Yazar "Ozdemir, Mehmet Tayyip" seçeneğine göre listele

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    Studies on energy consumption and other important machining characteristics in sustainable turning of EA1N railway axle steel
    (Springer London Ltd, 2024) Dincsoy, Mehmet; Korkmaz, Mehmet Erdi; Gupta, Munish Kumar; Ozdemir, Mehmet Tayyip; Gunay, Mustafa; Demirsoz, Recep
    The present research focuses on comprehensively evaluating energy consumption and other vital machining characteristics during the turning process, aiming to optimize efficiency while minimizing environmental impact. The experimental data is collected through a series of machining tests on EA1N railway axle steel under dry, minimum quantity lubrication (MQL), and cryogenic cooling conditions. Under these cutting conditions, the machinability criteria (energy consumption, tool wear, surface quality, chip morphology) of train wheel axle steel were tried to be improved. As a result, cryogenic cooling at constant cutting speed gave 40% and 53% better results in terms of energy consumption than MQL and dry environment, respectively. When the same situation was examined in terms of tool wear and surface quality, 10-18% and 8-14% gave better results, respectively. In other words, it is worthy to mention that the research findings not only benefit the manufacturing industry by optimizing resource utilization but also align with global efforts to promote environmentally conscious practices in the engineering and transportation sectors.
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    Wear performance of Ti-6Al-4 V titanium alloy through nano-doped lubricants
    (Springernature, 2023) Etri, Hamza E. L.; Singla, Anil Kumar; Ozdemir, Mehmet Tayyip; Korkmaz, Mehmet Erdi; Demirsoz, Recep; Gupta, Munish Kumar; Krolczyk, J. B.
    Titanium and its alloys are widely utilized in the biomedical sector, they still exhibit poor tribological properties and low wear resistance when employed against even weaker substances. The poor hardness, instability, high coefficient of friction, low load-carrying capacity, and insufficient resistance to not only abrasive but also adhesive wear are further disadvantages of titanium alloys. The focus of this investigation is on the tribological performance of Ti-6Al-4 V alloy in contact with WC carbide abrasive balls when subjected to nanodoped cooling and lubrication conditions. Tribological experiments were executed on Ti-6Al-4 V flat samples using a ball-on-flat tribometer in dry hybrid graphene/boron nitride combination nanoparticles (MQL, nano-3), nanographene with MQL (nano-1), and boron nitride with MQL (nano-2) conditions. After that, the most significant tribological characteristics were investigated, including volume loss, friction coefficient, wear rate, and micrographic structures. The outcomes also demonstrated that the hybrid nanoparticle situation experienced the least amount of volume loss.