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    Wyświetlanie 1-3 z 3
    Tytuł:
    Examination of mechanical properties of welds of DOCOL 1200M toward application in components of special vehicles
    Autorzy:
    Szczucka-Lasota, Bożena
    Węgrzyn, Tomasz
    Szymczak, Tadeusz
    Jurek, Adam
    Piwnik, Jan
    Wilczyński, Krzysztof Ireneusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2098150.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    special vehicles
    civil engineering
    transport
    welding
    pojazdy specjalne
    inżynieria lądowa
    spawanie
    Opis:
    The paper focuses on modern martensitic steel (Docol 1200M) and its joint manufactured by means of welding process supported by micro-jet cooling for special vehicles’ structures. Docol 1200M is a type of material denoted as AHSS (A- advanced; H - high; S – strength; S - steel) with important material characteristics, which allows the potential to reduce the weight of the construction of transport means. The paper verifies if the use of micro-jet cooling after MAG welding process could help to maintain initial mechanical parameters of special vehicles’ components. The quality of the joining process was checked by nondestructive and destructive tests. Results from tensile tests have enabled capturing the stress-strain curve as well as mechanical parameters and comparison with data of the parent material. Fatigue properties of the weld are described in terms of the fatigue limit and fatigue diagram, presenting fatigue limit as a key mechanical parameter with respect to the application of the joint examined. Testing the fatigue strength of a new steel grade for special vehicles’ structures in the innovative MAG process at micro-jet cooling was treated as the main goal of the study.
    Źródło:
    Transport Problems; 2021, 16, 2; 33--43
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improvement of the mechanical properties of mobile platform stainless construction elements
    Autorzy:
    Szczucka-Lasota, Bożena
    Węgrzyn, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2203858.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    civil engineering
    transport
    mobile platforms
    welding
    316L steel
    inżynieria lądowa
    platformy mobilne
    spawanie
    Stal 316L
    Opis:
    Stainless steel could be treated as the main material used to construct various means of transport, including mobile platforms and tank trucks. An austenitic steel known as 316L steel (1.4401) has high resistance to atmospheric corrosion, natural waters, water vapor, alkaline solutions, and acids, even at elevated temperatures. This steel is weldable, although it is also prone to various types of welding cracks. Many factors influence the quality and mechanical properties of a joint. The most significant of these is the appropriate selection of welding parameters, which should be determined precisely and separately for each type of sheet, depending on its thickness and geometric features. The aim of the present article is to study the influence of main TIG (Tungsten inert gas) welding parameters on the creation of proper joints used in the construction of mobile truck platforms or tank trucks. The proper selection of parameters enables the production of welds with good functional properties. A novelty of this article is the proposal to weld each layer of a thick joint with different parameters, which has an important influence on the mechanical properties of the joint. It is expected that the new material and technological solution will yield a joint with good corrosion resistance and increased mechanical properties. This is important in the responsible construction of means of transport, using the example of mobile platforms and tank trucks. Different tests verifying the properties of joints, including non-destructive testing, tensile strength tests, and fatigue tests, as well as a hardness probe, were applied.
    Źródło:
    Transport Problems; 2022, 17, 4; 91--102
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Plasticity properties of advanced high-strength steel weld construction of transport means - simulation by the MESH-free method
    Autorzy:
    Szczucka-Lasota, Bożena
    Uściłowska, Anita
    Węgrzyn, Tomasz
    Łazarz, Bogusław
    Powiązania:
    https://bibliotekanauki.pl/articles/2203909.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    civil engineering and transport
    AHSS steel welding
    bending test
    metallographic structure
    mechanical resistance
    method of fundamental solutions
    inżynieria lądowa i transport
    spawanie stali AHSS
    próba zginania
    struktura metalograficzna
    odporność mechaniczna
    metoda rozwiązań podstawowych
    Opis:
    Advanced high-strength steel (AHSS) is being used increasingly often in the structure of means of transport. Welds made of these steels can crack in the heat-affected zone (HAZ) and have inferior mechanical properties compared to the base material. The goal of this paper was to solve the technological and material problem of obtaining highstrengh thin-walled welded structures of AHSS steel designed for heavily loaded elements of transport means. The novelty of the article is its presentation of a modified welding process which enables a high-strength structure of the obtained joint to be obtained without welding defects and incompatibilities. Copper backing was selected as an effective method of heat dissipation in the process, and, using the basic solutions method, the leverage of a heat flow process in the weld method deposit (WMD) was checked after cooling down the substrate. The fundamental solutions method was used to determine the optimal shape of the backing. It has been shown that the new backing affects the structure and mechanical properties of welds. In order to verify the newly developed method, tensile tests of the obtained joint were carried out, the hardness was assessed, the metallographic structure was analyzed, and non-destructive tests were performed. The developed material and technological solution were used, for example, for the construction of the arm element of the mobile platform.
    Źródło:
    Transport Problems; 2022, 17, 3; 39--50
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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