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    Wyświetlanie 1-5 z 5
    Tytuł:
    Identifying Optimal Friction Stir Welding Process Parameters for 2024 Al Alloy Butt Joints
    Autorzy:
    Kluz, Rafał
    Bucior, Magdalena
    Kubit, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/102056.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    design of an experiment
    friction stir welding
    aluminum alloy
    projekt eksperymentu
    zgrzewanie tarciowe
    stop aluminium
    Opis:
    Friction stir welding (FSW) is a solid state joining process used to join metals and their alloys. The main goal of this paper was to select the optimal welding parameters such as: rotational speed and the feed rate of the tool. The article presents the results of the tests on welding 1 mm thick 2024 aluminum sheet according to the statistical 3-level completed plan PS/DK 32. The rotational speed of the tool varied within the range of 1100–1300 rpm and the feed rate within the range of 40–60 mm/min. For these parameters, the analyses of the experiment repeatability, impact significance and adequacy of equations were conducted.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 4; 48-53
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the Possibilities of Improving the Selected Properties Surface Layer of Butt Joints Made Using the FSW Method
    Autorzy:
    Bucior, Magdalena
    Kluz, Rafał
    Kubit, Andrzej
    Ochał, Kamil
    Powiązania:
    https://bibliotekanauki.pl/articles/103057.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    śrutowanie
    zgrzewanie tarciowe z przemieszaniem
    2024
    stop aluminium
    shot peening
    FSW (friction stir welding)
    aluminum alloy
    Opis:
    The paper presents the results pertaining to an analysis on the influence of technological parameters of pneumatic shot peening technology on the selected properties of a surface layer of butt joints made with Friction stir weld‑ ing (FSW) method. Butt joints made of two 2024‑T3 aluminum alloy sheets with the thickness of 1 mm were shot peened with glass beads. The experiments were carried out according to the statistical 3‑level completed plan PS/DC 32 . The technological parameters were changed in the range: pressure p = 0.4–0.6 MPa and peening time t = 1–3 min. As a result of the conducted research, adequate equations describing the effect of the analyzed parameters on the surface roughness were obtained. Shot peening with glass beads significantly reduced the sur‑ face roughness from Ra = 5.2 µm to Ra = 1.42 µm. This treatment provides high compressive residual stresses and the increase of the surface layer hardness. The results show that shot peening is a highly efficient and cost‑effective mechanical treatment used for improving the mechanical properties of the butt joints made with the FSW method.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 1; 1-9
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Brushing on Residual Stress and Surface Roughness of EN AW-2024-T3 Aluminum Alloy Joints Welded Using the FSW Method
    Autorzy:
    Bucior, Magdalena
    Kluz, Rafał
    Kubit, Andrzej
    Ochał, Kamil
    Powiązania:
    https://bibliotekanauki.pl/articles/2201870.pdf
    Data publikacji:
    2023
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    brushing
    aluminum alloy
    friction stir welding
    FSW
    surface roughness
    residual stress
    Opis:
    This article presents the influence of the brushing process on residual stress and surface roughness of EN AW-2024-T3 aluminum alloy joints welded using the Friction Stir Welding (FSW) method. Butt joints with thicknesses of 2 mm were brushing with using ceramic brush. The aim of the study was to find optimal parameters of the brushing process, which would significantly improve the functional properties of welded joints. The experiments were carried out in two steps. In the first stage of the research, the feed rate was changed in the range f = 40 ÷ 120 mm / min with a constant brushing depth d = 0.5 mm. The roughness decreased from Sa = 5.285 µm for the specimen after welding to Sa = 2.460 µm for the f = 120 mm/min and d = 0.5 mm. The change in the parameters of the brushing process did not have a significant impact on the state of residual stresses. Hence, in the second step, the brushing depth was increased in steps of 0.1 mm. The best properties were obtained for f = 120 mm / min and d = 0.6 mm (variant 6A), where roughness was Sa = 0.443 µm and compressive stresses σ = -118 MPa.
    Źródło:
    Advances in Science and Technology. Research Journal; 2023, 17, 1; 86--93
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental Research of the Weakening of the Fuselage Skin by RFSSW Single Row Joints
    Autorzy:
    Kubit, Andrzej
    Bucior, Magdalena
    Kluz, Rafał
    Bochnowski, Wojciech
    Perłowski, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/102400.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    RFSSW
    welding
    thin-walled structures
    pressurization
    microstructure analysis
    spawanie
    struktury cienkościenne
    zwiększanie ciśnienia
    analiza mikrostruktury
    Opis:
    The paper presents the results of experimental investigations, the aim of which was to determine the degree of weakening of skin sheet of the thin-walled structure through a single-row welded joints made by Refill Friction Stir Spot Welding (RFSSW) technology. At the beginning, a short metallographic analysis of the weld was carried out, defining the characteristic areas of the microstructure. Then, comparative tests were carried out on the thin-walled structure sample in the form of a single-row skin-stringer joint. The structures made with the discussed technology of welding were compared with the traditionally joined structure by riveting. It has been shown that in the case of the welded structure, the skin sheet is weakened by more than 6% to a lesser extent than in the case of riveted. However, it was shown that the cracking path in the tensiled welded sheet runs along an unpredictable path, deviating from the line marked by the welds’ row. While in the case of riveted joint the cracking propagation along the row of rivets was revealed. The analyzes of fracture surfaces for both cases using scanning electron microscopy were also undertaken, thus undertaking preliminary considerations on the mechanism of fracture.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 3; 90-97
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Nanofillers on the Mechanical Properties of Vinyl Ester Resin Used as a Carbon Fiber Reinforced Polymer Matrix
    Autorzy:
    Kubit, Andrzej
    Bucior, Magdalena
    Kluz, Rafał
    Ochałek, Krzysztof
    Burnat, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/2201802.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    composites
    nanofillers
    vinyl ester resin
    nano-reinforced polymers
    reinforced polymer
    Opis:
    This article presents the results of research aimed at determining the influence of selected nanofillers of vinyl ester resin on the mechanical properties of the cured resin. The influence of the resin with nanofillers as a matrix on the properties of the unidirectional CFRP composite was also investigated. Graphite, silicon oxide and titanium dioxide nanopowders were used as resin nanofillers. Each of the fillers was considered in two different contents, i.e. 1 wt.% and 2 wt.%. The variants with such nanofillers content were compared with the unfilled reference variant. The uniaxial tensile strength tests of the resin samples were carried out, showing the possibility of increasing the strength by 19.35% for the variant 1 wt.% of silica nanopowder content. For CFRP composites, the possibility of increasing the strength in the three-point bending test by 25.57% due to the use of a matrix reinforced with graphite nanopowder with a content of 1 wt.% was demonstrated. Based on the analysis of fracture surfaces performed using SEM microscopy, it was shown that the fillers used lead to a significant improvement in the adhesion of the matrix to the composite fibers.
    Źródło:
    Advances in Science and Technology. Research Journal; 2022, 16, 4; 10--21
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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