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    Wyświetlanie 1-8 z 8
    Tytuł:
    Mechanical properties of parts of medical components produced using additive manufacturing technologies
    Autorzy:
    Górski, F.
    Wichniarek, R.
    Kuczko, W.
    Burdzińska, M.
    Jankowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/102279.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    additive manufacturing
    slings
    mechanical properties
    medical devices
    Opis:
    The paper presents results of tests conducted on the elements of medical devices - slings used in medical lifts - manufactured using additive technologies. The project assumed to produce 100 samples of clips with varying design, material and orientation parameter. Samples were manufactured using FDM and SLA processes and then tested for mechanical strength, load transmission and functionality, using certified equipment. The paper shows full methodology and the obtained test results.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 2; 166-171
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Structural Characteristics on the Mechanical Properties of FDM Printed PLA Material
    Autorzy:
    Szczepanik, Stefan
    Nikiel, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/106997.pdf
    Data publikacji:
    2020
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    additive manufacturing
    polymer and plastics
    polylactide
    mechanical properties
    Opis:
    The present study reports on the influence of printing process parameters, architecture, raster, infill orientation and filling on the density, macrostructure, and mechanical properties, including impact resistance, of biodegradable polymer parts fabricated in polylactide (PLA) on a desktop printer. It complements and considers phenomenologically the results of recently published similar studies, including the use of recycled filament. In our study, complex mechanical properties for the samples printed at the same time on a Replicator 2 printer were investigated. Three samples were printed for each test. Full mechanical characteristics (tensile, compression and bend strengths and impact resistance) of the printed PLA material are reported. This is the novelty in comparison to other studies, where the samples test were printed individually or in a series for each test. The shape and thickness of the layered macrostructure, the presence of holes inside the layers, the number of shell perimeters and the fill density all influenced the tensile properties of the printed materials. These results show the possibility of printing with a 0.3, i.e. shorter printing time than 0.1, 0.15 and 0.18 mm layer thicknesses also reported, without significant decrease in mechanical properties. It is interesting to note that the compressive strengths, the yield of 70–80 MPa and a UTS 113–120 MPa for the printed material with a fill density of 94–96% are comparable with those of aluminum.
    Źródło:
    Journal of Casting & Materials Engineering; 2020, 4, 1; 1-8
    2543-9901
    Pojawia się w:
    Journal of Casting & Materials Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
    Tytuł:
    Modelling, manufacturability and compression properties of the CpTi grade 2 cellular lattice with radial gradient TPMS architecture
    Autorzy:
    Maszybrocka, J.
    Gapiński, B.
    Dworak, M.
    Skrabalak, G.
    Stwora, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/201748.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    selective laser sintering
    additive manufacturing
    cellular lattice
    triply periodic minimal surfaces
    mechanical properties
    Opis:
    In the present study, a titanium cellular lattice structure with a mathematical designed porosity gradient was successfully fabricated using the selective laser melting method. The samples with smooth gradient transition of porosity of between 60% and 80% were received for different elementary cell geometries. Elementary cells belong to the triply periodic minimal surfaces family (G, D, I2Y, IWP). Each sample was subjected to a comprehensive analysis including: dimensional metrology and assessment of material defects (X-ray micro-tomography), surface morphology tests (scanning electron microscopy) and mechanical properties (universal testing machine). It has been shown that a cellular lattice with high dimensional accuracy (+ 0.16/– 0.08 mm) and full dense struts can be obtained. According to the assumption, the gradient increases the strength of the cellular lattice samples. The highest increase in plateau stress between the samples with and without gradient was found for the I2Y series (about 185%). Furthermore, it was found that the stress-strain response of the samples depends not only on total porosity, but also on the 3D geometry of the cellular lattice. The stress-strain curves for G, IWP and I2Y samples are smooth and exhibit three characteristic regions: linear elasticity, plateau region and densification region. The size of regions depends on the geometric features of the cellular lattice. For series D, in the plateau region, the fluctuations in stress value are clearly visible. The smoothest stress-strain curve can be noted for the G series, which combined with good mechanical properties (the plateau stress and energy absorbed, at respectively 25.5 and 43.2 MPa, and 46.3J and 59.5J for Gyr_80 and Gyr_6080, which corresponds to a strain of almost 65% and 50%) positively affects the applicability of cellular structures with such geometry.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 4; 719-727
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical properties and geometric accuracy of angle-shaped parts manufactured using the FFF method
    Autorzy:
    Kuczko, Wiesław
    Hamrol, Adam
    Wichniarek, Radosław
    Górski, Filip
    Rogalewicz, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/2128170.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    material extrusion
    additive manufacturing
    mechanical properties
    angle-shaped parts
    wytłaczanie materiału
    produkcja dodatkowa
    właściwości mechaniczne
    części w kształcie kąta
    Opis:
    The paper presents the results of research on the influence of the parameters of Fused Deposition Modelling (FDM) on the mechanical properties and geometric accuracy of angle-shaped parts. The samples were manufactured from acrylonitrile butadiene styrene (ABS) on a universal machine. A complete factorial experiment was conducted. The results indicated that the critical technological parameter was the angular orientation of the sample in the working chamber of the machine. The results were compared with the results of research performed on simple rectangular samples. A significant similarity was found in the relationships between the FDM parameters and properties for both sample types.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 3; e137387, 1--9
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical properties and geometric accuracy of angle-shaped parts manufactured using the FFF method
    Autorzy:
    Kuczko, Wiesław
    Hamrol, Adam
    Wichniarek, Radosław
    Górski, Filip
    Rogalewicz, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/2173630.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    material extrusion
    additive manufacturing
    mechanical properties
    angle-shaped parts
    wytłaczanie materiału
    produkcja dodatkowa
    właściwości mechaniczne
    części w kształcie kąta
    Opis:
    The paper presents the results of research on the influence of the parameters of Fused Deposition Modelling (FDM) on the mechanical properties and geometric accuracy of angle-shaped parts. The samples were manufactured from acrylonitrile butadiene styrene (ABS) on a universal machine. A complete factorial experiment was conducted. The results indicated that the critical technological parameter was the angular orientation of the sample in the working chamber of the machine. The results were compared with the results of research performed on simple rectangular samples. A significant similarity was found in the relationships between the FDM parameters and properties for both sample types.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 3; art. no. e137387
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of Selective Laser Melting (SLM) as a Replacement for Pressure Die Casting Technology for the Production of Automotive Casting
    Autorzy:
    Piekło, J.
    Garbacz-Klempka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1837724.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    additive manufacturing
    selective laser melting
    automotive casting
    mechanical properties
    microstructure
    produkcja dodatkowa
    selektywne topienie laserowe
    odlewy samochodowe
    właściwości mechaniczne
    mikrostruktura
    Opis:
    Selective laser melting is one of the additive manufacturing technologies that is used to produce complex-shaped components for applications in the automotive industry. The purpose of the changes in the design, technology, and material tests was to make a steering gear housing using the SLM method. The steering gear housing was produced by the pressure casting method using an AlSi9Cu3(Fe) alloy. The construction of this housing is adapted to the specifics of left-hand traffic. The change in technology was related to the change of the position of the steering system from right-hand to left-hand and the demand for a limited number of gear housings. It was necessary to make a virtual model of the housing on the basis of the part that was removed from the vehicle. In SLM technology, the AlSi10Mg aluminum alloy was used as a raw material in the form of CL 32Al gas-atomized powder. After the SLM process was completed, the housings were subjected to heat treatment. The AlSi10Mg alloy fabricated by the SLM method after heat treatment is characterized by good plasticity and an average value of tensile strength. The last stage was to check the geometry of the SLM housing with a 3D scanner. As a result, a map of the dimensional deviations from the nominal values was obtained. This data was used to modify the CAD model before the next fabrication process. The use of 3D printing technology allowed for the quick production of elements. The time to develop the technology and the production of the first two gear housings based on a 3D model was seven days.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 2; 9-16
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of surface modification by acetone vaporization on the structure of 3D printed acrylonitrile-butadiene-styrene elements
    Wpływ waporyzacji acetonowej powierzchni elementów wykonanych techniką 3D z kopolimeru akrylonitryl-butadien-styren na ich strukturę
    Autorzy:
    Marciniak, D.
    Szewczykowski, P.
    Czyżewski, P.
    Sykutera, D.
    Bieliński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/945817.pdf
    Data publikacji:
    2018
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    fused deposition modeling
    microcomputer tomography
    acetone vaporization
    additive
    manufacturing
    mechanical properties
    osadzanie topionego materiału
    mikrotomografia komputerowa
    waporyzacja acetonowa
    technologie przyrostowe
    właściwości mechaniczne
    Opis:
    The internal structure of samples produced by additive manufacturing (AM) technology of copolymer acrylonitrile-butadiene-styrene (ABS) was studied by microcomputer tomography (micro-CT). The results of micro-CT were correlated with the mechanical properties of samples. The aim of this paper was to demonstrate the acetone vaporization influence on the structure and mechanical properties of ABS samples printed with additive manufacturing technology. Samples were printed on three different devices and scanned with micro-CT after acetone vapors treatment. Mass and hardness of the samples were measured. Finally, the static tensile test was performed. Irregularly spaced voids, which directly affected samples properties, have been detected. Under the influence of acetone vaporization, the properties of the samples have changed such as: number of voids, mass, hardness, tensile strength.
    Strukturę wewnętrzną próbek wykonanych metodą technologii przyrostowej z kopolimeru akrylonitryl-butadien-styren (ABS) zbadano za pomocą mikrotomografu komputerowego (CT). Wyniki skanów CT skorelowano z właściwościami mechanicznymi próbek. Oceniano wpływ oddziaływania par acetonu na strukturę i właściwości próbek z ABS wykonanych w technologii przyrostowej. Próbki przygotowano z zastosowaniem trzech różnych urządzeń i po waporyzacji acetonowej zeskanowano je za pomocą mikrotomografu. Wyznaczono masę, twardość oraz przeprowadzono statyczną próbę rozciągania próbek. W strukturze elementów z ABS stwierdzono obecność nieregularnie rozmieszczonych porów, wpływających na właściwości próbek. Pod wpływem waporyzacji acetonowej zmieniły się właściwości próbek, takie jak: liczba porów, masa, twardość oraz wytrzymałość na rozciąganie.
    Źródło:
    Polimery; 2018, 63, 11-12; 785-790
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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