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Wyszukujesz frazę "technology development" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Focus on development of quality, high pressure die casting process
    Autorzy:
    Peter, I.
    Rosso, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/354404.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    numerical simulations
    die casting
    development of casting technology
    HPDC optimization
    Opis:
    In contemporary high-pressure die casting foundries, the mastery of each sequence in the production cycle is more and more important. In the paper, an example of virtual analysis of gearbox casting from Al alloy will be presented. It includes a large variety of parameters, as follows: choosing of appropriate foundry technology, calculation of computer simulation of casting process which takes into account the filling process of cold chamber and filling of cavity, model description of three phases in high-pressure die casting, flow of molten metal, solidification, formation of stress and deformations. Additionally, the optimization of cooling and heating systems will be compared with calculated volume defects, dimensions of castings and their deformations with experimentally obtained values.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 1; 125-128
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of Free Electron Lasers in Europe Local and Global Implications : 2016
    Autorzy:
    Romaniuk, R. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/227040.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    laser technology
    laser development
    lasers
    free electron lasers
    photonics
    EUV radiation
    RTG radiation
    research infrastructures
    Opis:
    Free electron laser FELs are built in Europe mainly as nondependent infrastructures, or as a development of synchrotron ones. They are constructed mainly in centres which have considerable experience with synchrotron light sources of the third generation like DESY, Trieste, INFN, etc. Advances in very energetically efficient superconducting linear accelerators for electron beams, like TESLA type, caused an abrupt development of FEL machines all over Europe. New generation of FELs emits light beam of extreme intensity, good parameters, in IR, VIS, UV, EUV and X-ray spectral regions. The machine construction teams comprise also of young active researchers from Poland. In particular, these is a considerable participation of M.Sc. and Ph.D. students from Warsaw University of Technology at building of FLASH I, FLASH II, and EXFEL machines. Unique experiences gathered at work with these large experiments result in development of these young teams, and their further engagement in new initiatives: laser, laser - accelerator, inertial, plasma, plasma - energy, etc. This is what we observe with satisfaction. However, due to the lack of large research infrastructures in Poland, we are not members of the infrastructure owner clubs. Our young researchers may take part in the initiatives only indirectly as members of cooperative teams from the leading countries. As a further consequence, there is also a confined access of Polish laser and accelerator researchers to some kinds of European infrastructure development projects now under realization within the H2020.
    Źródło:
    International Journal of Electronics and Telecommunications; 2016, 62, 2; 203-211
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applying the repertory grid method for technology forecasting: civil unmanned aviation systems for Germany
    Autorzy:
    Eimecke, J.
    Baumert, K.
    Baier, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/407117.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    civil drones
    innovative product development
    multistage expert surveys
    quality requirements
    qualitative research
    quantitative research
    repertory grid method
    technology forecasting
    Opis:
    Multistage expert surveys like the Delphi method are proven concepts for technology forecasting that enable the prediction of content-related and temporal development in fields of innovation (e.g., [1, 2]). Advantages of these qualitative multistage methods are a simple and easy to understand concept while still delivering valid results [3]. Nevertheless, the literature also points out certain disadvantages especially in large-scale technology forecasts in particularly abstract fields of innovation [4]. The proposed approach highlights the usefulness of the repertory grid method as an alternative for technology forecasting and as a first step for preference measurement. The basic approach from Baier and Kohler [5] is modified in-so-far that an online survey reduces the cognitive burden for the experts and simplifies the data collection process. Advantages over alternative approaches through its simple structure and through combining qualitative and quantitative methods are shown and an adaption on an actual field of innovation – civil drones in Germany – is done. The measurement of a common terminology for all experts minimizes misunderstandings during the interview and the achievement of an inter-individual comparable level of abstraction is forced by the laddering technique [6] during the interview.
    Źródło:
    Management and Production Engineering Review; 2017, 8, 3; 22-30
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    IYL 2015 in Poland
    Autorzy:
    Romaniuk, R. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/225981.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    light
    light technologies
    optoelectronics
    photonics
    lasers
    laser technology
    lighting
    medical photonics
    photovoltaics
    optical fibers
    technical infrastructure
    civilization development
    national economy
    Opis:
    Light plays a key role in human’s life. Without light there will be no human life environment. Technologies based on light, called photonics, decide of the development of our civilization. The role of photonics is constantly increasing, especially in such fields as energy, education, agriculture and health. The UN has established the International Year of Light and Light - based Technologies – IYL2015 [1]. The organizers of IYL2015 events are professional organizations, communities, educational organizations, non-profit ones, technological clusters and platforms, but also private sector. The aim is to increase the social consciousness about the role of light and photonics in building of our civilization. This sort of recognition is necessary as a needed component of the development process of the society. Introduction of new technologies, like completely new kind of lighting, new diagnostic and therapeutic methods, new sources of energy, etc., must meet with social acceptance. In the opposite case, isolated development of infrastructure, will meet with obstacles. In Poland, the professional events, technical, trade fairs and outreach ones, are organized in the framework of the IYL2015 by Photonics Society of Poland, Polish Physical Society, Polish Platform of Photonics Technologies, etc. The paper summarizes the issues combined with the organization of the IYL2015 globally and in Poland. Extended version of this paper was published in Polish [2]. The paper is a part of a cycle of articles devoted to analysis of global processes of photonics development. Previous papers concerned initiatives Photonics21 in Europe [3-4], NPI – National Photonics Initiative in USA [5], and development of optical sciences in Poland [6-15].
    Źródło:
    International Journal of Electronics and Telecommunications; 2014, 60, 4; 341-346
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methods of fabrication of medical models with complex spatial structures
    Metody wytwarzania modeli medycznych o złożonej strukturze przestrzennej
    Autorzy:
    Kudasik, T.
    Markowski, T.
    Markowska, O.
    Miechowicz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/380657.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    product development
    vacuum casting
    rapid prototyping
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    rozwój produktu
    odlewanie próżniowe
    prototypowanie szybkie
    Opis:
    The process of creating medical models for experimental tests applying modern Rapid Prototyping methods is presented in the article. Respective Rapid Prototyping methods i.e. JS-PolyJet, Selective Laser Sintering (SLS), ProJet and Vacuum Casting (VS) methods are also characterised. The possibilities of using the above in model research and especially in photoelastic research on the examples of human skull top part and a fragment of syndesmosis of the skull are discussed. Rapid Prototyping and Rapid Tooling methods together with computer aided systems CAD/CAM make it possible to carry out numerical analysis and experimental tests on models of very complicated inside and outside shapes. RP techniques allow for fabricating medical models of a tissue structure of human skeleton bones. In case of photoelastic tests, when examined medical object can be destructed, RT techniques and precisely Vacuum Casting method allows for making medical models with reasonable prices and quantities adequate for experimental aims. There is a possibility of analyzing much bigger range of cases of loading regardless of the costs of experiment. Therefore applying Rapid Prototyping techniques for fabricating medical models allows for extending the possible applications of experimental tests in medicine.
    W artykule przedstawiono proces tworzenia modeli medycznych przeznaczonych do badań eksperymentalnych z wykorzystaniem nowoczesnych metod szybkiego prototypowania. Scharakteryzowano wybrane metody Rapid Prototyping począwszy od JS – PolyJet, SLS, ProJet, a skończywszy na metodzie odlewania próżniowego Vacuum Casting. Omówiono możliwości ich wykorzystania w badaniach modelowych, a w szczególności w badaniach elastooptycznych, na przykładzie górnej części czaszki i fragmentu więzozrostu czaszkowego. Metody szybkiego prototypowania RP i RT z jednoczesnym wykorzystaniem komputerowych systemów wspomagania CAD/CAM pozwalają na przeprowadzenie analizy numerycznej jak i badań eksperymentalnych na modelach o bardzo skomplikowanych kształtach wewnętrznych jak i zewnętrznych. Techniki RP umożliwiają wykonanie modeli medycznych z dokładnym odwzorowaniem kształtu analizowanych elementów szkieletu kostnego. W przypadku badań elastooptycznych, gdzie konieczne jest uszkodzenie badanych modeli medycznych, techniki RT oraz techniki VC, umożliwiają szybkie ich wykonanie w rozsądnych cenach i w ilości wystarczającej do badań. Dzięki temu istnieje możliwość przeanalizowania znacznie rozszerzonego zakresu przypadków obciążania przy ograniczeniu kosztów badań. Zastosowanie technik szybkiego prototypowania do wykonywania modeli medycznych rozszerza możliwości badań eksperymentalnych w medycynie.
    Źródło:
    Archives of Foundry Engineering; 2011, 11, 2 spec.; 125-130
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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