Oğulcan Eren

• Master of Science
• Research Assistant at Gazi University

Digital Light Processing (DLP) techniques are being increasingly investigated to create advanced composite materials with improved properties by incorporating a variety of nanoparticles. In this study, the mechanical and electrical properties of photopolymer nanocomposite materials reinforced with carbon‐based nanoparticles produced by DLP were inv...

Purpose This study aims to address the limited understanding of the complex correlations among strut size, structural orientation and process parameters in selective laser melting (SLM)-fabricated lattice structures. By investigating the effects of crucial process parameters, strut diameter and angle on the microstructure and mechanical performance...

The Additive Manufacturing (AM) technology, which was known as rapid prototyping referring to its original usage in prototype production, is progressing fairly well toward full-scale manufacturing of final parts with improvements in precision, strength, and speed. The technology is no wonder a revolution in manufacturing as it allows significant ad...

Laser‐powder bed fusion (L‐PBF) is extensively adopted in the aerospace and automobile industries for producing metallic components. The L‐PBF process involves rapid melting and solidification of metallic powders using a laser source to produce dense parts. Most industrial L‐PBF systems use a fiber‐based laser source that emits a Gaussian beam dist...

The field of protective coatings for industrial applications is continuously evolving, driven by a need for materials that offer exceptional hardness, enhanced wear resistance, and low friction coefficients. Conventional methods of coating development, such as physical vapour deposition (PVD) and chemical vapour deposition (CVD), often face challen...

The Digital Human Modelling (DHM) method, in which the anthropometric characteristics of humans are represented using a computer-aided three-dimensional model, is used in many different ergonomic optimisation applications, especially in areas such as manufacturing, machine utilization, assembly simulation, cabin design, human-robot communication. T...

In this study, an autonomous vehicle that can avoid obstacles has been developed by using stereo imaging systems and artificial intelligence applications together. An integrated stereo camera module and NVIDIA Jetson Nano developer kit were used as computer vision system. Checkerboard calibration was performed to prevent camera distortions. The ima...

Additively manufactured complex lattice geometries incorporated in structural materials is a relatively new concept and gaining popularity. In this approach solid bodies are replaced by repeating tailored design cellular structures enabling significantly light-weighted components. However, as a building block of the entire part, these cellular stru...

Additive manufacturing (AM) technologies, also known as 3D printing, which offer advantages such as design flexibility, short lead time and cost effectiveness compared to traditional production methods, are used in many different areas. With the exponentially increasing technological developments, complex structures at micron level can be produced...

In the Powder Bed Fusion (PBF) process, which is one of the Additive Manufacturing (AM) methods based on thermal manufacturing, micron-level metal powders are melted by laser beam. In PBF, heat input and thermal distribution significantly affect the microstructure and so physical, mechanical and dimensional properties of the additively manufactured...

Seçici Lazer Sinterleme (SLS - Selective Laser Sintering) yönteminde toz partikülleri kullanılarak fonksiyonel parça üretilebilmektedir. Bu yöntem toz malzemelerin (genellikle metal tozları) lazer kullanılarak eritilmesi/sinterlenmesi ve sonrasında katılaştırılması esasına dayanmaktadır. Bu metot sarf malzeme olarak metal ya da alaşım tozlarının ya...

Günümüzde gelişen imalat yöntemleri (eklemeli imalat, dijital üretim vs.) sayesinde karmaşık geometriye sahip parçalar kolayca üretilebilir hale gelmiştir. Böylece malzeme sarfiyatı, ağırlık ve zaman gibi parametrelerin önemli ölçüde azaltılabilmesi mümkün olmaktadır. Bu gibi durumlarda (tasarım esnekliğinin sınırsız olduğu ve organik yüzeyler içer...

Vanalar su, gaz, basınç içeren ortamlarda, bu bileşenleri kontrol altına alan mekanik, elektromekanik bileşenlerdir. Su sayaçlarında yaygın olarak kullanılan küresel vanalar pirinç gövde, paslanmaz çelik küre, contalar ve tahrik milinden oluşmaktadırlar. Kürenin üst kısmında bir mil yuvası bulunmaktadır ve buraya oturan mil, motor ile tahrik verili...

İnsanoğlunun en temel gereksinimlerinden olan giyinme ihtiyacı, tekstil sektörünün doğmasına sebep olmuştur. Sanayi devrimi ile tekstil sektörü gelişmiş, malzeme ve üretim çeşitlerindeki artış sektörün ilerleyişine bir yön vermiştir. Günümüzde de teknolojinin gelişmesi ile tüketim alışkanlıklarımız seri üretimden çıkıp kişisel üretime doğru kaymakt...

Bu çalışma kapsamında, 3 boyutlu yazıcıların medikal sektörde ne gibi uygulamalarda hangi amaçlar doğrultusunda kullanıldığından bahsedilerek FDM teknolojisi ile üretilmiş bir ayak bileği ortezinin üretim aşamaları gösterilmiştir. Ayak bileği ortezi, yürümede problem yaşayan hastaların daha rahat bir şekilde hareket edebilmelerini sağlayan bir ekip...

Eklemeli İmalat (Eİ) yöntemlerinde meydana gelen gelişmelerle birlikte karmaşık geometrili nihai parçalar bile hızlı ve tek bir işlemde üretilebilir hale gelmiştir. Geleneksel yöntemler ile üretimi mümkün olmayan organik ve karmaşık geometrilerin benzer mekanik ve termal özelliklerle Eİ ile üretilebilmesi özellikle havacılık ve otomotiv gibi parça...

The integration of nanotechnology into 3D printing (3D) extends the application areas of functional engineering materials. Through the ability of Additive Manufacturing (AM) technologies to create complex 3D objects layer-by-layer, material properties can be controlled throughout the part. Functional parts can be manufactured by superior properties...

Graphene is a superior material representing the new material age following the iron and silicon era in human history. However, full capacity exploitation of this very precious material in all technological fields has not been possible with conventional processing methods. New technologies to close this gap is essential to meet this need. Three-dim...

Additive Manufacturing (AM) technologies are utilized in many different areas owing to its peculiar features such as cost-effective and quick and ease of manufacturing for complex 3D parts. Although the Fused Deposition Modeling (FDM) is the most popular and inexpensive method among other AM technologies, this method is not suitable for final part...

In recent years, with Additive Manufacturing (AM) technology, which is used in many different areas, it is possible to manufacture 3D parts in complex form more easily, inexpensively and quickly than conventional methods. Among the AM technologies, the most popular and inexpensive method is Fused Deposition Modelling (FDM). Recently there is growin...

This work presents significant mechanical and electrical property enhancement of 3D printed parts through dispersion of multiwall carbon nanotubes (MWCNTs) using twin-screw micro-compounding extruder having a backflow channel facility. The composite structure obtained has been further processed in a single screw extruder to produce 3D printing fila...

Pioneering studies on the applications of 3D printing technology and additive manufacturing have been focusing on textile and clothing sector from the last two decades. Moreover, the creative momentum of fabric-like 3D printed structures has come to the point of transforming as for the newest form of textile applications after the advent of chain-m...

Industrial Design Engineering (IDE) students at Gazi University gains considerable experience in computer aided design (CAD) applications for innovative product design in the first 3 years. An undergraduate level technical elective course developed to allow the third year students highly skilled in CAD modelling and design to further their knowledg...

Tasarıma yardımcı yazılım teknolojilerinin ilerlemiş olması önemli kolaylıklar sağlamasına rağmen, özellikle karmaşık şekilli parçaların tekrar tasarımında yaşanan güçlükleri ortadan kaldırmamaktadır. Örneğin, helis dişlilerde diş profillerinin oluşturulması önemli güçlüklere sahiptir. Tersine mühendislik yaklaşımları bu noktada önemli kolaylıklar...

Additive manufacturing (AM) allows easy, cost effective and rapid manufacture of complex shaped 3D shapes as compared to conventional methods. Among the AM technologies, the most popular and inexpensive method is Fused Deposition Modelling (FDM). Recently there is growing interest in direct manufacturing of final ready for use parts using this tech...

Additive Manufacturing (AM) can be effectively used to rapidly generate 3D prototypes and models by converting CAD files in computer environment to tangible objects. It allows easy, cost effective and rapid manufacture of complex shapes as compared to conventional methods. Among the additive manufacturing technologies, the most popular method used...