Kreculj, Dragan

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Authority KeyName Variants
aabdd78d-f700-40d3-8f7b-c9992f0ee743
  • Kreculj, Dragan (3)
  • Kreculj, Dragan D. (2)
Projects

Author's Bibliography

Challenges with Waste Material Obtained by 3D Printing

Mitrović, Aleksandra; Mitrović, Nenad; Kreculj, Dragan; Ratković Kovačević, Nada; Dihovicni, Djordje; Ilić, Ivana

(Conference of Academies for Applied Studies in Serbia (CAASS), 2024)

TY  - CONF
AU  - Mitrović, Aleksandra
AU  - Mitrović, Nenad
AU  - Kreculj, Dragan
AU  - Ratković Kovačević, Nada
AU  - Dihovicni, Djordje
AU  - Ilić, Ivana
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7742
AB  - Today, the waste material obtained by 3D printing operations presents significant challenges due to the increasing global adoption of this technology, leading to serious environmental implications. The generation of plastic waste from unsuccessful prints and end-of-life products is a growing concern, impacting the circular economy. With a 26% annual growth rate in additive manufacturing, the amount of waste is rapidly increasing, necessitating effective waste management strategies. However, 3D printing offers advantages in waste reduction compared to 
traditional manufacturing methods, with only 40% waste generation compared to subtractive technologies and much of the waste being recyclable. The challenges of waste material obtained by 3D printing are numerous and require a comprehensive approach to waste management and recycling. Moreover, leveraging the abundant opportunities for reusing materials and developing sustainable composite filaments, 3D printing can contribute to environmental sustainability and the principles of circular economy.
PB  - Conference of Academies for Applied Studies in Serbia (CAASS)
C3  - International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024
T1  - Challenges with Waste Material Obtained by 3D Printing
EP  - 421
SP  - 417
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7742
ER  - 
@conference{
author = "Mitrović, Aleksandra and Mitrović, Nenad and Kreculj, Dragan and Ratković Kovačević, Nada and Dihovicni, Djordje and Ilić, Ivana",
year = "2024",
abstract = "Today, the waste material obtained by 3D printing operations presents significant challenges due to the increasing global adoption of this technology, leading to serious environmental implications. The generation of plastic waste from unsuccessful prints and end-of-life products is a growing concern, impacting the circular economy. With a 26% annual growth rate in additive manufacturing, the amount of waste is rapidly increasing, necessitating effective waste management strategies. However, 3D printing offers advantages in waste reduction compared to 
traditional manufacturing methods, with only 40% waste generation compared to subtractive technologies and much of the waste being recyclable. The challenges of waste material obtained by 3D printing are numerous and require a comprehensive approach to waste management and recycling. Moreover, leveraging the abundant opportunities for reusing materials and developing sustainable composite filaments, 3D printing can contribute to environmental sustainability and the principles of circular economy.",
publisher = "Conference of Academies for Applied Studies in Serbia (CAASS)",
journal = "International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024",
title = "Challenges with Waste Material Obtained by 3D Printing",
pages = "421-417",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7742"
}
Mitrović, A., Mitrović, N., Kreculj, D., Ratković Kovačević, N., Dihovicni, D.,& Ilić, I.. (2024). Challenges with Waste Material Obtained by 3D Printing. in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024
Conference of Academies for Applied Studies in Serbia (CAASS)., 417-421.
https://hdl.handle.net/21.15107/rcub_machinery_7742
Mitrović A, Mitrović N, Kreculj D, Ratković Kovačević N, Dihovicni D, Ilić I. Challenges with Waste Material Obtained by 3D Printing. in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024. 2024;:417-421.
https://hdl.handle.net/21.15107/rcub_machinery_7742 .
Mitrović, Aleksandra, Mitrović, Nenad, Kreculj, Dragan, Ratković Kovačević, Nada, Dihovicni, Djordje, Ilić, Ivana, "Challenges with Waste Material Obtained by 3D Printing" in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024 (2024):417-421,
https://hdl.handle.net/21.15107/rcub_machinery_7742 .

Merging Eco-Art and Recycling to Advance Environmental Preservation

Mitrović, Aleksandra; Mitrović, Nenad; Kreculj, Dragan; Reljić, Mirjana

(Conference of Academies for Applied Studies in Serbia (CAASS), 2024)

TY  - CONF
AU  - Mitrović, Aleksandra
AU  - Mitrović, Nenad
AU  - Kreculj, Dragan
AU  - Reljić, Mirjana
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7741
AB  - Eco-art and recycling initiatives often involve comprehensive community engagement and participation in specific conditions. This paper explores the synergy between eco-art and recycling processes, as an optimal strategy to advance environmental preservation, alongside the integration of land art with ecological concepts. As environmental concerns escalate, the integration of ecoartistic measures and practices with recycling initiatives emerges as a potential to enhance environmental consciousness and sustainability. The study delves into the interconnectedness of these two disciplines, examining how the creative expression of eco-art can amplify the impact of recycling efforts and activities, leading to heightened environmental awareness and conservation. By detailed examination of the intersections of these creative and ecological disciplines, the research aims to contribute insights into innovative approaches that simultaneously harmonize artistic expression and environmental conservation aspect, with the final important task of protecting our planet and ensuring sustainable development.
PB  - Conference of Academies for Applied Studies in Serbia (CAASS)
C3  - International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024
T1  - Merging Eco-Art and Recycling to Advance Environmental Preservation
EP  - 416
SP  - 412
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7741
ER  - 
@conference{
author = "Mitrović, Aleksandra and Mitrović, Nenad and Kreculj, Dragan and Reljić, Mirjana",
year = "2024",
abstract = "Eco-art and recycling initiatives often involve comprehensive community engagement and participation in specific conditions. This paper explores the synergy between eco-art and recycling processes, as an optimal strategy to advance environmental preservation, alongside the integration of land art with ecological concepts. As environmental concerns escalate, the integration of ecoartistic measures and practices with recycling initiatives emerges as a potential to enhance environmental consciousness and sustainability. The study delves into the interconnectedness of these two disciplines, examining how the creative expression of eco-art can amplify the impact of recycling efforts and activities, leading to heightened environmental awareness and conservation. By detailed examination of the intersections of these creative and ecological disciplines, the research aims to contribute insights into innovative approaches that simultaneously harmonize artistic expression and environmental conservation aspect, with the final important task of protecting our planet and ensuring sustainable development.",
publisher = "Conference of Academies for Applied Studies in Serbia (CAASS)",
journal = "International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024",
title = "Merging Eco-Art and Recycling to Advance Environmental Preservation",
pages = "416-412",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7741"
}
Mitrović, A., Mitrović, N., Kreculj, D.,& Reljić, M.. (2024). Merging Eco-Art and Recycling to Advance Environmental Preservation. in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024
Conference of Academies for Applied Studies in Serbia (CAASS)., 412-416.
https://hdl.handle.net/21.15107/rcub_machinery_7741
Mitrović A, Mitrović N, Kreculj D, Reljić M. Merging Eco-Art and Recycling to Advance Environmental Preservation. in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024. 2024;:412-416.
https://hdl.handle.net/21.15107/rcub_machinery_7741 .
Mitrović, Aleksandra, Mitrović, Nenad, Kreculj, Dragan, Reljić, Mirjana, "Merging Eco-Art and Recycling to Advance Environmental Preservation" in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024 (2024):412-416,
https://hdl.handle.net/21.15107/rcub_machinery_7741 .

Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts

Vorkapić, Miloš; Živojinović, Danijela; Kreculj, Dragan; Ivanov, Toni; Baltić, Marija; Simonović, Aleksandar

(Faculty of Mechanical Engineering, Belgrade, 2023)

TY  - JOUR
AU  - Vorkapić, Miloš
AU  - Živojinović, Danijela
AU  - Kreculj, Dragan
AU  - Ivanov, Toni
AU  - Baltić, Marija
AU  - Simonović, Aleksandar
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5419
AB  - Reverse engineering (RE) aims to design a new replacement part based on the existing part. The goal is to perform a quality reproduction of the physical part with the best possible mechanical characteristics aiming to find optimal solutions regarding the shape and dimensions of the part. The
procedure is implemented through a series of steps: creating a digital 3D model, improving model parameters, and realizing products using additive technologies. In this paper, a review and 
implementation of the fundamental methodologies of RE were carried out on the example of a damaged protective cover with an unknown geometry and material essential for the function of a discontinued device with no technical documentation and spare parts. An optical scanning method, 3D CAD, FEA, and additive manufacturing were used to realize the reproduced part. It was shown that by utilizing RE the lifecycle of the device could be significantly extended with minimal cost.
PB  - Faculty of Mechanical Engineering, Belgrade
T2  - FME Transactions
T1  - Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts
EP  - 38
IS  - 1
SP  - 31
VL  - 51
DO  - 10.5937/fme2301031V
ER  - 
@article{
author = "Vorkapić, Miloš and Živojinović, Danijela and Kreculj, Dragan and Ivanov, Toni and Baltić, Marija and Simonović, Aleksandar",
year = "2023",
abstract = "Reverse engineering (RE) aims to design a new replacement part based on the existing part. The goal is to perform a quality reproduction of the physical part with the best possible mechanical characteristics aiming to find optimal solutions regarding the shape and dimensions of the part. The
procedure is implemented through a series of steps: creating a digital 3D model, improving model parameters, and realizing products using additive technologies. In this paper, a review and 
implementation of the fundamental methodologies of RE were carried out on the example of a damaged protective cover with an unknown geometry and material essential for the function of a discontinued device with no technical documentation and spare parts. An optical scanning method, 3D CAD, FEA, and additive manufacturing were used to realize the reproduced part. It was shown that by utilizing RE the lifecycle of the device could be significantly extended with minimal cost.",
publisher = "Faculty of Mechanical Engineering, Belgrade",
journal = "FME Transactions",
title = "Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts",
pages = "38-31",
number = "1",
volume = "51",
doi = "10.5937/fme2301031V"
}
Vorkapić, M., Živojinović, D., Kreculj, D., Ivanov, T., Baltić, M.,& Simonović, A.. (2023). Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts. in FME Transactions
Faculty of Mechanical Engineering, Belgrade., 51(1), 31-38.
https://doi.org/10.5937/fme2301031V
Vorkapić M, Živojinović D, Kreculj D, Ivanov T, Baltić M, Simonović A. Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts. in FME Transactions. 2023;51(1):31-38.
doi:10.5937/fme2301031V .
Vorkapić, Miloš, Živojinović, Danijela, Kreculj, Dragan, Ivanov, Toni, Baltić, Marija, Simonović, Aleksandar, "Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts" in FME Transactions, 51, no. 1 (2023):31-38,
https://doi.org/10.5937/fme2301031V . .
3

Upotreba 3D štampe u analizi dizajna realizovanog proizvoda - slučaj - kutija malogabaritnog transmitera pritiska

Vorkapić, Miloš; Ivanov, Toni; Baltić, Marija; Kreculj, Dragan D.; Tanović, Dragoljub Lj.; Kovačević, Aleksandar M.

(Savez inženjera i tehničara Srbije, Beograd, 2020)

TY  - JOUR
AU  - Vorkapić, Miloš
AU  - Ivanov, Toni
AU  - Baltić, Marija
AU  - Kreculj, Dragan D.
AU  - Tanović, Dragoljub Lj.
AU  - Kovačević, Aleksandar M.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3321
AB  - Aditivna proizvodnja uključuje izradu proizvoda složene geometrije u relativno malim količinama, kao i izradu alata i kalupa za masovnu proizvodnju. Aditivnom proizvodnjom realizuju se modeli prema digitalnom prikazu, a primena je ogromna u različitim industrijskim sektorima. U poređenju sa tradicionalnom proizvodnjom, glavni parametri u odabiru aditivne tehnologije su: ušteda energije, smanjenje otpada, smanjenje upotrebe većeg broja alata, kao i optimizacija dizajna. Aditivna proizvodnja ili tehnologija 3D štampe rade na principu dodavanja materijala u slojevima, tj. model se formira od slojeva rastopljenog materijala koji se odmah hladi i očvršćava. 3D štampa omogućava čestu i jednostavnu modifikaciju modela na zahtev kupca, a pre ulaska modela u samu proizvodnju. Ovo čini komunikaciju na relaciji proizvođač-kupac dosta jednostavnom. Polazni materijal za izradu modela je polilaktična kiselina (PLA). To je ekološki termoplastični poliester koji se prirodno razgrađuje u prirodi. Na mehaničke karakteristike realizovanog modela od PLA značajno utiču različite tehnološke promenljive kao što su: prečnik brizgaljke, debljina definisanog sloja, procentualna vrednost ispune, veličina uzorka koji se puni, brzina punjenja i temperatura proizvodnje. Cilj ovog rada je da se prikaže postupak realizacije kutije elektronike za malogabaritni transmiter pritiska na 3D štampaču. Time se projektantu daje mogućnost da ispravi postojeće greške, modifikuje proizvod prema zahtevima krajnjih korisnika i na kraju daje polazna osnova za realizaciju prototipa novog proizvoda.
AB  - Additive manufacturing involves manufacturing of products with complex geometry in relatively small quantities, as well as the tools and molds manufacturing for mass production. With additive manufacturing, digital models are being realized and implementation is huge in various industrial sectors. Compared to traditional manufacturing, the main parameters in the choice of additive technology are: energy savings, waste reduction, reduced use of more tools and optimization of design. Additive manufacturing or 3D printing technology works on the principle of adding material in layers, i.e. the model is formed from layers of molten material that is immediately cooled and solidified. 3D printing allows to work with customers to solve design problems before embarking on a launch production. The starting material for the model is polyactic acid (PLA). It is an eco-friendly thermoplastic polyester, that breaks down naturally. The mechanical characteristics of the realized PLA model are significantly influenced by various technological variables, such as following: nozzle diameter, thickness of defined layer, percentage of fill, sample size to be filled, filling rate and production temperature. The aim of this paper is to present the process of realization of an electronics enclosure for a compact pressure transmitter on a 3D printer. This gives the designer the possibility to correct existing errors, modify the product according to the wishes of the end users and finally provides a starting point for the prototype of new product.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Upotreba 3D štampe u analizi dizajna realizovanog proizvoda - slučaj - kutija malogabaritnog transmitera pritiska
T1  - The usage of 3D printing in the analysis of the product design: Case: Electronic enclosure of compact pressure transmitter
EP  - 186
IS  - 2
SP  - 179
VL  - 75
DO  - 10.5937/tehnika2002179V
ER  - 
@article{
author = "Vorkapić, Miloš and Ivanov, Toni and Baltić, Marija and Kreculj, Dragan D. and Tanović, Dragoljub Lj. and Kovačević, Aleksandar M.",
year = "2020",
abstract = "Aditivna proizvodnja uključuje izradu proizvoda složene geometrije u relativno malim količinama, kao i izradu alata i kalupa za masovnu proizvodnju. Aditivnom proizvodnjom realizuju se modeli prema digitalnom prikazu, a primena je ogromna u različitim industrijskim sektorima. U poređenju sa tradicionalnom proizvodnjom, glavni parametri u odabiru aditivne tehnologije su: ušteda energije, smanjenje otpada, smanjenje upotrebe većeg broja alata, kao i optimizacija dizajna. Aditivna proizvodnja ili tehnologija 3D štampe rade na principu dodavanja materijala u slojevima, tj. model se formira od slojeva rastopljenog materijala koji se odmah hladi i očvršćava. 3D štampa omogućava čestu i jednostavnu modifikaciju modela na zahtev kupca, a pre ulaska modela u samu proizvodnju. Ovo čini komunikaciju na relaciji proizvođač-kupac dosta jednostavnom. Polazni materijal za izradu modela je polilaktična kiselina (PLA). To je ekološki termoplastični poliester koji se prirodno razgrađuje u prirodi. Na mehaničke karakteristike realizovanog modela od PLA značajno utiču različite tehnološke promenljive kao što su: prečnik brizgaljke, debljina definisanog sloja, procentualna vrednost ispune, veličina uzorka koji se puni, brzina punjenja i temperatura proizvodnje. Cilj ovog rada je da se prikaže postupak realizacije kutije elektronike za malogabaritni transmiter pritiska na 3D štampaču. Time se projektantu daje mogućnost da ispravi postojeće greške, modifikuje proizvod prema zahtevima krajnjih korisnika i na kraju daje polazna osnova za realizaciju prototipa novog proizvoda., Additive manufacturing involves manufacturing of products with complex geometry in relatively small quantities, as well as the tools and molds manufacturing for mass production. With additive manufacturing, digital models are being realized and implementation is huge in various industrial sectors. Compared to traditional manufacturing, the main parameters in the choice of additive technology are: energy savings, waste reduction, reduced use of more tools and optimization of design. Additive manufacturing or 3D printing technology works on the principle of adding material in layers, i.e. the model is formed from layers of molten material that is immediately cooled and solidified. 3D printing allows to work with customers to solve design problems before embarking on a launch production. The starting material for the model is polyactic acid (PLA). It is an eco-friendly thermoplastic polyester, that breaks down naturally. The mechanical characteristics of the realized PLA model are significantly influenced by various technological variables, such as following: nozzle diameter, thickness of defined layer, percentage of fill, sample size to be filled, filling rate and production temperature. The aim of this paper is to present the process of realization of an electronics enclosure for a compact pressure transmitter on a 3D printer. This gives the designer the possibility to correct existing errors, modify the product according to the wishes of the end users and finally provides a starting point for the prototype of new product.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Upotreba 3D štampe u analizi dizajna realizovanog proizvoda - slučaj - kutija malogabaritnog transmitera pritiska, The usage of 3D printing in the analysis of the product design: Case: Electronic enclosure of compact pressure transmitter",
pages = "186-179",
number = "2",
volume = "75",
doi = "10.5937/tehnika2002179V"
}
Vorkapić, M., Ivanov, T., Baltić, M., Kreculj, D. D., Tanović, D. Lj.,& Kovačević, A. M.. (2020). Upotreba 3D štampe u analizi dizajna realizovanog proizvoda - slučaj - kutija malogabaritnog transmitera pritiska. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 75(2), 179-186.
https://doi.org/10.5937/tehnika2002179V
Vorkapić M, Ivanov T, Baltić M, Kreculj DD, Tanović DL, Kovačević AM. Upotreba 3D štampe u analizi dizajna realizovanog proizvoda - slučaj - kutija malogabaritnog transmitera pritiska. in Tehnika. 2020;75(2):179-186.
doi:10.5937/tehnika2002179V .
Vorkapić, Miloš, Ivanov, Toni, Baltić, Marija, Kreculj, Dragan D., Tanović, Dragoljub Lj., Kovačević, Aleksandar M., "Upotreba 3D štampe u analizi dizajna realizovanog proizvoda - slučaj - kutija malogabaritnog transmitera pritiska" in Tehnika, 75, no. 2 (2020):179-186,
https://doi.org/10.5937/tehnika2002179V . .

Tensile behaviour of polyethylene under different loading rates in the presence of imperfections

Murariu, Alin; Golubović, Zorana; Sedmak, Aleksandar; Kreculj, Dragan D.

(Institut za ispitivanje materijala, Beograd, 2016)

TY  - JOUR
AU  - Murariu, Alin
AU  - Golubović, Zorana
AU  - Sedmak, Aleksandar
AU  - Kreculj, Dragan D.
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2357
AB  - This paper highlights the changes of polyethylene behaviour during various loading rates. The experimental programme was carried out on samples taken from PE80 polyethylene gas pipes with simulated imperfections with bilateral V-notch, U-notch and central hole. The hybrid technique tensile test - infrared test was used for examining the fracture behaviour of PE80 thermoplastic material samples under different loading rates. Correlation between the loading rate and tensile strength of polyethylene has been established. It has been shown that tensile strength varies with loading rate according to a logarithmic law. Also, it was shown that viscoelastic-plastic character of the polymer material influences directly the specific response of material to loading rates.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Tensile behaviour of polyethylene under different loading rates in the presence of imperfections
EP  - 18
IS  - 1
SP  - 15
VL  - 16
UR  - https://hdl.handle.net/21.15107/rcub_machinery_2357
ER  - 
@article{
author = "Murariu, Alin and Golubović, Zorana and Sedmak, Aleksandar and Kreculj, Dragan D.",
year = "2016",
abstract = "This paper highlights the changes of polyethylene behaviour during various loading rates. The experimental programme was carried out on samples taken from PE80 polyethylene gas pipes with simulated imperfections with bilateral V-notch, U-notch and central hole. The hybrid technique tensile test - infrared test was used for examining the fracture behaviour of PE80 thermoplastic material samples under different loading rates. Correlation between the loading rate and tensile strength of polyethylene has been established. It has been shown that tensile strength varies with loading rate according to a logarithmic law. Also, it was shown that viscoelastic-plastic character of the polymer material influences directly the specific response of material to loading rates.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Tensile behaviour of polyethylene under different loading rates in the presence of imperfections",
pages = "18-15",
number = "1",
volume = "16",
url = "https://hdl.handle.net/21.15107/rcub_machinery_2357"
}
Murariu, A., Golubović, Z., Sedmak, A.,& Kreculj, D. D.. (2016). Tensile behaviour of polyethylene under different loading rates in the presence of imperfections. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 16(1), 15-18.
https://hdl.handle.net/21.15107/rcub_machinery_2357
Murariu A, Golubović Z, Sedmak A, Kreculj DD. Tensile behaviour of polyethylene under different loading rates in the presence of imperfections. in Structural Integrity and Life. 2016;16(1):15-18.
https://hdl.handle.net/21.15107/rcub_machinery_2357 .
Murariu, Alin, Golubović, Zorana, Sedmak, Aleksandar, Kreculj, Dragan D., "Tensile behaviour of polyethylene under different loading rates in the presence of imperfections" in Structural Integrity and Life, 16, no. 1 (2016):15-18,
https://hdl.handle.net/21.15107/rcub_machinery_2357 .
1