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Wyszukujesz frazę "thermal cycling" wg kryterium: Temat

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Comparative analysis of effect of thermal shock on adhesive joint strength
    Autorzy:
    Kłonica, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/102842.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    adhesive joint
    epoxy adhesive
    thermal cycling
    Opis:
    The aim of this study was a comparative analysis of static shear strength of single-lap adhesive joints of 316L steel adherends, measured prior to and after mechanical treatment with a P320 grit coated abrasive tool. The study was of comparative nature and focused on adhesive joints subjected to thermal cycling. The tests were carried out on joints bonded with Epidian 5 and Epidian 6 epoxy adhesives hardened with Z1 and PAC curing agents. The static shear strength tests results of single-lap adhesive joints were analysed with regard to different surface treatment variants. The scope of tests covered a relatively short fatigue cycle, i.e. 200 cycles in the range of temperatures between -40o C and +60o C. This paper includes the surface free energy and selected surface roughness parameters of substrates and images showing the surface of adherends before and after mechanical treatment with P320 grit coated abrasive tool.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 32; 263-268
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of thermal cycling on the tensile behavior of Cf/Al fiber metal laminates
    Autorzy:
    Noor, M. F.
    Pasha, R. A.
    Wakeel, A.
    Nasir, M. A
    Bilal, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/102771.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    composite material
    aluminum
    anodizing process
    carbon fiber
    thermal cycling
    tensile strength
    Opis:
    The objective of this research work was to estimate the effect of thermal cycling on the tensile behavior of CARALL composites. Fiber metal laminates (FMLs), based on 2D woven carbon fabric and 2024-T3 Alclad aluminum alloy sheet were manufactured by pressure molding technique followed by hand layup method. Before fabrication, aluminum sheets were anodized with phosphoric acid to produce a micro porous alumina layer on surface. This microporous layer is beneficial to produce a strong bond between the metal and fiber surfaces in FMLs. The effect of thermal cycling (-65 to +70ºC) on the tensile behavior of Cf/Al based FML was studied. Tensile strength was increased after 10 thermal cycles, but it was decreased slightly to some extent after 30 and 50 thermal cycles. Tensile modulus also show similar behavior as that of tensile strength.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 3; 80-86
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Functional plasma-deposited coatings
    Autorzy:
    Pashechko, M.
    Kindrachuk, M.
    Gumeniuk, I.
    Tisov, O.
    Zahrebelniy, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/957956.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    plasma deposition
    coating
    laser treatment
    thermal cycling
    mass transfer
    adhesion
    wear resistance
    Opis:
    The paper focuses on the problem of low adhesion of plasma sprayed coatings to the substrate. The subsequent laser treatment modes and their influence on the coating-substrate interface were studied. This allows to decrease the level of met-stability of the coating, thus decreasing its hardness down to 11–12 GPa on the surface and to about 9 GPa on depth of 400 μm. The redistribution of alloying elements through solid and liquid diffusion improves mechanical properties and rises the adhesion up to 450 MPa after remelting and up to 90–110 MPa after laser-aided thermal cycling. At the same time, remelting of coating helps to decrease its porosity down to 1%. The obtained complex of properties also allows to improve wear resistance of coatings and to decrease friction factor.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 4; 301-304
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stress evolution mechanism and thermo-mechanical reliability analysis of copper-filled TSV interposer
    Autorzy:
    Chen, Yuan
    Su, Wei
    Huang, Hong-Zhong
    Lai, Ping
    Lin, Xiao-ling
    Chen, Si
    Powiązania:
    https://bibliotekanauki.pl/articles/1841909.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    through silicon vias
    thermo-mechanical reliability
    failure mechanism
    finite element analysis
    3D integrated packaging
    thermal cycling experiment
    Opis:
    Through silicon via (TSV) has become one of the key emerging trends of three-dimensional (3D) packages, as it can realize vertically interconnect between stacked-dies. Due to large mismatch in thermal expansion coefficients (CTE) between the copper via and the silicon, significant mechanical stresses are induced at the interfaces when TSV structure is subjected to thermal stresses, which would greatly affect the reliability and electrical performance of TSV 3D device. In this paper, the relationship between the state of stresses and failure of TSV had been explored by combining finite element model simulation (FEM) and failure physical analysis. The position of the maximum stress of the TSV structure was obtained by FEM analysis. The relationship of stress and displacement change with temperature was also studied. And a thermal cycling experiment was conducted to validate the simulation results. Physical failure analysis after thermal cycling experiment was used to verify the degradation mechanism predicted by thermo-mechanical simulation.
    Źródło:
    Eksploatacja i Niezawodność; 2020, 22, 4; 705-714
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative Tests of Shear Strength of Adhesive Lap Joints after Thermal Shocks
    Autorzy:
    Kłonica, Mariusz
    Bielawski, Radosław
    Żokowski, Mariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2023325.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    surface roughness
    surface layer
    thermal cycling
    adhesive joint
    316L steel
    chropowatość powierzchni
    warstwa powierzchniowa
    cykle termiczne
    spoina klejowa
    stal 316L
    Opis:
    This work presents the results of comparative tests for the determination of Young’s modulus and the static shear strength of adhesive lap joints, based on grade 316L steel. The tests also concerned the determination of the glass transition temperature of a certain adhesive composition: Epidian 57 epoxy resin with a 10% Z1 hardener content. The paper shows the test results for the surface free energy and selected surface roughness parameters, including photographs of the test specimens after destructive testing. The tests were comparative and performed on adhesive joints, with and without exposure to thermal cycling. The scope of the testing included a relatively short thermal cycling run of 500 cycles with a temperature variation of -40°C to +60°C. An analysis was carried out of the results from testing the static shear resistance of specimens manufactured using various methods of adhesive joint seasoning. The experimental test results were statistically processed in compliance with good research practice.
    Źródło:
    Advances in Science and Technology. Research Journal; 2021, 15, 4; 364-375
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of temperature and aging on polarization mode dispersion of tight-buffered optical fibers and cables
    Autorzy:
    Borzycki, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/309050.pdf
    Data publikacji:
    2005
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    single mode optical fiber
    polarization mode dispersion
    environmental testing
    tight buffered fiber
    optical fiber cable
    optical ground wire
    thermal cycling
    accelerated life test
    Opis:
    This paper presents results of laboratory tests investigating influence of temperature on polarization mode dispersion (PMD) in variety of single mode optical fibers and cables. Research was focused primarily on tight-buffered fibers, where most pronounced effects resulting from buffer shrinkage or expansion were expected. The goal was to verify performance of optical fiber cable exposed to extreme temperatures and to compare behavior of different cables. Very strong temperature dependence of PMD was detected in standard single mode fibers with 0.9 mm tight buffer, commonly used in indoor cables, and in complete cable with such fiber. However, both nonzero dispersion-shifted fibers, spun during drawing and optical unit used in optical ground wire (OPGW), where 12 fibers are stranded showed good stability of PMD during thermal cycling. The same optical unit extracted from OPGW exhibited excellent PMD stability also during accelerated life test.
    Źródło:
    Journal of Telecommunications and Information Technology; 2005, 3; 96-104
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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