Browsing Makine Mühendisliği Bölümü / Department of Mechanical Engineering by Issue Date
Now showing items 1-20 of 198
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Akışkan Gücü Kontrolü Teorisi
(TOBB Ekonomi ve Teknoloji Üniversitesi, 1995)Akışkan gücü kontrol elemanları ve bunların uygulamalarıyla ilgili olarak, gerek akademik çevreler, gerek firmalar tarafından hazırlanmış çeşitli Türkçe eğitim kitapları ülkemizde halen kullanılmaktadır. Bu kitabın amacı ... -
Aircraft Structural Safety : Effects of Explicit and Implicit Safety and Measures Uncertainty Reduction Mechanisms
(University of Florida, 2006)Aircraft structural safety is achieved by using different safety measures such as safety and knockdown factors, tests and redundancy. Safety factors or knockdown factors can be either explicit (e.g., load safety factor of ... -
The frictional contact problem of sliding rigid parabolic stamps on graded materials
(2008-02)This study presents an analytical procedure to determine the contact stress distribution at the surface of an FGM coating perfectly bonded to a homogeneous substrate. The coating is assumed to be loaded by a rigid stamp ... -
A criterion for the onset of void coalescence under combined tension and shear
(Pergamon-Elsevier Science Ltd, 2012-07)Depending on the relative positions of voids and on the loading conditions, shear loading components can play an important role in the void coalescence process leading to ductile fracture. Yet, most void coalescence criteria ... -
Effects of the correlation model, the trend model, and the number of training points on the accuracy of Kriging metamodels
(Wiley-Blackwell, 2013-11)This paper explores the effects of the correlation model, the trend model, and the number of training points on the accuracy of Kriging metamodels. Gaussian correlation models are found to be superior to exponential and ... -
Reliability prediction through guided tail modeling using support vector machines
(Sage Publications Ltd, 2013-12)Reliability prediction of highly safe mechanical systems can be performed using classical tail modeling. Classical tail modeling is based on performing a relatively small number of limit-state evaluations through a sampling ... -
A Combined Experimental And Computational Study For The Design Of A Low Water Consumption Cooling Tower
(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 ... -
Design Of A Flow Diverter Mechanism And A Nozzle For A Hydro Turbine Experimental Test Rig
(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 ... -
Electro-Mechanical Control Loading System For Rotary Wing Aircraft Simulators
(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 ... -
Design And Construction Of An Experimental Test Rig For Hydraulic Turbines
(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 ... -
A Case Study Of Combustion Modeling In A Spark Ignition Engine Using Coherent Flame Model
(Turkish Soc Thermal Sciences Technology, 2014)In this study, a computer simulation was performed, to visualize fluid flow and combustion characteristics of a single cylinder spark ignition engine. The complete engine cycle process (inlet, compression, expansion and ... -
A Comparative Evaluation On Nanofluid Viscosity
(Turkish Soc Thermal Sciences Technology, 2014)Nanofluids are advantageous due to their superior thermophysical properties compared to base fluids. Increasing nanoparticle concentration increases thermophysical properties. However, viscosity enhancement results in ... -
Possible usage of cannulated pedicle screws without cement augmentation
(Hindawi Ltd, 2014)BACKGROUND: The use of pedicle screws is becoming increasingly popular for spinal surgery practice as the technology advances. Screw pullout due to bone quality and loading conditions is one of the most common problems ... -
CFD Aided Design Of Heat Transfer Plates For Gasketed Plate Heat Exchangers
(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 ... -
The effect of material property grading on the rolling contact stress field
(Pergamon-Elsevier Science Ltd, 2014-01)This paper investigates the subsurface stress field induced by a rigid cylinder rolling over a functionally graded coating-substrate system. The Fourier transform is employed to extract the stress components within the ... -
On the contact mechanics of a rolling cylinder on a graded coating. Part 1: Analytical formulation
(Elsevier Science Bv, 2014-01)In this paper, the fully coupled rolling contact problem of a graded coating/substrate system under the action of a rigid cylinder is investigated. Using the singular integral equation approach, the governing equations of ... -
Effect of swaging on microstructure and tensile properties of W-Ni-Fe alloys
(Elsevier Sci Ltd, 2014-01)The objective of this study was to investigate the effect of swaging on the microstructure and tensile properties of high density two phase alloys 90W-7Ni-3Fe and 93W-4.9Ni-2.1Fe. Samples were liquid phase sintered under ... -
Experimental comparison of performances of three different plates for gasketed plate heat exchangers
(Elsevier France-Editions Scientifiques Medicales Elsevier, 2014-01)In this study, an experimental set-up for testing chevron type gasketed plate heat exchangers is utilized to investigate the thermal and hydraulic characteristics of three different plate geometries. The experiments are ... -
Multi-objective robust design of energy-absorbing components using coupled process-performance simulations
(Taylor & Francis Ltd, 2014-02-01)The stochastic uncertainties associated with the material, process and product are represented and propagated to process and performance responses. A finite element-based sequential coupled process-performance framework ... -
Simultaneous optimization of shape parameters and weight factors in ensemble of radial basis functions
(Springer, 2014-06)Radial basis functions (RBFs) are approximate mathematical models that can mimic the behavior of fast changing responses. Different formulations of RBFs can be combined in the form of an ensemble model to improve prediction ...
