Now showing items 1-20 of 42

    • A 2D Peridynamic Model for Failure Analysis of Orthotropic Thin Plates Due to Bending 

      Tastan, A.; Yolum, U.; Güler, Mehmet Ali; Zaccariotto, M.; Galvanetto, U. (Elsevier Science Bv, 2016)
      The present paper deals with the problem of cracks propagating in thin orthotropic flat plates under bending loads. We define the mechanical behavior of an orthotropic lamina in which shear deformation can be neglected ...
    • Additive manufacturing of Kevlar reinforced epoxy composites 

      Nawafleh, Nashat; Chabot, Jordan; Aljaghtam, Mutabe; Oztan, Cagri; Dauer, Edward; Görgülüarslan, Recep Muhammet; Demir, Teyfik; Celik, Emrah (American society of mechanical engineers (ASME), 2020-01)
      Additive manufacturing is defined as layer-by-layer deposition of materials on a surface to fabricate 3D objects with reduction in waste, unlike subtractive manufacturing processes. Short, flexible Kevlar fibers have been ...
    • Air ventilation and thermal comfort in a tramcar 

      Demir, U.; Angeneh, S.R.; Sagir, D.; Aktas, Murat Kadri (Avestia Publishing, 2019-08)
      In the present study, heating, ventilation and air conditioning (HVAC) vents of a tramcar passenger cabin were designed by utilizing computational fluid dynamics (CFD) analysis. Three dimensional and transient numerical ...
    • A parametric modeling approach for the prediction of load distribution due to fluid structure interaction on aircraft structures 

      Barutcu, A.; Görgülüarslan, Recep Muhammed (American Society of Mechanical Engineers (ASME), 2019-11)
      The Fluid Structure Interaction (FSI) is a critical multi-physics phenomenon in the aerospace applications for computing loads. Including the FSI effects on the analysis requires high computational cost. A computationally ...
    • CFD Aided Design Of Heat Transfer Plates For Gasketed Plate Heat Exchangers 

      Ozkaya, Ece; Aradağ, Selin; Kakaç, Sadık (Amer Soc Mechanical Engineers, 2014)
      In this study, three-dimensional computational fluid dynamics (CFD) analyses are performed to assess the thermal-hydraulic characteristics of a commercial Gasketed Plate Heat Exchangers (GPHEx) with 30 degrees of chevron ...
    • CFD Analysis Of 3D Flow For 1.4 Mw Francis Turbine And Model Turbine Manufacturing 

      Ayli, Ulku Ece; Kaplan, Alper; Cetinturk, Huseyin; Kavurmaci, Berat; Demirel, Gizem; Celebioglu, Kutay; Aradağ, Selin (Amer Soc Mechanical Engineers, 2016)
      Hydroenergy is one of the most useful renewable energy sources. Hydropower is a vital source as it is clean, sustainable and cost effective. Francis type hydroturbines are applicable to a wide range of head and flow rate ...
    • Chatter detection in milling with acoustic emissions and deep learning 

      Serin, G.; Gudelek, M. U.; Sener, B.; Özbayoglu, Ahmet Murat; Ünver, Hakkı Özgür (UTIS, 2019-11)
      One of the main pillars of Industry 4.0 is the use of Machine Learning algorithms to make accurate predictions of the manufacturing environment in order to make informed decisions. Deep Learning algorithm, which is a ...
    • A Combined Experimental And Computational Study For The Design Of A Low Water Consumption Cooling Tower 

      Dogan, Burak; Yilmaz, Ibrahim; Polat, Ozgur; Karabulut, Oytun; Ural, Ahmet; Uludag, Yusuf; Aradağ, Selin (Amer Soc Mechanical Engineers, 2014)
      In this study, a combined experimental and computational study for the design of a low water consumption cooling tower is performed. The purpose of the study is to reduce the water consumption without decreasing the ...
    • Computational fluid dynamics and proper orthogonal decomposition based control of flow over supersonic cavities 

      Gelisli, K.A.; Aradag, S.; Taşcıoğlu, Yiğit; Ozer, M.B. (American Institute of Aeronautics and Astronautics Inc, AIAA, 2019-05)
      A Computational Fluid Dynamics (CFD) study is conducted to investigate the unsteady, turbulent supersonic cavity flow characteristics and to control the severe effects of the flow field. Simulations of Mach 1.5 supersoni ...
    • Computational fluid dynamics simulations of windage loss in a spur gear 

      Aktaş, Murat Kadri; Yavuz, Mehmet A.; Ersan, Ali K. (American Society of Mechanical Engineers (ASME), 2018)
      Windage losses arise due to the viscous dissipation of air - oil mist flow driven by the rotating faces, sides of the gears in a gearbox. The windage losses can consume up to 3% of the transmitted power. In the open ...
    • Crashworthiness Sensitivity Analysis of Axisymmetric Rectangular Crash Absorbers with Diaphragms 

      Keskin, S.A.; Acar, Erdem; Güler, Mejhmet Ali; Altin, M. (Institute of Electrical and Electronics Engineers Inc., 2020-10)
      The main goal of this study is to analyze the effects of the wall and diaphragm thicknesses of a rectangular crash absorber on its crashworthiness performance. The crash absorber has three equally distanced diaphragms ...
    • Design and Analysis of a Lightweight Disc-Type Magnetorheological Device 

      Topcu, Okan; Taşcıoğlu, Yiğit; Konukseven, Erhan I. (Int Assoc Engineers-Iaeng, 2015)
      The focus of this paper is the weight reduction of a disc-type magnetorheological (MR) device. Two different designs are proposed and investigated via finite-element analysis (FEA) to achieve the optimum combination of ...
    • Design And Construction Of An Experimental Test Rig For Hydraulic Turbines 

      Ayli, Ece; Kavurmaci, Berat; Celebioglu, Kutay; Aradağ, Selin (Amer Soc Mechanical Engineers, 2014)
      Every turbine for every hydroelectric power plant is unique; therefore its model has to be designed using state of the art design techniques and tested before the actual prototype which is costly, is manufactured. In this ...
    • Design and fabrication of large-size FFF 3D printer 

      Serin, G.; Ünver, Hakkı Özgür; Görgülüarslan, Recep Muhammet; Kosumcu, S. S. (Middle East Technical University, 2018-07)
      Additive manufacturing, also known as “3D printing” keeps diffusing into many industries with a rapid pace. The greatest advantage of 3D printers is that it allows the designers to produce a prototype in a very short ...
    • Design Of A Flow Diverter Mechanism And A Nozzle For A Hydro Turbine Experimental Test Rig 

      Cetinturk, Huseyin; Aytac, Fatma Zeynep; Taşcıoğlu, Yiğit; Celebioglu, Kutay; Aradağ, Selin (Amer Soc Mechanical Engineers, 2014)
      Hydro turbines used in hydroelectric power plants need to be designed and tested according to the specifications of the specific power plant, mainly the head and flow rate. Their models also need to be tested according to ...
    • Dynamic Modeling of a Multiple Launch Rocket System 

      Sert, Serdar; Taşcıoğlu, Yiğit (Int Assoc Engineers-Iaeng, 2015)
      Multiple Rocket Launcher Systems (MLRS) are used to aim rockets to the desired elevation (pitch) and azimuth (yaw) angles in order to hit targets. In this paper, a dynamic model for an MLRS with electromechanical actuators ...
    • Effect of free-play and initial conditions on aeroelastic behavior of a missile canard in supersonic flow 

      Ozcatalbas, M.; Acar, B.; Uslu, Sıtkı (American Institute of Aeronautics and Astronautics Inc, AIAA, 2020-06)
      Canards are used as control surfaces and they operate with control systems including actuators, drivelines and electronics in missiles. Aeroelastic behavior of the canards must be accurately known to comply with the control ...
    • Electro-Mechanical Control Loading System For Rotary Wing Aircraft Simulators 

      Aygun, Mehmet Murat; Taşcıoğlu, Yiğit; Genc, Gursoy; Altunay, Mustafa (Amer Soc Mechanical Engineers, 2014)
      The focus of this paper is on the development of a high-fidelity electro-mechanical Control Loading System (CLS) for a rotary wing aircraft simulator. CLS is one of the major components of a flight simulator. It is used ...
    • Estimation of parameters for the free-form machining with deep neural network 

      Serin, Gokberk; Gudelek, M. Ugur; Özbayoğlu, Ahmet Murat; Ünver, Hakkı Özgür (IEEE, 2017)
      Predictive Analytics is a crucial part of a Big Data application. Lately, developers have turned their attention to deep learning models due to their huge success in various implementations. Meanwhile, there is lack of ...
    • Experimental and numerical investigation of stress concentration and strength prediction of carbon/epoxy composites 

      Özaslan, Emre; Acar, Bülent; Güler, Mehmet Ali (Elsevier B.V., 2018)
      Unidirectional composites are very popular structural materials used in aerospace, marine, energy and automotive industries, thanks to their superior material properties. However, the mechanical behavior of composite materials ...