Yazar "Eşme, Uğur" seçeneğine göre listele

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    Öğe
    An Investigation of Effect of High Temperature Environmental to Fatigue Life of Cutting Steels
    (Çukurova Üniversitesi, 2018) Özgün, Rahim; Köse, Ercan; Külekçi, Mustafa Kemal; Eşme, Uğur; Öcalır, Şeref
    In this study, effects of high temperature environmental to fatigue life have been investigated in cutting steels. For this purpose, fatigue testing machine of micro controller was designed for cylindrical material. The samples which were produced from cutting steels had been kept in high temperature (900 ºC) for 3 hours. Effects of high temperature to fatigue life have been investigated by exposing the samples kept and non-kept in high temperature to fatigue test for different tensiles in designed and produced machine. As result of experiments, it has been observed that the high temperature environment has reduced fatigue resistance in cutting steels. Besides, it was determined that pore intensity of samples kept in high temperature environment increased when the photographs taken from scanning electron microscope (SEM) were investigated.
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    Öğe
    Investigation of Milling Process Parameters for the Optimization of Surface Roughness of EN AW 5754 (AlMg3) Aluminum Alloy
    (Çukurova Üniversitesi, 2017) Kulekci, Mustafa Kemal; Eşme, Uğur; Ekşi, Abdul Kadir; Koçoğlu, Zülfü; Yılmaz, Necip Fazıl
    In this study, the effects of milling process parameters; such as feed rate, revolution per minute, chip thickness and radius of cutting tool on surface roughness experimentally investigated. Experiments performed using the parameters in the range of 1330-1500 rpm rotating speed, 97-196 mm/min feed rate, 1-2mm radius cutting tool tip, 1-1,5mm chip thickness. Diesel fuel was used as a lubricant oprevent adhesion of the chip to the machined surface. Optimum surface roughness results were obtained with increasing the radius of cutting tool. The results of the study reveal that cutting parameter optimization is needed to obtain required surface roughness.