TY  - CONF
AU  - Stojanović, Milan
AU  - Ljubojević, Pavle
AU  - Lazović, Tatjana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6888
AB  - The involute is the most common shape of the gear tooth profile due to a number of its advantages
compared to other profiles used in practice. The main advantages are the same type of tool for making both meshed gears, simple geometry of the tool, simple control and measuring of the shape and dimensions of the teeth, as well as that the gear meshing is not sensitive to varying gears' centre distance. Involute gears made with the same cutting tool - toothed rack can mesh correctly, regardless of the number of teeth. This fact, as well as the simple shape of the blade (a straight line), contributed to the establishment of the toothed rack as the basic tool for making involute teeth. In engineering education in the field of machine design and machine elements, it is still important to consider in detail the theory of gear pairs. Students learn about the geometry of gears, the kinematics of gear meshing, the strength, calculation of load carrying capacity, service life and reliability of gear pairs in various applications. Regardless of modern information technologies, modelling and computer simulations, the classic, traditional way of learning (or possibly hybrid, as a combination of conventional and modern approaches) is still the most prevalent in teaching. At the same time, laboratory exercises are of essential importance. The existing design of the laboratory educational device for simulating the generation of gearing using a toothed rack is presented in this paper. Then its design was modelled in the SolidWorks program and an improved variant solution is suggested. Also, a simulation of the involute teeth shaping was performed using AutoCAD.
PB  - Faculty of Technical Sciences, University of Novi Sad Serbian Society for Geometry and Graphics SUGIG
C3  - Proceedings of 9th International Conference MoNGeometrija 2023, Novi Sad, Serbia
T1  - SIMULATION OF INVOLUTE GEAR TOOTH PROFILE SHAPING
EP  - 427
SP  - 417
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6888
ER  - 

@conference{
author = "Stojanović, Milan and Ljubojević, Pavle and Lazović, Tatjana",
year = "2023",
abstract = "The involute is the most common shape of the gear tooth profile due to a number of its advantages
compared to other profiles used in practice. The main advantages are the same type of tool for making both meshed gears, simple geometry of the tool, simple control and measuring of the shape and dimensions of the teeth, as well as that the gear meshing is not sensitive to varying gears' centre distance. Involute gears made with the same cutting tool - toothed rack can mesh correctly, regardless of the number of teeth. This fact, as well as the simple shape of the blade (a straight line), contributed to the establishment of the toothed rack as the basic tool for making involute teeth. In engineering education in the field of machine design and machine elements, it is still important to consider in detail the theory of gear pairs. Students learn about the geometry of gears, the kinematics of gear meshing, the strength, calculation of load carrying capacity, service life and reliability of gear pairs in various applications. Regardless of modern information technologies, modelling and computer simulations, the classic, traditional way of learning (or possibly hybrid, as a combination of conventional and modern approaches) is still the most prevalent in teaching. At the same time, laboratory exercises are of essential importance. The existing design of the laboratory educational device for simulating the generation of gearing using a toothed rack is presented in this paper. Then its design was modelled in the SolidWorks program and an improved variant solution is suggested. Also, a simulation of the involute teeth shaping was performed using AutoCAD.",
publisher = "Faculty of Technical Sciences, University of Novi Sad Serbian Society for Geometry and Graphics SUGIG",
journal = "Proceedings of 9th International Conference MoNGeometrija 2023, Novi Sad, Serbia",
title = "SIMULATION OF INVOLUTE GEAR TOOTH PROFILE SHAPING",
pages = "427-417",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6888"
}

Stojanović, M., Ljubojević, P.,& Lazović, T.. (2023). SIMULATION OF INVOLUTE GEAR TOOTH PROFILE SHAPING. in Proceedings of 9th International Conference MoNGeometrija 2023, Novi Sad, Serbia
Faculty of Technical Sciences, University of Novi Sad Serbian Society for Geometry and Graphics SUGIG., 417-427.
https://hdl.handle.net/21.15107/rcub_machinery_6888

Stojanović M, Ljubojević P, Lazović T. SIMULATION OF INVOLUTE GEAR TOOTH PROFILE SHAPING. in Proceedings of 9th International Conference MoNGeometrija 2023, Novi Sad, Serbia. 2023;:417-427.
https://hdl.handle.net/21.15107/rcub_machinery_6888 .

Stojanović, Milan, Ljubojević, Pavle, Lazović, Tatjana, "SIMULATION OF INVOLUTE GEAR TOOTH PROFILE SHAPING" in Proceedings of 9th International Conference MoNGeometrija 2023, Novi Sad, Serbia (2023):417-427,
https://hdl.handle.net/21.15107/rcub_machinery_6888 .

TY  - CONF
AU  - Ljubojević, Pavle
AU  - Simonović, Ivan
AU  - Lazović, Tatjana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6894
AB  - This paper investigates the load capacity of bolted flanged joints, which are a common type of mechanical joints used in machinery. Bolted joints offer several advantages, including easy maintenance and disassembly, sealing, reduction of vibrations and noise, and protection against pollution and moisture. However, they are also the weakest element in most structures, and their degradation can reduce the safety and reliability of the machine system. Using an analytical research method, the load capacity of two types shear-loaded bolted joints, fitted and clamped, was compared by varying the nominal thread diameter of the bolts, the number of bolts in a group joint, and the pitch diameter on which the bolts are mounted for torque transmission. The function that enables the reduction of the difference in load capacity between fitted and clamped bolted joints by varying their number and pitch diameter is derived in this paper. The research shows that with certain combinations of geometric characteristics and tightening conditions of clamped joints, the load capacity of clamped bolted joints can be improved. This study aims to provide the constructor with relevant practical data to make an appropriate choice of bolted joint type (fitted or clamped) by combining various influence parameters of group shear-loaded joint, and, at the same time, achieve the same desired load capacity or, in the case of different load capacities, to know the exact ratio of their safety factors.
PB  - Društvo za Integritet i Vek Konstrukcija “Prof dr Stojan Sedmak” –Belgrade– Serbia
C3  - 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), April 2-4, 2023, Belgrade, Serbia
T1  - Safety factor of the bolted flange joints
EP  - 44
SP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6894
ER  - 

@conference{
author = "Ljubojević, Pavle and Simonović, Ivan and Lazović, Tatjana",
year = "2023",
abstract = "This paper investigates the load capacity of bolted flanged joints, which are a common type of mechanical joints used in machinery. Bolted joints offer several advantages, including easy maintenance and disassembly, sealing, reduction of vibrations and noise, and protection against pollution and moisture. However, they are also the weakest element in most structures, and their degradation can reduce the safety and reliability of the machine system. Using an analytical research method, the load capacity of two types shear-loaded bolted joints, fitted and clamped, was compared by varying the nominal thread diameter of the bolts, the number of bolts in a group joint, and the pitch diameter on which the bolts are mounted for torque transmission. The function that enables the reduction of the difference in load capacity between fitted and clamped bolted joints by varying their number and pitch diameter is derived in this paper. The research shows that with certain combinations of geometric characteristics and tightening conditions of clamped joints, the load capacity of clamped bolted joints can be improved. This study aims to provide the constructor with relevant practical data to make an appropriate choice of bolted joint type (fitted or clamped) by combining various influence parameters of group shear-loaded joint, and, at the same time, achieve the same desired load capacity or, in the case of different load capacities, to know the exact ratio of their safety factors.",
publisher = "Društvo za Integritet i Vek Konstrukcija “Prof dr Stojan Sedmak” –Belgrade– Serbia",
journal = "2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), April 2-4, 2023, Belgrade, Serbia",
title = "Safety factor of the bolted flange joints",
pages = "44-44",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6894"
}

Ljubojević, P., Simonović, I.,& Lazović, T.. (2023). Safety factor of the bolted flange joints. in 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), April 2-4, 2023, Belgrade, Serbia
Društvo za Integritet i Vek Konstrukcija “Prof dr Stojan Sedmak” –Belgrade– Serbia., 44-44.
https://hdl.handle.net/21.15107/rcub_machinery_6894

Ljubojević P, Simonović I, Lazović T. Safety factor of the bolted flange joints. in 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), April 2-4, 2023, Belgrade, Serbia. 2023;:44-44.
https://hdl.handle.net/21.15107/rcub_machinery_6894 .

Ljubojević, Pavle, Simonović, Ivan, Lazović, Tatjana, "Safety factor of the bolted flange joints" in 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), April 2-4, 2023, Belgrade, Serbia (2023):44-44,
https://hdl.handle.net/21.15107/rcub_machinery_6894 .

TY  - CONF
AU  - Ljubojević, Pavle
AU  - Ćoćić, Aleksandar
AU  - Lazović, Tatjana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7167
AB  - This paper presents the mathematical model for determining the quantity of lubricant in contact between balls and raceways of a deep groove ball bearing. In the deep groove ball bearing, balls participate in transferring the load from one ring to another, as they pass through the contact zone [1]. In doing so, the balls are in mutual elastohydrodynamic lubrication (EHL) contact with the raceways [2]. In the EHL contact between the balls and the raceway, there is a certain amount of lubricant between contacting surfaces. The volume of lubricant in contact can be determined as the product of the contact zone's area multiplied by the thickness of the lubricant film between them. The relationship between the lubricant volume VLq (q = 1 for ball-outer ring contact, q = 2 for ball-inner ring contact) within the contact zone and the relative radial clearance e/δ0 (e – radial clearance; δ0 – contact deformation between ball and raceway) as well as the relative operational load FR/C (FR – operational load; C – bearing dynamic load rating) of the deep groove ball bearing 6206 is shown in Figure below. Based on the known quantity of lubricant volume VL within both contact zones, it becomes possible to estimate the concentration of contaminating particles that are entrapped in contact between ball raceways. This estimation can be related to the overall known concentration of abrasive particles within the bearing lubricant. Through this approach, it becomes feasible to assess and predict the level of abrasive wear occurring within bearing components during operation.
PB  - Trans Tech Publications Ltd, Switzerland
C3  - Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering
T1  - Impact of Ball Bearing Geometry and Operational Load on the Volume of the Lubricant in the Bearing's Loaded Zone
EP  - 61
SP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7167
ER  - 

@conference{
author = "Ljubojević, Pavle and Ćoćić, Aleksandar and Lazović, Tatjana",
year = "2023",
abstract = "This paper presents the mathematical model for determining the quantity of lubricant in contact between balls and raceways of a deep groove ball bearing. In the deep groove ball bearing, balls participate in transferring the load from one ring to another, as they pass through the contact zone [1]. In doing so, the balls are in mutual elastohydrodynamic lubrication (EHL) contact with the raceways [2]. In the EHL contact between the balls and the raceway, there is a certain amount of lubricant between contacting surfaces. The volume of lubricant in contact can be determined as the product of the contact zone's area multiplied by the thickness of the lubricant film between them. The relationship between the lubricant volume VLq (q = 1 for ball-outer ring contact, q = 2 for ball-inner ring contact) within the contact zone and the relative radial clearance e/δ0 (e – radial clearance; δ0 – contact deformation between ball and raceway) as well as the relative operational load FR/C (FR – operational load; C – bearing dynamic load rating) of the deep groove ball bearing 6206 is shown in Figure below. Based on the known quantity of lubricant volume VL within both contact zones, it becomes possible to estimate the concentration of contaminating particles that are entrapped in contact between ball raceways. This estimation can be related to the overall known concentration of abrasive particles within the bearing lubricant. Through this approach, it becomes feasible to assess and predict the level of abrasive wear occurring within bearing components during operation.",
publisher = "Trans Tech Publications Ltd, Switzerland",
journal = "Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering",
title = "Impact of Ball Bearing Geometry and Operational Load on the Volume of the Lubricant in the Bearing's Loaded Zone",
pages = "61-60",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7167"
}

Ljubojević, P., Ćoćić, A.,& Lazović, T.. (2023). Impact of Ball Bearing Geometry and Operational Load on the Volume of the Lubricant in the Bearing's Loaded Zone. in Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering
Trans Tech Publications Ltd, Switzerland., 60-61.
https://hdl.handle.net/21.15107/rcub_machinery_7167

Ljubojević P, Ćoćić A, Lazović T. Impact of Ball Bearing Geometry and Operational Load on the Volume of the Lubricant in the Bearing's Loaded Zone. in Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering. 2023;:60-61.
https://hdl.handle.net/21.15107/rcub_machinery_7167 .

Ljubojević, Pavle, Ćoćić, Aleksandar, Lazović, Tatjana, "Impact of Ball Bearing Geometry and Operational Load on the Volume of the Lubricant in the Bearing's Loaded Zone" in Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering (2023):60-61,
https://hdl.handle.net/21.15107/rcub_machinery_7167 .

TY  - CONF
AU  - Ljubojević, Pavle
AU  - Marinković, Aleksandar
AU  - Lazović, Tatjana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7168
AB  - The rapid development of additive manufacturing technologies has opened novel opportunities for producing metal components with a variety of uses. 3D printing of metals provides the capability to produce parts with complex geometry and offers design freedom that cannot be achieved through conventional methods. That is the reason why 3D printed metal parts are increasingly finding applications in areas such as automotive, aerospace, and tool manufacturing. Surface properties of 3D printed metal components are of great importance for the functionality of machine systems, because they often operate under conditions where contact stresses occur. There is just one standard that deals with the measurement and characterization of the surface texture of 3D printed metals – ASTM F3624-23 [1]. Generally, methods for testing surface properties are divided into two groups: non-destructive and destructive methods. The most commonly nondestructive methods for the determination of surface roughness are SEM, EDS, and XRD analysis. Also, all other ultrasonic thermographic, laser, atomic force microscopy (AFM), X-ray, magnetic, and eddy current methods (ETC) can be applied, but their limitations must be taken into account. Usually, post-processing methods are used to reduce the roughness of parts. It has been shown for stainless steel 316L that shot peening can reduce up to 50% of the average surface roughness [2]. Tribological properties are very important in cases where contacting parts is in the relative motion.For determining tribological properties well-known testing methods are adapted for 3D printed metals. The most commonly used are dry erosion, slurry erosion and high-stress abrasion tests on stainless steel 316. Testing procedures of ASTM B611 and ASTM G65 standards are used for determining wear properties of 3D printed cemented carbide, which is not metal, but that procedures can be applied on 3D printed metals [3]. For measuring the hardness of 3D printed metals the Vickers method is most frequently used. A large number of parameters such as AM technology, printing direction, postprocessing, and layer thickness influence surface properties. In general, surface characteristics of 3D printed metals are not extensively researched and can represent a significant area for investigation, especially when considering all influencing parameters.
PB  - Trans Tech Publications Ltd, Switzerland
C3  - Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering
T1  - Testing Surface Properties of 3D Printed Metals
EP  - 62
SP  - 62
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7168
ER  - 

@conference{
author = "Ljubojević, Pavle and Marinković, Aleksandar and Lazović, Tatjana",
year = "2023",
abstract = "The rapid development of additive manufacturing technologies has opened novel opportunities for producing metal components with a variety of uses. 3D printing of metals provides the capability to produce parts with complex geometry and offers design freedom that cannot be achieved through conventional methods. That is the reason why 3D printed metal parts are increasingly finding applications in areas such as automotive, aerospace, and tool manufacturing. Surface properties of 3D printed metal components are of great importance for the functionality of machine systems, because they often operate under conditions where contact stresses occur. There is just one standard that deals with the measurement and characterization of the surface texture of 3D printed metals – ASTM F3624-23 [1]. Generally, methods for testing surface properties are divided into two groups: non-destructive and destructive methods. The most commonly nondestructive methods for the determination of surface roughness are SEM, EDS, and XRD analysis. Also, all other ultrasonic thermographic, laser, atomic force microscopy (AFM), X-ray, magnetic, and eddy current methods (ETC) can be applied, but their limitations must be taken into account. Usually, post-processing methods are used to reduce the roughness of parts. It has been shown for stainless steel 316L that shot peening can reduce up to 50% of the average surface roughness [2]. Tribological properties are very important in cases where contacting parts is in the relative motion.For determining tribological properties well-known testing methods are adapted for 3D printed metals. The most commonly used are dry erosion, slurry erosion and high-stress abrasion tests on stainless steel 316. Testing procedures of ASTM B611 and ASTM G65 standards are used for determining wear properties of 3D printed cemented carbide, which is not metal, but that procedures can be applied on 3D printed metals [3]. For measuring the hardness of 3D printed metals the Vickers method is most frequently used. A large number of parameters such as AM technology, printing direction, postprocessing, and layer thickness influence surface properties. In general, surface characteristics of 3D printed metals are not extensively researched and can represent a significant area for investigation, especially when considering all influencing parameters.",
publisher = "Trans Tech Publications Ltd, Switzerland",
journal = "Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering",
title = "Testing Surface Properties of 3D Printed Metals",
pages = "62-62",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7168"
}

Ljubojević, P., Marinković, A.,& Lazović, T.. (2023). Testing Surface Properties of 3D Printed Metals. in Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering
Trans Tech Publications Ltd, Switzerland., 62-62.
https://hdl.handle.net/21.15107/rcub_machinery_7168

Ljubojević P, Marinković A, Lazović T. Testing Surface Properties of 3D Printed Metals. in Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering. 2023;:62-62.
https://hdl.handle.net/21.15107/rcub_machinery_7168 .

Ljubojević, Pavle, Marinković, Aleksandar, Lazović, Tatjana, "Testing Surface Properties of 3D Printed Metals" in Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering (2023):62-62,
https://hdl.handle.net/21.15107/rcub_machinery_7168 .

TY  - JOUR
AU  - Lazović, Tatjana
AU  - Ljubojević, Pavle
AU  - Simonović, Ivan
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6801
AB  - Bolted joints are the most common and primary form of joints in most machines. The directions of research in this area mostly relate to strength, stiffness, load-carrying capacity, causes of failure,  temperature influences etc. Fitted and clamped group bolted joints shear-loaded with torque are analyzed in this paper. A comparative analysis of their load-carrying capacity was performed. When the factor of safety (FOS) ratio of fitted and clamped bolts was determined, the geometric characteristics were varied so that this ratio was reduced, i.e. their load-carrying capacities became close. The carried-out research aims to provide the constructor with relevant data for the selection and application of the appropriate type of bolted joint. Using an analytical research method, the nominal thread diameter of the bolts, the number of bolts in a group joint, and the pitch diameter on which the bolts are mounted were varied. Useful practical results have been obtained, based on which the designer can make a choice of the appropriate type of shear-loaded bolted joint (fitted or clamped) and combine different influence parameters of the group joint (number of bolts and pitch diameter) to achieve the same load-carrying capacity or, in the case of different load-carrying capacity, to know in what relation would be their FOS.
PB  - International Engineering and Technology Institute (IETI)
T2  - IETI Transactions on Engineering Research and Practice
T1  - LOAD-CARRYING CAPACITY OF SHEAR-LOADED BOLTED JOINTS
EP  - 34
IS  - 1
SP  - 18
VL  - 7
DO  - DOI 10.6723/TERP.202303_7(1).0003
ER  - 

@article{
author = "Lazović, Tatjana and Ljubojević, Pavle and Simonović, Ivan",
year = "2023",
abstract = "Bolted joints are the most common and primary form of joints in most machines. The directions of research in this area mostly relate to strength, stiffness, load-carrying capacity, causes of failure,  temperature influences etc. Fitted and clamped group bolted joints shear-loaded with torque are analyzed in this paper. A comparative analysis of their load-carrying capacity was performed. When the factor of safety (FOS) ratio of fitted and clamped bolts was determined, the geometric characteristics were varied so that this ratio was reduced, i.e. their load-carrying capacities became close. The carried-out research aims to provide the constructor with relevant data for the selection and application of the appropriate type of bolted joint. Using an analytical research method, the nominal thread diameter of the bolts, the number of bolts in a group joint, and the pitch diameter on which the bolts are mounted were varied. Useful practical results have been obtained, based on which the designer can make a choice of the appropriate type of shear-loaded bolted joint (fitted or clamped) and combine different influence parameters of the group joint (number of bolts and pitch diameter) to achieve the same load-carrying capacity or, in the case of different load-carrying capacity, to know in what relation would be their FOS.",
publisher = "International Engineering and Technology Institute (IETI)",
journal = "IETI Transactions on Engineering Research and Practice",
title = "LOAD-CARRYING CAPACITY OF SHEAR-LOADED BOLTED JOINTS",
pages = "34-18",
number = "1",
volume = "7",
doi = "DOI 10.6723/TERP.202303_7(1).0003"
}

Lazović, T., Ljubojević, P.,& Simonović, I.. (2023). LOAD-CARRYING CAPACITY OF SHEAR-LOADED BOLTED JOINTS. in IETI Transactions on Engineering Research and Practice
International Engineering and Technology Institute (IETI)., 7(1), 18-34.
https://doi.org/DOI 10.6723/TERP.202303_7(1).0003

Lazović T, Ljubojević P, Simonović I. LOAD-CARRYING CAPACITY OF SHEAR-LOADED BOLTED JOINTS. in IETI Transactions on Engineering Research and Practice. 2023;7(1):18-34.
doi:DOI 10.6723/TERP.202303_7(1).0003 .

Lazović, Tatjana, Ljubojević, Pavle, Simonović, Ivan, "LOAD-CARRYING CAPACITY OF SHEAR-LOADED BOLTED JOINTS" in IETI Transactions on Engineering Research and Practice, 7, no. 1 (2023):18-34,
https://doi.org/DOI 10.6723/TERP.202303_7(1).0003 . .

TY  - JOUR
AU  - Ljubojević, Pavle
AU  - Lazović, Tatjana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6870
AB  - The influence of the bolt size and the width of the joint members/bolt diameter ratio (relative clamped length) on the stiffness coefficient of the bolt and joint members, as well as on the ratio of these stiffness coefficients are discussed in this paper. The individual stiffness coefficients of the bolt and the joint members decrease with the increase of the relative clamped length and the decrease of the bolt size. However, the stiffness ratio of the joint members and the bolt increases with the increase of the relative clamped length. Of the considered bolts M6... M24, the bolted joint with the M6 bolt has the highest stiffness ratio of the joint members and the bolt, and the bolted joint with the M12 bolt has the lowest stiffness ratio. When a bolted joint is loaded with a variable working load, then the dynamic safety factor (DSF) is used for evaluating the joint load capacity. The DSF increases with a decrease in the stiffness of the bolted joint, ie by increasing the relative clamped length of the bolted joint. For the same conditions analyzed, the bolted joint with M6 bolt has the largest DSF, and the bolted joint with M12 bolt has the smallest DSF. The obtained result can be used by engineers to evaluate the load-carrying capacity of dynamically tension-loaded bolted joints.
T2  - Engineering Today
T1  - Stiffness as a criterion of dynamic load carrying capacity of tension-loaded bolted joints
EP  - 49
IS  - 1
SP  - 39
VL  - 2
DO  - 10.5937/engtoday2300004L
ER  - 

@article{
author = "Ljubojević, Pavle and Lazović, Tatjana",
year = "2023",
abstract = "The influence of the bolt size and the width of the joint members/bolt diameter ratio (relative clamped length) on the stiffness coefficient of the bolt and joint members, as well as on the ratio of these stiffness coefficients are discussed in this paper. The individual stiffness coefficients of the bolt and the joint members decrease with the increase of the relative clamped length and the decrease of the bolt size. However, the stiffness ratio of the joint members and the bolt increases with the increase of the relative clamped length. Of the considered bolts M6... M24, the bolted joint with the M6 bolt has the highest stiffness ratio of the joint members and the bolt, and the bolted joint with the M12 bolt has the lowest stiffness ratio. When a bolted joint is loaded with a variable working load, then the dynamic safety factor (DSF) is used for evaluating the joint load capacity. The DSF increases with a decrease in the stiffness of the bolted joint, ie by increasing the relative clamped length of the bolted joint. For the same conditions analyzed, the bolted joint with M6 bolt has the largest DSF, and the bolted joint with M12 bolt has the smallest DSF. The obtained result can be used by engineers to evaluate the load-carrying capacity of dynamically tension-loaded bolted joints.",
journal = "Engineering Today",
title = "Stiffness as a criterion of dynamic load carrying capacity of tension-loaded bolted joints",
pages = "49-39",
number = "1",
volume = "2",
doi = "10.5937/engtoday2300004L"
}

Ljubojević, P.,& Lazović, T.. (2023). Stiffness as a criterion of dynamic load carrying capacity of tension-loaded bolted joints. in Engineering Today, 2(1), 39-49.
https://doi.org/10.5937/engtoday2300004L

Ljubojević P, Lazović T. Stiffness as a criterion of dynamic load carrying capacity of tension-loaded bolted joints. in Engineering Today. 2023;2(1):39-49.
doi:10.5937/engtoday2300004L .

Ljubojević, Pavle, Lazović, Tatjana, "Stiffness as a criterion of dynamic load carrying capacity of tension-loaded bolted joints" in Engineering Today, 2, no. 1 (2023):39-49,
https://doi.org/10.5937/engtoday2300004L . .

TY  - CONF
AU  - Trišović, Zaga
AU  - Lazović, Tatjana
AU  - Trišović, Nataša
AU  - Ljubojević, Pavle
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6869
AB  - The modern era of composite materials begins at the end of the 19th century with the production of the first polymer–based artificial resins. Since then, the types and technologies of composite materials have been continuously developed and improved, until today. Their use in modern industry is progressively growing. That is why orderliness and regularity are necessary for the development, production, meeting of market requirements, exploitation and recycling of these materials. It can only be achieved through standards and standardization. Within the technical
committee TC 61 of the International Organization for Standardization – ISO, the subcommittee ISO/TC 61/SC 13, which deals with composites and reinforcing fibres, operates. The American Society for Testing and Materials – ASTM International also publishes international standards. The D30 committee for composite materials operates within this organization. ISO/TC 61/SC 13 has existed since 1985, and ASTM/D30 since 1964. In this paper, an analysis of the number, types and dynamics of the publication of standards in the field of composites and related fields was carried
out. Based on the analysis carried out, it was concluded that a large number of significant standards have been published, that the number of standards is increasing following the development of new composite materials, as well as that further expansion of the concept of standardization in the field of composites can be expected. The results shown here are the result of research supported by COST action CA21155 – Advanced Composites under HIgh STRAin RaTEs Loading: a route to certification–by–analysis (HISTRATE).
PB  - University Politehnica Timișoara
C3  - International Conference on Applied Sciences - ICAS 2023, Short Abstracts
T1  - Standardization in the field of composites
EP  - 44
SP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6869
ER  - 

@conference{
author = "Trišović, Zaga and Lazović, Tatjana and Trišović, Nataša and Ljubojević, Pavle",
year = "2023",
abstract = "The modern era of composite materials begins at the end of the 19th century with the production of the first polymer–based artificial resins. Since then, the types and technologies of composite materials have been continuously developed and improved, until today. Their use in modern industry is progressively growing. That is why orderliness and regularity are necessary for the development, production, meeting of market requirements, exploitation and recycling of these materials. It can only be achieved through standards and standardization. Within the technical
committee TC 61 of the International Organization for Standardization – ISO, the subcommittee ISO/TC 61/SC 13, which deals with composites and reinforcing fibres, operates. The American Society for Testing and Materials – ASTM International also publishes international standards. The D30 committee for composite materials operates within this organization. ISO/TC 61/SC 13 has existed since 1985, and ASTM/D30 since 1964. In this paper, an analysis of the number, types and dynamics of the publication of standards in the field of composites and related fields was carried
out. Based on the analysis carried out, it was concluded that a large number of significant standards have been published, that the number of standards is increasing following the development of new composite materials, as well as that further expansion of the concept of standardization in the field of composites can be expected. The results shown here are the result of research supported by COST action CA21155 – Advanced Composites under HIgh STRAin RaTEs Loading: a route to certification–by–analysis (HISTRATE).",
publisher = "University Politehnica Timișoara",
journal = "International Conference on Applied Sciences - ICAS 2023, Short Abstracts",
title = "Standardization in the field of composites",
pages = "44-44",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6869"
}

Trišović, Z., Lazović, T., Trišović, N.,& Ljubojević, P.. (2023). Standardization in the field of composites. in International Conference on Applied Sciences - ICAS 2023, Short Abstracts
University Politehnica Timișoara., 44-44.
https://hdl.handle.net/21.15107/rcub_machinery_6869

Trišović Z, Lazović T, Trišović N, Ljubojević P. Standardization in the field of composites. in International Conference on Applied Sciences - ICAS 2023, Short Abstracts. 2023;:44-44.
https://hdl.handle.net/21.15107/rcub_machinery_6869 .

Trišović, Zaga, Lazović, Tatjana, Trišović, Nataša, Ljubojević, Pavle, "Standardization in the field of composites" in International Conference on Applied Sciences - ICAS 2023, Short Abstracts (2023):44-44,
https://hdl.handle.net/21.15107/rcub_machinery_6869 .

TY  - CONF
AU  - Ljubojević, Pavle
AU  - Lazović, Tatjana
AU  - Ćirić-Kostić, Snežana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6914
AB  - This paper explores the significance of standardization in the field of additive manufacturing (AM). The rapid
growth of AM in modern industries has highlighted the need for standardization to ensure compatibility, quality control,
and market opportunities for AM products. The paper emphasizes the flexibility of AM technologies in meeting industrial
and ecological requirements, revolutionizing business models, and satisfying customer needs. It provides an overview of
the International Organization for Standardization (ISO) and ASTM International (American Society for Testing and
Materials), two major organizations involved in developing and publishing international standards for AM. The paper
discusses the technical committees, working groups, and collaborations established by ISO and ASTM to address various
aspects of AM standardization. Additionally, it highlights the ongoing efforts in Serbian national standardization and
proposes future research on analyzing the scopes and contents of AM standards for improved usability. Overall, the paper
emphasizes the crucial role of standardization in supporting the continued advancement of additive manufacturing.
PB  - Kraljevo : University of Kragujevac Faculty of mechanical and civil engineering
C3  - Proceedings of XI TRIENNIAL INTERNATIONAL CONFERENCE HEAVY MACHINERY HM 2023 VRNJAČKA BANJA, SERBIA
T1  - Additive manufacturing - a view through the prism of standardization
EP  - C.6
SP  - C.1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6914
ER  - 

@conference{
author = "Ljubojević, Pavle and Lazović, Tatjana and Ćirić-Kostić, Snežana",
year = "2023",
abstract = "This paper explores the significance of standardization in the field of additive manufacturing (AM). The rapid
growth of AM in modern industries has highlighted the need for standardization to ensure compatibility, quality control,
and market opportunities for AM products. The paper emphasizes the flexibility of AM technologies in meeting industrial
and ecological requirements, revolutionizing business models, and satisfying customer needs. It provides an overview of
the International Organization for Standardization (ISO) and ASTM International (American Society for Testing and
Materials), two major organizations involved in developing and publishing international standards for AM. The paper
discusses the technical committees, working groups, and collaborations established by ISO and ASTM to address various
aspects of AM standardization. Additionally, it highlights the ongoing efforts in Serbian national standardization and
proposes future research on analyzing the scopes and contents of AM standards for improved usability. Overall, the paper
emphasizes the crucial role of standardization in supporting the continued advancement of additive manufacturing.",
publisher = "Kraljevo : University of Kragujevac Faculty of mechanical and civil engineering",
journal = "Proceedings of XI TRIENNIAL INTERNATIONAL CONFERENCE HEAVY MACHINERY HM 2023 VRNJAČKA BANJA, SERBIA",
title = "Additive manufacturing - a view through the prism of standardization",
pages = "C.6-C.1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6914"
}

Ljubojević, P., Lazović, T.,& Ćirić-Kostić, S.. (2023). Additive manufacturing - a view through the prism of standardization. in Proceedings of XI TRIENNIAL INTERNATIONAL CONFERENCE HEAVY MACHINERY HM 2023 VRNJAČKA BANJA, SERBIA
Kraljevo : University of Kragujevac Faculty of mechanical and civil engineering., C.1-C.6.
https://hdl.handle.net/21.15107/rcub_machinery_6914

Ljubojević P, Lazović T, Ćirić-Kostić S. Additive manufacturing - a view through the prism of standardization. in Proceedings of XI TRIENNIAL INTERNATIONAL CONFERENCE HEAVY MACHINERY HM 2023 VRNJAČKA BANJA, SERBIA. 2023;:C.1-C.6.
https://hdl.handle.net/21.15107/rcub_machinery_6914 .

Ljubojević, Pavle, Lazović, Tatjana, Ćirić-Kostić, Snežana, "Additive manufacturing - a view through the prism of standardization" in Proceedings of XI TRIENNIAL INTERNATIONAL CONFERENCE HEAVY MACHINERY HM 2023 VRNJAČKA BANJA, SERBIA (2023):C.1-C.6,
https://hdl.handle.net/21.15107/rcub_machinery_6914 .

TY  - CONF
AU  - Simonović, Ivan
AU  - Marinković, Aleksandar
AU  - Gachot, Carsten
AU  - Ljubojević, Pavle
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6862
AB  - Due to a growing energy problems in the last decades, different ideas and methods for saving
energy and efficiency improvement become more and more requested. Taking into account that almost half of the energy losses in machines and mechanisms occur in frictional processes thus the importance of improving tribology performances in different machine elements is rather clear.
Machine elements such as gears, rolling and sliding bearings in various applications are usually operating with different lubricants in order to reduce friction and wear of their contacting surfaces. Besides surfaces in contact cannot be conventionally lubricated due to legal and environmental restrictions or physical limitations, in applications in food, textile, paper or medical industry as well as limitations due to ultra-clean conditions, extreme temperatures, radiation or vacuum, solid lubricants gain more and more attention due to the possibility to maintain essential lubrication properties. MXenes are a novel class of new two-dimensional materials, derived from well established MAX phases such as Ti3AlC2, which have the ability for a wide use in fields and applications due to their unique structure and properties. The distinct structure, low shear resistance, and easy-to-modify ability endow MXenes with particularly superior lubrication potentials. Authors of the paper present an overview synthesis and variety of MXenes, their mechanical and frictional properties dealing with ideas for possible applications in several machine elements aimed to reduce friction, wear rate and improve their performances making longer working life.
C3  - 18th International Conference on Tribology - SERBIATRIB ‘23, Kragujevac, Serbia, 17 19 May 2023
T1  - APPLICATION OF MXENE NANOSHEETS FOR IMPROVING MACHINE  ELEMENTS PROPERTIES
EP  - 491
SP  - 485
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6862
ER  - 

@conference{
author = "Simonović, Ivan and Marinković, Aleksandar and Gachot, Carsten and Ljubojević, Pavle",
year = "2023",
abstract = "Due to a growing energy problems in the last decades, different ideas and methods for saving
energy and efficiency improvement become more and more requested. Taking into account that almost half of the energy losses in machines and mechanisms occur in frictional processes thus the importance of improving tribology performances in different machine elements is rather clear.
Machine elements such as gears, rolling and sliding bearings in various applications are usually operating with different lubricants in order to reduce friction and wear of their contacting surfaces. Besides surfaces in contact cannot be conventionally lubricated due to legal and environmental restrictions or physical limitations, in applications in food, textile, paper or medical industry as well as limitations due to ultra-clean conditions, extreme temperatures, radiation or vacuum, solid lubricants gain more and more attention due to the possibility to maintain essential lubrication properties. MXenes are a novel class of new two-dimensional materials, derived from well established MAX phases such as Ti3AlC2, which have the ability for a wide use in fields and applications due to their unique structure and properties. The distinct structure, low shear resistance, and easy-to-modify ability endow MXenes with particularly superior lubrication potentials. Authors of the paper present an overview synthesis and variety of MXenes, their mechanical and frictional properties dealing with ideas for possible applications in several machine elements aimed to reduce friction, wear rate and improve their performances making longer working life.",
journal = "18th International Conference on Tribology - SERBIATRIB ‘23, Kragujevac, Serbia, 17 19 May 2023",
title = "APPLICATION OF MXENE NANOSHEETS FOR IMPROVING MACHINE  ELEMENTS PROPERTIES",
pages = "491-485",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6862"
}

Simonović, I., Marinković, A., Gachot, C.,& Ljubojević, P.. (2023). APPLICATION OF MXENE NANOSHEETS FOR IMPROVING MACHINE  ELEMENTS PROPERTIES. in 18th International Conference on Tribology - SERBIATRIB ‘23, Kragujevac, Serbia, 17 19 May 2023, 485-491.
https://hdl.handle.net/21.15107/rcub_machinery_6862

Simonović I, Marinković A, Gachot C, Ljubojević P. APPLICATION OF MXENE NANOSHEETS FOR IMPROVING MACHINE  ELEMENTS PROPERTIES. in 18th International Conference on Tribology - SERBIATRIB ‘23, Kragujevac, Serbia, 17 19 May 2023. 2023;:485-491.
https://hdl.handle.net/21.15107/rcub_machinery_6862 .

Simonović, Ivan, Marinković, Aleksandar, Gachot, Carsten, Ljubojević, Pavle, "APPLICATION OF MXENE NANOSHEETS FOR IMPROVING MACHINE  ELEMENTS PROPERTIES" in 18th International Conference on Tribology - SERBIATRIB ‘23, Kragujevac, Serbia, 17 19 May 2023 (2023):485-491,
https://hdl.handle.net/21.15107/rcub_machinery_6862 .

TY  - CONF
AU  - Ljubojević, Pavle
AU  - Mitrović, Radivoje
AU  - Lazović, Tatjana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6803
AB  - Contact stress and deformations in the thrust ball bearing with a contact angle of 90 ° are 
 onsidered in this paper. Ideally, an external axial load of this kind of bearings should be centric, but in reality, this force may act eccentrically. As a result, the load distribution between balls is inequal. The most unfavourable case is when the axial force intersects the radius vector of one of the balls. The load, contact stress and contact deformation of this ball are greater than the load of all rest of the balls and greater in the case of equal load distribution. It limits the load-carrying capacity of a real bearing, compared to the theoretical static load rating. Analyzes have shown that considered thrust ball bearings do not lose operational ability at low speeds, even if there is some load eccentricity when an external axial load is not more than 30- 40% of static bearing capacity. Otherwise, additional bearing capacity analyzes are required.
C3  - The 10th International Scientific Conference  IRMES 2022  “Machine design in the context of Industry 4.0 – Intelligent products”, 26 May 2022, Belgrade, Serbia
T1  - CONTACT STRESS AND DEFORMATIONS IN ECCENTRICALLY LOADED THRUST BALL BEARING
EP  - 161
SP  - 156
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6803
ER  - 

@conference{
author = "Ljubojević, Pavle and Mitrović, Radivoje and Lazović, Tatjana",
year = "2022",
abstract = "Contact stress and deformations in the thrust ball bearing with a contact angle of 90 ° are 
 onsidered in this paper. Ideally, an external axial load of this kind of bearings should be centric, but in reality, this force may act eccentrically. As a result, the load distribution between balls is inequal. The most unfavourable case is when the axial force intersects the radius vector of one of the balls. The load, contact stress and contact deformation of this ball are greater than the load of all rest of the balls and greater in the case of equal load distribution. It limits the load-carrying capacity of a real bearing, compared to the theoretical static load rating. Analyzes have shown that considered thrust ball bearings do not lose operational ability at low speeds, even if there is some load eccentricity when an external axial load is not more than 30- 40% of static bearing capacity. Otherwise, additional bearing capacity analyzes are required.",
journal = "The 10th International Scientific Conference  IRMES 2022  “Machine design in the context of Industry 4.0 – Intelligent products”, 26 May 2022, Belgrade, Serbia",
title = "CONTACT STRESS AND DEFORMATIONS IN ECCENTRICALLY LOADED THRUST BALL BEARING",
pages = "161-156",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6803"
}

Ljubojević, P., Mitrović, R.,& Lazović, T.. (2022). CONTACT STRESS AND DEFORMATIONS IN ECCENTRICALLY LOADED THRUST BALL BEARING. in The 10th International Scientific Conference  IRMES 2022  “Machine design in the context of Industry 4.0 – Intelligent products”, 26 May 2022, Belgrade, Serbia, 156-161.
https://hdl.handle.net/21.15107/rcub_machinery_6803

Ljubojević P, Mitrović R, Lazović T. CONTACT STRESS AND DEFORMATIONS IN ECCENTRICALLY LOADED THRUST BALL BEARING. in The 10th International Scientific Conference  IRMES 2022  “Machine design in the context of Industry 4.0 – Intelligent products”, 26 May 2022, Belgrade, Serbia. 2022;:156-161.
https://hdl.handle.net/21.15107/rcub_machinery_6803 .

Ljubojević, Pavle, Mitrović, Radivoje, Lazović, Tatjana, "CONTACT STRESS AND DEFORMATIONS IN ECCENTRICALLY LOADED THRUST BALL BEARING" in The 10th International Scientific Conference  IRMES 2022  “Machine design in the context of Industry 4.0 – Intelligent products”, 26 May 2022, Belgrade, Serbia (2022):156-161,
https://hdl.handle.net/21.15107/rcub_machinery_6803 .

TY  - CONF
AU  - Ljubojević, Pavle
AU  - Simonović, Ivan
AU  - Lazović, Tatjana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6493
AB  - The function of shear-loaded bolted joints is the prevention of joint members’ slip. This can be achieved in two ways, depending on the construction, i.e. relative dimensions of bolts and holes in connected parts. There are two types of shear-loaded bolted joints, clamped (friction) and fitted bolted joints. In both cases, a connection between joint members is shear-loaded, but the bolts have different stress and strain states. In clamped bolted joints the actual load is tensile stress, while fitted bolts are loaded with shear and contact pressure. In this paper, a comparative analysis of the load capacity (safety factors) of clamped and fitted bolts, under the same geometrical
and operational conditions was performed. The analysis showed multiple higher load-carrying capacity of fitted bolts that go up to 60 times(!).
PB  - University of East Sarajevo, Faculty of Mechanical Engineering
C3  - COMETa 2022 „Conference on Mechanical Engineering Technologies and Application“
T1  - Comparative analysis of load carrying capacity of shear-loaded bolted joints
EP  - 430
SP  - 424
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6493
ER  - 

@conference{
author = "Ljubojević, Pavle and Simonović, Ivan and Lazović, Tatjana",
year = "2022",
abstract = "The function of shear-loaded bolted joints is the prevention of joint members’ slip. This can be achieved in two ways, depending on the construction, i.e. relative dimensions of bolts and holes in connected parts. There are two types of shear-loaded bolted joints, clamped (friction) and fitted bolted joints. In both cases, a connection between joint members is shear-loaded, but the bolts have different stress and strain states. In clamped bolted joints the actual load is tensile stress, while fitted bolts are loaded with shear and contact pressure. In this paper, a comparative analysis of the load capacity (safety factors) of clamped and fitted bolts, under the same geometrical
and operational conditions was performed. The analysis showed multiple higher load-carrying capacity of fitted bolts that go up to 60 times(!).",
publisher = "University of East Sarajevo, Faculty of Mechanical Engineering",
journal = "COMETa 2022 „Conference on Mechanical Engineering Technologies and Application“",
title = "Comparative analysis of load carrying capacity of shear-loaded bolted joints",
pages = "430-424",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6493"
}

Ljubojević, P., Simonović, I.,& Lazović, T.. (2022). Comparative analysis of load carrying capacity of shear-loaded bolted joints. in COMETa 2022 „Conference on Mechanical Engineering Technologies and Application“
University of East Sarajevo, Faculty of Mechanical Engineering., 424-430.
https://hdl.handle.net/21.15107/rcub_machinery_6493

Ljubojević P, Simonović I, Lazović T. Comparative analysis of load carrying capacity of shear-loaded bolted joints. in COMETa 2022 „Conference on Mechanical Engineering Technologies and Application“. 2022;:424-430.
https://hdl.handle.net/21.15107/rcub_machinery_6493 .

Ljubojević, Pavle, Simonović, Ivan, Lazović, Tatjana, "Comparative analysis of load carrying capacity of shear-loaded bolted joints" in COMETa 2022 „Conference on Mechanical Engineering Technologies and Application“ (2022):424-430,
https://hdl.handle.net/21.15107/rcub_machinery_6493 .

TY  - CONF
AU  - Simonović, Ivan
AU  - Ljubojević, Pavle
AU  - Vasilijević, Tamara
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6502
AB  - This paper presents a study of machine elements and design standardization. The primary
objective of the standards is to eliminate discrepancies between subjects and concepts that
serve the same function. This paper aims to catalogue the ISO technical committees that operate in these fields. There are 12 technical committees, with 256 published standards, 68 under development, 587 withdrawn projects, and 7 projects that have been deleted as of the publication of this report. In addition to the committee's review, the most essential and
widely used standards for general-purpose machine elements, including screw threads, rolling bearings, plain bearings, and gears, are provided.
PB  - University of Belgrade, Faculty of Mechanical Engineering
C3  - 8th International Conference on Industrial Engineering SIE 2022
T1  - Standardization in the field of machine elements and design
EP  - 170
SP  - 167
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6502
ER  - 

@conference{
author = "Simonović, Ivan and Ljubojević, Pavle and Vasilijević, Tamara",
year = "2022",
abstract = "This paper presents a study of machine elements and design standardization. The primary
objective of the standards is to eliminate discrepancies between subjects and concepts that
serve the same function. This paper aims to catalogue the ISO technical committees that operate in these fields. There are 12 technical committees, with 256 published standards, 68 under development, 587 withdrawn projects, and 7 projects that have been deleted as of the publication of this report. In addition to the committee's review, the most essential and
widely used standards for general-purpose machine elements, including screw threads, rolling bearings, plain bearings, and gears, are provided.",
publisher = "University of Belgrade, Faculty of Mechanical Engineering",
journal = "8th International Conference on Industrial Engineering SIE 2022",
title = "Standardization in the field of machine elements and design",
pages = "170-167",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6502"
}

Simonović, I., Ljubojević, P.,& Vasilijević, T.. (2022). Standardization in the field of machine elements and design. in 8th International Conference on Industrial Engineering SIE 2022
University of Belgrade, Faculty of Mechanical Engineering., 167-170.
https://hdl.handle.net/21.15107/rcub_machinery_6502

Simonović I, Ljubojević P, Vasilijević T. Standardization in the field of machine elements and design. in 8th International Conference on Industrial Engineering SIE 2022. 2022;:167-170.
https://hdl.handle.net/21.15107/rcub_machinery_6502 .

Simonović, Ivan, Ljubojević, Pavle, Vasilijević, Tamara, "Standardization in the field of machine elements and design" in 8th International Conference on Industrial Engineering SIE 2022 (2022):167-170,
https://hdl.handle.net/21.15107/rcub_machinery_6502 .