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Wyszukujesz frazę "mechanical joining" wg kryterium: Temat

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    Wyświetlanie 1-6 z 6
    Tytuł:
    What if they are not weld-able?
    Autorzy:
    Zhang, H.
    Jayatissa, A. H.
    Durbin, S.
    Ma, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/407437.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hybrid mechanical joining
    friction stir welding
    riveting
    magnesium
    aluminum
    Opis:
    Many light metals, such as aluminum and magnesium alloys, are promised to provide significant weight reduction for automobiles. However, the difficulties in welding these metals seriously hinder their large-scale applications. A new, hybrid mechanical joining process is proposed to avoid the inherited metallurgical complications in welding. By spinning and pressing a solid rivet into the metals, a joint is formed with the locking from the rivet, a stirred/mixed zone around the rivet, and solid bonding at the faying interface. This riveting process combines the actions of friction-stir welding in which metals of difierent sheets are mechanically mixed, and self-piercing riveting process which embeds a rivet in the sheets. Experiments have shown that such a friction-stir riveting process can produce joints of comparable strength to those created by other joining means, and can be applied to dififcult-to-weld metals and dissimilar metals, such as aluminum-to-aluminum, magnesium-to-magnesium, and aluminum-to-magnesium.
    Źródło:
    Management and Production Engineering Review; 2012, 3, 3; 86-91
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Joining by upset bulging – tooling design and new concepts for online process control using servo presses and local heating
    Autorzy:
    Sviridov, A.
    Grützner, P.
    Rusch, M.
    Bambach, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/99672.pdf
    Data publikacji:
    2017
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    tube forming
    mechanical joining
    upset bulging
    local heating
    servo press
    Opis:
    Conventional fusion-welding techniques pose limitations in modern multi-material assemblies due to the heat input. The negative influence of the heat-affected zone on the material properties must be avoided particularly in high-strength steels. During mechanical joining processes, which may also be used for joining of different materials e.g. steel and aluminium, high-performance joints can be produced without degradation of the material properties. Joining by upset bulging is an innovative joining method based on plastic buckling of tubes under axial compression. In previous investigations of joining by upset bulging the process parameters were determined and joints of tubes with sheet metal were tested under static and dynamic loads. The results of these studies have shown that the process of upset bulging has a large potential for the production of joints of tubes with sheets and plates. The present paper focuses on the tooling concepts for an efficient use of the technology and describes methods to control the forming and joining process. Two aspects are covered: (i) the application of servo-presses for joining by upset bulging and their possibilities for on-line process control, (ii) a moderate, process-integrated local heating of the forming area to avoid the formation of cracks and to further increase the strength of the joints.
    Źródło:
    Journal of Machine Engineering; 2017, 17, 1; 78-87
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The structure of the strength of riveted joints determined in the lap joint tensile shear test
    Autorzy:
    Mucha, J.
    Witkowski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/387206.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    riveted joints
    mechanical joining
    sheets joining
    shearing test
    joint strength
    połączenia nitowe
    połączenia mechaniczne
    test wytrzymałości
    stopy aluminium
    Opis:
    The article presents the analysis of the structure of the load capacity of riveted joints. For the four joining systems the lap joint specimens were made and tested in the shearing test. The joints were prepared for the three combinations of the DC01 steel and EN AW- 5754 aluminium alloy sheets with the thickness of 2mm. On the basis of the obtained load-elongation diagram tensile shear test curves, the basic parameters defined in the ISO/DIS 12996 standard were determined. In the case of the conventional riveted joints the maximum load capacity of the joint is determined by the strength of the fastener. For the joints with aluminium-steel blind rivet , the load capacity of the joint was on the strength limit of the rivet tubular part and on the strength limit of the sheet material. The strength of the SSPR joint is determined by the mechanical properties of the material of the joined sheets. From all sheets and rivet specimens arrangements the highest load capacity of the joint was obtained for the DC01 sheet material joints, and the lowest load capacity of the joint was obtained for the EN AW-5754 sheet material joints.
    Źródło:
    Acta Mechanica et Automatica; 2015, 9, 1; 44-49
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental Study on the Riveted Joints in Glass Fibre Reinforced Plastics (GFRP)
    Autorzy:
    Bielawski, R.
    Kowalik, M.
    Suprynowicz, K.
    Rządkowski, W.
    Pyrzanowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/139928.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    laminates
    mechanical properties
    damage mechanics
    mechanical testing
    riveted joint
    mechanical joining
    laminaty
    właściwości mechaniczne
    mechanika uszkodzeń
    badania mechaniczne
    złącze nitowane
    łączenie mechaniczne
    Opis:
    The aim of the paper is to validate the use of measurement methods in the study of GFRP joints. A number of tests were carried out by means of a tensile machine. The studies were concerned with rivet connection of composite materials. One performed two series of tests for two different forces and two fibre orientations. Using Finite Element Method (FEM) and Digital Image Correlation (DIC), strain maps in the test samples were defined. The results obtained with both methods were analysed and compared. The destructive force was analysed and, with the use of a strain gauge, the clamping force in a plane parallel to the annihilated sample was estimated. Destruction processes were evaluated and models of destruction were made for this type of materials taking into account their connections, such as riveting.
    Źródło:
    Archive of Mechanical Engineering; 2017, LXIV, 3; 301-313
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary studies of riveted joints at feed force
    Autorzy:
    Bielawski, R.
    Kowalik, M.
    Rządkowski, W.
    Pyrzanowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/102917.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    laminates
    damage mechanics
    mechanical testing
    joints
    joining
    Opis:
    The aim of the study was to determine the feasibility of riveted joints in composites materials. Static tensile test method was used. In the test one type of glass fabric was used (Interglas 92140) from which two types of composite samples were prepared. In each sample the same type of fiber with the same fiber orientation – 3 layers - was used. The samples had dimensions of 100×100 mm and thickness of approximately 1 mm. The composite probes were located in a metal frame with a screw connection which was made of screws with nominal thread pitch M5. Screws were tightened with constant torque. It was to provide an axial force to the sample during the tensile test. The frame was placed between cross-bars of tensile machine INSTRON 8516. The samples were stretched at a speed of 0.05 mm/s at a distance up to 15 mm. During the tensile test displacement of the samples and pull force were registered. Depending on the fibre orientations and the value of feed force, damage models were described. On the basis of the results the possibility of usage of aluminium rivet nuts connections in composite materials was determined.
    Źródło:
    Advances in Science and Technology. Research Journal; 2015, 9, 27; 23-27
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of the Use of Fasteners with Different Stiffness in Hybrid Joints Subjected to Complex Mechanical Loads
    Autorzy:
    Sadowski, T.
    Nowicki, M.
    Golewski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/354292.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hybrid joining
    fasteners
    adhesive
    mechanical loads
    numerical modelling
    Opis:
    To this day, most of the papers related to hybrid joints were focused on single and double lap joints in which shear deformation and degradation was the dominant phenomenon. However, in real constructions, complex state of loads can be created by: a) torsion with shear, b) bending with shear, c) torsion with tensile. Analytical and numerical computation for simple mechanical joints is known, however, the introduction of an adhesive layer to this joint makes the load transferred both through: (1) the adhesive and (2) mechanical fasteners. There is also an interaction between the amount and stiffness of mechanical fasteners and the strength of the adhesive layer. The paper presents the results of numerical calculations for the bending with shear type of load for the hybrid structural joint and corresponding simple joints by: (1) pure adhesion and (2) rivets with different quantity maintaining the same cross-sectional area. A total of 9 simulations were performed for: (1) 4 types of pure rivets connections, (2) pure adhesive joint and (3) 4 kinds of hybrid joints. The surface-based cohesive behavior was used for creation of the adhesive layer, whereas the rivets were modelled by connector type fasteners, which simplify complexity of the numerical model. The use of connectors allowed for effort assessment taking into account damage in both types of connections. Application of connector elements can be useful for larger structures modelling, e.g. aircraft fuselage, where the number of mechanical joints is significant and complex load conditions occur.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 4; 1263-1268
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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