Browsing M.S. Theses by Issue Date

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  • Distributed control of strings of vehicles in automated highway systems 
    Şahin, İsmail Hakkı. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    In this thesis, distributed control of vehicular arrays is studied. The main approach is to design distributed controllers, where the vehicle interconnections repeated in the controllers. The spatially distributed nature ...
  • Segregation and interface stability in germanium-silicon single crystal alloys 
    Dario, Aidin. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Melt growth allows large-scale production of semiconductor crystals. However, growth of Ge-Si single crystals from melt is extremely sensitive to experimental parameters. Obtaining accurate thermal data near the solid/liquid ...
  • Robust feedforward control design for lateral vehicle dynamics 
    Tanıker, Semih. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    In this thesis, robust feedforward controller is designed for active steering which is an alternative vehicle dynamic control method to active braking control. The aim of this study is to increase performance and robustness ...
  • Side-slip estimation for ESP applications 
    Şahin, Can. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    ESP (Electronic Stability Programme) applications require reliable data about vehicle state in order to operate correctly. One of these data is the vehicle side-slip angle. In this study, a nominal and a robust side-slip ...
  • Design of an adaptive - passive dynamic vibration absorber composed of a string - mass system equipped with negative stiffness tension adjusting mechanism 
    Acar, Mustafa Ali. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    In this study, a new adaptive-passive dynamic vibration absorber design is discussed. This proposed design is composed of a stiff string under tension with a central mass attachment as a dynamic vibration absorber (DVA), ...
  • Finite element modeling of synthetic fiber-ropes 
    Akalp, Umut. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    The synthetic fiber ropes are used in many fields such as cord fabrics, industrial fabrics, power transmission systems, tires and off-shore applications. The ropes are formed by twisting a small number of yarns which are ...
  • Tuned mass damper appications on slender structures to improve earthquake and wind response 
    Doğan, Veysel. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    The subject of the study is to improve earthquake and wind response of slender structures by using Tuned Mass Damper (TMD) applications. TMD application on main structure reduces the structural response amplitude by creating ...
  • Design of a compliant lever-type passive vibration isolator using quasi-zero-stiffness mechanism 
    Koçak, Kamil. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    In this thesis, design and analysis of a new passive vibration isolator using compliant lever-type and quasi-zero-stiffness (QZS) mechanisms is provided. At first, various systems are designed without QZS mechanism. It is ...
  • Evolution of precipitate microstructure in the superalloy IN738LC during compression creep 
    Altınçekiç, Arün. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Superalloys are high temperature materials which are used widespread in many industries, especially in several engine components in gas turbines utilized for electricity production, marine applications, and aircrafts. This ...
  • Effects of Al2O3, ZrO2, and TiO2 ceramic additives on the sintering and mechanical properties of natural hydroxyapatite 
    Özden, İlker. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Hydroxyapatite (HA) is considered as the most appropriate ceramic material for implantation due to its close chemical and crystallographic resemblance to mineral part of vertebrates‟ bone and tooth, excellent biocompatibility, ...
  • Failure behavior of composite laminates under out-of-plane loads 
    Koç, Murat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    In this study, failure behavior of fiber-reinforced composites under out-of-plane loads is investigated by means of four – point bending tests. Firstly, four – point bending tests are modeled analytically using the classical ...
  • Thermoelectric properties of silicon doped germanium 
    Sicim, Hasan Özgen. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Seebeck coe cient is a property of material which shows the electrical potential di erence created by the temperature di erence. This electrical potential is useful in thermocouples and thermopower generation applications. ...
  • Active noise control in a duct with flow 
    Yüksel, Osman. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    In this thesis, active noise control in a duct with ow is investigated. A one dimensional acoustic duct model, in which uid medium inside the duct has a mean ow velocity, is presented. The acoustic duct model is solved ...
  • Micromechanical progressive damage model for predicting resin dominated strength values of fibre reinforced composite under various types of loading 
    Öz, Fatih Ertuğrul. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    In this study, a three-dimensional Representative Volume Element (RVE) with hexagonally packed array is used to predict the mechanical behaviour of a unidirectional carbon fibre reinforced epoxy under various types of ...
  • Constitutive models of shape memory alloys and their implementation to finite elements 
    Yurtoğlu, Mete. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    The aim of this work is to study existing constitutive models for shape-memory alloys and to implement them to nite elements. Fracture behavior in Mode-I and mixed-mode is studied and, for this purpose, a 2-D edge cracked ...
  • Numerical investigation of convective-diffusive transport using the smoothed particle hydrodynamics technique 
    Danış, Mustafa Engin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    In this thesis, Incompressible Smoothed Particle Hydrodynamics (ISPH) technique is implemented to analyze various convective-diffusive transport problems numerically. First of all, a brief summary of applications and ...
  • Optimization of pigmented coatings for concentrating solar thermal applications 
    Yalçın, Refet Ali. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Spectrally selective coatings are used in absorbers of solar collectors to maximize efficiency of solar thermal energy systems. Desired coating should have high absorptance at solar wavelengths and low emittance at the ...
  • Level set analysis of two-fluid interfacial flows 
    Sheikhi, Aidin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    In this study incompressible immiscible two-phase ows have been analyzed in two dimensions using Level Set method. Firstly, a brief explanation about other numerical methods existing in the field of modelling interfacial ...
  • Phononic band gaps in two-dimensional periodic structures with inertial amplification mechanisms 
    Dilber, Gizem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    In this thesis, a 2D periodic structure equipped with inertial amplification mechanisms is designed. The structure is optimized to obtain a wide and deep phononic band gap in low frequency ranges. The aim is to prevent ...
  • Cooling performance investigation of nanofluids for internal combustion engine systems 
    Aydoğan, Onur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    This study aims to evaluate numerically the cooling performance increase of an internal combustion engine cooling system due to the use of nanofluids. Throughout the study a set of analyses has been done to determine the ...

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