M.S. Theses: Recent submissions

  • 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 ...
  • Design and testing of a mechanical strain extensometer 
    Fercan, Ahmet. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    This thesis’ main aim is to conduct the creation of a mechanical extensometer with its all design levels including its necessary calculations, analysis, manufacturing, electronics and testing of it. The most similar ...
  • Kinematics of dummies during crash using finite elements and multibody dynamics 
    Aşkan, Sertan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    First, multibody dynamics model of the occupant compartment is built using a commercial software, Madymo. Occupant results from Madymo model are compared to sled test results and Madymo model is calibrated to better simulate ...
  • Longitudinal fins of rectangular cross section in heat transfer 
    Karaca, Ergun. (Thesis (M.S.)- Robert College. Faculty of Graduate School of Engineering, 1965., 1965.)
  • The effect of interface strength on crack interactions in thin film coated substrates 
    Özcan, Can. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Crack interactions and propagation paths for thin film and substrate systemsare studied by using finite element method. 2D edge crack analysis are performed tovalidate robustness of the method used; results are compared ...
  • IQC-based gain-scheduled control of linear periodic systems using output feedback 
    Tekeli, Gökhan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this thesis, output feedback control of linear periodic systems is studied. Themain approach is usign a gain-scheduled controller, where the synthesis of the controlleris based on linear parameter-varying control theory ...
  • Numerical analysis of newtonian and non-newtonian lid-driven cavity flow in plane and curved geometries 
    Mercan, Hatice. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The aim of this thesis is to develop a numerical solution to the lid driven cavityproblem in plane and curved geometries for both Newtonian and non-Newtonian fluids. The planar case is the lid-driven square cavity problem ...
  • Design of a torpedo: study of drag reduction using computational fluid dynamics 
    Sancı, Selim. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Drag is a big problem for objects moving at high speeds. The reduction of dragshould be the primary consideration of the engineers since it provides high speeds withlimited engine power. Drag reduction also provides energy ...
  • Pressure slip casting method for production of ceramic compact parts 
    Kaya, Göksu. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The fundamentals of slip casting method is based on the slip gets into form of the mold by the water absorption caused by the means of capillary forces formed on the porosities of the mold after powder suspension is poured ...
  • Comparison of mechanical properties of semi solid forming and hot forming and hot forming of A356 aluminum alloy 
    Doğruyol, Erhan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Thixoforming is a forming technology to produce near net shaped complex partswith high mechanical properties especially for automotive industry. The process is based on a discovery made at MIT in the early 1970s. The ...
  • The influence of heating conditions on semi-solid forming of aluminum alloys 
    Önsel, Mehmet. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    The use of aluminum alloys for complex parts is receiving a great deal of attentionrecently in the automotive sector worldwide. Semi-solid forming appears to be a veryattractive method for producing complex parts as it ...
  • Mechanical properties and microstructure evolution of thixoformed aluminum alloys 
    Bozkurt, Uğur. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    Thixoforming is an attractive process for the manufacture of complex parts withsubstantial savings of time and cost. Different from the conventional metal forming technologies which use either solid metals (forging) or ...
  • Modeling of an autothermal heat-integrated wall reactor for simulation of hydrogen production for fuel cell applicayions 
    Biçici, Cihan Banu. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    An autothermal, heat integrated wall reactor model for hydrogen production forvehicular fuel cell applications is investigated using computer-based simulation techniques.The two dimensional reactor model is based on a ...
  • Shape optimization of notched mechanical members to reduce stress concentration 
    Çilek, Ufuk. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    Intensive competition in the market place today requires engineers to continuallysearch for better and more economic designs. Current interest especially in structural shapeoptimization is largely motivated by demands for ...

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