• Sustainable Supplier Evaluation in an Automotive Company Using Fuzzy Multi-Criteria Decision-Making Methods 

  Şişman, Tuǧçe; Kiriş, Sinem Büyüksaatçi; Yilmaz, Dilek (World Scientific Publishing, 2022)

  Sustainable supplier management literature is mainly on sustainable supplier selection but sustainable supplier performance monitoring & evaluation studies are scarce. Furthermore, the studies do not differentiate the ...

• Mid-infrared optical coherence tomography as a method for inspection and quality assurance in ceramics additive manufacturing 

  Zorin, Ivan; Brouczek, Dominik; Geier, Sebastian; Nohut, Serkan; Eichelseder, Julia; Huss, Guillaume; Schwentenwein, Martin; Heise, Bettina (Elsevier, 2022)

  In the past decade, significant progress has been made in ceramics additive manufacturing (AM). Material research and the rapid evolution of high-resolution printing technologies enabled the production of high-quality, ...

• On Z-Symmetric Manifold Admitting Projective Curvature Tensor 

  Yavuz Taşçı, Ayşe; Özen Zengin, Füsun (DergiPark, 2022)

  The object of the present paper is to study the Z-symmetric manifold with the projective curvature tensor. At first, we study the case of Z-tensor and projective Ricci tensor being of Codazzi type. Next, we consider recurrent ...

• Failure Analysis of ATV Axles 

  Yavuz, B.; Vural, M. (Springer, 2022)

  Indexed keywords Abstract In this study, failure analysis of the axle of a 4-wheeled vehicle was carried out. The part broke during daily use, causing an accident. The axle is made of 4340 alloy steel material. In order ...

• Separating Agricultural Goods with Image Processing and Fuzzy Inference Systems 

  Atasoy, B.; Demir, E.; Aksu, Ç. (Springer Verlag, 2021)

  Fuzzy logic inference systems that give effective results about the model in systems that are difficult to establish a model; respectively, it starts with defuzzification the data structurally. Later, it enables the ...

• INVESTIGATING THE THERMAL AND STRUCTURAL RESPONSES IN HARD-FACING APPLICATION WITH THE GTAW PROCESS 

  Savaş, Atilla (Institute of Mechanics, 2021)

  The gas tungsten arc welding (GTAW) process is an excellent way of performing quality hard-facing applications. The residual stresses and distortions are encountered in hard-facing. There are several methods to decrease ...

• Spacetimes admitting the Z-symmetric tensor 

  Zengin, Füsun Özen; Taşçı, Ayşe Yavuz (Natl Inquiry Services Centre Pty Ltd, 2020)

  This paper aims to introduce the spacetimes admitting the Z-symmetric tensor. We investigate the properties of these spacetimes for a perfect fluid and a pressureless perfect fluid (a dust). Some theorems about the properties ...

• Kademeli Kayar Artımlı Şekillendirme Yöntemi ile Parça Üretiminin Optimizasyonu 

  Önal, Ümit; Seçgin, Ömer; Özsert, İbrahim (2020)

  Bu çalışmada kayar artımlı şekillendirme metodu kullanılarak,farklı açı artımlarıyla,kademeli şekillendirme yapılarak duvar açısı dik olan parçanın üretimoptimizasyonu yapılmıştır.Çalışma kapsamındasinyal/gürültü analizi ...

• DKP37 Sacının Kayar Artımlı Şekillendirme (TPIF_RL) Yöntemiyle Şekillendirme İşleminin Taguchi ve Cevap Yüzey Metodu ile Optimizasyonu 

  Seçgin, Ömer; Özsert, İbrahim (2019)

  Artımlı şekillendirme yöntemi metal endüstrisinde kullanılan hızlı ve ucuz bir prototip üretim yöntemidir. Bu yöntem değişik endüstri alanlarında geniş bir kullanım potansiyeline sahiptir. Bu çalışmada; DKP37 sacının TPIF_RL ...

• Sürtünme Karıştırma Kaynağı Yapılmış Alüminyum Alaşımlarının Isı Akışının Modellemesi ve Pratik Doğrulaması 

  Savaş, Atilla; Pamuk, Mehmet Turgay (2017)

  Bu makalede AA 6061-T6 alüminyum alaşımının sürtünme karıştırma kaynağının Comsol Multiphysics 3.5a ile yapılan üç boyutlu modellemesi anlatılmıştır. Simülasyon kaynak edilecek iki alüminyum levhasını, kaynak takımını ve ...

• Selection of welding conditions for minimizing the residual stresses and deformations during hard-facing of mild steel 

  Savaş, Atilla (Brodarski Institute, 2021)

  Hard-facing process is widely used for improving the wear resistance of mild steel. During the application of hard-facing, due to high temperatures, residual stresses and deformations may occur. The tensile residual stresses ...

• Analysis of the residual stresses and deformations during the autogenous GTAW process 

  Savaş, Atilla (Emerald Group Publishing Ltd, 2021)

  Purpose The gas tungsten arc welding (GTAW) process is a widely used process that produces quality weldments. But the high heat generation from the GTAW arc can cause extreme temperatures as high as 20,000 degrees C. The ...

• Numerical simulation of pressure loss in porous media in oscillating flow 

  Pamuk, Mehmet Turgay (World Scientific and Engineering Academy and Society, 2018)

  In this study, the pressure loss in two types of porous media for both unidirectional and oscillatory flows is analyzed using commercial software Comsol©. The numerical results are compared with those obtained in the ...

• Hydrodynamic aspects of oscillating flow through porous media consisting of steel spheres 

  Pamuk, Mehmet Turgay; Özdemir, M. (Springer International Publishing, 2014)

  Hydrodynamic aspects of oscillating flow through porous media are investigated within the scope of this experimental work where water is used as the flow medium. Friction factors are found reducing the data of hydrodynamic ...

• A Practical Tool for Evaluating Refrigeration Systems Using R-134a 

  Pamuk, Mehmet Turgay; Savaş, Atilla (2017)

  Bu teorik çalışmada R-134a (Tetrafloretan, klor içermeyen bir soğutucu akışkan) kullanılan buhar sıkıştırmalı soğutma çevrimi 100-200 kPa buharlaştırma basıncı aralığında, 0.8-1.6 MPa yoğuşturucu basıncı aralığında olmak ...

• Data-Driven Generative Design Integrated with Hybrid Additive Subtractive Manufacturing (HASM) for Smart Cities 

  Dilibal, S.; Nohut, Serkan; Kurtoğlu, C.; Owusu-Danquah, J. (Springer, 2021)

  Generation of smart cities that considers environmental pollution, waste management, energy consumption and human activities has become more important in recent years since it was first introduced in the 1990s. In the smart ...

• Three-parameter (3P) weibull distribution for characterization of strength of ceramics showing R-Curve behavior 

  Nohut, Serkan (Elsevier Sci Ltd, 2021)

  Strength distribution of advanced ceramics is commonly characterized by two-Parameter (2P) Weibull distribution. However, deviation of strength distribution from 2P-Weibull distribution may occur in ceramics due to various ...

• Fuel or acceleration: A pareto design procedure for ships 

  Çalışal, Sander M. (CRC Press/Balkema, 2018)

  Ship design, as all other designs, is continuously changing. The design method used in this study is to calculate ship resistance and ship motion with algorithms and then to calculate the dynamic effects such as acceleration, ...

• Multi Objective Design of Ships; A Pareto Procedure 

  Çalışal, Sander M. (Springer Science and Business Media Deutschland GmbH, 2021)

  The design calculations for a displacement type vessel and for a planing hull are done for the main dimensions, starting with a fuel and acceleration criteria. A large number of vessels are simulated with the help of ...

• Weighted approximation by q-Ibragimov-Gadjiev operators 

  Herdem, Serap; Büyükyazıcı, İbrahim (Univ Osijek, Dept Mathematics, 2020)

  The present paper deals with a q-generalization of Ibragimov-Gadjiev operators, which were constructed by Ibragimov and Gadjiev in 1970. We study convergence properties on the interval [0, infinity) and obtain the rate of ...

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