Cam yüzey üzerinde Zno-Kitosan nanoyapıların büyütülmesi

Uzunbayır, Berkant

ABSTRACTIn recent years, the utilization of nanotechnology rapidly developed for the wide range of sciences. Nanomaterials shows unique properties and ZnO nanostructures are the most suitable structures for biosensor applications due to their high surface area and high electrochemical activity. In this project first, we have coated zinc film on to Glass/ITO surface by electrochemical deposition method. Then we have transformed the obtained zinc film to nanostructured ZnO by electrochemical anodization method. At the end, we have tried to modify the ZnO nanostructured surface with chitosan for ...Daha fazlası

Yüksek Lisans 2019 Ahmet Aykaç Graduate School of Natural and Applied Sciences 10 Görüntülenme

Erişime Açık

Investigation of the cooling system efficiency in aluminum low pressure die casting Alüminyum alçak basınçlı dökümde kullanılan soğutma sisteminin veriminin araştırılması

Yavuz, Hakan

ABSTRACTIn this thesis, the flow rate of air coolers used in low pressure casting method is examined. Low pressure die casting (LPDC) method is used for many types of products. Light alloy wheels, motor housings and pistons are examples of these products. Air-cooling is used to provide directional solidification to avoid casting defects on the casting part. In this study, the flow rate of air-cooling is calculated by using computational fluid dynamics (CFD) methods. After the numerical calculations were confirmed by experimental methods, the affect of the variables on the cooling system flow r ...Daha fazlası

Yüksek Lisans 2019 Onur Ertuğrul Graduate School of Natural and Applied Sciences 25 Görüntülenme

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Design and robot operating system based control of a modular robot manipulator Modüler robot manipülatör tasarımı ve robot işletim sistemi tabanlı kontrolü

Kahveci, Aytaç

ABSTRACTIn this thesis, a new design of the modular robot manipulator and its control with Robot Operating System is presented. The modules are designed to have an adjustable twist angle, which enables to create different robot manipulator configurations. Kinematic synthesis on the gripper module is conducted and structural parameters of the gripper is determined. Axis sets on the modules are determined by Denavit-Hartenberg method. Inverse and forward kinematic analysis and singularity analysis are performed. Numerical inverse kinematic solver is proposed for modular robot manipulators with m ...Daha fazlası

Yüksek Lisans 2019 Erkin Gezgin Graduate School of Natural and Applied Sciences 77 Görüntülenme

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Preparation and characterization of carbon-based nanofluids Karbon bazlı nanoakışkanların hazırlanması ve karakterizasyonu

Fidan-Aslan, Tuğçe

ABSTRACTNanofluids are produced by the addition of nano-sized particles to the base fluid in order to increase the thermal conductivity of heat transfer fluids. Preparation of stable nanofluids with high thermal conductivity is a very complex process and their usage in heat transfer applications are related to many important parameters from the stability of nanofluids to their viscosity. Optimization of these parameters is essential for the practical use of nanofluids. The objectives of this study are to successfully preparecarbon-based nanofluids while investigating the stability mechanisms a ...Daha fazlası

Yüksek Lisans 2019 Elif Alyamaç Seydibeyoğlu Graduate School of Natural and Applied Sciences 30 Görüntülenme

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Estimation of annual energy production of coupled vertical-axis wind turbines in a semi-complex terrain Eşli çalışan düşey eksenli rüzgar türbinlerinin yarı karmaşık bir sahadaki yıllık enerji üretiminin değerlendirilmesi

Başer, Ferhat Cem Ferhat Cem

ABSTRACTRecent research shows that the vertical-axis wind turbines (VAWTs) can provide up to 6 - 9 times more power generation in the same footprint area when they are sited in proper configurations in contrast to horizontal-axis wind turbines (HAWT). In order to site wind turbines in a field, it is necessary to do a wind resource assessment (WRA). This assessment provide important inputs for the placement, sizing and design detailing of the wind farm. In addition to the correct determination of the site, it is also critical to place the wind turbines in the most efficient way. When the necess ...Daha fazlası

Yüksek Lisans 2019 Ziya Haktan Karadeniz Graduate School of Natural and Applied Sciences 19 Görüntülenme

Erişime Açık

Design and development of a multi degrees of freedom mobile platform to be utilized on rough terrain Engebeli arazi üzerinde kullanılmak üzere çok serbestlik dereceli bir mobil platform tasarımı ve geliştirilmesi

Paçalı, Ercan

ABSTRACTThanks to the technological advances that have been continuously improved throughout the last century, applications of robotics have increased in every aspect of our lives. Within all of these various applications, mobile robotics can be given as one of the most common and popular subfield. Utilization of mobile robots emerges in many environments such as, medical applications, military operations, simple household routines, and even space exploration. On the other hand, due to the requirements of different robot designs for individual applications, need for mobile robot designs, which ...Daha fazlası

Yüksek Lisans 2019 Erkin Gezgin Graduate School of Natural and Applied Sciences 31 Görüntülenme