Popović, Mihajlo

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  • Popović, Mihajlo (17)
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Author's Bibliography

Investigation of the tensile strength of polymer materials obtained through 3D printing technologies

Vasiljević, Marija; Pejčić, Danilo; Lekić, Luka; Popović, Mihajlo; Pjević, Miloš; Milovanović, Aleksa

(Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia, 2023)

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 .

Printing parameter optimization of PLA material concerning geometrical accuracy and tensile properties relative to FDM process productivity

Popović, Mihajlo; Pjević, Miloš; Milovanović, Aleksa; Mladenović, Goran; Milošević, Miloš

(Springer Nature, 2023)

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 . .
7

Aplication of rough machining with ball end mill cutter in 3 axis free form surface manufacturing

Mladenović, Goran; Stojanović, Jagoš; Puzović, Radovan; Popović, Mihajlo; Pjević, Miloš

(University of Belgrade – Faculty of Mechanical Engineering, 2023)

TY  - CONF
AU  - Mladenović, Goran
AU  - Stojanović, Jagoš
AU  - Puzović, Radovan
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6903
AB  - The ball end cutter is a commonly used tool for rough machining free-form surfaces. This paper presents a procedure for rough machining parts with free-form surfaces on 3-axis machines. To achieve this, a model for predicting cutting forces is developed and implemented in a software solution for automatic technology design. This software solution has been previously tested and described. The procedure enables the optimal utilization of the tool while considering the maximum allowed cutting force for the selected tool diameter. The tool diameter is automatically determined based on the analysis of the surface geometry and is chosen to be smaller or equal to the minimum surface radius. The software solution includes an input of the part CAD model in STL file format and a tool database specific to the machine used. After upgrading the software with new strategies for rough machining, the generated NC code was tested on a CNC machine, and manufacturing was performed within the specified tolerances and surface roughness. The research was conducted at the Department of Production Engineering at the Faculty of Mechanical Engineering in Belgrade, where this topic has been actively studied for many years and is still under development. The described software solution is beneficial as it allows users to operate with minimal knowledge of CAM systems.
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
T1  - Aplication of rough machining with ball end mill cutter in 3 axis free form surface manufacturing
EP  - 61
SP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6903
ER  - 
@conference{
author = "Mladenović, Goran and Stojanović, Jagoš and Puzović, Radovan and Popović, Mihajlo and Pjević, Miloš",
year = "2023",
abstract = "The ball end cutter is a commonly used tool for rough machining free-form surfaces. This paper presents a procedure for rough machining parts with free-form surfaces on 3-axis machines. To achieve this, a model for predicting cutting forces is developed and implemented in a software solution for automatic technology design. This software solution has been previously tested and described. The procedure enables the optimal utilization of the tool while considering the maximum allowed cutting force for the selected tool diameter. The tool diameter is automatically determined based on the analysis of the surface geometry and is chosen to be smaller or equal to the minimum surface radius. The software solution includes an input of the part CAD model in STL file format and a tool database specific to the machine used. After upgrading the software with new strategies for rough machining, the generated NC code was tested on a CNC machine, and manufacturing was performed within the specified tolerances and surface roughness. The research was conducted at the Department of Production Engineering at the Faculty of Mechanical Engineering in Belgrade, where this topic has been actively studied for many years and is still under development. The described software solution is beneficial as it allows users to operate with minimal knowledge of CAM systems.",
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",
title = "Aplication of rough machining with ball end mill cutter in 3 axis free form surface manufacturing",
pages = "61-61",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6903"
}
Mladenović, G., Stojanović, J., Puzović, R., Popović, M.,& Pjević, M.. (2023). Aplication of rough machining with ball end mill cutter in 3 axis free form surface manufacturing. in 7th International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2023, The Book Of Abstracts, Zlatibor, July 04- July 07
University of Belgrade – Faculty of Mechanical Engineering., 61-61.
https://hdl.handle.net/21.15107/rcub_machinery_6903
Mladenović G, Stojanović J, Puzović R, Popović M, Pjević M. Aplication of rough machining with ball end mill cutter in 3 axis free form surface manufacturing. 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;:61-61.
https://hdl.handle.net/21.15107/rcub_machinery_6903 .
Mladenović, Goran, Stojanović, Jagoš, Puzović, Radovan, Popović, Mihajlo, Pjević, Miloš, "Aplication of rough machining with ball end mill cutter in 3 axis free form surface manufacturing" 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):61-61,
https://hdl.handle.net/21.15107/rcub_machinery_6903 .

SIMULATION, ANALYSIS AND OPTIMIZATION OF FORGING PROCESS FOR AXISYMMETRIC PART

Popović, Mihajlo; Furtula, Marko; Pjević, Miloš; Mladenović, Goran

(UNIVERSITY OF NOVI SAD, FACULTY OF TECHNICAL SCIENCES DEPARTMENT OF PRODUCTION ENGINEERING DEPARTMENT OF INDUSTRIAL ENGINEERING AND ENGINEERING MANAGEMENT, 2023)

TY  - CONF
AU  - Popović, Mihajlo
AU  - Furtula, Marko
AU  - Pjević, Miloš
AU  - Mladenović, Goran
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7255
AB  - Forging, as a type of technological process based on metal forming, is widely used in the modern
manufacturing industry. This paper is focused on the utilization of CAE software tools for simulating the forging process of an aluminium piston. The starting point for designing the technological process was a technical drawing of the machined piston. After determining forging tolerances, parting lines, forging angles, radii, and flash land, the forging part and forging dies were designed. The forging process in this particular case encompasses three metal-forming operations: upsetting, final forging, and trimming of the flash. The proposed technological solution was verified using the CAE software tool - QForm through various simulations of material behaviour during the forging process. The analysis included material flow, potential defects, as well as temperature and stress within the workpiece. After making a few adjustments to the forging design and parameters, the optimal solution was presented. Temperature and stress distributions in the best-case scenario were within an acceptable range, while the risk of surface defects and material flow abnormalities was very low. This paper demonstrates that the use of software tools for numerical simulations during the design of the forging technological process provides significant benefits, such as reducing production costs, improving product quality, minimizing scrap, saving time in product development, and reducing the number of required test samples.
PB  - UNIVERSITY OF NOVI SAD, FACULTY OF TECHNICAL SCIENCES DEPARTMENT OF PRODUCTION ENGINEERING DEPARTMENT OF INDUSTRIAL ENGINEERING AND ENGINEERING MANAGEMENT
C3  - Proceedings - 39th International Conference on production Engineering of Serbia – ICPES 2023
T1  - SIMULATION, ANALYSIS AND OPTIMIZATION OF FORGING PROCESS FOR AXISYMMETRIC PART
EP  - 258
SP  - 252
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7255
ER  - 
@conference{
author = "Popović, Mihajlo and Furtula, Marko and Pjević, Miloš and Mladenović, Goran",
year = "2023",
abstract = "Forging, as a type of technological process based on metal forming, is widely used in the modern
manufacturing industry. This paper is focused on the utilization of CAE software tools for simulating the forging process of an aluminium piston. The starting point for designing the technological process was a technical drawing of the machined piston. After determining forging tolerances, parting lines, forging angles, radii, and flash land, the forging part and forging dies were designed. The forging process in this particular case encompasses three metal-forming operations: upsetting, final forging, and trimming of the flash. The proposed technological solution was verified using the CAE software tool - QForm through various simulations of material behaviour during the forging process. The analysis included material flow, potential defects, as well as temperature and stress within the workpiece. After making a few adjustments to the forging design and parameters, the optimal solution was presented. Temperature and stress distributions in the best-case scenario were within an acceptable range, while the risk of surface defects and material flow abnormalities was very low. This paper demonstrates that the use of software tools for numerical simulations during the design of the forging technological process provides significant benefits, such as reducing production costs, improving product quality, minimizing scrap, saving time in product development, and reducing the number of required test samples.",
publisher = "UNIVERSITY OF NOVI SAD, FACULTY OF TECHNICAL SCIENCES DEPARTMENT OF PRODUCTION ENGINEERING DEPARTMENT OF INDUSTRIAL ENGINEERING AND ENGINEERING MANAGEMENT",
journal = "Proceedings - 39th International Conference on production Engineering of Serbia – ICPES 2023",
title = "SIMULATION, ANALYSIS AND OPTIMIZATION OF FORGING PROCESS FOR AXISYMMETRIC PART",
pages = "258-252",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7255"
}
Popović, M., Furtula, M., Pjević, M.,& Mladenović, G.. (2023). SIMULATION, ANALYSIS AND OPTIMIZATION OF FORGING PROCESS FOR AXISYMMETRIC PART. in Proceedings - 39th International Conference on production Engineering of Serbia – ICPES 2023
UNIVERSITY OF NOVI SAD, FACULTY OF TECHNICAL SCIENCES DEPARTMENT OF PRODUCTION ENGINEERING DEPARTMENT OF INDUSTRIAL ENGINEERING AND ENGINEERING MANAGEMENT., 252-258.
https://hdl.handle.net/21.15107/rcub_machinery_7255
Popović M, Furtula M, Pjević M, Mladenović G. SIMULATION, ANALYSIS AND OPTIMIZATION OF FORGING PROCESS FOR AXISYMMETRIC PART. in Proceedings - 39th International Conference on production Engineering of Serbia – ICPES 2023. 2023;:252-258.
https://hdl.handle.net/21.15107/rcub_machinery_7255 .
Popović, Mihajlo, Furtula, Marko, Pjević, Miloš, Mladenović, Goran, "SIMULATION, ANALYSIS AND OPTIMIZATION OF FORGING PROCESS FOR AXISYMMETRIC PART" in Proceedings - 39th International Conference on production Engineering of Serbia – ICPES 2023 (2023):252-258,
https://hdl.handle.net/21.15107/rcub_machinery_7255 .

An approach for automatic free form surface milling machining technology design

Mladenović, Goran; Puzović, Radovan; Stojanović, Jagoš; Jevtić, Ivana; Popović, Mihajlo; Pjević, Miloš

(UNIVERSITY OF NOVI SAD, FACULTY OF TECHNICAL SCIENCES, 2023)

TY  - CONF
AU  - Mladenović, Goran
AU  - Puzović, Radovan
AU  - Stojanović, Jagoš
AU  - Jevtić, Ivana
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7113
AB  - Parts with free form surfaces are commonly used in wide area of engineering, not only in mechanical
engineering. When it comes to the area of mechanical engineering, the main problem is how to produce such
parts. One of the commonly used methods is milling with ball end mill cutter on 3, 4 or 5 axis mill machines.
A usual approach for production of such parts is to generate NC code in some of commercial CAM software
and afterwards load it on CNC machine. In this paper is presented the software for automatic technology
design which is developed at the department of production engineering of the Faculty of Mechanical
engineering in Belgrade, Serbia. Based on loaded CAD models of the final product and workpiece which will
be used for production software automatically gives the NC code for machining according to implemented
machining strategies. The core of software is a module for machining simulation process which allow
multicriteria optimization method for machining. Verification of the generated NC code was done on
horizontal machining center and after that measurement of machined part where was verified quality of
machined part in predefined tolerances
PB  - UNIVERSITY OF NOVI SAD, FACULTY OF TECHNICAL SCIENCES
C3  - 39th INTERNATIONAL CONFERENCE ON PRODUCTION ENGINEERING OF SERBIA - ICPES 2023
T1  - An approach for automatic free form surface milling machining technology design
EP  - 230
SP  - 227
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7113
ER  - 
@conference{
author = "Mladenović, Goran and Puzović, Radovan and Stojanović, Jagoš and Jevtić, Ivana and Popović, Mihajlo and Pjević, Miloš",
year = "2023",
abstract = "Parts with free form surfaces are commonly used in wide area of engineering, not only in mechanical
engineering. When it comes to the area of mechanical engineering, the main problem is how to produce such
parts. One of the commonly used methods is milling with ball end mill cutter on 3, 4 or 5 axis mill machines.
A usual approach for production of such parts is to generate NC code in some of commercial CAM software
and afterwards load it on CNC machine. In this paper is presented the software for automatic technology
design which is developed at the department of production engineering of the Faculty of Mechanical
engineering in Belgrade, Serbia. Based on loaded CAD models of the final product and workpiece which will
be used for production software automatically gives the NC code for machining according to implemented
machining strategies. The core of software is a module for machining simulation process which allow
multicriteria optimization method for machining. Verification of the generated NC code was done on
horizontal machining center and after that measurement of machined part where was verified quality of
machined part in predefined tolerances",
publisher = "UNIVERSITY OF NOVI SAD, FACULTY OF TECHNICAL SCIENCES",
journal = "39th INTERNATIONAL CONFERENCE ON PRODUCTION ENGINEERING OF SERBIA - ICPES 2023",
title = "An approach for automatic free form surface milling machining technology design",
pages = "230-227",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7113"
}
Mladenović, G., Puzović, R., Stojanović, J., Jevtić, I., Popović, M.,& Pjević, M.. (2023). An approach for automatic free form surface milling machining technology design. in 39th INTERNATIONAL CONFERENCE ON PRODUCTION ENGINEERING OF SERBIA - ICPES 2023
UNIVERSITY OF NOVI SAD, FACULTY OF TECHNICAL SCIENCES., 227-230.
https://hdl.handle.net/21.15107/rcub_machinery_7113
Mladenović G, Puzović R, Stojanović J, Jevtić I, Popović M, Pjević M. An approach for automatic free form surface milling machining technology design. in 39th INTERNATIONAL CONFERENCE ON PRODUCTION ENGINEERING OF SERBIA - ICPES 2023. 2023;:227-230.
https://hdl.handle.net/21.15107/rcub_machinery_7113 .
Mladenović, Goran, Puzović, Radovan, Stojanović, Jagoš, Jevtić, Ivana, Popović, Mihajlo, Pjević, Miloš, "An approach for automatic free form surface milling machining technology design" in 39th INTERNATIONAL CONFERENCE ON PRODUCTION ENGINEERING OF SERBIA - ICPES 2023 (2023):227-230,
https://hdl.handle.net/21.15107/rcub_machinery_7113 .

Impact of polymer types on applicability in rapid tooling

Pjević, Miloš; Popović, Mihajlo; Milutinović, Mladomir; Movrin, Dejan; Stefanović, Ljiljana

(Society of Production Engineering, 2023)

TY  - CONF
AU  - Pjević, Miloš
AU  - Popović, Mihajlo
AU  - Milutinović, Mladomir
AU  - Movrin, Dejan
AU  - Stefanović, Ljiljana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7315
AB  - In the last decade, owing to its accessibility, additive technologies have been occupying an increasingly significant percentage share in the production of new components. Whether it pertains to the creation of prototypes, test or final tools, and even direct manufacturing, additive technologies can be found in all spheres of product development. One of the key advantages of additive technologies is reducing the final cost due to the relatively low cost of implementing said technology. For this reason, it's not surprising that recent research in the field of additive technologies frequently focuses on rapid tooling, specifically on injection molding parts. By reducing the cost of tools, a substantial impact can be made on the final product's cost and, consequently, on market competitiveness. However, the application of additive technologies in the realm of polymer injection molding is not straightforward and presents numerous challenges. Given that this involves creating polymer parts within a tool that is also made of polymer, the task can be exceptionally complex. Physical properties such as material density or the interaction between two polymers can adversely influence the polymer injection molding process within a polymeric insert. This paper will present the influence of two types of polymers (PP and HDPE) on manufacturing (injection molding) parameters and the potential of their application in the rapid tooling.
PB  - Society of Production Engineering
PB  - University of Novi Sad, faculty of Technical Sciences
C3  - 39th International Conference on Production Engineering of Serbia
T1  - Impact of polymer types on applicability in rapid tooling
EP  - 306
SP  - 301
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7315
ER  - 
@conference{
author = "Pjević, Miloš and Popović, Mihajlo and Milutinović, Mladomir and Movrin, Dejan and Stefanović, Ljiljana",
year = "2023",
abstract = "In the last decade, owing to its accessibility, additive technologies have been occupying an increasingly significant percentage share in the production of new components. Whether it pertains to the creation of prototypes, test or final tools, and even direct manufacturing, additive technologies can be found in all spheres of product development. One of the key advantages of additive technologies is reducing the final cost due to the relatively low cost of implementing said technology. For this reason, it's not surprising that recent research in the field of additive technologies frequently focuses on rapid tooling, specifically on injection molding parts. By reducing the cost of tools, a substantial impact can be made on the final product's cost and, consequently, on market competitiveness. However, the application of additive technologies in the realm of polymer injection molding is not straightforward and presents numerous challenges. Given that this involves creating polymer parts within a tool that is also made of polymer, the task can be exceptionally complex. Physical properties such as material density or the interaction between two polymers can adversely influence the polymer injection molding process within a polymeric insert. This paper will present the influence of two types of polymers (PP and HDPE) on manufacturing (injection molding) parameters and the potential of their application in the rapid tooling.",
publisher = "Society of Production Engineering, University of Novi Sad, faculty of Technical Sciences",
journal = "39th International Conference on Production Engineering of Serbia",
title = "Impact of polymer types on applicability in rapid tooling",
pages = "306-301",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7315"
}
Pjević, M., Popović, M., Milutinović, M., Movrin, D.,& Stefanović, L.. (2023). Impact of polymer types on applicability in rapid tooling. in 39th International Conference on Production Engineering of Serbia
Society of Production Engineering., 301-306.
https://hdl.handle.net/21.15107/rcub_machinery_7315
Pjević M, Popović M, Milutinović M, Movrin D, Stefanović L. Impact of polymer types on applicability in rapid tooling. in 39th International Conference on Production Engineering of Serbia. 2023;:301-306.
https://hdl.handle.net/21.15107/rcub_machinery_7315 .
Pjević, Miloš, Popović, Mihajlo, Milutinović, Mladomir, Movrin, Dejan, Stefanović, Ljiljana, "Impact of polymer types on applicability in rapid tooling" in 39th International Conference on Production Engineering of Serbia (2023):301-306,
https://hdl.handle.net/21.15107/rcub_machinery_7315 .

Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts

Stefanović, Ljiljana; Movrin, Dejan; Milutinović, Mladomir; Popović, Mihajlo; Pjević, Miloš

(Society of Production Engineering, 2023)

TY  - CONF
AU  - Stefanović, Ljiljana
AU  - Movrin, Dejan
AU  - Milutinović, Mladomir
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7313
AB  - Polypropylene (PP) and high-density polyethylene (HDPE) are the most common polymers in modern industrial plastic part production. Both materials can be easily shaped through injection molding, which is one of the most widespread processing methods for polymer materials. When manufacturing parts from PP and HDPE, it is necessary to achieve the required mechanical characteristics that depend on processing parameters (melt temperature, tool temperature, cooling time, etc.). This paper presents research on the impact of tool temperature on the tensile strength of injection-molded test specimens made from PP and HDPE. Since both materials contain amorphous and crystalline phases, changes in the ratio of phases are possible depending on the tool temperature, which leads to mechanical properties (tensile strength) changes. In the experimental assessment of tensile strength for polypropylene (PP) and high-density polyethylene (HDPE) specimens, conducted at varying tool temperatures (20°C, 50°C, and 80°C), notable disparities in tensile strength values were observed. These variations were attributed to alterations in the crystalline phase content within the materials, instigated by disparate cooling rates resulting from utilizing distinct tool temperatures.
PB  - Society of Production Engineering
PB  - University of Novi Sad, faculty of Technical Sciences
C3  - 39th International Conference on Production Engineering of Serbia
T1  - Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts
EP  - 300
SP  - 295
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7313
ER  - 
@conference{
author = "Stefanović, Ljiljana and Movrin, Dejan and Milutinović, Mladomir and Popović, Mihajlo and Pjević, Miloš",
year = "2023",
abstract = "Polypropylene (PP) and high-density polyethylene (HDPE) are the most common polymers in modern industrial plastic part production. Both materials can be easily shaped through injection molding, which is one of the most widespread processing methods for polymer materials. When manufacturing parts from PP and HDPE, it is necessary to achieve the required mechanical characteristics that depend on processing parameters (melt temperature, tool temperature, cooling time, etc.). This paper presents research on the impact of tool temperature on the tensile strength of injection-molded test specimens made from PP and HDPE. Since both materials contain amorphous and crystalline phases, changes in the ratio of phases are possible depending on the tool temperature, which leads to mechanical properties (tensile strength) changes. In the experimental assessment of tensile strength for polypropylene (PP) and high-density polyethylene (HDPE) specimens, conducted at varying tool temperatures (20°C, 50°C, and 80°C), notable disparities in tensile strength values were observed. These variations were attributed to alterations in the crystalline phase content within the materials, instigated by disparate cooling rates resulting from utilizing distinct tool temperatures.",
publisher = "Society of Production Engineering, University of Novi Sad, faculty of Technical Sciences",
journal = "39th International Conference on Production Engineering of Serbia",
title = "Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts",
pages = "300-295",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7313"
}
Stefanović, L., Movrin, D., Milutinović, M., Popović, M.,& Pjević, M.. (2023). Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts. in 39th International Conference on Production Engineering of Serbia
Society of Production Engineering., 295-300.
https://hdl.handle.net/21.15107/rcub_machinery_7313
Stefanović L, Movrin D, Milutinović M, Popović M, Pjević M. Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts. in 39th International Conference on Production Engineering of Serbia. 2023;:295-300.
https://hdl.handle.net/21.15107/rcub_machinery_7313 .
Stefanović, Ljiljana, Movrin, Dejan, Milutinović, Mladomir, Popović, Mihajlo, Pjević, Miloš, "Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts" in 39th International Conference on Production Engineering of Serbia (2023):295-300,
https://hdl.handle.net/21.15107/rcub_machinery_7313 .

State of the art in the field of cold forging tools

Varničić, Ilija; Pjević, Miloš; Popović, Mihajlo

(University of Kragujevac, Faculty of Mechanical and Civil Engineering, 2023)

TY  - CONF
AU  - Varničić, Ilija
AU  - Pjević, Miloš
AU  - Popović, Mihajlo
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7312
AB  - This paper chronologically presents the development of the geometry of cold forging tools, as well as the factors that influence the tool lifespan. Tools for plastic deformation processing are of strategic importance for large-scale and mass production. Their lifespan and properties have a great impact on process productivity and product quality. Cold forging represents an efficient metal processing technique through plastic deformation with significant material savings. One of the main challenges of this processing technique is managing high contact normal stresses in the tool, which can lead to serious tool damage. In order to better understand tribological phenomena in the cold forging process, which involve tool wear, fatigue, and failure, this paper will present a practical example of how to improve tool lifespan from the perspective of tool design and construction. The example taken is a forging tool for manufacturing a screw in four operations. The distribution of contact pressure in the contact zone between the working tool and the workpiece was examined using the finite element method for each of the geometries tested. This allowed for a comparison of the service life of the matrix for each of the tested matrix geometries.
PB  - University of Kragujevac, Faculty of Mechanical and Civil Engineering
C3  - XI International Conference “Heavy Machinery-HM 2023”
T1  - State of the art in the field of cold forging tools
EP  - C.18
SP  - C.13
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7312
ER  - 
@conference{
author = "Varničić, Ilija and Pjević, Miloš and Popović, Mihajlo",
year = "2023",
abstract = "This paper chronologically presents the development of the geometry of cold forging tools, as well as the factors that influence the tool lifespan. Tools for plastic deformation processing are of strategic importance for large-scale and mass production. Their lifespan and properties have a great impact on process productivity and product quality. Cold forging represents an efficient metal processing technique through plastic deformation with significant material savings. One of the main challenges of this processing technique is managing high contact normal stresses in the tool, which can lead to serious tool damage. In order to better understand tribological phenomena in the cold forging process, which involve tool wear, fatigue, and failure, this paper will present a practical example of how to improve tool lifespan from the perspective of tool design and construction. The example taken is a forging tool for manufacturing a screw in four operations. The distribution of contact pressure in the contact zone between the working tool and the workpiece was examined using the finite element method for each of the geometries tested. This allowed for a comparison of the service life of the matrix for each of the tested matrix geometries.",
publisher = "University of Kragujevac, Faculty of Mechanical and Civil Engineering",
journal = "XI International Conference “Heavy Machinery-HM 2023”",
title = "State of the art in the field of cold forging tools",
pages = "C.18-C.13",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7312"
}
Varničić, I., Pjević, M.,& Popović, M.. (2023). State of the art in the field of cold forging tools. in XI International Conference “Heavy Machinery-HM 2023”
University of Kragujevac, Faculty of Mechanical and Civil Engineering., C.13-C.18.
https://hdl.handle.net/21.15107/rcub_machinery_7312
Varničić I, Pjević M, Popović M. State of the art in the field of cold forging tools. in XI International Conference “Heavy Machinery-HM 2023”. 2023;:C.13-C.18.
https://hdl.handle.net/21.15107/rcub_machinery_7312 .
Varničić, Ilija, Pjević, Miloš, Popović, Mihajlo, "State of the art in the field of cold forging tools" in XI International Conference “Heavy Machinery-HM 2023” (2023):C.13-C.18,
https://hdl.handle.net/21.15107/rcub_machinery_7312 .

Pomoćni pribor za ispitivanje ramova i pokretnih spojeva prozora i vrata

Mitrović, Nenad; Milošević, Miloš; Mladenović, Goran; Milovanović, Aleksa; Popović, Mihajlo; Kirin, Snežana; Ivanović, Ivana

(Zavod za intelektualnu svojinu Republike Srbije, 2020)

TY  - PAT
AU  - Mitrović, Nenad
AU  - Milošević, Miloš
AU  - Mladenović, Goran
AU  - Milovanović, Aleksa
AU  - Popović, Mihajlo
AU  - Kirin, Snežana
AU  - Ivanović, Ivana
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7201
AB  - Pomoćni pribor za ispitivanje ramova i pokretnih spojeva prozora i vrata omogućava ispitivanje različitih dimenzija ramova i pokretnih spojeva vrata i prozora. Pri tome koncepcija pribora omogućava i ispitivanje na različite vrste naprezanja. Pomoćni pribor potpunu funkcionalnost ostvaruje pomoću podsklopa za oslanjanje i određenog broja vijaka kojima se međusobno vezuju pojedinačni elementi i pritiskivača (4) koji se montira na pokretni deo kidalice (1), kojim se nanosi opterećenje na ispitivani ram (17) i pokretne spojeve (18). Konfiguracija pomoćnog pribora se koristi za ispitivanje pritisnih, zateznih i savojnih karakteristika ramova i pokretnih spojeva prozora i vrata. Pribor omogućava ispitivanje različitih oblika i dimenzija aluminijumskih i PVC ramova, kao i spojeva prozora i vrata (šarki) od čelika koje se primenjuju u različitim izvedbama ugradnje. Rezultat ispitivanja je maksimalna sila koju mogu da izdrže ispitivani ram i pokretni spojevi pred nastanak loma, kao i maksimalno pomeranje koje se javilo u toku ispitivanja.
PB  - Zavod za intelektualnu svojinu Republike Srbije
T2  - Zavod za intelektualnu svojinu Republike Srbije
T1  - Pomoćni pribor za ispitivanje ramova i pokretnih spojeva prozora i vrata
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7201
ER  - 
@misc{
author = "Mitrović, Nenad and Milošević, Miloš and Mladenović, Goran and Milovanović, Aleksa and Popović, Mihajlo and Kirin, Snežana and Ivanović, Ivana",
year = "2020",
abstract = "Pomoćni pribor za ispitivanje ramova i pokretnih spojeva prozora i vrata omogućava ispitivanje različitih dimenzija ramova i pokretnih spojeva vrata i prozora. Pri tome koncepcija pribora omogućava i ispitivanje na različite vrste naprezanja. Pomoćni pribor potpunu funkcionalnost ostvaruje pomoću podsklopa za oslanjanje i određenog broja vijaka kojima se međusobno vezuju pojedinačni elementi i pritiskivača (4) koji se montira na pokretni deo kidalice (1), kojim se nanosi opterećenje na ispitivani ram (17) i pokretne spojeve (18). Konfiguracija pomoćnog pribora se koristi za ispitivanje pritisnih, zateznih i savojnih karakteristika ramova i pokretnih spojeva prozora i vrata. Pribor omogućava ispitivanje različitih oblika i dimenzija aluminijumskih i PVC ramova, kao i spojeva prozora i vrata (šarki) od čelika koje se primenjuju u različitim izvedbama ugradnje. Rezultat ispitivanja je maksimalna sila koju mogu da izdrže ispitivani ram i pokretni spojevi pred nastanak loma, kao i maksimalno pomeranje koje se javilo u toku ispitivanja.",
publisher = "Zavod za intelektualnu svojinu Republike Srbije",
journal = "Zavod za intelektualnu svojinu Republike Srbije",
title = "Pomoćni pribor za ispitivanje ramova i pokretnih spojeva prozora i vrata",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7201"
}
Mitrović, N., Milošević, M., Mladenović, G., Milovanović, A., Popović, M., Kirin, S.,& Ivanović, I.. (2020). Pomoćni pribor za ispitivanje ramova i pokretnih spojeva prozora i vrata. in Zavod za intelektualnu svojinu Republike Srbije
Zavod za intelektualnu svojinu Republike Srbije..
https://hdl.handle.net/21.15107/rcub_machinery_7201
Mitrović N, Milošević M, Mladenović G, Milovanović A, Popović M, Kirin S, Ivanović I. Pomoćni pribor za ispitivanje ramova i pokretnih spojeva prozora i vrata. in Zavod za intelektualnu svojinu Republike Srbije. 2020;.
https://hdl.handle.net/21.15107/rcub_machinery_7201 .
Mitrović, Nenad, Milošević, Miloš, Mladenović, Goran, Milovanović, Aleksa, Popović, Mihajlo, Kirin, Snežana, Ivanović, Ivana, "Pomoćni pribor za ispitivanje ramova i pokretnih spojeva prozora i vrata" in Zavod za intelektualnu svojinu Republike Srbije (2020),
https://hdl.handle.net/21.15107/rcub_machinery_7201 .

Development of conceptual solution of experimental setting for controlled application of impact force on the head model using DIC

Milošević, Miloš; Trajković, Isaak; Ivanov, Toni; Popović, Mihajlo; Mitrović, Nenad; Milovanović, Aleksa; Jovanović Saković, Jelena

(2020)

TY  - CONF
AU  - Milošević, Miloš
AU  - Trajković, Isaak
AU  - Ivanov, Toni
AU  - Popović, Mihajlo
AU  - Mitrović, Nenad
AU  - Milovanović, Aleksa
AU  - Jovanović Saković, Jelena
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7361
AB  - After noting that head and neck injuries are very common in martial arts sports, a growing need for developing
helmet materials and models appeared. In addition to the problems that arise in terms of design, there are also
problems in terms of developing the material from which the helmets are made. In terms of design, the helmet
must interfere as little as possible with the mobility of the head and neck and visibility, while in terms of material
development, it is necessary to ensure optimal mechanical properties of the material from which the helmet is
made, which is simultaneously the biggest challenge for helmet manufacturers. In the process of developing
models and materials of helmets, there was a need for research in which the development of experimental
settings will credibly simulate the blows that are exchanged during a sports fight. The aim of this paper is to
make an experimental setup to enable testing of helmets from different manufacturers as well as testing of
newer generation helmets. This paper presents a conceptual solution of an experimental setup in which
impacts are simulated in controlled conditions, taking into account that the impact image applied to the head
model is controlled, so that it is possible to simulate different types of impacts while maintaining the same
boundary conditions.
C3  - International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor)
T1  - Development of conceptual solution of experimental setting for controlled application of impact force on the head model using DIC
SP  - 30
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7361
ER  - 
@conference{
author = "Milošević, Miloš and Trajković, Isaak and Ivanov, Toni and Popović, Mihajlo and Mitrović, Nenad and Milovanović, Aleksa and Jovanović Saković, Jelena",
year = "2020",
abstract = "After noting that head and neck injuries are very common in martial arts sports, a growing need for developing
helmet materials and models appeared. In addition to the problems that arise in terms of design, there are also
problems in terms of developing the material from which the helmets are made. In terms of design, the helmet
must interfere as little as possible with the mobility of the head and neck and visibility, while in terms of material
development, it is necessary to ensure optimal mechanical properties of the material from which the helmet is
made, which is simultaneously the biggest challenge for helmet manufacturers. In the process of developing
models and materials of helmets, there was a need for research in which the development of experimental
settings will credibly simulate the blows that are exchanged during a sports fight. The aim of this paper is to
make an experimental setup to enable testing of helmets from different manufacturers as well as testing of
newer generation helmets. This paper presents a conceptual solution of an experimental setup in which
impacts are simulated in controlled conditions, taking into account that the impact image applied to the head
model is controlled, so that it is possible to simulate different types of impacts while maintaining the same
boundary conditions.",
journal = "International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor)",
title = "Development of conceptual solution of experimental setting for controlled application of impact force on the head model using DIC",
pages = "30",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7361"
}
Milošević, M., Trajković, I., Ivanov, T., Popović, M., Mitrović, N., Milovanović, A.,& Jovanović Saković, J.. (2020). Development of conceptual solution of experimental setting for controlled application of impact force on the head model using DIC. in International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor), 30.
https://hdl.handle.net/21.15107/rcub_machinery_7361
Milošević M, Trajković I, Ivanov T, Popović M, Mitrović N, Milovanović A, Jovanović Saković J. Development of conceptual solution of experimental setting for controlled application of impact force on the head model using DIC. in International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor). 2020;:30.
https://hdl.handle.net/21.15107/rcub_machinery_7361 .
Milošević, Miloš, Trajković, Isaak, Ivanov, Toni, Popović, Mihajlo, Mitrović, Nenad, Milovanović, Aleksa, Jovanović Saković, Jelena, "Development of conceptual solution of experimental setting for controlled application of impact force on the head model using DIC" in International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor) (2020):30,
https://hdl.handle.net/21.15107/rcub_machinery_7361 .

Experimental determination of type of fracture PLA specimens in the function of printing conditions

Popović, Mihajlo; Pjević, Miloš; Mladenović, Goran; Tanović, Ljubodrag; Milošević, Miloš; Milovanović, Aleksa; Milošević, Nenad

(Innovation Center of Faculty of Mechanical Engineering, 2019)

TY  - CONF
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
AU  - Mladenović, Goran
AU  - Tanović, Ljubodrag
AU  - Milošević, Miloš
AU  - Milovanović, Aleksa
AU  - Milošević, Nenad
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7358
AB  - Fused Filament Fabrication (FFF) represent one of the technologies to process polymer materials in the way
of rapid prototyping. Parts produced by this method not so rarely have good mechanical properties in the
tangential direction in relation to the direction of the layers, but at the same time poor in the normal direction.
In order to produce a part that has desired mechanical properties in all directions, it is necessary to precisely
established printing conditions, which is one of the goals of this paper. Tensile strength experiments were
conducted on bio-based plastic PLA (polylactic acid) specimens. Specimens were produced on a 3D printer,
with printing speed from 40 up to 120 mm/min, and nozzle temperature from 170 up to 210 °C. It was
established that tensile strength has a great dependence on the printing conditions. Also, the type of fracture
varies depending on printing temperature. Although there is a trend of maximal deformation growth with
increasing printing temperature, at lower printing temperature, more ductile fracture of the specimens occurs.
Increasing the printing temperature, fracture of the specimens becomes more brittle. At the transition from one
to another, tearing of the specimens occur. Such results play a key role in the successful implementation of
such a processing type of polymer materials in the automotive, aerospace, medical, etc. industries.
PB  - Innovation Center of Faculty of Mechanical Engineering
C3  - International conference of experimental and numerical investigations and new technologies (2019 ; Zlatibor)
T1  - Experimental determination of type of fracture PLA specimens in the function of printing conditions
SP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7358
ER  - 
@conference{
author = "Popović, Mihajlo and Pjević, Miloš and Mladenović, Goran and Tanović, Ljubodrag and Milošević, Miloš and Milovanović, Aleksa and Milošević, Nenad",
year = "2019",
abstract = "Fused Filament Fabrication (FFF) represent one of the technologies to process polymer materials in the way
of rapid prototyping. Parts produced by this method not so rarely have good mechanical properties in the
tangential direction in relation to the direction of the layers, but at the same time poor in the normal direction.
In order to produce a part that has desired mechanical properties in all directions, it is necessary to precisely
established printing conditions, which is one of the goals of this paper. Tensile strength experiments were
conducted on bio-based plastic PLA (polylactic acid) specimens. Specimens were produced on a 3D printer,
with printing speed from 40 up to 120 mm/min, and nozzle temperature from 170 up to 210 °C. It was
established that tensile strength has a great dependence on the printing conditions. Also, the type of fracture
varies depending on printing temperature. Although there is a trend of maximal deformation growth with
increasing printing temperature, at lower printing temperature, more ductile fracture of the specimens occurs.
Increasing the printing temperature, fracture of the specimens becomes more brittle. At the transition from one
to another, tearing of the specimens occur. Such results play a key role in the successful implementation of
such a processing type of polymer materials in the automotive, aerospace, medical, etc. industries.",
publisher = "Innovation Center of Faculty of Mechanical Engineering",
journal = "International conference of experimental and numerical investigations and new technologies (2019 ; Zlatibor)",
title = "Experimental determination of type of fracture PLA specimens in the function of printing conditions",
pages = "42",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7358"
}
Popović, M., Pjević, M., Mladenović, G., Tanović, L., Milošević, M., Milovanović, A.,& Milošević, N.. (2019). Experimental determination of type of fracture PLA specimens in the function of printing conditions. in International conference of experimental and numerical investigations and new technologies (2019 ; Zlatibor)
Innovation Center of Faculty of Mechanical Engineering., 42.
https://hdl.handle.net/21.15107/rcub_machinery_7358
Popović M, Pjević M, Mladenović G, Tanović L, Milošević M, Milovanović A, Milošević N. Experimental determination of type of fracture PLA specimens in the function of printing conditions. in International conference of experimental and numerical investigations and new technologies (2019 ; Zlatibor). 2019;:42.
https://hdl.handle.net/21.15107/rcub_machinery_7358 .
Popović, Mihajlo, Pjević, Miloš, Mladenović, Goran, Tanović, Ljubodrag, Milošević, Miloš, Milovanović, Aleksa, Milošević, Nenad, "Experimental determination of type of fracture PLA specimens in the function of printing conditions" in International conference of experimental and numerical investigations and new technologies (2019 ; Zlatibor) (2019):42,
https://hdl.handle.net/21.15107/rcub_machinery_7358 .

Софтверско решење за оптимизацију путање алата при обради сложених површина глодањем

Mladenović, Goran; Tanović, Ljubodrag; Puzović, Radovan; Marković, Biljana; Popović, Mihajlo; Pjević, Miloš

(Univerzitet u Beogradu - Mašinski fakultet, 2016)

TY  - GEN
AU  - Mladenović, Goran
AU  - Tanović, Ljubodrag
AU  - Puzović, Radovan
AU  - Marković, Biljana
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7382
AB  - Техничко решење се односи на проблем генерисања и оптимизације путање алата за процес завршне обраде, тј. добијање коначног облика делова са сложеним површинама тро осним глодањем лоптастим глодалом (Point Milling) варирањем брзине помоћног кретања.
PB  - Univerzitet u Beogradu - Mašinski fakultet
T2  - Univerzitet u Beogradu - Mašinski fakultet
T1  - Софтверско решење за оптимизацију путање алата при обради сложених површина глодањем
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7382
ER  - 
@misc{
author = "Mladenović, Goran and Tanović, Ljubodrag and Puzović, Radovan and Marković, Biljana and Popović, Mihajlo and Pjević, Miloš",
year = "2016",
abstract = "Техничко решење се односи на проблем генерисања и оптимизације путање алата за процес завршне обраде, тј. добијање коначног облика делова са сложеним површинама тро осним глодањем лоптастим глодалом (Point Milling) варирањем брзине помоћног кретања.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet",
journal = "Univerzitet u Beogradu - Mašinski fakultet",
title = "Софтверско решење за оптимизацију путање алата при обради сложених површина глодањем",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7382"
}
Mladenović, G., Tanović, L., Puzović, R., Marković, B., Popović, M.,& Pjević, M.. (2016). Софтверско решење за оптимизацију путање алата при обради сложених површина глодањем. in Univerzitet u Beogradu - Mašinski fakultet
Univerzitet u Beogradu - Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_machinery_7382
Mladenović G, Tanović L, Puzović R, Marković B, Popović M, Pjević M. Софтверско решење за оптимизацију путање алата при обради сложених површина глодањем. in Univerzitet u Beogradu - Mašinski fakultet. 2016;.
https://hdl.handle.net/21.15107/rcub_machinery_7382 .
Mladenović, Goran, Tanović, Ljubodrag, Puzović, Radovan, Marković, Biljana, Popović, Mihajlo, Pjević, Miloš, "Софтверско решење за оптимизацију путање алата при обради сложених површина глодањем" in Univerzitet u Beogradu - Mašinski fakultet (2016),
https://hdl.handle.net/21.15107/rcub_machinery_7382 .

Analysis of stone micro-cutting mechanism using the example of granite and marble grinding

Tanović, Ljubodrag; Bojanić, Pavao; Puzović, Radovan; Popović, Mihajlo; Mladenović, Goran

(Niš : Faculty of Mechanical Engineering, 2011)

TY  - CONF
AU  - Tanović, Ljubodrag
AU  - Bojanić, Pavao
AU  - Puzović, Radovan
AU  - Popović, Mihajlo
AU  - Mladenović, Goran
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6927
AB  - The paper presents the results of to date investigations in the field of ornamental stone micro-cutting using the examples of granite and marble originating from the stone varieties of Serbian location. The diamond grain - machined stone (the "Josanica" granite and the "Plavi tok" marble) interaction was analyzed. The analysis also embraced the changes of the normal cutting force as a function of cutting speed and grain penetration depth in the chosen stone. Based on the grain traces (cracks) that occurred on the surface of the machined stone, the critical cutting depths, at which brittle cutting occurs, were established for the mentioned stones. The presented analysis is to be used for the grinding process optimization as a dominant ornamental stone machining technology with the aim of obtaining quality machined surfaces and preserving the stone surface structure and color.
PB  - Niš : Faculty of Mechanical Engineering
C3  - 34th International Conference on Production Engineering, 28.30. September, Niš, Serbia
T1  - Analysis of stone micro-cutting mechanism using the example of granite and marble grinding
EP  - 44
SP  - 41
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6927
ER  - 
@conference{
author = "Tanović, Ljubodrag and Bojanić, Pavao and Puzović, Radovan and Popović, Mihajlo and Mladenović, Goran",
year = "2011",
abstract = "The paper presents the results of to date investigations in the field of ornamental stone micro-cutting using the examples of granite and marble originating from the stone varieties of Serbian location. The diamond grain - machined stone (the "Josanica" granite and the "Plavi tok" marble) interaction was analyzed. The analysis also embraced the changes of the normal cutting force as a function of cutting speed and grain penetration depth in the chosen stone. Based on the grain traces (cracks) that occurred on the surface of the machined stone, the critical cutting depths, at which brittle cutting occurs, were established for the mentioned stones. The presented analysis is to be used for the grinding process optimization as a dominant ornamental stone machining technology with the aim of obtaining quality machined surfaces and preserving the stone surface structure and color.",
publisher = "Niš : Faculty of Mechanical Engineering",
journal = "34th International Conference on Production Engineering, 28.30. September, Niš, Serbia",
title = "Analysis of stone micro-cutting mechanism using the example of granite and marble grinding",
pages = "44-41",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6927"
}
Tanović, L., Bojanić, P., Puzović, R., Popović, M.,& Mladenović, G.. (2011). Analysis of stone micro-cutting mechanism using the example of granite and marble grinding. in 34th International Conference on Production Engineering, 28.30. September, Niš, Serbia
Niš : Faculty of Mechanical Engineering., 41-44.
https://hdl.handle.net/21.15107/rcub_machinery_6927
Tanović L, Bojanić P, Puzović R, Popović M, Mladenović G. Analysis of stone micro-cutting mechanism using the example of granite and marble grinding. in 34th International Conference on Production Engineering, 28.30. September, Niš, Serbia. 2011;:41-44.
https://hdl.handle.net/21.15107/rcub_machinery_6927 .
Tanović, Ljubodrag, Bojanić, Pavao, Puzović, Radovan, Popović, Mihajlo, Mladenović, Goran, "Analysis of stone micro-cutting mechanism using the example of granite and marble grinding" in 34th International Conference on Production Engineering, 28.30. September, Niš, Serbia (2011):41-44,
https://hdl.handle.net/21.15107/rcub_machinery_6927 .

Design and optimization for truss constructions using the software package autodesk inventor 2011®

Mladenović, Goran; Popović, Mihajlo

(Kraljevo : Faculty of Mechanical and Civil Engineering, 2011)

TY  - CONF
AU  - Mladenović, Goran
AU  - Popović, Mihajlo
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6928
AB  - The use  of truss  constructions is  frequent in mechanical  engineering. This  paper  describes  the procedures of construction and optimization for truss constrictions at the example of roof structure of the Hall. Frame  Analysis  is used  to  understand  the  structural integrity  for  given  frame  with  respect  to deformations and stresses, when subjected to various loading and constraints. Once when the criteria are defined, it is possible  to run the simulation and view the behavior  relative  to the conditions  which are defined. Simulations help to identify  performance issues and find better design  alternatives.  The paper doesn't gives the analysis of load,but structure optimization is performed  for defined load.In the process were used two approaches, change of beam geometry without changing the profile and change the profile without changing beam geometry.
PB  - Kraljevo : Faculty of Mechanical and Civil Engineering
C3  - VII Triennial International Conference Heavy Machinery – HM 2011
T1  - Design and optimization for truss constructions using the software package autodesk inventor 2011®
EP  - 32
SP  - 29
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6928
ER  - 
@conference{
author = "Mladenović, Goran and Popović, Mihajlo",
year = "2011",
abstract = "The use  of truss  constructions is  frequent in mechanical  engineering. This  paper  describes  the procedures of construction and optimization for truss constrictions at the example of roof structure of the Hall. Frame  Analysis  is used  to  understand  the  structural integrity  for  given  frame  with  respect  to deformations and stresses, when subjected to various loading and constraints. Once when the criteria are defined, it is possible  to run the simulation and view the behavior  relative  to the conditions  which are defined. Simulations help to identify  performance issues and find better design  alternatives.  The paper doesn't gives the analysis of load,but structure optimization is performed  for defined load.In the process were used two approaches, change of beam geometry without changing the profile and change the profile without changing beam geometry.",
publisher = "Kraljevo : Faculty of Mechanical and Civil Engineering",
journal = "VII Triennial International Conference Heavy Machinery – HM 2011",
title = "Design and optimization for truss constructions using the software package autodesk inventor 2011®",
pages = "32-29",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6928"
}
Mladenović, G.,& Popović, M.. (2011). Design and optimization for truss constructions using the software package autodesk inventor 2011®. in VII Triennial International Conference Heavy Machinery – HM 2011
Kraljevo : Faculty of Mechanical and Civil Engineering., 29-32.
https://hdl.handle.net/21.15107/rcub_machinery_6928
Mladenović G, Popović M. Design and optimization for truss constructions using the software package autodesk inventor 2011®. in VII Triennial International Conference Heavy Machinery – HM 2011. 2011;:29-32.
https://hdl.handle.net/21.15107/rcub_machinery_6928 .
Mladenović, Goran, Popović, Mihajlo, "Design and optimization for truss constructions using the software package autodesk inventor 2011®" in VII Triennial International Conference Heavy Machinery – HM 2011 (2011):29-32,
https://hdl.handle.net/21.15107/rcub_machinery_6928 .

Специфичности микрорезания камня на основе гранита

Tanović, Ljubodrag; Bojanić, Pavao; Popović, Mihajlo; Mladenović, Goran

(Kyiv : National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", 2011)

TY  - JOUR
AU  - Tanović, Ljubodrag
AU  - Bojanić, Pavao
AU  - Popović, Mihajlo
AU  - Mladenović, Goran
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6943
AB  - In this work results are indicated researches, conducted on the Machine-building faculty in Belgrade in area of micro cutting of fragile materials. Co-operation is here analyzed between diamond grain and processed granite. The change of normal making force of cutting in the function of speed of cutting and depth of penetration at micro cutting of two variants of granites is experimentally set from the location of Serbia. On the basis of tracks on a granite and arising up cracks the critical depth of penetration of grain is set, which fragile destruction is at. The indicated researches must help optimization of process of polishing and polish, being dominant technologies of final treatment of granite.
PB  - Kyiv : National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"
T2  - Висник Машинобудування
T1  - Специфичности микрорезания камня на основе гранита
EP  - 102
SP  - 99
VL  - 63
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6943
ER  - 
@article{
author = "Tanović, Ljubodrag and Bojanić, Pavao and Popović, Mihajlo and Mladenović, Goran",
year = "2011",
abstract = "In this work results are indicated researches, conducted on the Machine-building faculty in Belgrade in area of micro cutting of fragile materials. Co-operation is here analyzed between diamond grain and processed granite. The change of normal making force of cutting in the function of speed of cutting and depth of penetration at micro cutting of two variants of granites is experimentally set from the location of Serbia. On the basis of tracks on a granite and arising up cracks the critical depth of penetration of grain is set, which fragile destruction is at. The indicated researches must help optimization of process of polishing and polish, being dominant technologies of final treatment of granite.",
publisher = "Kyiv : National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"",
journal = "Висник Машинобудування",
title = "Специфичности микрорезания камня на основе гранита",
pages = "102-99",
volume = "63",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6943"
}
Tanović, L., Bojanić, P., Popović, M.,& Mladenović, G.. (2011). Специфичности микрорезания камня на основе гранита. in Висник Машинобудування
Kyiv : National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"., 63, 99-102.
https://hdl.handle.net/21.15107/rcub_machinery_6943
Tanović L, Bojanić P, Popović M, Mladenović G. Специфичности микрорезания камня на основе гранита. in Висник Машинобудування. 2011;63:99-102.
https://hdl.handle.net/21.15107/rcub_machinery_6943 .
Tanović, Ljubodrag, Bojanić, Pavao, Popović, Mihajlo, Mladenović, Goran, "Специфичности микрорезания камня на основе гранита" in Висник Машинобудування, 63 (2011):99-102,
https://hdl.handle.net/21.15107/rcub_machinery_6943 .

СПЕЦИФИKA МИКРОРЕЗАНИЯ ГРАНИТА

Tanović, Ljubodrag; Bojanić, Pavao; Popović, Mihajlo; Mladenović, Goran

(Житомирський державний технологічний університет, Житомир, 2011)

TY  - CONF
AU  - Tanović, Ljubodrag
AU  - Bojanić, Pavao
AU  - Popović, Mihajlo
AU  - Mladenović, Goran
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6929
PB  - Житомирський державний технологічний університет, Житомир
C3  - VII Международная научно-техническая конференция “Процеси Механiчної Обробки в Машинобудуванні 2011
T1  - СПЕЦИФИKA МИКРОРЕЗАНИЯ ГРАНИТА
EP  - 338
SP  - 328
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6929
ER  - 
@conference{
author = "Tanović, Ljubodrag and Bojanić, Pavao and Popović, Mihajlo and Mladenović, Goran",
year = "2011",
publisher = "Житомирський державний технологічний університет, Житомир",
journal = "VII Международная научно-техническая конференция “Процеси Механiчної Обробки в Машинобудуванні 2011",
title = "СПЕЦИФИKA МИКРОРЕЗАНИЯ ГРАНИТА",
pages = "338-328",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6929"
}
Tanović, L., Bojanić, P., Popović, M.,& Mladenović, G.. (2011). СПЕЦИФИKA МИКРОРЕЗАНИЯ ГРАНИТА. in VII Международная научно-техническая конференция “Процеси Механiчної Обробки в Машинобудуванні 2011
Житомирський державний технологічний університет, Житомир., 328-338.
https://hdl.handle.net/21.15107/rcub_machinery_6929
Tanović L, Bojanić P, Popović M, Mladenović G. СПЕЦИФИKA МИКРОРЕЗАНИЯ ГРАНИТА. in VII Международная научно-техническая конференция “Процеси Механiчної Обробки в Машинобудуванні 2011. 2011;:328-338.
https://hdl.handle.net/21.15107/rcub_machinery_6929 .
Tanović, Ljubodrag, Bojanić, Pavao, Popović, Mihajlo, Mladenović, Goran, "СПЕЦИФИKA МИКРОРЕЗАНИЯ ГРАНИТА" in VII Международная научно-техническая конференция “Процеси Механiчної Обробки в Машинобудуванні 2011 (2011):328-338,
https://hdl.handle.net/21.15107/rcub_machinery_6929 .

Nova metoda projektovanja i tehnologije izrade profilnih prizmatičnih – tangencijalnih strugarskih noževa

Tanović, Ljubodrag; Bojanić, Pavao; Puzović, Radovan; Popović, Mihajlo; Milutinović, Milan; Mladenović, Goran

(Univerzitet u Beogradu - Mašinski fakultet, 2010)

TY  - GEN
AU  - Tanović, Ljubodrag
AU  - Bojanić, Pavao
AU  - Puzović, Radovan
AU  - Popović, Mihajlo
AU  - Milutinović, Milan
AU  - Mladenović, Goran
PY  - 2010
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6950
AB  - Tehničko rešenje pripada oblasti novih metoda u domenu proizvodnih tehnologija.
PB  - Univerzitet u Beogradu - Mašinski fakultet
T2  - Univerzitet u Beogradu - Mašinski fakultet
T1  - Nova metoda projektovanja i tehnologije izrade profilnih prizmatičnih – tangencijalnih strugarskih noževa
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6950
ER  - 
@misc{
author = "Tanović, Ljubodrag and Bojanić, Pavao and Puzović, Radovan and Popović, Mihajlo and Milutinović, Milan and Mladenović, Goran",
year = "2010",
abstract = "Tehničko rešenje pripada oblasti novih metoda u domenu proizvodnih tehnologija.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet",
journal = "Univerzitet u Beogradu - Mašinski fakultet",
title = "Nova metoda projektovanja i tehnologije izrade profilnih prizmatičnih – tangencijalnih strugarskih noževa",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6950"
}
Tanović, L., Bojanić, P., Puzović, R., Popović, M., Milutinović, M.,& Mladenović, G.. (2010). Nova metoda projektovanja i tehnologije izrade profilnih prizmatičnih – tangencijalnih strugarskih noževa. in Univerzitet u Beogradu - Mašinski fakultet
Univerzitet u Beogradu - Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_machinery_6950
Tanović L, Bojanić P, Puzović R, Popović M, Milutinović M, Mladenović G. Nova metoda projektovanja i tehnologije izrade profilnih prizmatičnih – tangencijalnih strugarskih noževa. in Univerzitet u Beogradu - Mašinski fakultet. 2010;.
https://hdl.handle.net/21.15107/rcub_machinery_6950 .
Tanović, Ljubodrag, Bojanić, Pavao, Puzović, Radovan, Popović, Mihajlo, Milutinović, Milan, Mladenović, Goran, "Nova metoda projektovanja i tehnologije izrade profilnih prizmatičnih – tangencijalnih strugarskih noževa" in Univerzitet u Beogradu - Mašinski fakultet (2010),
https://hdl.handle.net/21.15107/rcub_machinery_6950 .