M.S. Theses: Recent submissions

  • Shape optimization of bumper beam under low-velocity impact 
    Dadashzadeh, Sina. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Bumper beam is an important part of vehicles providing protection from colli sions. Its main function is to prevent damage to the rest of the vehicle in low-speed collisions. For this reason, it should absorb the energy ...
  • Electrospinning of polycaprolactone / bovine gelatin / bovine hydroxyapatite biomimetic composite nanofibers 
    Akalın, Güneş Ece. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this study, Polycaprolactone (PCL) / Bovine Gelatin (GE) / Bovine Hydroxyapatite (BHA) biomimetic composite nanofiber scaffolds are manufactured for bone tissue regeneration applications by electrospinning. By controlling ...
  • Experimental and numerical progressive failure analysis of corrugated core type composite sandwich structure 
    Çalık, Emre. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    The demand in industry for composite sandwich structures has been rising thanks to their superior material properties and design flexibility. It is possible to design a composite sandwich structure special to any operating ...
  • Scattering of SH-waves by circular and elliptical cylinders-A solution by the hilbert-schmidt method 
    Tulgar, Hasan. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1981., 1981.)
    Near- and far-field solutions are presented for the scattering of SH-waves by a circular cavity and a rigid inclusion in infinite space while only far-field results are given for an elliptical geometry. Integral equations ...
  • The effects of polymer / surfactant additives on the flow and heat transfer around a circular cylinder in periodic vortex shedding 
    Şahin, Çağlar. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    This study focuses on the flow and heat transfer properties of dilute poly mer/surfactant solutions using Newtonian, and inelastic/elastic non-Newtonian con stitutive models. The results are discussed in terms of drag and ...
  • Experimental and numerical progressive failure analysis in open-hole tensile tests of quası-isotropic composite laminates 
    Ahmadvashaghbash, Sina. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this study, the progressive failure behavior of the Open-Hole Tension (OHT) specimens was analyzed by both numerical and experimental methods. The analysis of failure behavior of the notched composite laminates under ...
  • Effect of inherent microtexture on strain heterogeneity in rolled magnesium AZ31 
    Üçel, İbrahim Buğra. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    The level of utilization of magnesium alloys in engineering practice is steadily increasing, mainly due to their high specific strength. Their complex mechanical be havior, however, requires characterization at microstructural ...
  • Implementation of the crystal plasticity finite element method 
    Azar, Mehrdad Ghanbari. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Computational materials science is one of the fastest growing areas in modern materials research, and controlling the microstructure of a polycrystal is crucial to de signing advanced materials. The extreme environments ...
  • Design of an adaptive output feedback controller for LTI systems with sinusoidal disturbances 
    Yılmaz, Cemal Tuğrul. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2017., 2018.)
    This thesis is a theoretical study which develops an adaptive output feedback controller for LTI system driven by unknown sinusoidal disturbances. Two specific systems are considered. As the first one is the unknown minimum-phase ...
  • Backstepping boundary control of a wave PDA with spatially distributed time invariant unknown disturbances and its application to an overhead crane model 
    Ayberk, İlhan Umur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    The aim of this thesis is to control the speed of a payload carried by an overhead crane with the control input provided from the top end of the crane cable. It is assumed that the only measurement available to the controller ...
  • Robust strain measurement on deformation-roughened microscopic surfaces with fluorescent marker imaging 
    Raeissi, Mona. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Digital image correlation (DIC) implemented at microstructural length-scales of materials with microscopic imaging has emerged as an important tool to investigate the fundamental mechanisms of deformation. An important ...
  • Design of adaptive controller and extremum seeking algorithm for quadrotors 
    Demircioğlu, Hüseyin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this thesis, two tasks for quadrotors are presented. The first is an inner and the second is an outer loop control design for quadrotors. For the first task, an adaptive contoller for quadrotors is designed. During the ...
  • Design of vibration isolation systems that incorporate axial to rotary motion conversion mechanisms 
    Orta, Adil Han. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this thesis, compliant axial to rotary motion conversion mechanisms are ex amined to generate isolation band gaps. To achieve low frequency phononic band gaps, LADD mechanism is examined, and its the effective inertia ...
  • Stability of the non-isothermal taylor-couette flow of a ferrofluid under external magnetic field 
    Kamış, Yavuz Emre. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    A stability analysis is conducted for the non-isothermal Taylor-Couette flow of a non-conductive ferrofluid under the action of an azimuthal magnetic field. The tran sition from steady flow to Taylor vortex flow is investigated ...
  • Design of a 150 kw solar power plant in Cihanbeyli 
    Sürmen, Ali. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1981., 1981.)
    This study is devoted to the modeling of the performance of solar concentrators for central receiver power plants. A continuum field representation of ideal heliostat arrays is adopted in the formulation of the modeling. ...
  • Design and control of an active ankle-foot orthosis 
    Kırtaş, Oğuzhan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Active ankle-foot orthoses are used to assist patients suffering from stroke, mul tiple sclerosis, cerebral palsy etc. through providing an external force supply to track normal gait cycles. In this study, design of an ...
  • Nonlinear preconditioning applied to internal flows 
    Yıldız, Ersin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Solution of large and sparse nonlinear system is required in many computational science and engineering areas. Well-known inexact Newton method converges fast with a good initial guess, however such an initial guess is ...
  • Forced convection flow and heat transfer of non-newtonian nanofluids through a circular tube 
    Kıyak, Gökhan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Non-Newtonian nanofluids due to either non-Newtonian base fluid or high nano particle concentration flow cases have been numerically investigated through a circular tube under laminar flow condition. Governing equations have ...
  • Wavelet analysis in computational fluid dynamics 
    Kahraman, Ali Berk. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Wavelets are compact functions in space and time which enable easy data com pression through multi-resolution analysis. The compression is done by scattering dif ferent resolution levels of wavelets onto the domain, and ...
  • Visual product recognition from retail scenes 
    Aydın, Alper. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this thesis project, we explore the problem of recognizing the products in retail scenes. We proposed a method where we localize the products by detecting their separating boundaries and recognize the product images ...

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