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Bulunan: 355 Adet 0.002 sn
Yayın Dili : eng ✕
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Erişime Açık

Aging Heat Treatment of Additive Manufacturing Maraging Steels in Nitrogen Containing Atmospheres

Derya Çakan

Additive Manufacturing (AM) is a manufacturing method that pushes the limits of imagination and eliminates the question of whether complex industrial products can be produced that cannot be obtained with traditional manufacturing methods. In this study, microstructure and mechanical properties of maraging steels produced by DMLS method and aged in different durations (6 and 9 hours) and atmospheres (Air, N2 and N2/H2) were investigated. When the SEM images were examined, it was ob-served that the molten pool boundaries did not disappear completely but became blur-red with increasing temperatur ...Daha fazlası

Yüksek Lisans 2023 Onur Ertuğrul İzmir Katip Çelebi Üniversitesi Fen Bilimleri Enstitüsü 4 Görüntülenme
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Evaluation of Polymeric Composite Material Alternatives for Metal Fulcrum Ring Part Used in Dry Friction Clutches

Ibrahim Can KAYMAZ

As same as in other industries, the automotive industry is one of the industries that expects continuous improvements. In this context, it is very important to integrate new technologies into the industry and to use new, alternative materials for industrial products. With the increase of these studies, cost and weight reduction are improved while serious advantages are obtained by maintaining the product's performance. The suitability of production with additive manufacturing of the fulcrum ring, which is a sub-component of the clutch cover assembly in the dry friction clutch system, acts as a ...Daha fazlası

Yüksek Lisans 2022 M. Özgür Seydibeyoğlu Fen Bilimleri Enstitüsü 8 Görüntülenme
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Nonlinear viscoelastic properties of nano and micro sized clay suspensions Nano ve mikro boyutlu kil süspansiyonlarının doğrusal olmayan viskoelastik özellikleri

Ülker, Ceylan

ABSTRACTClay colloids and suspensions are distinguished from other colloidal minerals by wide ranges of application area. Clay-based colloidal systems are frequently used in various industries, including cosmetics, oil industry, medicine, pharmacy, catalysis, textiles, remediation, and food packaging. Mechanical and thermo-structural properties of these systems provide valuable information in terms of some important criteria such as shelf life, gelation process, and degradation time. The foucus point of this study is to consider the application of water-clay suspensions in drilling fluid more ...Daha fazlası

Yüksek Lisans 2022 Ali Ettehadi Graduate School of Natural and Applied Sciences 14 Görüntülenme
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Spatiotemporal analysis framework for ıdentifying emerging hot spots and energy potential from livestock manure in Turkey Türkiye’deki hayvan gübresinin yoğun olarak bulunduğu bölgelerin ve bu bölgelerin enerjipotansiyellerinin mekansal ve zamansal analizler ile belirlenmesi

Ruhbaş, Büşra Yüksel

ABSTRACTBiogas technology offers both an environmentally sustainable solution for livestock manure and generates renewable energy. Renewable energy production from livestock manure highly depends on the feedstock availability therefore, the spatial and temporal variability of livestock manure is critical for sustainable management of livestock manure via biogas plants. In this regard, this study aims to develop a replicable geographic information system-based spatiotemporal method to determineemerging hot spots and power capacities for new biogas plants and capacity expansion for the existing ...Daha fazlası

Yüksek Lisans 2022 Sedat Yalçınkaya Graduate School of Natural and Applied Sciences 14 Görüntülenme
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The impacts of governance on tourism: a macro perspective Yönetişimin turizm üzerindeki etkileri: makro bir perspektif

Can, Yağmur

ABSTRACTIn this study, the effects of world governance indicators on tourism were empirically analysed, from the 2005 to 2018 period. A literature review for governance is included in the first part. The second part contains the definition of world governance indicators (WGI). In the last part, panel co-integration, and causality analysis have been carried out worldwide within 137 countries. As a result of the analysis, a long-run relationship was found only between the change in the number of tourists and the political stability - no violence index. Also, other world governance indexes voice ...Daha fazlası

Yüksek Lisans 2022 Mehmet Emre Güler Graduate School of Natural and Applied Sciences 26 Görüntülenme
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Analyzing gastronomy influencers' views about gastronomy tourism Gastronomi odakli sosyal medya kanaat önderlerinin gastronomi turizmi hakkında görüşlerinin incelenmesi

Ertamay, Selin

ABSTRACTAlthough gastronomy has always been a significant component of tourism products and tourist experience, with the changing tourist motivations and tourism trends gastronomy tourism has developed as a major type of alternative tourism all around the world since the 90s. Today, gastronomic values of the destinations attract many tourists and governments pay importance to gastronomy tourism as a tool in increasing for their tourism incomes. Social media is a digital platform that make individuals able to digitally interact with each other based on their interests. It has modified the way o ...Daha fazlası

Yüksek Lisans 2022 Mehmet Emre Güler Graduate School of Natural and Applied Sciences 8 Görüntülenme
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Investigation of gold nanoparticle doping onthe sensing properties of polypyrole based conducting polymer

Abdullah Bayram

Besides human health, toxic gases are harmful for both animal and plant health. Various concentrations cause so many fatal or permanent problems. Therefore, controlling toxic gases (carbon monoxide, carbon dioxide, ammonia), and oxygen at the indoor environment is of vital importance. In this study, effect of gold nanoparticle doping on the gas sensing properties of pyrrole-based conductive polymers were investigated via acoustic wave and electrical based techniques. In this study, quartz crystal microbalance technique was used. Quartz Crystal Microbalance is a powerful technique for nano scal ...Daha fazlası

Yüksek Lisans 2014 Salih OKUR Graduate School of Natural and Applied Sciences 9 Görüntülenme
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Tabakalı kompozitlerin burkulma karşıtı davranışlarının differential evoluation ve simulated annealing metodları ile optimum tasarımı

Akçair, Mehmet

xi, 51 sayfa : table, figure 29 cm. 1 CD

Yüksek Lisans 2017 Levent Aydın Graduate School of Natural and Applied Sciences 14 Görüntülenme
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Axisymmetric deformation of drops through tubes with asymmetric constrictions Asimetrik daralmalara sahip borularda damlaların aksisimetrik deformasyonuÖz

Kaya, Büşra

ÖZETDaralan tüp ve borulardaki damla deformasyonu, gözenekli ortamlarda, mikro akışkan cihazlarda vb. önemli bir rol oynar. Damlalar, viskozite oranına, Kapiler sayısına, damla hacmine ve daralma geometrisine bağlı olarak kopma mekanizması ile parçalanabilir. Simetrik tek/periyodik daralmaları dikkate alan önceki çalışmalardan farklı olarak, gözenekli ortamlarda doğal olan veya deformasyon ve/veya parçalanma mekanizmasının kontrolü için mikro akışkan cihazlarda kullanılabilen asimetrik daralmaya sahip bir tüp modelliyoruz. Aksi-simetrik sınır integral denklemlerini kullanarak damlanın gelişimi ...Daha fazlası

Yüksek Lisans 2022 Sercan Acarer Graduate School of Natural and Applied Sciences 9 Görüntülenme
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Development of MWCNT nano-composite materials as gas sensor Çok duvarlı karbon nanotüpler ile nanokompozit malzemelerin gaz sensörü olarak geliştirilmesi

Uğur Acar

xx, 85 sayfa : şekil, tablo 29 cm.

Yüksek Lisans 2017 Şerafettin Demiç Graduate School of Natural and Applied Sciences 7 Görüntülenme
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Investigation of the adhesive-bonded aluminum-polyamide hybrid joints Yapıştırıcı ile birleştirilmiş alüminyum-poliamid hibrit bağlantıların incelenmesi

Batıkan Kandemir, Miray

ABSTRACTToday, environmentally friendly, high-strength and lightweight engineering materials are becoming increasingly important for the automotive and aviation industries. For this purpose, it is critical to combine different materials correctly and to create a reliable hybrid structure. Adhesives have a huge market share among the joining methods due to their low-stress concentration, high formulation possibility, good fatigue resistance, and sealing advantages. However, surface properties and surface treatments play an active role in determining joint performance. In this thesis, the effect ...Daha fazlası

Yüksek Lisans 2022 Özgür Seydibeyoğlu Graduate School of Natural and Applied Sciences 29 Görüntülenme
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Optimizing the load carrying performance of the hydraulic guiding elements with finite elements method

Tanyeri, Cem

ÖZETHidrolik ve pnömatik sistemlerin uzun süreli sorunsuz çalışmasında önemli bir etkiye sahip olan kılavuz elemanlar, hidrolik ve pnömatik silindirlerde eksene dik olan kuvvetlere direnerek metal-metal temasını önlemek için kullanılır. Kılavuz elemanlarda en sık kullanılan malzemelerden biri olan kompozit malzemelerde, fiber yönelimleri ve takviye malzeme oranları gibi farklı parametreler, ürünün kalitesini ve mukavemetini büyük ölçüde etkiler. Bu çalışmada, kompozit kılavuz elemanların sonlu elemanlar yöntemi kullanılarak malzemeden ürüne geçiş aşamalarının ve Digimat, Moldex3D ve MSC Marc p ...Daha fazlası

Yüksek Lisans 2022 Özgür Seydibeyoğlu Graduate School of Natural and Applied Sciences 10 Görüntülenme
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