Department of Mechanical Engineering

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Koku, Ahmet Buğra (103)
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Recent Submissions

Nanoheterogeneous ZrTa metallic glass thin films with high strength and toughness Behboud, Ali B.; Motallebzadeh, Amir; Özerinç, Sezer (2022-04-25) This study investigated the mechanical behavior of ZrxTa1−x (x = 21–79 at%) thin films and nanolayered films of ZrTa with modulated composition as model systems to gain insight into the hardness and toughness of metallic g...
ODTÜ Kuzey Kıbrıs Kampusu'nde Bir Güneş Fotovoltaik Santralinin P50/P90 Ampirik Yöntemle Analizi Gören, Deniz; Taylan, Onur (2022-04-20) Large investments in renewable energy systems have some financial risks, and energy exceedance probabilities are required to find the expected range of energy yield values. In this study, P50/P90 analysis was done for a 1 ...
Orta Doğu Teknik Üniversitesi Kuzey Kıbrıs Kampusu'nde Yerinde Güneş Radyasyonu Verilerinin Kalite Değerlendirmesi ve Küresel Eğik Işınlama Tahmini Gören, Deniz; Taylan, Onur (2022-04-20) Financial institutions require bankable datasets to guarantee investments in large-scale solar energy projects, reducing the overall uncertainty of energy yield estimates. Long-term satellite-based data is mostly available...
Experiment-based optimization of an energy-efficient heat pump integrated water heater for household appliances Kütük, Erkan; Çetin, Barbaros; Bayer, Özgür (2022-04-15) Novel experimental-based study aims to determine the extent to which performance parameters of water heater system are altered when the heat pump is integrated and to clarify the optimum values of system variables by means...
A process modeling approach for micro drilling of aerospace alloys with a waterjet guided laser system Subasi, Levent; Gökler, Mustafa İlhan; Yaman, Ulaş (2022-04-01) Laser drilling is a preferred method to make cooling holes on gas turbine parts. Although it is a fast process, there are some quality issues. Waterjet guided laser (WJGL) is a hybrid process, in which a laser beam is coup...
Embedding Information into or onto Additively Manufactured Parts: A Review of QR Codes, Steganography and Watermarking Methods Usama, Muhammad; Yaman, Ulaş (2022-04-01)
Multi-layer model for moving contact problems of functionally graded coatings with general variations in physical properties Toktaş, Selim Ercihan; Dağ, Serkan (2022-04-01) This paper presents a multi-layer model for moving contact problems of functionally graded coatings whose physical properties have general spatial variations. The coating is assumed to be composed of an arbitrary number of...
Buildings sector from a sustainable carbon constrained energy generation perspective Cubukcu (Cubukcu), Nilay; Tarı, İlker (2022-03-01) There is a consensus that climate change, which is about to become a major disaster for humankind, is largely due to anthropogenic activities. CO2 emissions play a dominant role there. Therefore, mitigating CO2 emissions c...
Metal–organic framework coated porous structures for enhanced thermoelectric performance Günay, Ahmet Alperen; Harish, Sivasankaran; Fuchi, Masanori; Kinefuchi, Ikuya; Lee, Yaerim; Shiomi, Junichiro (2022-03-01) Self-powered sensors/transmitters can be operated by thermoelectric generators if the temperature difference across the device is maximized. Here, we demonstrate a novel strategy to increase the overall thermoelectric conv...
Energy and Time Optimal Autopilot for Electric Vehicles Performing Ackerman Cornering Ahiska, Kenan; Özgören, Mustafa Kemal; Leblebicioğlu, Mehmet Kemal (2022-03-01) This paper studies energy and time optimality of electric vehicles during constant Ackerman steering along a quad-circle, and proposes an autopilot assimilating the optimal results. The energy and time optimal solutions sa...
Cytotoxic T Lymphocyte Activation Signals Modulate Cytoskeletal Dynamics and Mechanical Force Generation Pathni, Aashli; Özçelikkale, Altuğ; Rey-Suarez, Ivan; Li, Lei; Davis, Scott; Rogers, Nate; Xiao, Zhengguo; Upadhyaya, Arpita (2022-03-01) Cytotoxic T lymphocytes (CTLs) play an integral role in the adaptive immune response by killing infected cells. Antigen presenting cells (APCs), such as dendritic cells, present pathogenic peptides to the T cell receptor o...
A novel vision-based calibration framework for industrial robotic manipulators Balanji, Hamid Majidi; Turgut, Ali Emre; Tunc, Lutfi Taner (2022-02-01) With the increasing involvement of industrial robots in manufacturing processes, the demand for high quality robots has increased considerably. A high-quality robot is a robot having good repeatability and accuracy. Indust...
Fabrication of a multi-layered decellularized amniotic membranes as tissue engineering constructs Yuksel, Sumeyye; Asik, Mehmet Dogan; AYDIN, HALİL MURAT; Tönük, Ergin; Aydin, Emin Yusuf; Bozkurt, Murat (2022-02-01) As a promising approach in tissue engineering, decellularization has become one of the mostly-studied research areas in tissue engineering thanks to its potential to bring about several advantages over synthetic materials ...
Effect of material properties on interaction of ceramic and glass flyer plates with hypervelocity jet Deniz, Tansel; Yıldırım, Raif Orhan (2022-02-01) A study on the effect of material properties on the interaction of explosively driven ceramic and glass plates with shaped charge jets is performed in order to bolster future studies on the design of reactive cassettes wit...
Co-combustion of high and low ash lignites with raw and torrefied biomass under air and oxy-fuel combustion atmospheres Barzegar, Ramin; Yozgatlıgil, Ahmet; Atımtay, Aysel (2022-02-01) Co-combustion characteristics of high and low ash lignites blended with raw and torrefied pine woodchips were studied by Thermogravimetric Analyzer (TGA) under air and oxy-fuel conditions. The lignites were blended with bi...
Hypervelocity jet interaction with lightweight flyer plates Deniz, Tansel; Akkök, Metin; Yıldırım, Raif Orhan; Department of Mechanical Engineering (2022-1-20) Explosive Reactive Armor (ERA) is an efficient way of defeating threats with shaped charge warheads. It comprises an explosive layer between two steel plates. In the typical arrangement, cassettes are placed in obliquity t...
Influence of biomass thermal pre-treatment on the particulate matter formation during pulverized co-combustion with lignite coal Magalhaes, Duarte; Kazanç Özerinç, Feyza (2022-01-15) This work investigated the particulate matter formation during co-combustion of thermally pre-treated biomass with coal. Olive residue was chosen as agricultural waste biomass, and Tunçbilek lignite as the coal. The biomas...
The effect of torrefaction, slow, and fast pyrolysis on the single particle combustion of agricultural biomass and lignite coal at high heating rates Magalhães, Duarte; Gürel, Kaan; Kazanç Özerinç, Feyza (2022-01-15) The present paper studies single particle combustion of olive residue (OR), almond shell (AS), and Tunçbilek lignite (TL) and their thermal pre-treated particles in a vertical wire mesh reactor (WMR) setup. Pre-treatment o...
Investigation of olive mill sludge treatment using a parabolic trough solar collector Ben Othman, Fares; Eddhibi, Fathia; Bel Hadj Ali, Abdessalem; Fadhel, Abdelhamid; Bayer, Özgür; Tarı, İlker; Guizani, Amenallah; Balghouthi, Moncef (2022-01-15) The olive mill sludge treatment system developed in this study is an indirect solar dryer driven by a solar parabolic trough collector (PTC). A heat exchanger is implemented to heat air with hot oil coming from the solar c...
A capillary driven microfluidic chip for SERS based hCG detection Ahi, Elcin Ezgi; TORUL, HİLAL; Zengin, Adem; Sucularli, Ferah; Yıldırım, Ender; Selbes, Yesim; SULUDERE, ZEKİYE; TAMER, UĞUR (2022-01-01) In this study, a capillary driven microfluidic chip-based immunoassay was developed for the determination of Human Chorionic Gonadotropin (hCG) protein, which is prohibited by the World Anti-Doping Agency (WADA). Here, we ...

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