Yazar "RTEÜ, Mühendislik ve Mimarlık Fakültesi, Makine Mühendisliği Bölümü" için Mühendislik Fakültesi listeleme
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Effect of double cross sectional ratio on performance characteristics of pulsating heat pipes
Markal, Burak; Candere, Ayşe Candan; Avcı, Mete; Aydın, Orhan (Elsevier, 2021)Effect of double cross sectional ratio on performance characteristics of pulsating heat pipes is experimentally investigated. The cross sectional ratios in the evaporator and condenser sides are different from each other, ... -
Effect of fin width ratio on thermal performance of fin based-heat sink with phase change materials
Yazıcı, Mustafa Yusuf; Avcı, Mete; Aydın, Orhan; Arshad, Adeel; Jabbal, Mark (Elsevier, 2023)The rapid development of electronics, coupled with need of miniaturization in the design and manufacture, makes heat dissipation, which is critical for the performance, lifetime, and reliability of the components extremely ... -
Effect of gradually expanding flow passages on flow boiling of micro pin fin heat sinks
Markal, Burak; Kul, Beyzanur; Avcı, Mete; Varol, Ramazan (Elsevier, 2022)In this paper, effect of gradually expanding flow passages on saturated flow boiling characteristics of micro pin fin heat sinks is experimentally investigated. In this regard, a comparative analysis is performed based on ... -
Effect of grain refinement with titanium on the microstructure, mechanical and corrosion properties of Al-25Zn alloy
Hekimoğlu, Ali Paşa; Çalış, Merve (Gazi Univ, Fac Engineering Architecture, 2020)In this study, one binary Al-25n alloys and eleven ternary aluminum-zinc-titanium alloys, Al-25Zn-0.01Ti, Al-25Zn-0.03Ti, Al-25Zn-0.04Ti, Al-25Zn-0.05Ti, Al-25Zn-0.075Ti, Al-25Zn-0.1Ti, Al-25Zn-0.2Ti, Al-25Zn-0.4Ti, ... -
Effect of heat treatment on mechanical and wear properties of Zn-40Al-2Cu-2Si alloy
Savaşkan, Temel; Azaklı, Zeki; Hekimoğlu, Ali Paşa (Elsevier, 2021)In order to determine the effect of heat treatment on the mechanical and wear properties of Zn-40Al-2Cu-2Si alloy, different heat treatments including homogenization followed by air-cooling (H1), homogenization followed ... -
Effect of hexagonal boron nitride (h-BN) addition on friction behavior of low-steel composite brake pad material for railway applications
Yanar, Harun; Pürçek, Gençağa; Demirtaş, Muhammed; Ayar, Hasan Hüseyin (Elsevier, 2021)In this study, low-steel composite friction materials containing different amount of h-BN were developed for railway vehicles. Addition of h-BN has no considerable effect on mechanical properties of the matrix structure. ... -
Effect of hydraulic diameter on flow boiling in rectangular microchannels
Markal, Burak; Aydın, Orhan; Avcı, Mete (Springer, 2019)An experimental study is conducted to investigate the effect of hydraulic diameter on the saturated flow boiling characteristics of deionized water in parallel rectangular microchannels. Experiments have been performed for ... -
Effect of inlet temperature on flow boiling behavior of expanding micro-pin-fin type heat sinks
Markal, Burak; Evcimen, Alperen; Aydın, Orhan (Elsevier, 2023)Heat sinks that cool electronic systems through flow boiling are exposed to working fluids at different inlet temperature. Therefore, in the present study, influence of inlet temperature on boiling performance of a ... -
Effect of isothermal treatment on mechanical and tribological properties of alloy Zn – 40% Al – 2% Cu – 2% Si
Savaşkan, Temel; Hekimoğlu, Ali Paşa; Azaklı, Zeki (Springer, 2023)The effect of isothermal exposure at temperatures from 100°C to 250°C for 8 hours on the structure, mechanical and tribological properties of the Zn – 40% Al – 2% Cu – 2% Si alloy produced by chill casting is studied. The ... -
Effect of laminar airflow unit diffuser size on pathogen particle distribution in an operating room
Ağırman, Aleyna; Çetin, Yunus Emre; Avcı, Mete; Aydın, Orhan (Taylor & Francis Inc, 2020)Operating room ventilation is quite important to protect patients from infection risk inside a surgical field. the laminar flow units (LAF) used in these applications contribute to removal of pathogen particles from the ... -
The effect of solid boriding time on the structure, hardness and corrosion properties of AISI 5140 steel
Bayca, Salih Uğur; Bican, Osman; Yamanel, Bünyamin; Hekimoğlu, Ali Paşa; Çalış, Merve (Maik Nauka/Interperiodica/Springer, 2020)In this study, AISI 5140 steel samples were borided in an electrical furnace at a temperature of 950 degrees C for 4, 6 and 8 h. Structural examinations, hardness measurement and corrosion tests were performed to determine ... -
Effect of strontium additions on the microstructural and mechanical properties of Al-17Si-4Cu-0.6Mg-3Zn (B390+2 wt%Zn) alloy
Çalış, Merve; Hekimoğlu, Ali Paşa (Springer, 2022)One Al-17Si-4Cu-0.6Mg-3Zn (B390 + 2 wt%Zn) alloy and five B390 + 2 wt% Zn-Sr alloys were produced by permanent mold casting method. Microstructural evaluations were carried out with microscopic techniques. The phases of ... -
Effect of strontium and magnesium additions on the microstructure and mechanical properties of Al-12Si alloys
Hekimoğlu, Ali Paşa; Çalış, Merve; Ayata, Gizem (Korean Inst Metals Materials, 2019)In this study, a binary Al-12Si, eight ternary Al-12Si-Sr, and six quaternary Al-12Si-0.1Sr-(0.2-1)Mg alloys were produced by permanent mold casting. It was observed that microstructure of the binary alloy consisted of the ... -
Effect of strontium on the microstructure, mechanical, and tribological properties of the Zn-40Al-2Cu alloy
Hacıosmanoğlu, Murat; Tellioğlu, Murat; Hekimoğlu, Ali Paşa (Springer, 2023)Zn-40Al-2Cu and Zn-40Al-2Cu-0.1Sr alloys were produced by permanent mold casting method. The microstructure, mechanical properties and wear resistance of the produced alloys were investigated. Microstructural examinations ... -
The effect of Total flowrate on the cooling performance of swirling coaxial impinging jets
Markal, Burak (Springer, 2019)Thermal management ability of swirling coaxial confined impinging air jets (SCCIAJ) are experimentally studied for different total flowrate. the coaxial structure of the jet is provided by a nozzle which is a cylindrical ... -
Effect of working conditions on the lubricated wear behavior of Zn-40Al-2Cu-2Si alloy in the as-aast and T6 heat-treated states
Savaşkan, Temel; Hekimoğlu, Ali Paşa; Azaklı, Zeki; Çalış, Merve (ASME, 2022)In order to determine the effect of working conditions on the lubricated wear behavior of Zn-40Al-2Cu-2Si alloy in the as-cast and T6 heat-treated states, its tribological properties were studied at different oil flowrates, ... -
Effect of zinc content and cutting tool coating on the machinability of the Al-(5-35) Zn alloys
Bayraktar, Şenol; Hekimoğlu, Ali Paşa (Korean Inst Metals Materials, 2020)In this study, Al-5Zn, Al-15Zn, Al-25Zn and Al-35Zn alloys containing 5, 15, 25 and 35 wt% Zn, respectively were produced by permanent mold casting. Their microstructures and mechanical properties were investigated using ... -
Effects of aging state on the low-cycle fatigue properties of 2024 aluminum alloy
Gong, B. S.; Zhang, Z. J.; Hou, J. P.; Liu, R.; Duan, Q. Q.; Wang, H. W.); Wang, X. G.; Liu, H. Z.; Wang, H.; Pürçek, Gençağa; Demirtaş, Muhammet; Yanar, Hande; Zhang, Z. F. (Elsevier, 2024)To reveal the effects of aging state on the low-cycle fatigue (LCF) performance of 2024 Al alloy, LCF experiments were conducted on the 2024 Al alloy with three aging states (underaged (UA), peak-aging (PA) and overaged ... -
Effects of ceramic based pastes on electrochemical performance of solid oxide fuel cells
Mat, Abdullah; Timurkutluk, Bora; Timurkutluk, Çiğdem; Kaplan, Yüksel (Elsevier Sci Ltd, 2014)Various commercially available anode and cathode materials are investigated as the anode and cathode contact paste, respectively, for solid oxide fuel cells. in order to obtain a printable paste, chosen materials are mixed ... -
Effects of contact pressure and sliding speed on the unlubricated friction and wear properties of Zn-15Al-3Cu-1Si alloy
Hekimoğlu, Ali Paşa; Savaşkan, Temel (Taylor & Francis Inc, 2016)The unlubricated friction and wear properties of Zn-15Al-3Cu-1Si alloy were studied over a range of contact pressure (1-5 MPa) and sliding speed (0.5-2.5 ms(-1)) for a sliding distance of 2,500m using a block-on-disc type ...