Boğaziçi Üniversitesi Tezleri: Recent submissions

  • Alternative closure of the Yvon - Bron - Green hierachy 
    Pakzad, Sina Zare. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Lacking an efficient operation on the correct time scales has caused atomistic level simulation methods to encounter some limitations as they can not study phe nomenas like phase transition. One of the obstacles in achieving ...
  • Carbon nanoparticles based polypropylene nanocomposites 
    Bina, Farzad Abdollahzadeh. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Although polymers have some advantages like easy processability, good chemical resistance, low cost, and low specific gravity as compared to metals and ceramic, they have disadvantages such as low strength, low modulus, ...
  • Experimental investigation of heat transfer enhancement of nanofluids in computer cooling sysyems 
    Atik, Özgür. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this study, cooling performance enhancement of computer liquid cooling systems using hBN-water nanofluids are investigated experimentally. Water based nanofluids are prepared with two step method by using ultrasonication ...
  • Providing active haptic feedback in two dimensions on a touch screen 
    Alma, Uğur Alican. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this thesis, a two dimensional active electrostatic tactile display, which is capable of applying directional forces in two dimensions to a stationary nger, is analyzed. Directional forces are created using friction ...
  • Numerical analysis for magnetic effects on newtonian and non-newtonian ferrofuid flow around a circular cylinder 
    Adıgüzel, Ömer Barış. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this study, the e ects of magnetic eld applications are investigated on ferromagnetic ow around cylinder. The analyses are made for Newtonian and non- Newtonian ow types. In order to investigate the non-Newtonian ...
  • Numerical modelling and optimization of solar nanofluids 
    Akyüz, Can Onur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Direct Absorption Solar Collectors (DASCs) have gained popularity as a new and promising design for solar collector systems. DASCs utilize nano uids to absorb solar energy directly; eliminating the need for an absorber ...
  • 3D radial inflow turbine design and analysis for a small scale ORC application 
    Sezerkan, Emre. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this study, the aim is to design and analyze a single stage subsonic radial in- ow turbine for the Organic Rankine Cycle system established in Bogazici University Renewable Energy Technologies Laboratory, by using ...
  • Analysis and optimization of a small scale solar organic rankine cycle system for power generation 
    Soysal, Umut. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this study, a numerical model of a small scale concentrated solar power system is designed for Istanbul conditions and the annual performance of the system is evaluated. As a collector system, a thermal model of parabolic ...
  • Design of a two-degree-of-freedom gripper for parallel manipulators 
    Atakuru, Taylan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Parallel manipulators are closed-loop mechanisms presenting superior performance compared to serial manipulators in terms of speed, accuracy, precision, and rigidity. They have become widely popular in the industry in the ...
  • A system of cracks in an elastic half-plane 
    Alnıak, M. Oktay. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1981., 1981.)
    The plane elastostatic problem of an isotropic elastic half-plane containing an arbitrary system of cracks is considered. Fourier transform technique is employed to obtain the edge dislocation solutions. Using the edge ...
  • Design, production and testing of a laboratory scale organic rankine cycle system 
    Kardaş, Onur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    This study presents the thermodynamic design, implementation and commissioning of a small scale organic Rankine cycle test rig. The objective was to design a exible organic Rankine cycle test rig to study performance of ...
  • Experimental investigation of the effects of cathode position on HK40 hall effect thruster performance and cathode coupling 
    Turan, Nazlı. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Electric propulsion systems are being developed for orbital and deep space maneuvers of spacecraft. Hall e ect thrusters, studied under electric propulsion systems, are among the most preferred thrusters for future space ...
  • Deformation heterogeneity in textured magnesium AZ31 under reversed loading 
    Kapan, Enver. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    The evolution of heterogeneous deformation fields in rolled Mg AZ31 under compres- sion -tension-compression loading along the rolling direction is investigated with multiscale digital image correlation. Full-field deformation ...
  • Experimental and numerical investigation of the crushing process of composite crash box 
    Engül, Mehmet Can. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Due to restrictions to bring down fuel consumption and carbon emissions, the recent research and technology innovations are encouraging automakers to apply new materials in automotive industry for light weight designs. ...
  • Analysis of internal combustion engine cylinder block and head cooling using nanofluid coolant 
    Urgancı, Kemal Burak. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    This study investigates the application of nano uids in an engine cooling system considering the complete system performance. Performance of nano uid coolants is examined in comparison with traditional coolants for a ...
  • Numerical simulation of germanium single crystals grown with a low melt height and an axial vibration 
    Louyeh, Pouya Yousefi. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    In this study, antimony-doped germanium (Ge-Sb) crystal growth from the melt using three directional growth methods, the vertical Bridgman (VB), the axial heat processing (AHP), and the axial vibrational control (AVC), is ...
  • Contribution of artificial proprioception on coordinated manipulation 
    Hojatmadani, Mehdi. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Lacking an e cient sensory feedback system has caused upper-limb robotic prostheses to lose their popularity among users as they cannot re ect realistic feeling of performing a task. One of the obstacles in achieving this ...
  • Experimental characterization of thermophysical properties and convective heat transfer behavior of hexagonal boron nitride nanofluids 
    İlhan, Beybin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Hexagonal boron nitride (hBN) is a highly stable dielectric ceramic material that exhibits versatile properties such as, exceptionally high thermal conductivity and good chemical inertness. In this study, preparation, ...
  • Eeffect of loading rate on fracture of NiTi 
    Mutlu, Fatma. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    This thesis studies the e ect of loading rate on fracture behavior of Shape Memory Alloy (SMA) NiTi. First, Di erential Scanning Calorimetry (DSC) are used to obtain the phase transformation temperatures of NiTi. Then ...
  • Shape optimization of notched parts for maximum fatigue life 
    Erkol, Volkan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    The objective of the thesis study is to develop a shape optimization procedure to maximize fatigue life of notched components under in-phase or out-of-phase multiaxial loading conditions. Two critical-plane fatigue assessment ...

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