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    Wyświetlanie 1-5 z 5
    Tytuł:
    Impact of Assembly Method on the Strength of Single-Lap Joints of Aircraft Aluminum Alloy Sheets
    Autorzy:
    Miturska, Izabela
    Powiązania:
    https://bibliotekanauki.pl/articles/103043.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    adhesive joints
    rivet joints
    hybrid joints
    epoxy adhesive
    aluminium sheets
    połączenia klejone
    połączenia nitowe
    połączenia hybrydowe
    klej epoksydowy
    blachy aluminiowe
    Opis:
    The paper presents a comparative analysis of the strength properties of single-lap assembly joints. Single-lap joints are commonly used in various structures because of their strength properties. Three types of joints, widely used in modern structures, were prepared and tested: adhesive, rivet, and hybrid adhesive-rivet joints. The experiments were carried out using aluminum alloy EN AW-2024, a structural material used in aviation. In the adhesive joints, the substrates were joined using a two-component epoxy adhesive composed of Epidian 53 epoxy resin and polymide curing agent (PAC) – Epidian 53/PAC/100:80. The rivet joints were formed using steel-aluminum blind rivets. The rivets were arranged in four different configurations. One of the very important structural factors considered when designing single-lap assembly joints is overlap length. In the present study, two overlap lengths were tested: 12 mm and 20 mm. The assembly joints were subjected to strength tests. Tensile-shear strength was determined. The results were analyzed statistically.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 2; 163-170
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Hard Facing Material Designed for Application on the Forestry Tools
    Autorzy:
    Ťavodová, Miroslava
    Hnilicová, Michaela
    Miturska, Izabela
    Powiązania:
    https://bibliotekanauki.pl/articles/102164.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    hard facing
    forestry tools
    abrasive wear
    microscopy analyses
    hardness
    utwardzanie
    narzędzia leśne
    zużycie ścierne
    analiza mikroskopowa
    twardość
    Opis:
    The article deals with the assessment specific hard facing material with W2C high content – filled welding rod for manual flame hard facing RD 571. Is was applied in two layers on the samples (16MnCr5 steel) of the tool for crushing undesirable advance growths, frequently used in forestry technologies. The tools work in a heterogeneous environment. They are loaded by abrasive impression of wood mass, which are characterized by various hardness. The material loss on the functional parts is significant. The wear degradation of the tool and its subsequent early decommissioning represents economic losses for forest companies. The investigations conducted under laboratory conditions involved hardness measuring HV10 and HRC, wear resistance testing of materials by friction against loosely fixed abrasive parts, with assessment profile and depth of the mark as well as assessment of quality mixing of the layers, microstructure assessment by SEM with EDX analyses. By evaluating the laboratory tests, the conclusions were drawn to determine the suitability or the non-suitability of the selected hardfacing material in service. Whether the material increases the service life of the undesirable crusher tool, will by verified by performing field trials.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 4; 111-119
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strength of Assembly Butt Joints of Plastic Pipes
    Autorzy:
    Miturska, Izabela
    Rudawska, Anna
    Brunella, Valentina
    Powiązania:
    https://bibliotekanauki.pl/articles/102688.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    adhesive
    welding
    sleeve joints
    permanent joint
    klej
    spawanie
    połączenia tulejowe
    połączenia trwałe
    Opis:
    The aim of the study was to compare the welded and adhesive joints made of polypropylene pipes. The pipes were butt jointed. Two pipe diameters were used: ø20 mm and ø25 mm. The welded joints were made by hot gas welding, while the adhesive joints were made by two epoxy adhesive compositions. The base for both compositions was Epidian 6 epoxy resin, which was mixed with IDA and TFF curing agents in the recommended quantitative ratios. The experimental tests consisted in determination and comparison of the strength properties of the made joints; therefore, the analyzed joints were subjected to the destructive strength tests, which determined their tensile strength in accordance with the ISO 527–1 standard. On the basis of the obtained results, it was observed that welded joints obtained the highest average strength. The lowest strength was characteristic for the adhesive joints made with Epidian 6/TFF/100:27 adhesive. The obtained results were subjected to a statistical analysis, which showed that the strength of ø20 mm diameter pipe joints did not differ significantly from the strength of ø25 mm diameter pipe joints, comparing the results for each type of joint with the assumed level of confidence α = 0.05.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 1; 10-17
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analyses of calcium influence on the AlSi9CuMnNi alloy
    Autorzy:
    Náprstková, Nataša
    Kraus, Pavel
    Cais, Jaromír
    Stančeková, Dana
    Miturska, Izabela
    Powiązania:
    https://bibliotekanauki.pl/articles/957898.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    alloy
    modification
    calcium
    machining
    chip
    stop
    modyfikacja
    wapń
    obróbka
    żeton
    Opis:
    Treatment of metal alloys is one of the ways to affect the properties of the material. The article describes an experiment realized at FPTM UJEP when was experimentally studied the influence of alloys AlSi9CuMnNi calcium modification on some of its properties. The alloy was modified with various amounts of calcium and subsequently machining. Also hardness was measured in the resulting alloys. Machining was performed under certain cutting conditions. After machining the obtained chip was evaluated. Chip was evaluated for its shape, length and amount of chips per 100 g. Devices in FPTM laboratories were used to prepare experimental casts and to evaluate hardness and chips, like the melting furnace LAC K70/13, hardness tester Ernst AT 250X or microscope Olympus SZX 10. Experimental quantities of calcium was 0.05, 0.1 and 0.15 wt. %. Presented experiments are part of the extensive research undertaken at Faculty of Production Technologies and Management at Jan Evangelista Purkyně University in Ústí nad Labem.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 3; 32-38
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selected strength aspects of adhesive lap joints and butt welded joints of various structural materials
    Autorzy:
    Rudawska, Anna
    Niedziałkowski, Paweł
    Miturska, Izabela
    Szabelski, Jakub
    Grzesiczak, Dominik
    Powiązania:
    https://bibliotekanauki.pl/articles/102735.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    adhesive joints
    welded joints
    tensile strength
    MIG/MAG
    failure load
    połączenia klejowe
    połączenia spawane
    wytrzymałość na rozciąganie
    Opis:
    The present paper evaluates the effect of joining method on the strength of joint assemblies of selected structural materials: DX51+Z275 galvanised steel, OH18N9 stainless steel and DC01 low carbon steel. The objects of the study are: the lap adhesive joint and the butt welded joint with continuous and spot weld. Welded joints were produced latter by means of one of the two welding methods, MIG or MAG. The choice of the welding method depended on the type substrate material. Welding was conducted at the following constant technological parameters: strength of current, electrode deposition rate, filler metal diameter, type and flow rate of shielding gas. The adhesive joint was bonded with Epidian 53/Z1/100:10 epoxy adhesive. The substrates were pre-treated in a three-stage surface preparation process involving: mechanical treatment with P60 and P320 abrasive tools and degreasing with Loctite 7063 degreasing agent. The tensile strength tests, conducted under the study, provided strength characteristics of the tested joint assemblies, indicating differences in the values of strength that depended on the applied joining method or, in the case of welded joints, the structure of the seam.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 1; 135-141
    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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