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Wyszukujesz frazę "Kopas, Peter" wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Modeling of multiaxial state of stress and determine the fatigue lifetime for aluminum alloy during cyclic loadingunder in-and-out of phase shift Φ = 0° and Φ = 90
    Autorzy:
    Uhríčik, Milan
    Kopas, Peter
    Sága, Milan
    Powiązania:
    https://bibliotekanauki.pl/articles/41204259.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Kazimierza Wielkiego w Bydgoszczy
    Tematy:
    sinusoidal cyclic loading
    multiaxial fatigue
    stress
    structural material
    Opis:
    This article deals with determining of fatigue lifetime of structural materials during by multiaxial cyclic loading. The theoretical part deals with the fatigue and with the criterions for evaluation of multiaxial fatigue lifetime. The experimental part deals with modeling of combined bending - torsion loading and determining the number of cycles to fracture in region low-cycle and high-cycle fatigue and also during of loading with the sinusoidal wave form under in phase Φ = 0° and out phase Φ = 90°.
    Źródło:
    Studia i Materiały Informatyki Stosowanej; 2011, 5; 9-13
    1689-6300
    Pojawia się w:
    Studia i Materiały Informatyki Stosowanej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The simulation and the experimental verification of the influence of the tig - welding of the aluminium alloy AlMgSi07 on changes of the mechanical properties in comparison with the basic material
    Autorzy:
    Blatnický, Miroslav
    Kopas, Peter
    Sága, Milan
    Powiązania:
    https://bibliotekanauki.pl/articles/41204171.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Kazimierza Wielkiego w Bydgoszczy
    Tematy:
    sinusoidal cyclic loading
    fatigue test
    stress
    structural material
    Opis:
    The aim of this investigation is to evaluate the influence on fatigue behavior of the welded aluminum alloy AlMgSi07. For the experimental measurement of fatigue of these welds, it is needed to analyse all the changes, which will occur in the weld material in comparison with the basic material. The modern computer simulation and the experimental verification are strong tools for achievement of the required results, for instance a change of the structure, residual stress, a range of the heat affected zone, a deformation of the workpiece etc.
    Źródło:
    Studia i Materiały Informatyki Stosowanej; 2011, 4; 49-54
    1689-6300
    Pojawia się w:
    Studia i Materiały Informatyki Stosowanej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Contribution to random vibration numerical simulation and optimisation of nonlinear mechanical systems
    Autorzy:
    Sága, Milan
    Vaško, Milan
    Handrik, Marian
    Kopas, Peter
    Powiązania:
    https://bibliotekanauki.pl/articles/947404.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    statistical linearization
    sensitivity analysis
    structural optimisation
    linearyzacja statystyczna
    analiza wrażliwości
    optymalizacja strukturalna
    Opis:
    This study considered the solution of the stochastic vibration of non-linear mechanical systems with Gaussian random excitations. It realised a short review of linearisations techniques in stochastic dynamics mainly with application in the area of truss finite element modelling. The presented method of statistical linearisation is applied to numerical testing. In the second part of the article, the sensitivity analysis of the first two stress statistical moments and structural weight minimising subjected to the random stress constrains presented by mean value and standard deviation was brought to the fore. Cross-sectional areas were used as optimising parameters.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2019, 103; 143-154
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multiaxial fatigue experimental analysis of 6063-T66 aluminum alloy of the base material and the welded material
    Autorzy:
    Uhríčik, Milan
    Kopas, Peter
    Palček, Peter
    Oršulová, Tatiana
    Hanusová, Patrícia
    Powiązania:
    https://bibliotekanauki.pl/articles/103995.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    multiaxial fatigue
    aluminum alloy
    fatigue criteria
    welding
    cyclic loading
    zmęczenie wieloosiowe
    stop aluminium
    kryteria zmęczeniowe
    spawanie
    obciążenie cykliczne
    Opis:
    This article deals with determining of fatigue lifetime of aluminum alloy 6063-T66 during by multiaxial cyclic loading. The experiments deal with the testing of specimens for identification of the strain-life behavior of material, the modeling of combined loading and determining the number of cycles to fracture in the region of low-cycle fatigue. Fatigue tests under constant amplitude loading were performed in a standard electromechanical machine with a suitable gripping system. Based on the experimental results the fatigue design curves are compared to the fatigue data from the base material and the welded material and also multiaxial fatigue models, which are able to predict fatigue life at different loads.
    Źródło:
    Quality Production Improvement - QPI; 2019, 1, 1; 334-341
    2657-8603
    Pojawia się w:
    Quality Production Improvement - QPI
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of a Directional Dependenceon Mechanical Properties of Composites Reinforced with Chopped Carbon Fibre Produced by Additive Manufacturing
    Autorzy:
    Majko, Jaroslav
    Handrik, Marian
    Vaško, Milan
    Sága, Milan
    Kopas, Peter
    Dorčiak, Filip
    Sapietová, Alžbeta
    Powiązania:
    https://bibliotekanauki.pl/articles/27313864.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    experimental measurement
    physical properties
    3D printing
    composite
    fibre reinforcement
    MATLAB
    Opis:
    Progress in the industry is accompanied by the development of new materials and more efficient technological production processes. At present, additive production is becoming very attractive in all industries (research, development, production), which brings a number of advantages compared to subtractive methods (customization, production speed, control of material properties by users, etc.). The main advantage of 3D printing is the controlled deposition of material in defined places. Instead of demanding manual labour, fully automated production via computers leads to the manufacturing of complex components from materials whose production in conventional ways would be problematic or even impossible. Because these are new technologies, the main direction of research at present is to identify the basic physical properties of these materials under different types of loading. The main goal of this article is to observe the dependence of the behaviour of the extruded material (thermoplastic reinforced with chopped carbon fibre) on the printing parameters (thickness of the lamina, the orientation of the fibres of the printed material, etc.). Based on published scientific works, it appears that these settings have a significant impact on the achieved physical properties. This is the reason why the authors decided to analyze the influence of these parameters on the basis of processed data from experimental measurements of mechanical properties in the MATLAB program. As this is FFF printing, an essential condition is to identify and specify the directional dependence of the behavior of the printed material. This physical phenomenon is a necessary condition for gradual knowledge for the purposes of a subsequent mathematical description of the material properties. According to the authors, for the purposes of modeling these materials in FEM-based programs, it is essential to define the directional dependence in the plane of the lamina.
    Źródło:
    Archives of Metallurgy and Materials; 2023, 68, 2; 455--461
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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