.",
publisher = "Society for Structural Integrity and Life, IMS Institute",
journal = "STRUCTURAL INTEGRITY AND LIFE",
title = "Experimental and numerical investigation of Ti-6Al-4V alloy behaviour under different exploitation conditions",
pages = "357-353",
number = "3",
volume = "22",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7200"
}

Smoljanić, T., Sedmak, S., Sedmak, A., Burzić, Z.,& Milovanović, A.. (2022). Experimental and numerical investigation of Ti-6Al-4V alloy behaviour under different exploitation conditions. in STRUCTURAL INTEGRITY AND LIFE
Society for Structural Integrity and Life., 22(3), 353-357.
https://hdl.handle.net/21.15107/rcub_machinery_7200

Smoljanić T, Sedmak S, Sedmak A, Burzić Z, Milovanović A. Experimental and numerical investigation of Ti-6Al-4V alloy behaviour under different exploitation conditions. in STRUCTURAL INTEGRITY AND LIFE. 2022;22(3):353-357.
https://hdl.handle.net/21.15107/rcub_machinery_7200 .

Smoljanić, Tamara, Sedmak, Simon, Sedmak, Aleksandar, Burzić, Zijah, Milovanović, Aleksa, "Experimental and numerical investigation of Ti-6Al-4V alloy behaviour under different exploitation conditions" in STRUCTURAL INTEGRITY AND LIFE, 22, no. 3 (2022):353-357,
https://hdl.handle.net/21.15107/rcub_machinery_7200 .

TY  - JOUR
AU  - Milošević, Miloš
AU  - Trajković, Isaak
AU  - Golubović, Zorana
AU  - Ivanov, Toni
AU  - Mladenović, Goran
AU  - Milovanović, Aleksa
AU  - Mitrović, Nenad
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5424
AB  - Martial arts and fight sports are mostly based on exchanging the punches and kicks that often result with injuries of face, skull bones, and neck vertebrae. One of possibilities to reduce number of injuries in athletes who deal with martial arts is development of new materials and improvement of designs for helmets used in sport fights. In order to experimentally analyze impact forces and simulate conditions during different fight punches mechanical installment was made. Aramis system is used to measure the displacement fields and the distribution of deformations which occur on the neck over the entire analyzed area based on the correlation of digital images. On this manner better understanding of behavior of both materials and structures during the action of the impact forces and loading is obtained. This information can further be used in researches related to the development of helmets used in martial arts which would influence reduction of values of neck deformations in athletes.
PB  - SAGE
T2  - Advances in Mechanical Engineering
T1  - Development of methodologies for experimental analysis of neck deformations caused by impact forces in martial arts
EP  - 14
EP  - M23
IS  - 8
SP  - 1
VL  - 14
DO  - 10.1177/16878132221121515
ER  - 

@article{
author = "Milošević, Miloš and Trajković, Isaak and Golubović, Zorana and Ivanov, Toni and Mladenović, Goran and Milovanović, Aleksa and Mitrović, Nenad",
year = "2022",
abstract = "Martial arts and fight sports are mostly based on exchanging the punches and kicks that often result with injuries of face, skull bones, and neck vertebrae. One of possibilities to reduce number of injuries in athletes who deal with martial arts is development of new materials and improvement of designs for helmets used in sport fights. In order to experimentally analyze impact forces and simulate conditions during different fight punches mechanical installment was made. Aramis system is used to measure the displacement fields and the distribution of deformations which occur on the neck over the entire analyzed area based on the correlation of digital images. On this manner better understanding of behavior of both materials and structures during the action of the impact forces and loading is obtained. This information can further be used in researches related to the development of helmets used in martial arts which would influence reduction of values of neck deformations in athletes.",
publisher = "SAGE",
journal = "Advances in Mechanical Engineering",
title = "Development of methodologies for experimental analysis of neck deformations caused by impact forces in martial arts",
pages = "14-M23-1",
number = "8",
volume = "14",
doi = "10.1177/16878132221121515"
}

Milošević, M., Trajković, I., Golubović, Z., Ivanov, T., Mladenović, G., Milovanović, A.,& Mitrović, N.. (2022). Development of methodologies for experimental analysis of neck deformations caused by impact forces in martial arts. in Advances in Mechanical Engineering
SAGE., 14(8), 1-14.
https://doi.org/10.1177/16878132221121515

Milošević M, Trajković I, Golubović Z, Ivanov T, Mladenović G, Milovanović A, Mitrović N. Development of methodologies for experimental analysis of neck deformations caused by impact forces in martial arts. in Advances in Mechanical Engineering. 2022;14(8):1-14.
doi:10.1177/16878132221121515 .

Milošević, Miloš, Trajković, Isaak, Golubović, Zorana, Ivanov, Toni, Mladenović, Goran, Milovanović, Aleksa, Mitrović, Nenad, "Development of methodologies for experimental analysis of neck deformations caused by impact forces in martial arts" in Advances in Mechanical Engineering, 14, no. 8 (2022):1-14,
https://doi.org/10.1177/16878132221121515 . .