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Wyszukujesz frazę "fused deposition modelling" wg kryterium: Temat


Wyświetlanie 1-18 z 18
Tytuł:
Application of additively manufactured polymer composite prototypes in foundry
Autorzy:
Kuczko, W.
Wichniarek, R.
Górski, F.
Buń, P.
Zawadzki, P.
Powiązania:
https://bibliotekanauki.pl/articles/957963.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
additive manufacturing
Fused Deposition Modelling
foundry tooling
Opis:
The paper presents a method, developed by the authors, for manufacturing polymer composites with the matrix manufactured in a layered manner (via 3D printing – Fused Deposition Modeling) out of a thermoplastic material. As an example of practical application of this method, functional prototypes are presented, which were used as elements of foundry tooling – patterns for sand molding. In case of manufacturing prototype castings or short series of products, foundries usually cooperate with modeling studios, which produce patterns by conventional, subtractive manufacturing technologies. If patterns have complex shapes, this results in high manufacturing costs and significantly longer time of tooling preparation. The method proposed by the authors allows manufacturing functional prototypes in a short time thanks to utilizing capabilities of additive manufacturing (3D printing) technology. Thanks to using two types of materials simultaneously (ABS combined with chemically hardened resins), the produced prototypes are capable of carrying increased loads. Moreover, the method developed by the authors is characterized by manufacturing costs lower than in the basic technology of Fused Deposition Modeling. During the presented studies, the pattern was produced as a polymer composite and it was used to prepare a mold and a set of metal castings.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 26; 20-27
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of filling type on strength of parts manufactured by Fused Deposition Modelling
Autorzy:
Górski, F.
Wichniarek, R.
Kuczko, W.
Powiązania:
https://bibliotekanauki.pl/articles/99735.pdf
Data publikacji:
2014
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
rapid prototyping
fused deposition modelling
strength tests
Opis:
Fused Deposition Modelling technology allows to produce elements of very complex shapes without any additional tooling, which is why it has a broad range of industrial applications. Possibility of manufacturing parts with controlled degree of internal filling allows to shorten the manufacturing time and reduce volume of used material. The paper presents influence of layer filling type on part capability of carrying loads and economical coefficients of the manufacturing process. A problem of mechanical properties is important especially in case of elements used as functional prototypes. The paper presents methodology and results of experimental strength tests of samples with various types of internal filling. As a build material for test samples, ABS material was used. Composite samples were also used the ABS matrix produced by Fused Deposition Modelling was filled with chemically hardening polyurethane resin in a process developed by authors. The samples were subjected to destructive testing and their strength properties were compared.
Źródło:
Journal of Machine Engineering; 2014, 14, 3; 113-125
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Determination of Critical Orientation of ABS Parts Manufactured Using Fused Deposition Modelling Technology
Autorzy:
Górski, F.
Wichniarek, R.
Kuczko, W.
Andrzejewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/99414.pdf
Data publikacji:
2015
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
rapid manufacturing
fused deposition modelling
tensile strength
Opis:
The paper presents results of experiments aimed at determination of range of critical orientation for parts manufactured additively using the Fused Deposition Modelling method, out of ABS material. Numerous previous observations of plastic parts manufactured additively using the FDM process allowed concluding, that change of values of the manufacturing orientation (i.e. direction of layer slicing plane) has large influence on the macrostructure of obtained parts, thus affecting their strength and behaviour under load – the material behaves either as a thermoplastic with a yield point or as a brittle material with no yield point. The paper presents methodology and results of experiments aimed at determination of a certain value or value range, at which transition between the two behaviours occurs. The experiments consisted of tensile tests performed on samples manufactured additively in a pre-selected range of orientations. The obtained results – a value range valid for the selected type of load and sample shape – will be useful in future to help select an optimal orientation of part for a defined task.
Źródło:
Journal of Machine Engineering; 2015, 15, 4; 121-132
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of processes occurring in the extrusion head used in additive manufacturing technology
Autorzy:
Prusinowski, A.
Kaczyński, R.
Powiązania:
https://bibliotekanauki.pl/articles/387528.pdf
Data publikacji:
2017
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
additive manufacturing
fused deposition modelling
FEM analysis
RFPC
Opis:
The purpose of this research is unsatisfactory state of knowledge of the abrasive wear of composites with thermoplastic polymer as matrix material and reinforcing material in the form of short and focused carbon fibers that can be used in additive manufacturing technologies. The paper presents a conceptual design of an extrusion head used in Fused Deposition Technology, which allows for the implementation of appropriately stacked fibers at the level of detail production. Finite element simulation was performed to simulate the thermal effect of the system to demonstrate the effect of head cooling on the system. The assumed extrusion temperature of the material was obtained at a uniform nozzle temperature and stable temperature of the entire system. Flow simulation of thermoplastic polymer was carried out in the designed extrusion nozzle. By supplying 0.5 mm wire of 1.75 mm diameter thermoplastic material to the nozzle, the extrusion rate was 0.192 m/s. The proper design of the extrusion head for the intended applications has been demonstrated and the purpose of further research in this field has been confirmed.
Źródło:
Acta Mechanica et Automatica; 2017, 11, 4; 317-321
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of printing velocity on the temperature and viscosity of the polymer thread at the nozzle exit in 3D printers
Wpływ prędkości drukowania na temperaturę i lepkość nici polimerowej na wyjściu z dyszy drukarki 3D
Autorzy:
Baeza-Campuzano, Alberto
Castaño, Victor M.
Powiązania:
https://bibliotekanauki.pl/articles/1789436.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Tematy:
Fused Deposition Modelling
3D printing
additive manufacturing
ANSYS modelling
metoda Fused Deposition Modelling
druk 3D
wytwarzanie addytywne
modelowanie ANSYS
Opis:
Fused Deposition Modelling (FDM) is a powerful method for advanced additive manufacturing of polymeric materials, due to its simplicity and low cost. However, the process implies complex phenomena which are not fully understood yet. In particular, the effect of viscosity on the printed thread is a key parameter to control if good quality products are to be obtained. Experimental data of two grades of acrylonitrile-butadiene- styrene copolymer (ABS) was employed to analyse, by using ANSYS Fluent simulation package, six printing velocities at a temperature of 230°C. A drastic temperature change was observed as the printing velocity increases, confirming the effect of viscosity on the shear created on the wall of the nozzle transversal to the printing bed. The polymers analysed present different viscosity behavior even under the same angular frequency range (0.1 to 100 rad/s), and testing temperature (230°C), which could lead to inhomogeneities. Our results allow taking into account these parameters as part of the design criteria.
Technologia druku 3D – FDM (Fused Deposition Modelling), dzięki prostocie i niskiemu kosztowi, stanowi skuteczną zaawansowaną metodę przyrostowego wytwarzania elementów z materiałów polimerowych. Jednak występujące w tym procesie złożone zjawiska nie są jeszcze w pełni poznane. Kluczowym parametrem determinującym możliwość uzyskania produktów dobrej jakości jest lepkość stopionego polimeru, zależna od prędkości druku. Na podstawie wyników badań dwóch odmian kopolimeru akrylonitryl-butadien-styren (ABS), za pomocą programu symulacyjnego ANSYS Fluent, przeanalizowano zależności dla sześciu prędkości drukowania w temperaturze 230°C. Zaobserwowano istotną zmianę temperatury polimerowej nici wraz ze wzrostem prędkości druku, co potwierdza wpływ lepkości na naprężenia ścinające występujące na ściance dyszy, poprzecznie do stołu drukującego. Analizowane polimery wykazywały różną lepkość, nawet w tym samym zakresie częstotliwości kątowej (0,1 do 100 rad/s) i w takiej samej temperaturze (230°C), co może prowadzić do niejednorodności stopionego tworzywa. Uzyskane wyniki wskazują, że parametry te należy uwzględnić przy projektowaniu procesu druku.
Źródło:
Polimery; 2021, 66, 2; 127--138
0032-2725
Pojawia się w:
Polimery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Solublising Aids on The Entrapment of Loratidine in Pre-Fabricated PVA Filaments Used for FDM Based 3D-Printing
Autorzy:
Mahmood, Faisal
Hussain, Amjad
Arshad, Muhammad Sohail
Abbas, Nasir
Irfan, Muhammad
Qamar, Nadia
Hussain, Fahad
Ghori, Muhammad Usman
Powiązania:
https://bibliotekanauki.pl/articles/895332.pdf
Data publikacji:
2020-02-29
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
3D printing
Plasticizers
Fused deposition modelling (FDM)
PVA filaments
Solubilizers
Opis:
Low drug loading efficiency is the limiting factor in the use of pre-fabricated filaments for 3D printing of pharmaceuticals. The aim of present study was to modify the material properties of pre-fabricated filament by incorporating the suitable solubilizing aids in order to enhance the drug loading efficiency. Loratadine was loaded into PVA filaments by using solubilizers (Soluplus®, Sodium lauryl sulphate) and plasticizers (glycerin and Polyethylene glycol-400) and the printability of filaments was investigated. The treated filaments were characterized for morphology and diameter changes, drug content, FTIR and thermal properties and printed into tablets of suitable dimensions. The printed tablets were also characterized for drug assay and drug release. The results have shown that the surface of different drug loaded filaments become rough with almost no change in diameter hence, these filaments remained printable. However, there was 7 to 24 times enhancement in drug content of filaments treated with particularly those pretreated with glycerin and soaked in drug solution containing Soluplus. The printed tablets have also shown almost similar drug content as their precursor filaments and the release followed diffusion mechanism in most of the formulations. The study concludes that the treatment of PVA filament with solubilizer aids has significantly improved the drug loading entrapment without compromising the printability.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 1; 175-182
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of process parameters on dimensional accuracy of parts manufactured using fused deposition modelling technology
Autorzy:
Górski, F.
Kuczko, W.
Wichniarek, R.
Powiązania:
https://bibliotekanauki.pl/articles/101920.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
rapid prototyping
fused deposition modelling
3D optical scanning
manufacturing accuracy
Opis:
The paper presents the results of experimental study – part of research of additive technology using thermoplastics as a build material, namely Fused Deposition Modelling (FDM). Aim of the study was to identify the relation between basic parameter of the FDM process – model orientation during manufacturing – and a dimensional accuracy and repeatability of obtained products. A set of samples was prepared – they were manufactured with variable process parameters and they were measured using 3D scanner. Significant differences in accuracy of products of the same geometry, but manufactured with different set of process parameters were observed.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 19; 27-35
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of geometric precision of plastic components made by subtractive and additive methods
Autorzy:
Fudali, P.
Witkowski, W.
Wydrzyński, D.
Powiązania:
https://bibliotekanauki.pl/articles/101936.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
rapid prototyping
fused deposition modelling
machining
touch probe measurement
points cloud
Opis:
The paper presents information on manufacturing processes of plastic components. Basic subtractive and additive methods are described. There were also manufactured elements of fan housing by using this two types of methods. Then, the elements were measured using a touch probe. The obtained results were analyzed, on which a comparison of components’ geometric accuracy was performed.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 19; 36-40
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of post-processing on the accuracy of fdm products
Autorzy:
Kuczko, W.
Górski, F.
Wichniarek, R.
Buń, P.
Powiązania:
https://bibliotekanauki.pl/articles/103092.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
additive manufacturing
Fused Deposition Modelling
3d scanning
post-processing
visual prototype
Opis:
This paper presents the assessment of the rapid prototyping finishing techniques for printed components. The aim of the study was to compare the element printed with FDM technology before and after the treatment, using 3D scanning techniques. The object was scanned right after manufacturing, then it was subjected to finishing treatment and 3D-scanned again. The assessment of the results was performed using the GOM Inspect software, based on a comparison between scans and nominal model.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 2; 172-179
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie druku 3D w zastosowaniach automotive
Used of 3D printing in automotive applications
Autorzy:
Caban, J.
Szala, M.
Kęsik, J.
Czuba, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/314376.pdf
Data publikacji:
2017
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
druk 3D
dokładność wymiarowo-kształtowa
SLA
FDM
3D print
fused deposition modelling
Opis:
W artykule scharakteryzowano najczęściej stosowane technologie druku 3D: metoda FFF/FDM, metoda SLA, metoda SLS oraz metoda CJP. Przedstawiono możliwości zastosowania druku 3D w przemyśle motoryzacyjnym oraz projektowaniu nowych elementów i części pojazdów. W części badawczej pracy zaprezentowano wybrane próbki elementów wydrukowanych w technologii druku 3D metodą FDM/FFF przy różnych parametrach druku w zakresie uzyskanej powierzchni i geometrii.
The article presents the most commonly used 3D printing technologies: FFF / FDM method, SLA method, SLS method and CJP method. It presents the possibilities of 3D printing in the automotive industry and the design of new vehicle components and parts. In the research part of the work were presented selected samples of elements printed in FDM / FFF 3D printing technology with different printing parameters in the area of obtained surface and geometry.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 6; 573-579, CD
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Passive safety features of parts produced by rapid prototyping technologies
Svojjstva passivnojj bezopasnosti detalejj, izgotovlennykh tekhnologijami bystrogo prototipovanija
Autorzy:
Falaleev, A.
Nozhenko, O.
Powiązania:
https://bibliotekanauki.pl/articles/792959.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
rapid prototyping
industrial area
manufacturing technology
fused deposition modelling
passive safety
building structure
building material
Opis:
The article presents a new tool for modeling parts produced by rapid prototyping (RP) technologies that has great potential for building structures with programmable properties, especially for items related to the energy dissipation during deformation. Using a wide variety of building materials and controllable part growing is the most important benefit for industry implementation of RP technology. Mass deployment is also hampered by the high price of equipment and materials for the technology.
В статье рассмотрен новый инструмент для моделирования деталей, произведенных с использованием технологий быстрого прототипирования, которые имеют большой потенциал для создания конструкций с программируемыми свойствами, особенно для элементов, связанных с диссипацией энергии при деформации. Возможность использования большого разнообразия материалов и управляемой схемы выращивания деталей является наибольшим преимуществом данной технологии, в то время как массовому внедрению технологий в промышленность препятствует высокая цена на оборудование и материалы.
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 4
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of sterilization of a product manufactured using fdm technology on its dimensional accuracy
Autorzy:
Kuczko, Wiesław
Wichniarek, Radosław
Górski, Filip
Banaszewski, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/102496.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
medical
additive manufacturing
fused deposition modelling
geometric accuracy
medycyna
produkcja dodatkowa
modelowanie osadzania stopionego
dokładność geometryczna
Opis:
Inter-operational surgery supplies manufactured additively using the FDM (Fused Deposition Modelling) technology are required to be sterilized before use. After manufacturing, the part should be sterilized using one of commonly used processes, without losing its dimensions and shape. The paper presents studies on manufacturing and sterilizing samples made out of ABS material and influence of the sterilization process on the dimensional accuracy of these samples.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 1; 74-79
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3D printing technology as a tool in fabrication of elements for wheel model
Autorzy:
Leśniewicz, P.
Powiązania:
https://bibliotekanauki.pl/articles/106023.pdf
Data publikacji:
2017
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
3D printing
fused deposition modelling
wheel
hub
supporting arm
druk 3D
osadzanie topionego materiału
koło
ramię podtrzymujące
Opis:
This paper illustrates an experience related to the use of 3D printing technology during the fabrication of elements for a supporting arm. The arm was a part of a test stand designed for an investigation of rotating wheels in contact with the ground. One of the crucial elements of a supporting arm is the hub, which was originally made from aluminium, however it was decided to replace it by the one made from ABS using 3D printing technology. The author decided to describe difficulties encountered during fabrication of the hub, together with a set of recommendations for future use of 3D printers.
Źródło:
Acta Innovations; 2017, 23; 5-16
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Topology optimization of a 3D part virtually printed by FDM
Autorzy:
Antar, I.
Othmani, M.
Zarbane, K.
El Oumami, M.
Beidouri, Z.
Powiązania:
https://bibliotekanauki.pl/articles/2172164.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
topology optimization
fused deposition modelling
virtually 3D printed part
SIMP
optymalizacja topologii
modelowanie osadzania stopionego
drukowanie 3D
Opis:
Purpose This research work aims to exhibit the possibility to topologically optimize a mesostructured part printed virtually by FDM taking into account the manufacturing parameters. Design/methodology/approach The topology optimization of a 3D part printed by FDM was carried out using the software ABAQUS. On the other hand, a numerical approach using a script based on G-code file has been achieved to create a virtual model. Then, it was optimized according to the Solid Isotropic Material with Penalization (SIMP) method, which minimizing the strain energy was the objective function and the volume fraction of 30% was the constraint. Findings The final topological optimization design of the virtual model is approximately similar to the homogeneous part. Furthermore, the strain energy of the virtual model is less than the homogeneous part. However, the virtually 3D optimized part volume is higher than the homogeneous one. Research limitations/implications In this study, we have limited our study on one layer owing to reduce the simulation time. Moreover, the time required to optimize the virtual model is inordinate. The ensuing study, we will optimize a multiple layer of the mesostructure. Practical implications Our study provides a powerful method to optimize with accurately a mesostructure taken into consideration the manufacturing setting. Originality/value In this paper, we have studied through an original approach the potential of topology optimization of a 3D part virtually printed by FDM. By means of our approach, we were able to optimize topologically the 3D parts printed by FDM taking into account the manufacturing parameters.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2022, 112, 1; 25--32
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rapid Manufacturing of Individualized Prosthetic Sockets
Autorzy:
Górski, Filip
Suszek, Ewa
Wichniarek, Radosław
Kuczko, Wiesław
Żukowska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/101969.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
prosthesis
fused deposition modelling
3D printing
additive manufacturing
customization
protezy
modelowanie osadzania stopionego
druk 3D
wytwarzanie addytywne
personalizacja
Opis:
The paper presents the experimental process of manufacturing individualized prosthetic sockets out of thermoplas‑ tic material, using an additive manufacturing technology of Fused Deposition Modelling. The patient was an adult male with an amputated forearm. His stump was 3D scanned using a low‑cost 3D scanner in a semi‑automated manner. Then, the anthropometric data was used for the creation of a model of a prosthetic socket, which was subsequently manufactured. Three different 3D printers were used, with three different materials (ABS, nylon and PC) and three different sets of process parameters. The paper contains the descriptions of the process, its results and opinions by the patient, leading to the selection of an optimal process course variant.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 1; 42-49
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prototyping of an Individualized Multi-Material Wrist Orthosis Using Fused Deposition Modelling
Autorzy:
Górski, Filip
Kuczko, Wiesław
Weiss, Weronika
Wichniarek, Radosław
Żukowska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/102639.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
wrist orthosis
3D printing
fused deposition modelling
multi-material
FDM
ABS
TPU
orteza nadgarstka
druk 3D
modelowanie z topieniem
wielomateriały
Opis:
The paper presents the design and manufacturing process of an individualized wrist orthosis. The patient’s upper limb was 3D scanned and the orthosis was designed using a CAD system. Each part of the orthosis consists of two different materials that fulfill different functions. By using the double-head Fused Deposition Modelling machine it was possible to produce these parts in a single process without the need for additional assembly operations. The orthosis has been tested for mutual fit of parts, strength and comfort of use.
Źródło:
Advances in Science and Technology. Research Journal; 2019, 13, 4; 39-47
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of infill and density pattern on the mechanical behaviour of ABS parts manufactured by FDM using Taguchi and ANOVA approach
Autorzy:
Othmani, M.
Zarbane, K.
Chouaf, A.
Powiązania:
https://bibliotekanauki.pl/articles/2175753.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
fused deposition modelling
infill pattern
infill density
finite element analysis
Taguchi
modelowanie metodą osadzania topionego
wzór wypełnienia
gęstość wypełnienia
analiza elementów skończonych
Opis:
Purpose: The present work aims to investigate the effect of many infill patterns (rectilinear, line, grid, triangles, cubic, concentric, honeycomb, 3D honeycomb) and the infill density on the mechanical tensile strength of an Acrylonitrile Butadiene Styrene (ABS) test specimen manufactured numerically by FDM. Design/methodology/approach: Computer-Aided Design (CAD) software has been used to model the geometry and the mesostructure of the test specimens in a fully automatic manner from a G-code file by using a script. Then, a Numerical Design of Experiments (NDoE) has been carried out by using Taguchi method and the Analysis of Variance (ANOVA). The tensile behaviour of these numerical test specimens has been studied by the Finite Element Analysis (FEA). Findings: The FEA results showed that a maximal Ultimate Tensile Strength (UTS) was reached by using the ‘concentric’ infill pattern combined with an infill density of 30%. The results also show that the infill pattern and the infill density are significant factors. Research limitations/implications: The low infill densities of 20% and 30% that have already been used in many previous studies, we have also applied it in order to reduce the time of the simulations. Indeed, with high infill density, the simulations take a very excessive time. In an ongoing study, we predicted higher percentages. Practical implications: This study provided an important modelling tool for the design and manufacture of functional parts and helps the FDM practitioners and engineers to manufacture strong and lightweight FDM parts by choosing the optimal process parameters. Originality/value: This study elucidated the effect of various infill patterns on the tensile properties of the test specimens and applied for the first time a NDoE using numerical test specimens created by the mesostructured approach, which considerably minimized the cost of the experiments while obtaining an error of 6.8% between the numerical and the experimental values of the UTS.
Źródło:
Archives of Materials Science and Engineering; 2021, 111, 2; 66--77
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prototypowanie elektrycznej protezy dłoni z użyciem technik wytwarzania przyrostowego
Prototyping of electrical hand prosthesis using additive manufacturing technologies
Autorzy:
Kowalczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/2063790.pdf
Data publikacji:
2017
Wydawca:
Międzynarodowe Stowarzyszenie na rzecz Robotyki Medycznej
Tematy:
elektryczna proteza dłoni
czujnik napięcia mięśni
wytwarzanie przyrostowe
metoda osadzania topionego materiału
electrical hand prosthesis
EMG muscle activity sensor
additive manufacturing technologies
fused deposition modelling
Opis:
Tematem prezentowanej pracy jest prototyp elektrycznej protezy dłoni z użyciem technik wytwarzania przyrostowego. Przedstawione wyniki są rezultatem pracy inżynierskiej [1] pt. Prototypowanie elektrycznej protezy dłoni z użyciem technik wytwarzania przyrostowego, która została zrealizowana na kierunku Inżynieria Biomedyczna na Politechnice Poznańskiej. Celem pracy było zaprojektowanie i wytworzenie elektrycznej protezy dłoni metodą osadzania topionego materiału. Zastosowane rozwiązanie umożliwiło wykonanie sztucznej kończyny z możliwością zginania palców, a także przeciwstawiania i odprowadzania kciuka. Jej sterowanie zrealizowano przez elektrody, które odbierały sygnały napięcia mięśniowego. Były one przekazywane do czujnika pomiaru aktywności mięśni EMG, który przesyłał je do Arduino Leonardo. Płytka z mikrokontrolerem sterowała serwonapędami, których obrót orczyków wprawiał w ruch poszczególne palce. Założeniem pracy było zaprojektowanie lekkiej, funkcjonalnej i tańszej od dostępnych na rynku rozwiązań protezy dłoni. Część teoretyczna pracy omawia protezy i ich podział, przyczyny protezowania i stopnie amputacji. Część praktyczna przedstawia proces projektowania wraz z doborem parametrów sztucznej kończyny oraz jej wytworzenie. W zakończeniu podsumowano właściwości protezy takie jak: funkcjonalność, masa, koszt oraz czas wytwarzania elektrycznej protezy dłoni.
The subject of this work is the prototyping of an electrical hand prosthesis using additive manufacturing technologies. The results, which were presented at Poznan University of Technology, represent a part of an engineering thesis of Biomedical Engineering Prototyping of electrical hand prosthesis using additive manufacturing technologies. The aim of this work was to design and manufacture a hand prosthesis by fused deposition modelling. The applied solution allowed to manufacture an artificial limb with ability to flex the fingers and to aditionally make moves such as the opposition and reposition of the thumb. The control was regulated by biomedical electrodes, which received the muscle tone signals and send them to the EMG muscle activity sensor and further to the Arduino Leonardo. The board with a microcontroller controlled the work of servomechanisms in which the rotation of the horn caused the fingers' movement. The assumption of this work was to design more lightweight, functional and cheaper solutions compared to commercially available electrical hand prosthesis. The theoretical part of this work discusses prostheses and their types, causes of substitution of prosthesis and levels of amputation. The practical part of this paper presents the process of designing an artificial limb with choices of parameters and manufacturing of the prosthesis. The conclusion of this experiment gives evidence for the existence of features of the prosthesis such as: functionality, mass, cost and manufacturing time.
Źródło:
Medical Robotics Reports; 2017, 6; 47--54
2299-7407
Pojawia się w:
Medical Robotics Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
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