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    Wyświetlanie 1-11 z 11
    Tytuł:
    Wybrane parametry procesu spalania mieszanin oleju napędowego z eterem etylo-tert-butylowym w silniku o zapłonie samoczynnym
    The selected parameters of the combustion process of diesel fuel and ethyl-tert-butyl ether mixtures in diesel engine
    Autorzy:
    Longwic, R.
    Lotko, W.
    Górski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/395487.pdf
    Data publikacji:
    2012
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    silnik o zapłonie samoczynnym
    warunki nieustalone
    proces spalania
    eter etylo-tert-butylowy
    diesel engine
    transient conditions
    burning process
    ethyl tert-butyl ether
    Opis:
    W artykule przedstawiono wybrane parametry procesu spalania mieszanin eteru etylo-tert-butylowego (EETB) z olejem napędowym w silniku o zapłonie samoczynnym. Badania prowadzono metodą swobodnego rozpędzania silnika. Poddano analizie wpływ parametrów fizykochemicznych badanych paliw na obserwowane parametry procesu spalania.
    In the article shown the selected parameters of the combustion process of ethyl-tert-butyl ether (EETB) with diesel fuel mixtures in Diesel engine. Research conducted by the free engine run-up. Explores the impact of physico-chemical parameters of the tested fuels on combustion process parameters observed.
    Źródło:
    Postępy Nauki i Techniki; 2012, 15; 84-92
    2080-4075
    Pojawia się w:
    Postępy Nauki i Techniki
    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:
    Analiza zacierania elementów pompy wtryskowej rozdzielaczowej CAV DPA zasilanej mieszaniną ON i EETB
    The analysis of scuffing failure of a CAV DPA injection pump fuelled with a mixture of diesel fuel and ETBE
    Autorzy:
    Gielniewski, R.
    Górski, K.
    Lotko, W.
    Michalczewski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/188323.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    zatarcie
    pompa wtryskowa
    olej napędowy
    aparat czterokulowy
    eter etylo-tert-butylowy (EETB)
    scuffing
    injection pump
    diesel fuel
    four-ball apparatus
    ethyl tert-butyl ether (ETBE)
    Opis:
    W pracy dokonano analizy przyczyny zacierania elementów pompy wtryskowej zasilanej mieszaniną oleju napędowego i EETB. W wyniku przeprowadzonych analiz podejrzewano, że przyczyna zatarcia tkwi w obniżeniu jakości paliwa. Badania właściwości smarnych paliwa przeprowadzono w wykorzystaniem aparatu czterokulowego. W wyniku badań stwierdzono, że dodatek eteru etylotert-butylowego, w ilości 10% lub większej, zdecydowanie obniża właściwości smarne oleju napędowego (nawet o kilkadziesiąt procent), co było przyczyną zacierania elementów pompy wysokiego ciśnienia i rozdzielacza paliwa.
    The paper is directed at the determination of the cause of scuffing in an injection pump fuelled with the mixture of diesel fuel and ethyl tert-butyl ether (ETBE). Based on performed theoretical studies, it was suspected that the cause of scuffing was the decrease in lubricating properties of fuel. To check it, tribological tests were performed using a four-ball apparatus. Based on the performed tests it was stated that the addition of 10% of ethyl tert-butyl ether significantly decreases lubricating properties of the fuel (by several percent). It was the main reason for premature scuffing of the injection pump parts.
    Źródło:
    Tribologia; 2013, 4; 33-43
    0208-7774
    Pojawia się w:
    Tribologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prototyping of cosmetic prosthesis of upper limb using additive manufacturing technologies
    Autorzy:
    Radosh, A.
    Kuczko, W.
    Wichniarek, R.
    Górski, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/102410.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    upper limb
    additive manufacturing
    cosmetic prosthesis
    medical prototype
    Opis:
    This paper describes prototyping of an individualized cosmetic arm prosthesis. Aim of the studies was to obtain an anatomically correct, lightweight prosthesis. It was accomplished using additive manufacturing technology of fused deposition modeling. The data was obtained by 3D scanning. An experimental concept of dual extrusion of two different materials was applied – the prosthesis was divided into an elastic shell and a rigid core, manufactured in one process. Obtained results were positive.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 3; 102-108
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prototyping of individual ankle orthosis using additive manufacturing technologies
    Autorzy:
    Wierzbicka, N.
    Górski, F.
    Wichniarek, R.
    Kuczko, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/102907.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    ankle orthosis
    additive manufacturing
    reverse engineering
    Opis:
    The paper presents design and manufacturing process of an individualized ankle orthosis using additive manufacturing technologies and reverse engineering. Conventional processes of manufacturing of orthoses are expensive and time consuming Thus, an alternative method was proposed. The patient’s leg was 3D scanned and the orthosis was designed using a CAD system. It was then manufactured using the Fused Deposition Modelling technology, assembled and fully tested. Positive results were obtained.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 3; 283-288
    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:
    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:
    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 marker arrangement on positioning accuracy of objects in a virtual environment
    Autorzy:
    Górski, F.
    Wichniarek, R.
    Kuczko, W.
    Zawadzki, P.
    Buń, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/102454.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    marker arrangement
    positioning
    virtual environment
    Opis:
    The paper presents results of studies undertaken by the authors, aimed at determination of character of influence of marker arrangement on real-time measurement of position and orientation of an object, using an exemplary optical tracking system PST-55. Such a system can be used for interaction in immersive Virtual Reality applications. To ensure better immersion of a user in a virtual environment, it is necessary to directly translate its actions into 3D image presented by the VR application. It is possible, among other things, by the application of systems for tracking user’s movements. During the presented studies, an object with infrared-reflective markers deployed on its surface was placed in the center of a rotary table, then it was measured by the tracking system to determine the influence of the object angular position on the accuracy of determination of its position and orientation by the examined device. The measurements were performed for several different arrangements of markers, to formulate guidelines for their deployment on objects used for work in a virtual environment.
    Źródło:
    Advances in Science and Technology. Research Journal; 2015, 9, 28; 112-119
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dimensional accuracy of parts manufactured by 3d printing for interaction in virtual reality
    Autorzy:
    Górski, F.
    Wichniarek, R.
    Kuczko, W.
    Zawadzki, P.
    Buń, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/957957.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    3D Printing
    dimensional accuracy
    Virtual Reality
    ultrasound head
    Opis:
    Realism of a Virtual Reality simulation can be improved by use of physical objects tracked in real time. The paper presents possibility of using low-cost FDM process, realized by MakerBot Replicator 2X machine, in comparison with a professional one to build tooling for a simulation of ultrasound examination procedure. The objects were manufactured on two different machines out of ABS material, 3D scanned for accuracy testing and finally possibilities of their use in a VR system were evaluated.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 4; 279-285
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strength of abs parts produced by fused deposition modelling technology – a critical orientation problem
    Autorzy:
    Górski, F.
    Wichniarek, R.
    Kuczko, W.
    Zawadzki, P.
    Buń, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/957964.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    ABS material
    FDM technology
    strength
    Opis:
    Numerous experimental studies, including experiments performed by the authors, have shown that the part orientation during layer deposition has a very strong in-fluence on final strength of a product manufactured by additive Fused Deposition Technology. The paper presents the results of tensile, bending and impact strength tests performed on samples of various orientations, made out of ABS material using FDM technology. The results of these tests allowed discovering a unique phenomenon – with the changing orientation, not only the values of strength indexes change, but macroscopic material behavior under load as well. The transition between a “yield point” and “brittle” material usually happens in a certain range of orientation values, named a critical orientation by the authors. The paper indicates supposed ranges of critical orientation for various types of loads
    Źródło:
    Advances in Science and Technology. Research Journal; 2015, 9, 26; 12-19
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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