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    Wyświetlanie 1-3 z 3
    Tytuł:
    An Analysis of the Quality of the Thick-Walled S355J2+N Steel Joint Welded by the MAG Method
    Autorzy:
    Krawczyk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/353891.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    welding
    properties of joints
    structural steel
    non-destructive testing
    destructive testing
    optimizing welding conditions
    Opis:
    An analysis of the quality of the thick-walled S355J2+N steel welded joint used most frequently in the general-building, power and other contemporary steel constructions is presented in the following article. A process of examining welding technologies was made on the tick-walled butt joints of plates by using the MAG – 135 welding method. The aim of the discussed topic was to optimize the process of welding thick-walled welded joints due to their mechanical strength properties and efficiency.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2A; 833-839
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Time – frequency dynamic characteristics 2D in the quality assessment of welded joints
    Autorzy:
    Szeleziński, A.
    Muc, A.
    Murawski, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/244249.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    welding
    welded joints
    non-destructive testing
    NDT
    SHM
    vibrations
    time–frequency characteristics
    Opis:
    The authors of the article have been looking for a new parameters and dynamic characteristics, which can be applied to non-destructive testing of welded joints. All characteristics have been based on recorded data generated during the vibration tests of welded joints with and without failures. The article deals with the methods of assessing welding joints using 2D: time – frequency dynamic characteristics. A calculation procedure used for analysing simultaneous changes of the response modules, registered by acceleration sensors was presented. Vibrations amplitudes were transformed to a function of time and frequency (simultaneously) and presented over 2D time – frequency characteristics. The analyses of the characteristics were performed for a plate without any welded joint, for a plate with non-defected welded joint and for a plate with a welded joint defected by an edge bonding. Having analysed registered 2D time – frequency dynamic characteristics it can be noticed that presenting the responses analysed simultaneously over the time and frequency allows evaluating if examined system maintains non-linearity and, at the same time, it allows to indirectly assess the quality of the welded joint. The proposed measure parameters of the quality of a welded joint can be defined as a dispersion of colours on the obtained characteristics. The faults (and the vibration nonlinearity) of the welded joints is bigger if the dispersion is greater.
    Źródło:
    Journal of KONES; 2018, 25, 2; 357-361
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    2D and 3D time-frequency dynamic characteristics in the quality assessment of welded joints
    Autorzy:
    Szeleziński, A.
    Muc, A.
    Murawski, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/135313.pdf
    Data publikacji:
    2018
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    welding
    welded joints
    non-destructive testing
    NDT
    SHM
    vibrations
    time-frequency characteristics
    Opis:
    The authors of this article have been looking for new parameters and dynamic characteristics which can be applied to the non-destructive testing of welded joints. All the characteristics have been based on the recorded data generated during the vibration tests of welded joints both with and without failures. This article has dealt with the methods of assessing welded joints using either 2D or 3D time-frequency dynamic characteristics. The calculation procedure that was used for analyzing the simultaneous changes of the response modules, registered by acceleration sensors, has been presented. The vibration amplitudes were transformed into a function of time and frequency (simultaneously) and presented over 2D or 3D time-frequency characteristics. The analyses of the characteristics were performed for a plate without a welded joint, for a plate with a non-defective welded joint and for a plate with a defective welded joint caused by edge bonding. Having analyzed and registered the 2D or 3D time-frequency dynamic characteristics it could be noticed that by presenting the responses, analyzed simultaneously against time and frequency, allowed for the evaluation of whether the examined system maintained non-linearity and, at the same time, allowed for the quality of the welded joint to be indirectly assessed. The proposed measurement parameters of the quality of a welded joint can be defined as a dispersion of the colors from the obtained characteristics. The faults (and the vibration nonlinearity) of the welded joints will be bigger if the dispersion is greater.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 56 (128); 41-46
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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