Wyniki wyszukiwania - Biblioteka Nauki

1

Badanie właściwości mechanicznych materiałów stosowanych w technologii FDM

100%

Snopczyński M. , Kotliński J. , Musiałek I.

Mechanik

|

2019

|

tom R. 92, nr 4

285--287

PL

Wraz z postępem technologii druku 3D rozwijane są nowe materiały stosowane do druku. W praktyce zdarza się, że konstruktor nie dysponuje wszystkimi danymi o materiale, którego chce użyć. W artykule przedstawiono wyniki badań wytrzymałości na rozciąganie próbek drukowanych metodą FDM. Drukowanie 3D metodą FDM jest rozpowszechnione, jednak właściwości stosowanych w tej metodzie materiałów nadal nie są w pełni poznane. Celem badań było uzyskanie informacji o parametrach wytrzymałościowych stanowiących podstawę dalszych analiz.

EN

With the development of 3D printing technology, there is a development in the use of new printing materials. In practice, it often happens that the constructor does not have full data about the material that he wants to use. The article presents the results of tests of tensile strength of samples printed using the FDM method. 3D printing using the FDM method is widespread, however, the properties of the materials used in this method are still not fully understood. The aim of the research was to obtain information on strength parameters that form the basis for further analyzes.

2

A review of rapid manufactured parts post processing methods

100%

Grabowik C. , Kalinowski K. , Ćwikła G. , Krenczyk D.

Selected Engineering Problems

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2015

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tom nr 6

27--32

EN

In spite of constant development of rapid manufacturing methods and apparatus, rapid manufactured parts still offer limited quality, both dimensional, and surface. Taking into account above there is still a need for additional product finishing. Currently used finishing methods include the two basic types; it is with or without material loss. In this paper a short review of both types of finishing methods is given.

3

Główne parametry eksploatacyjne wpływające na jakość wydruku w technologii FDM

100%

Kiński W. , Pietkiewicz P.

Przegląd Mechaniczny

|

2017

|

tom nr 6

54--56

PL

W artykule przedstawiono analizę wielu różnych parametrów, które wpływają na jakość drukowanych modeli w technologii FDM. Omówione zostały własności zarówno samego urządzenia (drukarki 3D), materiału, jak i oprogramowania służącego do sterowania drukarką.

EN

The article presents an analysis of a number of parameters that affect the quality of the printed models in the FDM technology. There were discussed the properties of the device itself (3D printer), material and software used to control the printer.

4

Analiza jakości wydruku elementu z termoplastu ABS wykonanego w technologii FDM

100%

Mazurkiewicz A.

Autobusy : technika, eksploatacja, systemy transportowe

|

2017

|

tom R. 18, nr 6

956--960, CD

PL

W artykule wskazano na potrzebę wiedzy o zależnościach wielu parametrów technologicznych od jakości wytwarzanych elementów na drodze osadzanie topionego materiału - FDM. Zwrócono uwagę na ograniczenia związane z wykorzystaniem termoplastów do technologii FDM. Określono możliwe wystąpienie błędów kształtu wytwarzanego wyrobu przy zastosowaniu profesjonalnej drukarki. Obserwacja mikroskopowa powierzchni materiału wykazała powstałe w strukturze materiału (warstw oraz powierzchni) wady, wynikać one mogą z niedokładności posuwów wykorzystanego urządzenia drukującego, oraz z jakości filamentu. Widok powierzchni w obszarach początku nakładania warstw (zgniatania zmiękczonego ABS) jak też widoczne poszerzenia wymiaru i zmniejszenie grubości warstw mogły wynikać ze zmiennych warunków nakładania warstw, zmiennej prędkość posuwu lub ilości wyciskanego filamentu ABS.

EN

The article indicates the need for knowledge on the dependency of many technological parameters of the quality of the produced pieces by the fused deposition modeling - FDM. The limitations associated with the use of thermoplastics for FDM technology have been highlighted. There have been identified possible shape errors of the product manufactured using a professional printer. Microscopic observation of the surface of the material showed defects in structure (layers and surface), that may result from inaccuracies of the used printing device feed and the quality of the filament. View of the surface in the areas of early layering (crushing softened ABS) as well as the apparent expansion of the dimension and reducing the thickness of the layers may be due to changing layering conditions, variable feed speed or the amount of extruded ABS filament.

5

Wpływ parametrów druku 3D w technologii FDM na własności mechaniczne i użytkowe obiektów wykonanych z PLA

100%

Loncierz D. , Kajzer W.

Aktualne Problemy Biomechaniki

|

2016

|

tom z. 10

43--48

PL

W artykule przedstawiono problematykę związaną z procesem szybkiego prototypowania, skupiając się na technologii FDM druku 3D. W toku prowadzonych badań wyznaczono parametr mający decydujący wpływ na zwiększenie własności wytrzymałościowych wytwarzanych obiektów. Wykazano również jak zmiana parametrów druku wpływa na dokładność odwzorowania próbek, ich jakość powierzchni bocznych, a także ilość zużytego do produkcji modeli materiału. Wyniki przeprowadzonych badań oceniono i przedstawiono w postaci wykresów, porównując je z wartościami referencyjnymi dla badanego materiału.

EN

The article has taken problems related to the process of rapid prototyping, specifically FDM 3D printing technology. The purpose of study was to determine the impact of printing parameters during production and functional properties of models. A series of search intended to show the differences in mechanical and functional properties according to the adopted parameters. The results of tests evaluated and presents in clear statements, comparing them with the reference values of the test material. The article shown how adjustable parameters affect to the accuracy of samples, the quality of the side surfaces, and the amount of material used to produce models.

6

Filament z kompozytu PVB do zastosowań w druku 3D (FDM)

100%

Tartakowski Z. , Cimander K. , Burzyński M.

Przetwórstwo Tworzyw

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2018

|

tom T. 24, Nr 5 (185)

36--42

PL

Techniki przyrostowe są coraz częściej stosowane w procesach produkcyjnych. Ich rozwój w znacznym stopniu determinowany jest nowymi materiałami. Najbardziej dynamicznie rozwija się druk w technologii FDM (ang. Fused Deposition Modelling) gdzie filament wytworzony jest z tworzywa termoplastycznego. W pracy przedstawiono możliwość wykorzystania recyklatu PVB do wytworzenia kompozytu polimerowego przeznaczonego do druku 3D. Z materiału wytworzono techniką ekstruzji filament, wykonano wydruki próbek, które następnie poddano badaniom. Porównano również właściwości próbek drukowanych i wytwarzanych technologią przetwórstwa wtryskowego. Stwierdzono, że nowy materiał może mieć zastosowanie na wyroby elastyczne oraz jego adhezja do podłoża szklanego jest dobra.

EN

Additive techniques are increasingly used in manufacturing processes. Their development is determined mostly by new materials. FDM (Fused Deposition Modeling) is the most dynamically developing 3D printing technique where the filament is made of a thermoplastic. The paper presents the possibility of using recyclate PVB to produce a polymer composite intended for 3D printing. Filament were prepared by the technique of extrusion and then prints of samples were made which were tested. The properties of printed samples and those produced by injection processing technology were compared. It has been found that the new material can be applied to flexible products and its adhesion to the glass substrate is good.

7

Analysis and testing of the dimensional accuracy of parts made with the FDM technology

100%

Kalinowski K. , Grabowik C. , Janik W.

Selected Engineering Problems

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2013

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tom nr 4

103--108

EN

In this paper the methodology applied during the analysis and testing processes of the dimensional accuracy of parts made with FDM technology is shown. The manufactured parts were made on the basis of the technical documentation delivered by the ordering company. The main purpose of the conducted research was to check the differences between chosen dimensions of original parts made with injection moulding and those made with FDM technology. The short characteristic of the applied manufacturing technology and the research methodology were also presented in the paper.

8

Zmienność wybranych parametrów SGP powierzchni modeli wykonanych technologią FDM

100%

Bazan A. , Kawalec A. , Sałata M. , Cena I.

|

2016

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tom R. 89, nr 11

1686--1687

PL

W artykule opisano badania wybranych parametrów wysokościowych i przestrzennych SGP powierzchni modeli wykonanych rapid technologią FDM (fused deposition modeling). Zmienność wartości analizowanych parametrów topografii powierzchni badano w różnych obszarach ścian bocznych modeli, które były nachylone do płaszczyzny referencyjnej pod różnymi kątami.

EN

In the paper there are described investigations of chosen surface texture parameters of models made with one of rapid technologies – FDM (Fused Deposition Modeling). The variations of values of analyzed surface texture parameters were investigated in different areas of the models’ side faces which were inclined to the reference face with different angles.

9

Badania jakości wytwarzania metodą szybkiego prototypowania FDM

100%

Kosmol J. , Kopytyński K. , Lehrich K. , Dyrbuś G.

|

tom nr 3

165-176

PL

W artykule przedstawiono jedną z metod szybkiego prototypowania FDM bazującą na wyciskaniu uplastycznionego materiału klasy ABS. Przedstawiono pewną propozycję oceny jakości przedmiotów wykonywanych w tej technice. Ocena ta wymaga pomiarów chropowatości powierzchni oraz dokładności geometrycznej na drodze porównania rzeczywistych wymiarów geometrycznych z wymiarami w modelu CAD przedmiotu. Przeprowadzone badania wykazały, że taka technologia pozwala na uzyskanie 2-3 klasy chropowatości a dokładność geometryczna wyraża się błędem na poziomie 0,1 mm.

EN

In the paper one of the Rapid Prototyping methods is shown. The FDM method based on extrusion of warmed plastic material like ABS is described. The paper presents a proposition of evaluation method of detail quality manufactured using FDM method. The evaluation needs measurements of surface roughness and geometrical accuracy, comparing measured values and nominal values (dimensions in CAD model). Carried out experiments show, that this Rapid Prototyping technology makes possible to obtain 2-3 class of surface roughness and geometrical accuracy of linear dimensions about 0,1 mm.

10

Analiza numeryczna i fizyczna modelu wykonanego przyrostową technologią FDM

100%

Cygnar M. , Woś P. , Budzik G.

Mechanik

|

2015

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tom R. 88, nr 12CD2

35--39

EN

The article presents the results of numerical and physical analysis of model of the beam made in incremental method Fused Deposition Modeling (FDM). The aim of the study was undertaken to compare the results of numerical analysis using FEA model at a given internal structure of the real model. FEM analysis was carried out on system CATIA. The physical model was made using the apparatus operating uPrint FDM technology. Tests on samples of individuals was performed using a testing machine.

11

Analiza zależności czasu budowania modeli od zmian parametrów wytwarzania w technologii FDM

100%

Cader M. , Uszyńska M.

|

2013

|

tom R. 86, nr 2CD

PL

W pracy przedstawiono wyniki i wnioski z analiz czasu budowania modeli z zastosowaniem technologii FDM. Czas budowania modeli zależy od geometrii i doboru parametrów procesu oraz średnicy włókna wytłaczanego materiału. Dlatego w pracy skupiono się na analizie czasu budowania dwóch różnych typów modeli: o prostej i skomplikowanej geometrii. Modele wytworzono z trzech różnych materiałów, które różnią się od siebie właściwości fizycznymi: ABS M30, PC (Poliweglan), ULTEM*9085. Modele budowano przy zastosowaniu dwóch różnych typów końcówek drukujących, co oznacza że modele powstawały z włókien materiałowych o różnych średnicach.

EN

An article presents the results of study and conclusion based on the analysis of time of building models using FDM technology. Building time depends on the shape of geometry, process parameters and diameter of the extrudate materials fiber. Therefore, studies focuses on the analysis of time of build the different models of simple and complex geometries. Models were built from three different materials, which differ in physical properties: ABS-M30, PC (Polycarbonate), ULTEM9085. Models were built using two types of tips, which means that models formed from fibers of two different diameters.

12

Surface Analysis of ABS 3D Prints Subjected to Copper Plating

94%

Maciąg T. , Wieczorek J. , Kałsa W.

Archives of Metallurgy and Materials

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2019

|

tom Vol. 64, iss. 2

639--646

EN

3D printing in FDM (Fused Deposition Modelling) technology is commonly used, mainly in the preparation of prototypes, but also for the production of ready-made elements. Objects printed using the FDM method have characteristic, adverse surface features related to the limitations of this technology. That is why surface treatment of 3D prints becomes crucial. One of the method is metal plating of elements. The most frequently used material in FDM technology is PLA (polylactic acid) and ABS (acrylonitrile butadiene styrene). Study of surface parameters determination for ABS prints after galvanic copper plating is presented in this paper. For this purpose, samples printed with ABS were smoothed in acetone vapour. Most favorable parameters of the surface were obtained for samples that had contact with acetone vapour for 60 minutes. Ultimately, surface analysis of samples after graphite coating and subjected to copper plating was performed. It was found that surface parameters are close to results obtained with traditional methods of metal processing.

13

The Influence of Layer Height on the Tensile Strength of Specimens Printed in the FDM Technology

94%

Miazio Ł.

Technical Sciences / University of Warmia and Mazury in Olsztyn

|

2021

|

tom nr 24(1)

51--56

EN

This article analyzes the influence of layer height on the tensile strength of PLA specimens printed in the Fused Deposition Modeling (FDM) technology. The maximum breaking force of specimens with 30% and 100% infill density was determined at layer height of 0.05 mm, 0.1 mm, 0.2 mm and 0.3 mm. In the case of 30% infill, the highest value of the force was obtained for a layer with a height of 0.05 mm (which corresponds to 22.7 MPa), and for a 100% infill for a layer of 0.2 (which corresponds to 40 MPa). Over this layer height of 0.2 mm is the most poly-optimal due to the time prints and strength (which corresponds to 19.7 MPa).

14

Modelling and prototyping of aeronautical planetary gear demonstrator

94%

Budzik G. , Kozik B. , Pacana J. , Żmuda B.

|

tom Vol. 17, No. 3

49-54

EN

The article presents methodology of modelling and prototyping process for the demonstrator of aeronautical planetary gear. Contemporary methods of designing gear make use of computer aided designing systems (CAD), computer aided engineering (CAE) and computer aided manufacturing (CAM) including also rapid prototyping (RP). First stage of designing gear is always defining basic parameters of the gear work (among others: transmission ratio, rotational speed, power) determined by the gear destination. After carrying out the gear calculations it is possible to create 3D-CAD models ofwheels and other elements of the gear. 3D-CAD systems are often equipped with a module for analysing geometrical parameters and cooperation of its individual elements e.g. the track of cooperation. A detailed analysis of cooperation of gear wheels' elements allows for early detection of construction mistakes of models and for deleting the mistakes. If 3D-CAD models are made correctly, it is possible to record the geometrical data in an appropriate format of numerical data. The following stage of making the prototype of the gear is preparing numerical data necessary for making the demonstrator by means of rapid prototyping method. The accuracy of making physical prototype depends a lot on the accuracy of 3D-CAD/3D-RP model made by means of processing the numerical data. The demonstrator allows for analysis of constructional solutions of the gear based on physical model and for doing introductory stand tests. The paper presents the process of making the demonstrator of planetary gear applying 3D-CAD modelling and Rapid Prototyping. For making the physical prototype a Fused Deposition Modelling (FDM) method of Rapid Prototyping was applied.

15

Isogeometric approximation for dynamics of infinite string using difference equation method

94%

Rakowski J. , Wielentejczyk P.

Engineering Transactions

|

2016

|

tom Vol. 64, iss. 2

197--211

EN

An efficient method of vibration investigation of an infinite string using the isogeometric analysis (IGA) with B-spline basis functions is considered. The research objective is to compare IGA, finite element method (FEM) and exact formulation approaches. In the IGA approximation a system is divided into a set of regularly distributed coordinates assembled in a uniform knot vector. Transverse displacements are described by linear, quadratic, cubic and quartic B-spline basis functions. The geometrical and mass matrices are found for all types of approximations. The equilibrium conditions for an arbitrary interior element are expressed in the form of one difference equation equivalent to the infinite set of equations obtained by numerical IGA formulation for this dynamic problem. Assuming the wavy nature of a vibration propagation phenomenon the dispersive equations are obtained. The ranges of vibration frequencies for the dispersive and reactive cases are determined. The influences of the adopted discretization, mass distribution and initial axial force effects on the wave propagation phenomenon are examined.

16

Weighted residual method as a tool of FDM algorithm construction

94%

Mochnacki B. , Lara-Dziembek S.

|

tom Vol. 9, nr 1

147-153

EN

Weighted Residual Method can be treated as a kind of "common root" of well known algorithms such as FDM, FEM, BEM, collocational methods etc. This point of view is completely motivated and it is possible to show that all of these methods are the special cases of WRM. In this paper the construction of typical FDM algorithm for non-linear parabolic equations (on the basis of WRM) is presented. To simplify the considerations, the 1D task is discussed.

17

Analysis of thermal processes occurring in heated multilayered metal films using the dual-phase lag model

94%

Majchrzak E. , Kałuża G.

|

2017

|

tom Vol. 69, nr 4-5

275--287

EN

A multilayered thin metal film subjected to an ultra-short laser pulse is considered. A mathematical description of the discussed process is based on the system of the dual-phase lag equations supplemented by appropriate boundary and initial conditions. Special attention is devoted to the ideal contact conditions at the interfaces between the layers, which in the case of the dual-phase lag model must be formulated in a different way than in the macroscopic Fourier model. To solve the problem the explicit scheme of the finite difference method is developed. In the final part of the paper the example of computations is shown.

18

Wpływ parametrów wydruku modelu wirnika w technologii FDM na parametry energetyczne prototypu pompy normowej

94%

Sitniewski M. , Lorenz W. , Janczak M.

Pompy, Pompownie

|

2023

|

tom nr 1

22--27

PL

W artykule przestawiono krótki przegląd technologii szybkiego prototypowania elementów do budowy w pełni funkcjonalnych modeli i prototypów hydraulicznych maszyn przepływowych. Przedstawiono wyniki badań energetycznych prototypu pomp z wirnikami powstałymi w technologii FDM o różnych parametrach wydruku oraz podjęto próbę wyjaśnienia przyczyn zmian parametrów pompy w odniesieniu do prototypu z wirnikiem wykonanym w docelowej technologii wytwarzania.

19

The Influence of the Processing Temperature of Polylactide on Geometric Structure of the Surface Using FDM Technique

94%

Pszczółkowski B. , Bramowicz M. , Rejmer W. , Chrostek T. , Senderowski C.

Archives of Metallurgy and Materials

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2021

|

tom Vol. 66, iss. 1

181--186

EN

The influence of the processing temperature of polylactide (PLA) on the structure geometry changing (SGC) and its functional properties were analyzed. The PLA samples subjected to testing were manufactured using incremental fused deposition modeling technology (FDM) with processing temperatures ranging from 180°C to 230°C. The topography of the PLA surfaces formed during heat dissipation and generated by the work table was analyzed. The roughness measurements were carried out using the profile method in accordance with PN ISO 3274: 2011. Registered profiles of the surfaces were analyzed numerically in fractal terms using the method of the S(Δx) structure function. The functional properties of the PLA surface were evaluated on the basis of Abbott-Firestone curves, according to PN EN ISO 13565–2: 1999.

20

An exploratory study on the accuracy of parts printed in FDM processes from novel materials

94%

Nieciąg H. , Kudelski R. , Dudek P. , Cieślik J.

Acta Mechanica et Automatica

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2020

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tom Vol. 14, no. 1

59--68

EN

The paper describes the experiment of assessing the chosen geometric characteristics of test models with simple geometry, shaped by the FDM (fused deposition modelling) method of different materials. The influence of the material grade and the degree of infill density on the shrinkage affecting their dimensional deviations and selected surface topography parameters of printed parts was examined and compared. Three different types of materials were used to fabricate the test models, namely HDGLASS and NANOCARBON, two new fibre reinforced composites available in the market and, additionally ABS, a popular monoplastic material. An infill density ratio of 10, 50 and 90% was assumed for each material. Three specimens were made on the same printer for each infill density, which allowed to assess the repeatability of the analysed characteristics. From among many possible shapes of models, a cube was chosen as representing the simplest geometry, facilitating the measurements themselves and the interpretation of the results. New fibre-reinforced materials are more attractive in industrial applications than pure plastics (ABS) due to their mechanical properties or appearance. They are characterized by a relatively low melting point and short cooling time, after which they can return to their original geometry; however, there is a lack of detailed data on the geometric accuracy of parts made of used composite materials. The presented work was to explanatorily broaden the knowledge about the properties of composite made parts. The practical purpose of the research was that on the basis of measurements, it would be possible to indicate among the materials used that particular material whose properties and method of application would allow obtaining the best quality surface and would be the most resistant to thermal loads. An attempt was also made to explain the possible causes of the differences in the observed characteristics of the tested materials.