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Browsing Makina Mühendisliği by Author "Altıntaş, Sabri."

Browsing Makina Mühendisliği by Author "Altıntaş, Sabri."

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  • 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 ...
  • Manufacturing of rigid porous filters 
    Mahmutyazıcıoğlu, Nazım. (Thesis (M.S.) - Bogazici University. Institue for Graduate Studies in Science and Engineering, 2002., 2002.)
    Filtration is a basic operation frequently used in ceramic industries. Ceramic articles can be shaped using appropriate molds with or without pressure application. In this study, plastic molds with filter properties, high ...
  • 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 ...
  • 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. ...
  • 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 ...
  • Microstructure and mechanical properties of friction welded cast and forged steel bars 
    Sunay, Yusuf Tolga. (Thesis (M.S)-Bogazici University.Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    Friction welding has been represented as a technological solid-state joining processwidely used for dissimilar material combinations with high joint strength, short mass production time and low energy characteristics. This ...
  • 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 ...
  • Production of antibacterial hydroxyapatite 
    İpekoğlu, Mehmet. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Hydroxyapatite was produced by rapid microwave synthesis method. Effects of microwave power and duration were examined on the powder morphology of the hydroxyapatite powder during the synthesis process and microwave aging ...
  • Production of ultra high molecular weight poly-ethylene / butyl rubber fibers via electrospinning 
    Öztan, Yahya Çağrı. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    This research covers the electrospinning of Ultra High Molecular Weight Polyethylene (UHMWPE) mixed with Butyl Rubber polymers. The optimum process parameters to electrospin the blend of these polymers in certain ratios ...
  • 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 ...
  • 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 ...
  • 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 ...
  • The effects of alloying elements on the microstructure and annealing behavior of the twin-roll cast AA1050 strip 
    Karakoyun, Fatih. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    There are two main routes of sheet aluminum production DC casting and hot rolling route and continuous casting and cold rolling route. DC casting and hot milling route is the conventional way of production, the process 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 ...
  • The effects of process parameters on the cell morphology of the aluminum foam 
    Uçak, Tolga. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Aluminum foams have gained a considerable amount of attention in recent years with their very low specific weight, relatively high compression strength among cellular materials combined with good energy absorption. In the ...
  • The effects of solidification conditions on the formability of the twin-roll cast AA1050 strip 
    Atlı, Kadri Can. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Twin-roll casting (TRC) is a continuous sheet metal casting process, which was developed as an alternative to the conventional “ingot casting and hot mill method” of sheet metal production. Unlike the latter method, TRC ...
  • 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 ...

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