Fen Bilimleri Enstitüsü: Recent submissions

  • State-feedback control of a rigid rotors supported on squeeze-film bearings 
    Akgül, H. Basri. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1988., 1988.)
    In this thesis, pole assignment problem, one of the most commonly used control schemes, is considered and special emphasis is given on the application of available pole assingment algorithms in multi-input systems. Various ...
  • Transerve vibration of an axially accelerating string 
    Pakdemirli, Mehmet. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1987., 1987.)
    The transverse vibration of an axially accelerating string is investigated. The equation of motion is developed using Hamilton's principle. The resulting partial differential equations are discretized using Galerkin's ...
  • Thermodynamic feasibility of solar-assisted absorption cooling 
    Olcay, Dilek. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1987., 1987.)
    Solar cooling is probably among the most promising ways for solar energy utilization in near future. The purpose of the present study is to investigate the thermodynamic feasibility of operating the solar absorption system ...
  • Metal flow in forward cold extrusion 
    Önelge, Raci. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    In this work, experiments with a small-scale extrusion apparatus are described. Billets of commercially pure lead, which has the diameter of 50 mm were extruded at romm temperature into 25 mm diameter solid bars at an ...
  • Analysis of pressure variations in a variable compression engine cylinder 
    Taşcı, Fevzi. (Thesis (M.S.)- Robert College. Faculty of Graduate School of Engineering, 1964., 1964.)
  • Evaluation of time integration algorithms for the semidiscretized heat conduction equation 
    Öncü, Sabri. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    Finite element space discretization of heat conduction equation is briefly outlined, stability and convergence characteristics of relevant time integration methods are discussed. For the numerical integration of the ...
  • A phenomenological approach to stress corrosion cracking 
    Nehrozoğlu, Mehmet Aydemir. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    The applicability of the J-integral to SSC in the elasticplastic range is investigated by using precracked cantilever beam specimens of low carbon steel in 6N H2S04 solution. The correlation of J-integral with the incubation ...
  • Effects of extrusion parameters on the mechanical properties of aluminum 
    Karahan, İsmail. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    The effects of some extrusion parameters, extrusion ratio and initial billet temperature, on the structure and mechanical properties of aluminum are examined. Initial billet temperature and extrusion ratio determine the ...
  • An application of the finite element method to three dimensional heat conduction problems 
    Eruç, Şükrü Erden. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    A finite element solution scheme for three-dimensional transient conduction heat transfer problems is devised and its validity is substantiated through application to representative problems. The governing matrix equation ...
  • The effect of notch geometry on fracture behavior of glass fiber reinforced polyster 
    Elaldı, Faruk. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    The aim of this study is to determine quantitatively fracture toughness properties as a function of the crack tip radius, and the effect of fatique damage produced at the crack tip to the critical stress intensity factor, ...
  • Hot-torsion experiments on aluminum and aluminum alloys 
    Balkır, Ufuk. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    In this study, the effects of temperature and strain rate on the deformation behaviour of aluminum 1100 and aluminum 2024 are investigated. The fundamentals of hot-torsion tests are briefly reviewed and testing methods are ...
  • Some studies on the propagation of waves in a viscoelastic medium 
    Çolpan, Oya. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    In this study, the general theory of viscoelastic surface waves, the effects of initial stress on the reflection and refraction of plane waves, plane Lamb's problem ina viscoelastic medium under the influence of gravity ...
  • The solar-assisted heat pump systems for space and water heating 
    Aşçıoğlu, İffet Naz. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    In this study, solar-assisted heat pump systems, their contribution to reduce the consumption of non-renewable energy and their compensation for some of the shortcomings of the individual systems are considered. The base ...
  • The effect of high austenitization temparatures on the mechanical properties and microstructure of AISI 5140 steel 
    Uç, Osman Nurettin. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    In this study, the effect of high austenitization temperatures to improve the mechanical properties of AISI 5140 steel was investigated. Firstly, a general understanding of iron-carbon syatem, transformation of austenite ...
  • Adaptive guidance of short-range tactical missiles 
    Ağabay, Özcan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    Missile control methods are briefly outlined, the notation and conventions used in guided missile literature are introduced. A realistic simulation model is formed considering the differential equations governing motion ...
  • Theoretical analysis of the pulsejet prediction of its performance experimental verification of the calculated performance 
    Hacopulos, Yorgo. (Thesis (M.S.) - Robert College. Faculty of Graduate School of Engineering, 1963., 1963.)
  • Shape-memory effect in a Cu-Al-Ni alloy 
    Selimbeyoğlu, Erol. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    In this study, the microstructure and mechanical property relationship of Cu-13.98Al-2.94Ni (wt.pct.) alloy that exhibits shape-memory effect is investigated. A brief review of thermoelasticity, pseudoelasticity, and memory ...
  • Available energy analysis of solar-assisted heat pump 
    Özmen, Akif. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    The aim of this study is to perform the second law analysis for solarassisted heat pump system. For this purpose, the computer simulation of solarassisted heat pump system is performed and the results are obtained for ...
  • Computer aided design of fluid power systems 
    Gavrilidis, Can. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    This project aims to an integrated computer approach for the design and simulation of hydraulic systems, using components available in market. An interactive computer software is developed, which draws a graphical layout, ...
  • Effects of titanium and boron additions on the microstructure and mechanical properties of aluminum castings 
    Akagündüz, M. Bülent. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)
    In this study, the production of various master alloys (Grain refiners) and their effects on the microstructure and mechanical properties of aluminum alloys such as Etial-7(1070), Etial-5(1050) and Etial-60 (6063) are ...

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