Temat: Additive Manufacturing - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A bioinspired optimization strategy: to minimize the travel segment of the nozzle to accelerate the fused deposition modeling process
Autorzy:: Sridhar, Sundarraj
Aditya, K.
Venkatraman, Ramamoorthi
Venkatesan, M.
Powiązania:: https://bibliotekanauki.pl/articles/27311459.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: additive manufacturing
fused deposition modeling
extruder path
ant colony optimization
build time
produkcja dodatkowa
modelowanie osadzania stopionego
ścieżka wytłaczarki
optymalizacja kolonii mrówek
czas budowy
Opis:: The fused deposition modeling process of digital printing uses a layer-by-layer approach to form a three-dimensional structure. Digital printing takes more time to fabricate a 3D model, and the speed varies depending on the type of 3D printer, material, geometric complexity, and process parameters. A shorter path for the extruder can speed up the printing process. However, the time taken for the extruder during printing (deposition) cannot be reduced, but the time taken for the extruder travel (idle move) can be reduced. In this study, the idle travel of the nozzle is optimized using a bioinspired technique called "ant colony optimization" (ACO) by reducing the travel transitions. The ACO algorithm determines the shortest path of the nozzle to reduce travel and generates the tool paths as G-codes. The proposed method’s G-code is implemented and compared with the G-code generated by the commercial slicer, Cura, in terms of build time. Experiments corroborate this finding: the G-code generated by the ACO algorithm accelerates the FDM process by reducing the travel movements of the nozzle, hence reducing the part build time (printing time) and increasing the strength of the printed object.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 4; art. no. e146236
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A Concept to Carry Out a Torsion Test on Components Made of 20CrNiMo2-2 Steel Using Additive Techniques
Koncepcja przeprowadzenia próby skręcania elementów ze stali 20CrNiMo2-2 wytworzonych z zastosowaniem technik przyrostowych
Autorzy:: Grzelak, Krzysztof
Kluczyński, Janusz
Sarzyński, Bartłomiej
Powiązania:: https://bibliotekanauki.pl/articles/2073841.pdf
Data publikacji:: 2022
Wydawca:: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:: additive manufacturing technologies
3D printing
static tensile test
static torsion test
technika wytwarzania przyrostowego
druk 3D
statyczna próba rozciągania
statyczna próba skręcania
Opis:: In recent years, additive manufacturing (AM) technologies, have been one of the fastest developing methods of production of various components. As far as building material is concerned, they allow for using not only polymers, but also composites or metals. Products fabricated using said technologies are used in various areas of industries, for instance in medicine, architecture, entertainment, and in particular in the construction of parts and components of machinery and equipment. To recognize and determine the products’ strength properties in a more comprehensive manner, 3D printing products used in mechanical applications are subject to various tests, e.g. static tensile test. This paper contains research about static torsion test on cylindrical samples made of high grade 20CrNiMo2-2 steel using the selective laser melting (SLM). Such an approach allowed to observe the material behaviour and to determine specific values of strength properties, such as the maximum tangential stresses in the material and bulk modulus of elasticity (shear modulus). The determination of such parameters allowed to compare them with the results of the tests carried out on components manufactured using other methods (e.g. a cold drawn solid bar sample).
W ostatnich latach przyrostowe techniki wytwarzania, a w szczególności druk 3D, są jednymi z najszybciej rozwijających się metod produkcji różnych elementów. Pozwalają one na wykorzystanie jako materiału budulcowego nie tylko polimerów, ale również kompozytów czy metali. Produkty powstałe z zastosowaniem opisywanych technik znajdują zastosowanie w różnych dziedzinach życia, dla przykładu w medycynie, architekturze, rozrywce a w szczególności w budowie części i elementów maszyn i urządzeń. Aby lepiej poznać i określić właściwości wytrzymałościowe wyrobów, kluczowe w przypadku wykorzystania produktów druku 3D w dziedzinie mechanicznej, poddaje się je wielu badaniom np. statycznej próbie rozciągania. Rozważanym pomysłem jest przeprowadzenie statycznej próby skręcania walcowych próbek wytworzonych z wysoko-gatunkowej stali 20CrNiMo2-2 z zastosowaniem techniki selektywnego spiekania proszku metalu (SLM). Pozwoli ono na obserwację zachowania się materiału oraz wyznaczenie konkretnych wartości właściwości wytrzymałościowych, takich jak maksymalne naprężenia styczne występujące w materiale oraz moduł sprężystości poprzecznej (modułu Kirchoffa). Dzięki ich znajomości możliwym będzie porównanie ich z wynikami badań przeprowadzanych nad elementami wytwarzanymi w inny sposób (np. próbka z litego pręta ciągnionego).
Źródło:: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2022, 13, 2 (48); 97--105
2081-5891
Pojawia się w:: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A generic method to realize long fibers filled and large polymer parts in additive manufacturing
Autorzy:: Hascoët, Jean-Yves
Authelin, Olivier
Rauch, Matthieu
Powiązania:: https://bibliotekanauki.pl/articles/99691.pdf
Data publikacji:: 2020
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: robotized additive manufacturing
long fiber
filled polymers
fused filament fabrication
Opis:: A general manufacturing methodology for long fibers filled and large polymer (LFFLP) parts will be proposed, which constitutes the major scientific contribution of the document. The input, output, control and analysis data at each step of the methodology will be specified. Experiments realized in the laboratory of Ecole Centrale de Nantes will demonstrate the relevance and effectiveness of this method applied to a 6-axis robot and the FFF process by showcasing two light and resistant lattice structures. The latter also highlight the capacity of 6-axis robots for orienting the deposition head in order to generate complex trajectories. Finally, perspectives and future research about this subject will be discussed such as the need to develop in-depth analyses of the manufacturing methodology. The possibility of using continuous fibres composites as material feedstock for robotized large dimensions FFF will also be covered.
Źródło:: Journal of Machine Engineering; 2020, 20, 1; 107-116
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A micromechanical approach to numerical modeling of yielding of open-cell porous structures under compressive loads
Autorzy:: Hedayati, R.
Sadighi, M.
Powiązania:: https://bibliotekanauki.pl/articles/949311.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: rhombic dodecahedron
additive manufacturing
micro-structure
porous biomaterials
implant
finite element
Opis:: Today, interconnected open-cell porous structures made of titanium and its alloys are replacing the prevalent solid metals used in bone substitute implants. The advent of additive manufacturing techniques has enabled manufacturing of open-cell structures with arbitrary micro-structural geometry. In this paper, rhombic dodecahedron structures manufactured using SLM technique and tested by Amin Yavari et al. (2014) are investigated numerically using ANSYS and LS-DYNA finite element codes for the modeling of the elastic and postyielding behavior of the lattice structure, respectively. Implementing a micro-mechanical approach to the numerical modeling of the yielding behavior of open-cell porous materials is the main contribution of this work.One of the advantages of micro-mechanical modeling of an open-cell structure is that, in contrast to the macro-mechanical finite element modeling, it is not necessary to obtain several material constants for different foam material models through heavy experimental tests. The results of the study showed that considering the irregularity in defining the cross-sections of the struts decreases both the yielding stress and densification strain of the numerical structure to the values obtained from the experimental tests. Moreover, the stress-strain curve of the irregular structure was much smoother in two points of yielding and densification, which is also observable in experimental plots. Considering the irregularity in the structure also decreased the elastic modulus of the lattice structure by about 20-30%. The post-densification modulus was more influenced by irregularity as it was decreased by more than 50%. In summary, it was demonstrated that using beam elements with variable cross-sections for constructing open-cell biomaterials could result in numerical results sufficiently close to the experimental data.
Źródło:: Journal of Theoretical and Applied Mechanics; 2016, 54, 3; 769-781
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: A novel method for additive manufacturing of complex shape curved parts by using variable height layers
Autorzy:: Rauch, Matthieu
Dorado, Jorge Piedra
Hascoet, Jean-Yves
Ruckert, Guillaume
Powiązania:: https://bibliotekanauki.pl/articles/1833771.pdf
Data publikacji:: 2021
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: WAAM
additive manufacturing
variable height layer
curved part
Opis:: The Wire Arc Additive Manufacturing process (WAAM) is designed for the manufacture of large metallic parts with no joints, very little waste material and hardly any support. It is gaining its space inside the naval, aeronautics and space industries. However, there are key challenges to be solved in order to increase the performance of the WAAM process. Parts with curved shapes are difficult to manufacture with regular parallel layers without support because of an excessive overhang in certain regions. This paper proposes a methodology that solves this issue, by using incrementally angled layers with variable bead height, which eliminates or decreases the overhang between layers. This solution uses an angled rotary positioner (or other method for moving the part in a controlled way) and controls key parameters like the travel speed, the deposition angle, the available bead height difference, etc. The efficiency of the developed proposal is shown with the manufacture of a large curved steel (316L) piece as a use-case.
Źródło:: Journal of Machine Engineering; 2021, 21, 3; 80--91
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: A novel microbial fuel cell with exchangable membrane - application of additive manufacturing technology for device fabrication
Autorzy:: Zawadzki, D.
Pędziwiatr, P.
Michalska, K.
Powiązania:: https://bibliotekanauki.pl/articles/105862.pdf
Data publikacji:: 2018
Wydawca:: Centrum Badań i Innowacji Pro-Akademia
Tematy:: microbial fuel cell
microorganisms
exchangeable membrane
bioelectricity
additive manufacturing
mikrobiologiczne ogniwo paliwowe
mikroorganizmy
wymienna membrana
bioelektryczność
addytywne wytwarzanie
Opis:: Research about exploitation the potential of waste and sludge increased drastically in the recent years. One of the most promising alternative methods of waste management is Microbial Fuel Cell (MFC), which generate clean bio-electricity using microorganisms. Organic compounds, sewage, municipal solid waste could be used as a source for microbial nutrition. The construction of MFC is one of the most important parameter in laboratory studies and during scale-up. The efficiency of MFC depends on many factors including type of membrane. To obtain optimization in terms of various operating conditions, a prototype of Microbial Fuel Cell with exchangeable membrane was projected and fabricated by additive manufacturing (AM) technology. This novel device allows to research effects of different types of separator membranes. Preliminary research showed possibility to produce 3D printed MFC systems.
Źródło:: Acta Innovations; 2018, 28; 20-31
2300-5599
Pojawia się w:: Acta Innovations
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: A novel slicing strategy for continuous printing with a helix 3D printer
Autorzy:: Neel, Tugdual Le
Mesto, Tarek
Hascoet, Jean-Yves
Powiązania:: https://bibliotekanauki.pl/articles/2142355.pdf
Data publikacji:: 2022
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: additive manufacturing
slicing
Helix 3D printer
Opis:: Additive manufacturing is an essential solution in the production of parts. Model slicing is an important step of the 3D printing process. The slicing of the layers is the core part of the additive manufacturing because it transforms the 3D model to a 2D profile layer for the printer to manufacture. A novel machine architecture deposits with a helical path. The helical architecture provides a continuous rotation that allows printing continuously without any interruption. Therefore there are no more starting and ending point at each layer. This paper proposes a slicing method compatible with this type of machine. Continuous printing is made as a function of z-level, so at each angle of rotation, the level of z will be incremented. Finally, these disks can be combined as one image to be sent to the ink-jet as a continuous printing. To illustrate this novel slicing methodology a model is sliced.
Źródło:: Journal of Machine Engineering; 2022, 22, 3; 31--43
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: A study on the influence of printing orientation in metal printing using material extrusion technology on the mechanical properties of 17-4 stainless steel products
Autorzy:: Dang, Long Cao
Nguyen, Cuong Van
Le, Anh Hoang
Bui, Danh Thanh
Powiązania:: https://bibliotekanauki.pl/articles/28407327.pdf
Data publikacji:: 2023
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: additive manufacturing
material extrusion
17-4 PH stainless steel
mechanical properties
Opis:: This study investigated the influence of print orientation on the mechanical properties of 17-4 PH stainless steel parts fabricated using material extrusion technology. Tensile test specimens were 3D printed in different orientations (flat, on-edge, and upright), and their mechanical properties were evaluated. The results showed that the print orientation significantly affected the ultimate tensile strength, yield strength, and elongation at failure of the specimens. The flat and on-edge orientations exhibited similar mechanical properties, while the upright orientation resulted in lower strength and higher fracture susceptibility. Hardness measurements also indicated variations in hardness distribution among the orientations. The findings emphasize the importance of optimizing the print orientation parameter to achieve desired mechanical characteristics in 17-4 PH stainless steel parts.
Źródło:: Journal of Machine Engineering; 2023, 23, 4; 89--100
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Adaptive GFRP rotor blades and additive manufacturing of the molding tools
Autorzy:: Ost, Lucas
Seidlitz, Holger
Kuke, Felix
Yellur, Manoja Rao
Krenz, Jonas
Ulke-Winter, Lars
Powiązania:: https://bibliotekanauki.pl/articles/36847551.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Zarządzania Produkcją
Tematy:: additive manufacturing
fiber-reinforced plastics
lightweight design
adaptive
rotor blade
tworzywo sztuczne wzmocnione włóknem
lekka konstrukcja
adaptacja
łopata wirnika
wytwarzanie przyrostowe
Opis:: Small wind turbines are mostly designed for strong and medium wind regions, which are scaled by manufacturers based on similarity rules. However, the inland region represents a low wind region where the commercially available blades are not profitable. In this work, a rotor blade was designed for these wind conditions and further performance improvement of the turbine was generated by self-adaptive adjustment of the blades to the variable wind loads. This adaptation is achieved by a ply structure that exhibits bending-torsion coupling. The tooling for the production of the GFRP rotor blades was manufactured using a large-format 3D extrusion printer.
Źródło:: Zarządzanie Przedsiębiorstwem; 2021, 24, 1-2; 15-18
1643-4773
Pojawia się w:: Zarządzanie Przedsiębiorstwem
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics
Autorzy:: Dobrzański, L. A.
Dobrzański, L. B.
Dobrzańska-Danikiewicz, A. D.
Powiązania:: https://bibliotekanauki.pl/articles/1818519.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: powder engineering
manufacturing of powder products
hybrid technologies using powders
additive manufacturing technologies using powders
dendrological matrix of the technologies potential and attractiveness
holistic augmented Industry 4.0 model
inżynieria proszkowa
produkcja wyrobów proszkowych
technologie hybrydowe z wykorzystaniem proszków
technologie wytwarzania przyrostowego z wykorzystaniem proszków
Opis:: Purpose: The paper is a comprehensive review of the literature on additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics. Design/methodology/approach: Extensive literature studies on conventional powder engineering technologies have been carried out. By using knowledge engineering methods, development perspectives of individual technologies were indicated. Findings: The additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics as the advanced digital production (ADP) technologies are located in the two-quarters of the dendrological matrix of technologies "wide-stretching oak" and "rooted dwarf mountain pine" respectively. It proves their highest possible potential and attractiveness, as well as their fully exploited attractiveness or substantial development opportunities in this respect. Originality/value: According to augmented holistic Industry 4.0 model, many materials processing technologies and among them additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics are becoming very important among product manufacturing technologies. They are an essential part not only of powder engineering but also of the manufacturing development according to the concept of Industry 4.0.
Źródło:: Archives of Materials Science and Engineering; 2020, 102, 2; 59--85
1897-2764
Pojawia się w:: Archives of Materials Science and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Additive manufacturing for health technology applications
Autorzy:: Klimaschewski, Sven F.
Raschke, Robert
Vehse, Mark
Powiązania:: https://bibliotekanauki.pl/articles/95165.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: additive manufacturing
biocompatible hydrogel
stereolithography
selective laser sintering
wytwarzanie przyrostowe
hydrożel
stereolitografia
selektywne spiekanie laserowe
Opis:: In this study we demonstrate an overview about possibilities in using additive manufacturing for tissue engineering and orthopedic prosthesis. We show the possibilities to produce scaffolds by using a low cost commercial stereolithography system under the use of biocompatible hydrogels like Poly(ethylene glycol) diacrylate. We also demonstrate that it is possible to use a low cost selective laser sintering system to produce individual prostheses to support the healing process in many orthopedic issues.
Źródło:: Journal of Mechanical and Energy Engineering; 2019, 3, 3; 215-220
2544-0780
2544-1671
Pojawia się w:: Journal of Mechanical and Energy Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Additive manufacturing in assisting planning of prototyping and closed – die forging
Zastosowanie druku 3D do wspomagania wykonania prototypów i projektowania procesu kucia matrycowego
Autorzy:: Szczepanik, Stefan
Nikiel, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/29520315.pdf
Data publikacji:: 2019
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: prototyping
closed-die forging
FEM simulation
additive manufacturing
polymer printing
prototypowanie
kucie matrycowe
symulacja MES
produkcja dodatkowa
druk polimerowy
Opis:: The steps in the current additive manufacturing processing sequence are: conceptualization and CAD, conversion to STL, transfer and manipulation of STL file on an AM machine, machine setup, prototyping (additive manufacturing) of part, removal from machine and clean up, post-processing of the part. Modifications can be then made to satisfy the criteria of shape, stress and strain state and temperature distribution during processing. An example of this procedure is presented for a cup holder printed in 2 polymers. Modification to this procedure for metal printing is now presented: initially printing a polymer prototype. The methodology of planning the prototyping process and of closed die forging technology by applying 3D printing are described. For a con rod: preform, die and the forging models, based on CAD documentation and STL file, were initially 3D printed from a polymer in processing steps. Optimization was carried out prior to the expensive metal printing. It is shown that to optimize shape of the manufactured part, simulation is a key step of planning prototyping and forging technology.
Prototypowanie i projektowanie kucia matrycowego z zastosowaniem druku 3D składa się z następujących etapów: opracowanie koncepcji i modelu CAD, konwertowanie modeli CAD do formatu STL, definiowanie parametrów druku, drukowanie i obróbka wykańczająca wydruku. Modyfikowanie modeli odbywa się przy założonych kryteriach dotyczących kształtu, stanu naprężenia i odkształcenia oraz rozkładu temperatury. Przedstawiono procedurę wykonania prototypu uchwytu na kubek z dwóch polimerów oraz opracowanie procesu kucia matrycowego odkuwki korbowodu. Zastosowano metodę Riebielskiego do projektowania procesu kucia matrycowego korbowodu z przedkuwki walcowanej. Opracowano dokumentację CAD wyrobu, przedkuwki, odkuwki oraz matryc do kucia. Poprawność opracowanej technologii weryfikowano z zastosowaniem programu Simufact Forming. Po dokonanych korektach przedkuwki uzyskano spełnienie kryteriów i wykonano w technologii druku 3D model matryc, modele przedkuwki i odkuwki korbowodu. Wykazano, że symulacja jest kluczowa do optymalizowania kształtu wyrobów przy opracowaniu prototypów i technologii kucia.
Źródło:: Computer Methods in Materials Science; 2019, 19, 3; 131-137
2720-4081
2720-3948
Pojawia się w:: Computer Methods in Materials Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Additive manufacturing methods, materials and medical applications - the review
Autorzy:: Laskowska, Dorota
Mitura, Katarzyna
Ziółkowska, Ewa
Bałasz, Błażej
Powiązania:: https://bibliotekanauki.pl/articles/1819146.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: additive manufacturing
preoperative planning
tissue engineering
metal implants
wytwarzanie przyrostowe
planowanie przedoperacyjne
inżynieria tkankowa
implanty metalowe
Opis:: The aim of the additive manufacturing (AM) is a production of physical objects by adding material layer-by-layer based on virtual geometry developed in the computer system. The main criteria for the division of additive manufacturing methods are the way to apply the layer and the type of construction material. In most projects, the choice of method is a compromise between costs and properties (e.g. physical, chemical or mechanical) of the manufactured object. Currently, AM methods have found application in many areas of life, including industrial design, automotive, aerospace, architecture, jewellery, medicine and veterinary medicine, bringing many innovative and revolutionary solutions. The purpose of this article is to review of the additive production methods and present the potential of medical application.
Źródło:: Journal of Mechanical and Energy Engineering; 2021, 5, 1; 15--30
2544-0780
2544-1671
Pojawia się w:: Journal of Mechanical and Energy Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Additive manufacturing of polyether ether ketone – PEEK parts with surface roughness modification by a laser beam
Autorzy:: Krolikowski, Marcin
Przestacki, Damian
Chwalczuk, Tadeusz
Sobolewska, Ewa
Tomasik, Malgorzata
Powiązania:: https://bibliotekanauki.pl/articles/100003.pdf
Data publikacji:: 2020
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: additive manufacturing
PEEK
prosthetic implant
laser beam
surface treatment
Opis:: The physicochemical properties of polyether ether ketone (PEEK) allow to use this material for prosthetic restorations applied in implant prosthetics. So far, such attempts have been made in the technology of milling rough material solids of this polymer, but the surface quality was unsatisfactory. Therefore, the production of these materials by additive manufacturing techniques was proposed and an attempt was made to shape their surface using a laser. The possibilities of the method are determined in the paper and preliminary works related to the product surface shaping are presented. The process of making individual prosthetic restorations from the PEEK material by the additive method together with the technology of laser modification of the geometric structure of the material surface for applications in implant prosthetic treatment of patients is innovative and has not been used so far.
Źródło:: Journal of Machine Engineering; 2020, 20, 3; 117-124
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Additive Manufacturing of WC-Co by Indirect Selective Laser Sintering (SLS) using High Bulk Density Powders
Autorzy:: Gădălean, Rares Vasile
Jucan, Ovidiu-Darius
Chicinaş, Horea
Bâlc, Nicolae
Popa, Catalin O.
Powiązania:: https://bibliotekanauki.pl/articles/2106562.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: additive manufacturing
selective laser sintering
cemented carbide
polyamide 12
Opis:: Research in additive manufacturing of tungsten carbide-cobalt has intensified over the last few years due to the increasing need for products designed using topology optimisation and multiscale structures (lattice). These products result in complex shapes and contain inner structures that are challenging to produce through conventional techniques, thus involving high costs. The present work addresses this problem using a two-step approach to 3D print parts with complex shapes and internal structures by employing indirect selective laser sintering (SLS) and tungsten carbide-cobalt sintering. The paper takes further our research in this field [1] to improve the part density by using high bulk density tungsten carbide-cobalt powders. Mechanically mixing tungsten carbide-cobalt with the sacrificial binder, polyamide 12, results in a homogenous powder successfully used by the selective laser sintering process to produce green parts. By further processing, the green parts through a complete sintering cycle, an average final part density of 11.72 g/cm3 representing more than 80% of the theoretical density is achieved.
Źródło:: Archives of Metallurgy and Materials; 2022, 67, 2; 577--585
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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