Güncel Gönderiler: Makine Mühendisliği Bölümü
Toplam kayıt 165, listelenen: 61-80
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Revision of the failed pedicle screw in osteoporotic lumbar spine: Biomechanical comparison of kyphoplasty versus transpedicular polymethylmethacrylate augmentation
(Turkish Joint Diseases Foundation, 2012)Objectives: In this study, we aimed to compare of kyphoplasty versus transpedicular polymethylmethacrylate (PMMA) augmentation biomechanically in the revision of the failed pedicle screw in osteoporotic lumbar spine. ... -
Clamp fixation to prevent unfolding of a suture knot decreases tensile strength of polypropylene sutures
(Springer, 2012)Purpose Although sutures evolved in last decade and the product spectrum broadened largely, they can be still classified into two: monofilament and multifilament. Sutures are the mainstay of orthopedic procedures like ... -
Experimental robust optimal machining of hardened AISI 420 stainless steel with Al2O3+TiCN mixed ceramic tool
(Sage Publications Ltd, 2011)The high hardness and wear resistance levels of Alumina (Al2O3)-based ceramics make them excellent choices for incorporation into cutting tools that can be used to machine hardened steels. However, their poor fracture ... -
Investigation of the design of a metal-lined fully wrapped composite vessel under high internal pressure
(Taylor & Francis Ltd, 2010)In this study, a Type III composite pressure vessel (ISO 11439: 2000) loaded with high internal pressure is investigated in terms of the effect of the orientation of the element coordinate system while simulating the ... -
Derivation of empirical equations for thermodynamic properties of a ozone safe refrigerant (R404a) using artificial neural network
(Pergamon-Elsevier Science Ltd, 2010)This study, deals with the potential application of the artificial neural networks (ANNs) to represent PVTx (pressure-specific volume-temperature-vapor quality) data in the range of temperature of 173-498 K and pressure ... -
The minimization of absolute deviation from common due date in two machine flowshop scheduling with learning effect
(Gazi Univ, Fac Engineering Architecture, 2009)The phenomenon of the learning effect has been extensively studied in many different areas of operational research. However, there have been a few studies in the general context of production scheduling; also there have ... -
Sliding Friction and Wear Behavior of Pack-Boronized AISI 1050, 4140, and 8620 Steels
(Taylor & Francis Inc, 2008)This paper describes the dry sliding friction and wear performance of boronized AISI 1050, 4140, and 8620 steels with the Fe(2)B phase coating on the surface. The studies were carried out using a pin-on-disc arrangement. ... -
Evaluation of flow behavior for clearance brush seals
(Asme-Amer Soc Mechanical Eng, 2008)The industrial applications of brush seals have been increasing due to their superior sealing performance. Advances in the understanding of seal behavior have been pushing the design limits to higher-pressure load, ... -
Sea water effect on pinned joint glass fibre composite materials
(Elsevier Sci Ltd, 2008)The effect of sea water on the bearing strength behavior of the woven glass fibre composite has been investigated experimentally. The ratio of the edge distance to the pin diameter (E/D), and the ratio of the specimen width ... -
An investigation of rolling element vibrations caused by local defects
(Asme-Amer Soc Mechanical Eng, 2008)In this paper, a shaft-bearing model is developed in order to investigate the rolling element vibrations for an angular contact ball bearing with and without defects. The shaft-bearing assembly is considered as a mass-spring ... -
Design optimization of cutting parameters when turning hardened AISI 4140 steel (63 HRC) with Al2O3+TiCN mixed ceramic tool
(Elsevier Sci Ltd, 2007)Due to their high hardness and wear resistance, Al2O3-based ceramics are one of the most suitable cutting tool materials for machining hardened steels. However, their high degree of brittleness usually leads to inconsistent ... -
Designing of a powder compressing device with vibration and investigation of compressibility of MgO powders with this device
(Elsevier Sci Ltd, 2007)One of metal matrix composite (MMC) production methods is infiltration of liquid metal into preformed reinforcement. In this method, MMCs are produced by infiltration of liquid metal into preformed reinforcement using one ... -
Determination of residual stresses based on heat treatment conditions and densities on a hybrid (FLN2-4405) powder metallurgy steel using artificial neural network
(Elsevier Sci Ltd, 2007)This paper presents a new approach based on artificial neural networks (ANNs) to determine the residual stresses in PM steel based nickel (FLN2-4405). This study consists of two cases: (i) The experimental analysis: The ... -
Modelling of yield length in the mould of commercial plastics using artificial neural networks
(Elsevier Sci Ltd, 2007)According to the yield length of a plastic, whether a mould is filled fully or not can be estimated. In this study, a new formula based on various injection parameters was developed to determine the yield length in plastic ... -
Artificial neural network application to the friction-stir welding of aluminum plates
(Elsevier Sci Ltd, 2007)An artificial neural network (ANN) model was developed for the analysis and simulation of the correlation between the friction stir welding (FSW) parameters of aluminium (Al) plates and mechanical properties. The input ... -
Prospects for future projections of the basic energy sources in Turkey
(Taylor & Francis Inc, 2007)The main goal of this study is to develop the energy sources estimation equations in order to estimate the future projections and make correct investments in Turkey using artificial neural network (ANN) approach. It is ... -
Application of ANN to explore the potential use of natural ventilation in buildings in Turkey
(Pergamon-Elsevier Science Ltd, 2007)Indoor natural ventilation provides both the circulation of clear air and the decrease of indoor temperature, especially, during hot summer days. In addition to openings, building dimensions and position play a significant ... -
Comparative study of mathematical and experimental analysis of spark ignition engine performance used ethanol-gasoline blend fuel
(Pergamon-Elsevier Science Ltd, 2007)This study consists of two cases: (i) The experimental analysis: Ethanol obtained from biomass can be used as a fuel in spark ignition engines. As renewable energy source ethanol, due to the high octane number, low emissions ... -
Calculation for the thermodynamic properties of an alternative refrigerant (R508b) using artificial neural network
(Pergamon-Elsevier Science Ltd, 2007)This study proposes a alternative approach based on artificial neural networks (ANNs) to determine the thermodynamic properties - specific volume, enthalpy and entropy - of an alternative refrigerant (R508b) for both ... -
Exergy analysis of an ejector-absorption heat transformer using artificial neural network approach
(Pergamon-Elsevier Science Ltd, 2007)This paper proposes artificial neural networks (ANNs) technique as a new approach to determine the exergy losses of an ejector-absorption heat transformer (EAHT). Thermodynamic analysis of the EAHT is too complex due to ...