Makine Mühendisliği
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Erosion Resistance of CFRP Composite Materials with Different Fiber Weaves Exposed to Cryogenic Treatment
(Taylor Francis, 2020-10-14)Carbon fiber–reinforced polymers (CFRPs) are often exposed to solid particle erosion wear due to small particles moving freely in the atmosphere or in the environment and their impact on aircraft bodies. In this study, ... -
Çok değişkenli optimizasyon ile organik Rankine çevrim verimini etkileyen parametrelerin hassasiyet ve katkı oranlarının tespiti
(Pamukkale University Journal of Engineering Sciences, 2023)Bu çalışmada, Organik Rankine Çevrimi (ORÇ) üzerinde etkisi olan performans parametrelerinin hassasiyet seviyeleri ve katkı oranları belirlenmiştir. Performans parametreleri evaporatör-kondenser pinch point sıcaklık farkı ... -
Jeotermal ısı kaynaklı Organik Rankine Çevriminde kuru ve izantropik akışkanların çevresel etkilerinin ve termodinamik performanslarının karşılaştırılması
(GUFBD / GUJS Gümüşhane Üniversitesi FBD, 2022)Organik Rankine Çevrimi (ORÇ), düşük sıcaklık aralığında su yerine organik akışkanın kullanıldığı bir elektrik üretim sistemidir. ORÇ, elektrik üretmek için atık ısıyı değerlendirmek amacıyla santrallerde kullanılmaktadır. ... -
Determination of Optimum Pinch Point Temperature Difference Depending on Heat Source Temperature and Organic Fluid with Genetic Algorithm
(Academic Platform Journal of Engineering and Smart Systems (APJESS), 2022)In this study, the effect of evaporator pinch point temperature difference (∆TPP,e) value in Organic Rankine Cycle (ORC) on system performance was determined. Under different applications of ORC, optimum ∆TPP,e value has ... -
ORÇ ile Düşük Sıcaklıklı Isı Kaynaklarından Elektrik Üretilmesinde Islak ve Yeni Nesil Akışkanların Çevresel ve Termodinamik Performanslarının Karşılaştırılması
(NEÜ FMBD, 2021)Organik Rankine Çevrimi (ORÇ), termal enerjiyi elektrik enerjisine dönüştüren, yüksek oranda erişilebilir, yaygın olarak kullanılan bir enerji üretim şeklidir. ORÇ’de, türbin jeneratörü termal enerjiyi önce mekanik ... -
Prediction and sensitivity analysis under different performance indices of R1234ze ORC with Taguchi’s multi-objective optimization
(Case Studies in Thermal Engineering, 2020)In this study, parametric optimization and sensitivity analysis of performance parameters were performed for the Organic Rankine Cycle (ORC) system at 120 °C heat source temperature. R1234ze, which is called the new-generation ... -
Alternative System Design for High Temperature Solid Particle Erosion Wear Problem
(Springer, 2021-01-30)In order to simulate the wear behavior of materials subjected to solid particle erosion due to high temperature as well as velocity effect in operating conditions such as power plants and jet engines, ASTM G76 standard ... -
Farklı Bağ Kaplama Uygulamalarının Yüksek Sıcaklık Ve Katı Partikül Erozyon Aşınmasına Etkisi
(Mühendis ve Makina, 2022-06-09)Inconel 718 altlık malzeme üzerine iki farklı bağ kaplama (NiCrAlY ve NiCoCrAlY), Atmosferik Plazma Sprey (APS) ve Yüksek Hızlı Oksi-Yakıt Püskürtme (HVOF) yöntemleri kullanılarak uygulanmıştır. Enerji dönüşüm santralleri, ... -
Erosion of ceramic coating applications under the influence of APS and HVOF methods
(Springer, 2022-11-02)The erosion wear of the thermal barrier coating (TBC) application created by the ceramic topcoat effect on the substrate material and the high-temperature resistance has been researched in the study. Solid particle erosion ... -
The effect of nanoclay particles on the incubation period in solid particle erosion of glass fibre/epoxy nanocomposites
(Wear, 2020-03-15)During erosion tests of glass fibre/epoxy nanocomposites, an incubation period emerged because of the embedding of abrasive particles into the target material. In this study, the effect of this period on solid particle ... -
Methyl methacrylate in external fixation of supracondylar humerus fractures: An experimental study
(Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 2018-08-24)Supracondylar humerus fractures are common fractures around the elbow. Open fractures, comminuted metaphyseal fractures and also fractures with bone loss may need to be treated with external fixators. The aim of this study ... -
Effect of Cooling Intensity and Position on Solidification in Semi-Continuous Casting of Copper
(Open Journal of Fluid Dynamics, 2016-09-13)Cooling heat flux effect in both primary and secondary cooling zone has been studied in semi-continuous casting of copper billet. Sufficient cooling is essential to reduce casting defects and to get high productivity, ... -
Study Gas Flow Heating In Micro-Nozzle Through Walls Instead Of Preheating
(2016-07)Previously, Preheating has been established in micro-nozzles to increase the specific impulse of thrusters and increase thrust level. However, heating may cause higher viscous losses in micro-nozzles working at low Reynolds ... -
Optimization of secondary cooling percentage during semi-continuous copper casting process
(Begell House, Inc., 2017-02-16)Sufficient cooling is essential to reduce casting defects and to get high productivity in semi-continuous casting of copper billet. On the other hand, low rate solidification is desired in order to develop coarser grain ... -
Bifilms And Hot Tearing Of Al-Si Alloys
(Shape Cutlng: 6th lntenudlmud Symposiam, Springer Link, 2016-01-01)Hot tearing is one of the most interesting defects that can be found during casting of aluminium alloys. The definition of this defects has some uncertainties such as “it does not always appear under apparently identical ... -
Grain Refinement, Modification, Degassing and Melt Quality Relationship in Al-7Si-0.3Mg
(2014-01-01)In this work, Al-7Si-0.3Mg alloy was studied. The alloy conditions was selected to be as-received, AlB3 grain refined and Sr modified. For each parameter, castings were made before and after degassing. In order to quantify ... -
Effect of Sr and Ti Addition on the Corrosion Behavior of Al-7Si-0.3Mg Alloy
(Archives of Foundry Engineering, 2017-02-23)In the present study, the corrosion behaviour of A356 (Al-7Si-0.3Mg) alloy in 3.5% NaCl solution has been evaluated using cyclic/potentiodynamic polarization tests. The alloy was provided in the unmodified form and it was ... -
Characterization of the Effect of Melt Treatments on Melt Quality in Al-7wt %Si-Mg Alloys
(METALS, 2017-04-29)The effects of degassing, holding time and melt additions (Sr, Sr + Ti, Ti, B and B + Sr) on the quality of A356 melts were examined. A total of 120 reduced pressure test samples were collected. Pores in these samples were ...