Boğaziçi Üniversitesi Tezleri: Recent submissions

  • The effects of process parameters on the cell morphology of the aluminum foam 
    Uçak, Tolga. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Aluminum foams have gained a considerable amount of attention in recent years with their very low specific weight, relatively high compression strength among cellular materials combined with good energy absorption. In the ...
  • Influence of processing variables tools and materials on the physical properties of powder metallurgy products 
    Topaloğlu, Vasil. (Thesis (M.S.)- Robert College. Faculty of Graduate School of Engineering, 1965., 1965.)
  • Optimum preform and die shape design for improved hardness distribution in cold forged parts 
    Tümer, Haluk. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    To predict and then to control hardness distribution in a cold formed part is important, since it is a critical property due to its effects on the forgability of the part and its performance in use. In cold forming processes, ...
  • Determination of the effect of viscoelasticity on the bond strength of a dental metal-ceramic system using finite element method 
    Ünlü, Utku Cemal. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Porcelain-fused-to-metal (PFM) is a kind of restoration process used in pros- thetic dentistry, where a certain metal is cast as basement on which the dental ceramic is fused by firing. Due to the difference in the ...
  • K-dominanat region in 2-D functionally graded materials under mixed mode loading 
    Altay, Gökce. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    The extent of K-dominant region around the crack tip of a functionally graded plate under mixed mode loading is investigated. A center cracked plate is used for the study. The stress intensity factors and T-stresses are ...
  • Aerodynamic analysis of a paraglider wing using domain decomposition techniques 
    Başol, Altuğ Melik. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    The flow around a curvature tube is investigated using it as a simple 2D model of a paraglider wing based on the similarity between their top views. The solutions are obtained for five different angle of attacks varying ...
  • IDLE speed control of a diesel engine 
    Akyıldız, Bahadır. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, model based idle speed control of a diesel engine is studied. Since diesel engine models derived from first principles are very complicated, a mean-value diesel engine model which captures the dynamics of ...
  • The effects of solidification conditions on the formability of the twin-roll cast AA1050 strip 
    Atlı, Kadri Can. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Twin-roll casting (TRC) is a continuous sheet metal casting process, which was developed as an alternative to the conventional “ingot casting and hot mill method” of sheet metal production. Unlike the latter method, TRC ...
  • Effects of thermal conditions on the mechanical properties of squeeze cast ZA-27 alloy 
    Morgül, Erol. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Squeeze casting is a generic term to specify a fabrication when solidification is promoted under high-pressure within a re-usable die. It is a metal-forming process, which combines permanent mould casting with die forging ...
  • An experimental and a numerical investigation of a high pressure die casting aluminium alloy 
    Boydak, Özlem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In the present study, a computer simulation of a high pressure die casting of aluminium alloy was performed using a sophisticated commercial software called Magmasoft and, then its results were compared with the real ...
  • Deposition and characterization of metal doped diamond like carbon (Me(Ti, Nb)-DLC) films 
    Uğur, Deniz. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In today’s world, sustainable development and green technology concepts are pronounced more than ever, which force tighter efficiency measures and implementation of energy saving solutions to every applicable system. Wear ...
  • Design of an internal combustion engine laboratory for Robert College 
    Papadopulos, Fedon. (Thesis (M.S.)- Robert College. Faculty of Graduate School of Engineering, 1965., 1965.)
  • Effects of suspension and steering parameters on handling of a light commercial vehicle 
    Acar, Artuğ. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The influence of suspension and steering geometry parameters on lateral drift of a light commercial vehicle is investigated by using Automatic Dynamic Analysis of Mechanical Systems (ADAMS). The aim of this study is to ...
  • Comparison of crack initiation criteria in functionally graded materials under mixed mode loading 
    Sürücüoğlu, Çiğdem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this thesis, analytical crack initiation criteria are evaluated in detail. Finite element method is used to determine crack initiation angles for edge cracked functionally graded materials. Minimum strain energy density ...
  • Investigation of the effect of bismuth on the squeeze cast ZA-27 alloy 
    Bozer, Uğur Osman. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Squeeze casting is specified as a technique where solidification is promoted under high pressure within a re-usable die hence, combining the permanent mould casting and die forging in a single operation. Squeeze casting ...
  • Multiple-domain analysis of 3-dimensional flow over an ellipsoidal body of aeronautical interest 
    Sevinç, Erkan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Numerical solutions to partial differential equations form the backbone of mathematical models that simulate gas flow, which in the present case is assumed to be airflow around an arbitrary atmospheric body. Significance ...
  • LPV control of two link flexible manipulator 
    Polat, İlhan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    This thesis is concerned with the design of controllers for Linear Parameter Varying (LPV) systems in nonsingular descriptor form using a parameter dependent Lyapunov function. The systems considered are in the form of ...
  • The effect of heat treatment on mechanical properties of spring steel 
    Kurt, Emre. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Springs are mechanical elements that exert forces or torques and absorb energy. The absorbed energy is usually stored and later released. Steel springs are made in many types, shapes, and sizes, ranging from delicate ...
  • Computer-aided design of axial gas turbine meter blades 
    Günaydın, Cem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Designing a gas turbine meter (GTM) to maintain certain levels of performance features is usually done by manufacturing and testing prototypes in experimental setups. However an experimentally supported Computational Fluid ...
  • Experimental study of crack initiation angle in PMMA and PS plates under mixed-mode loading 
    Işık, A. Cenk. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The purpose of this study is to determine crack initiation angles, the effect of critical radius and T-stress on crack initiation angles using experimental and analytical techniques. The results obtained using the maximum ...