Browsing M.S. Theses by Issue Date

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  • Experimental and numerical study of the effect of design and processing parameters on spring-in in composite parts 
    Çınar, Kenan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Residual stresses appearing during cure of thermoset composite laminates lead to distortions such as spring-in. The dimensional changes in the produced parts cause the parts not to mate closely with the other parts in the ...
  • Domain decomposition analysis of aerodynamic coupling 
    Aydın, Özkan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The main objective of this research is the computational modeling and analysis of aerodynamic-coupling effects of multiple bodies in motion in a fluid using domain decomposition techniques. Simulation of such a flow field ...
  • Computational investigation of non-isothermal lid-driven flow in arc-shape cavities 
    Adli, Ali Reza Rezaei. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    This thesis is concerned with the numerical analysis of laminar unsteady flow and heat transfer in lid-driven arc-shape cavities with different aspect ratios for which the top lid, maintained at lower temperature, is driven ...
  • The precipitate evolution in the nickel-based superalloy IN738LC 
    Erdeniz, Dinç. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    IN738LC is a polycrystalline, nickel-based superalloy, which is widely utilized in a variety of applications such as jet engines and land-base gas turbines. This material provides high performance at temperatures above ...
  • Modeling of rectangular counter flow heat-recirculating combustor 
    Saracoğlu, Bayındır Hüseyin. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The meso-scale, 3.5 turn Swiss-roll type counter flow heat recirculating combustor is modeled by a two dimensional finite-volume computational fluid dynamics (CFD) solver. The solver includes momentum, continuity, energy ...
  • Finite element analysis of bolted joint subjected to impact loading 
    Tanlak, Niyazi. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Mechanical components are commonly fastened together through bolts. Many times, they are subjected to impact loads in use. The behavior of the joints under these conditions should be known in a design process. The objective ...
  • Mechanical properties of non-crimp fabric (NCF) fiberglass reinforced composite materials manufactured by using vacuum infusion process 
    Çalışkan, Serkan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Non-crimp fabric (NCF) fiber reinforced composite materials that are composed of textile preforms consisting of multiaxial layers of straight fiber bundles with different orientations stitched together by knitting yarns, ...
  • Transformation induced crack closure and fatigue life analysis of shape memory alloys using finite elements 
    Altan, Nadir Can. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Fatigue crack propagation behavior of shape memory alloys is investigated using finite elements. Fatigue crack growth rate is numerically determined in terms of effective stress intensity factor range and maximum stress ...
  • Fracture mechanics analysis of shape memory alloys using finite elements 
    Şimşek, Miray. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The objective of this work is to study phase transformation and its effects on macroscopic fracture behavior of superelastic shape memory alloy, Nitinol, using finite elements. For this purpose, A 2-D edge-cracked homogenous ...
  • Application of radial basis functions method to advection-diffusion and viscoelastic flow problems 
    Tunçay, Yusuf. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The objective of the thesis is to demonstrate an application of radial basis functions method to linear and nonlinear advection-diffusion and viscoelastic flow problems. As far as the radial basis functions method is ...
  • The effects of different casting parameters on the microstructure and mechanical properties of titanium dental implant 
    Soydemir, Necati. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Dental implants are used to replace the missing teeth instead of dental bridges. Titanium (Ti) and its alloys are suitable to be the material for dental implants due to their excellent mechanical properties, good corrosion ...
  • Design improvement for rear axle cover 
    Bank, Özgür. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this thesis, leakages on the rear axle covers used in Ford vehicles are investigated. Main reasons of leakage are discussed and problem is solved by improving rear axle cover design and by improving cover bolt performance. ...
  • Assessment of the nitriding process paramaters to improve the wear resistance of selected steels 
    Yaman, Onur. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Liquid nitriding is one of the most popular heat treatment methods due to its application temperature which is generally in the ferritic region. This results in a good dimensional control after nitriding. Still, it is ...
  • Stress analysis of a solid propellant rocket motor 
    Yıldırım, Halid Can. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The aim of this study is to perform structural analysis of a solid propellant rocket motor using the finite element method and to determine the effects of aging on the analysis results. Thermal and pressure loadings occurring ...
  • Optimization of forging processes with a concurrent approach 
    Öztürk, Murat. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    With the increasing complexity of manufacturing processes and the interrelations between the different phases, the possibility of a phase being affected by a preselected design variable is very high. In that case, the ...
  • The tensile and compressive properties of four experimental magnesium alloys assessed for light duty truck oil pans 
    Tanzer, Mehmet Barış. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Light weight design has a great importance in the development process of new automobiles. In recent years, the oil prices have increased and the exhaust gases of ignition engines have become a bigger concern for global ...
  • 2-D mathematical modelling of hydrogen storage in metal hydrides 
    Küçük, Gülşad. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this study a numerical model which simulates heat and mass transfer processes of hydrogen absorption in LaNi5 is studied. Energy balance method is used for discretizing the heat equation. Transient heat conduction with ...
  • Cure kinetics modelling and cure shrinkage behaviour of AS4/8552 
    Tuğutlu, Mehmet. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this work, the reaction kinetics and through-the-thickness cure shrinkage upon curing of an AS4/8552 epoxy resin system have been studied. The study included two major works. Firstly, dynamic and isothermal experiments ...
  • Mechanical properties of boron nitride nanotube / epoxy polymer composites 
    Kurtuldu, Güven. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Boron nitride nanotubes (BNNTs) have attracted significant interest of the scientific world due to their remarkable mechanical and thermal properties. They have high modulus and high strength similar to carbon nanotubes. ...
  • Two phase pipe flows in fuel tank refueling 
    Boyacı, Deniz. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Automotive fuel tank refueling is modelled with FLUENT software which is a commercial CFD solver in fluid mechanics. Fuel tank components are modeled geometrically such as the fill pipe, vent pipe and tank dome. Additionally, ...

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