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Browsing Makina Mühendisliği by Author "Anlaş, Günay."

Browsing Makina Mühendisliği by Author "Anlaş, Günay."

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  • Experimental investigation of the effect of phase transformation on francture parameters of NiTi shape memory alloy 
    Haghgouyan, Behrouz. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    This thesis aims to investigate the effect of martensitic phase transformation on fracture parameters of Nickel-Titanium (NiTi) SMA. NiTi specimens were characterized using optical microscopy and uniaxial tensile testing. ...
  • 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 ...
  • Failure criteria for functionally graded materials and application of GTN model using finite elements 
    Oral, Alpay. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Functionally Graded Materials (FGMs) are special composites with a point to point continuous property variation. In this failure of laboratory scale FGMs is modeled using Gurson - Tvergaard -Needleman (GTN) model. 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 ...
  • 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 ...
  • LPV modeling and robust control of yaw and roll modes of road vehicles 
    Başlamışlı, Selahattin Çağlar. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, the usefulness of linear parameter varying (LPV) modeling of vehicle dynamics is investigated for controller synthesis to take nonlinear tire behavior into account. The H infinity control framework is used ...
  • Mechanical behavior of low density polymeric foams under multiple loading and unloading 
    Öztürk, Umud Esat. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    In this thesis, mechanical behavior and energy absorption characteristics of low density polymeric foams under multiple loading and unloading are investigated for uniaxial and hydrostatic compression, uniaxial tension, ...
  • Modeling of micropipette aspiration of flaccid human red blood cell using finite elements 
    Akyıldız, Ali Çağdaş. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    This thesis aims to analyze the steady state deformation of flaccid red blood cell (RBC) in micropipette aspiration (MA) experiment using finite elements (FE). Three different geometries, namely infinite plane, disk and ...
  • Prediction of dynamic force characteristics od radial tires using finite element and experimental techniques 
    Alkan, Veysel. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    A tire is one of the most important components of a vehicle. To predict its dynamic force characteristics, a detailed finite element model is constructed. In the finite element analysis of the tire, nonlinear stress-strain ...
  • 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 ...
  • Theoretical and numerical analysis of fracture of shape memory alloys 
    Hazar, İbrahim Selçuk. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The subject of this thesis is theoretical and numerical analysis of the fracture of SMAs. First, the size of the martensitic region surrounding the tip of an edge-crack in a SMA plate is calculated analytically using the ...
  • Thermodynamic and economic analysis of ORC with optimiation of system components 
    Bekiloğlu, Hasan Eren. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Organic Rankine cycles (ORCs) are used to generate power from low temper ature heat sources. There are two main chapters in this study. In both parts, 28 different working fluids are used for three different heat source ...
  • Thermodynamic modelling and experimental validation of a laboratory scale ORC scroll expander 
    Ogan, Doruk Can. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The detailed geometrical and thermodynamic modelling and experimental vali dation of scroll expander is presented in this thesis. Firstly, a fully mathematical model is developed for moving and fixed scrolls inside the ...
  • 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 ...

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