Mustafa Kurt

• Marmara University

Advanced tool designs are essential for harnessing the full potential of end milling techniques, which have long served as a cornerstone of the industry. Due to the unique difficulties of designing end milling tools, where many parameters interact in complex ways, it is important to be aware of the limits of relying only on experiments and human ju...

ÖZET Bu çalışmada, statik balamdan belirli olan dairesel ve içi boş çubuk sistemlerinin, sadece eksenleri etrafında bir burulma momentine maruz kaldıkları dikkate alınarak suretiyle, sisteme ait çözüm denklemleri elde edilmiştir. Bu denklemlerin çözümü için bir takım kısıt tanımlamaları yapılarak ele alınan matematiksel modele pratik anlamda bir y...

Atık oluşumundaki artış, geri kazanım hedefini giderek büyütmekte ve buna bağlı olarak geri kazanım sürecinde sürdürülebilir yakıt olan biyogazın elde edilmesiyle birlikte bu hedefe bir adım daha yaklaşılmıştır. Biyogazın üretildiği tesislerde hem elektrik hem de mekanik güç elde edilmesi amacıyla kojenerasyon sistemleri kurulmaya başlanmıştır. Bu...

3D bioprinting provides an innovative strategy to fabricate a new composite scaffold material consisted in a porous and rough structure with using polycaprolactone (PCL), beta-tricalcium phosphate (β-TCP), and collagen as a building block for tissue engineering. We investigated the optimization of the scaffold properties based on the β-TCP concentr...

In this study, the effects of cutting parameters (cutting depth, cutting speed, cutting tip radius, feed rate, cooling liquid flowrate, rake angle, approach angle) on cutting forces, temperatures and surface roughness were compared by using dry turning and minimum quantity lubrication turning methods. With this in mind, in order to determine the ef...

For 3d printers that works using Fused Deposition Modeling (FDM) technology; It is necessary to use of support material for the production of parts which have complex geometries such as sharp sectional increments or separations. The one method that is used to avoid this problem is usually to select the most appropriate part orientation. Thus, both...

This article describes a methodology based on force distributions for predicting cutting forces in side milling 7075-T651 aluminum. The methodology includes a practical mechanism for gathering experimental data. Milling forces on each disc are measured by experimentally dividing the cutter into discs for determining the milling coefficients. Force...

It is considered that choosing a career is one of the most important decisions in human life. Because of many reasons such as family, environment, school etc. Industry and technical occupation high school to be preferred by students’ educational system is very important to adoption of developments in the world, catch up with information society and...

In this study, MQL turning performance was compared to dry conditions. The magnesium based material will be formed by applying the orthogonal cutting. The CNC Lathe shall be used for both cutting processes. The experiment used MINITAB 16 software to establish the experiment plan. In this study, workpiece was turned at cutting speeds of 230, 330 and...

In this study, we simulated the shaping of a curved root canal with the ProTaper and HeroShaper file systems using three-dimensional finite element modeling. A total of seven of the Ni–Ti rotary instruments were employed to investigate the influence of cutting geometry. A workflow was developed using the mechanical design and analysis software I-DE...

This paper presents a new and practical process simulation method to analyze surface errors caused by deflections of statically flexible flat-end mills. Milling force and surface error models are established to predict the surface error in various cutting conditions. The milling forces are predicted from the mechanistic model extended using the for...

Die parts used in automotive and aviation industry have complicated surfaces that require multiaxis machining. In machining of inclined surfaces with ball-end milling, the process is of great significance for its correctness and accuracy. In this study, Acoustic Sound Pressure (ASP) generated during the machining of a workpiece at a vertical mach...

The aim of this paper is to assess an experimental analysis of different tool-path strategies with respect to their influences on surface roughness and dimensional machining errors during free-form surface machining using experimental works. For this purpose, the machining of Al7075-T651 material, which is used in the production of free-form surfac...

Shape errors appear around the interrupted sur-face in the grinding process. In this paper, the effect of wheel grain size, grinding depth, table speed and cross feed on shape error in interrupted grinding were investigated. GS-C25 cast steel material was selected as the workpieces materials to conduct experiments. In order to evaluate the wheel an...

In this paper, the effect of grinding parameters (grain size, depth of cut, table speed and cutting width) on the shape error in the interrupted surface of GS-C25 material were experimentally and statistically investigated by using Taguchi method. A square geometry was cut into and removed from block samples by wire electrical discharge machine to...

Free-form or sculptured surface milling is one of the continually used manufacturing processes for die/mould, aerospace (especially turbine blades), precision machine design, bio-medical devices and automotive industries. Developments of machining technologies for quality enhancement of machining results have become a very important fact in current...

During the plastic injection molding process, one of the biggest challenges is shrinkage which deteriorates the quality of produced parts. To control and reduce this defect, the essential way is to perfectly determine the variables like molding parameters. In this study, the effects of molding parameters including packing pressure, melt temperature...

Reduction of the recoil forces on shotgun parts and even effects on the human body are a considerable importance during design of the semi-automatic shotgun parts. These forces are strongly affected by the dynamics of motion of rifle parts upon firing. Therefore, managing of these recoil forces would be crucial issue to produce functional, ergonomi...

Today more than ever, the molding industry demands better product quality. The quality of molded parts is crucial with regard to their functional capacity, and hence a great deal of attention should be directed towards maintaining consistent tolerances and overall dimensions. As the demand for high quality final parts continues to increase, the con...

In this study, the effect of the CO2 laser cutting process parameters (gas pressure, cutting speed, and laser power) on the dimensional accuracy and measured surface roughness of engineering plastic (PTFE and POM) materials was investigated. Cutting surface profile of specimens was examined by using an optical microscope. The surface quality of spe...

The aim of the work reported here was to utilize Taguchi methods to optimize surface finish and hole diameter accuracy in the dry drilling of Al 2024 alloy. The parameters of hole quality are analyzed under varying cutting speeds (30, 45, and 60m/min), feed rates (0.15, 0.20, and 0.25mm/rev), depths of drilling (15 and 25mm), and different drilling...

This paper deals with experimental investigation in the role of different coating, point angle, cutting parameters (cutting speed and feed rate) on the hole quality (hole size, surface roughness, roundness and radial deviation of produced hole) in drilling of Al 2024 alloy. The parameters of hole quality are analyzed under varying cutting speeds (3...

TORNALAMA İŞLEMİNDE OLUŞAN KESME KUVVETLERİNİN BULANIK MANTIK VE YAPAY SİNİR AĞLARIYLA TAHMİNİ Son yıllarda tornalama işlemi esnasında oluşan kesme kuvvetlerinin Yapay Zekâ (YZ) teknikleriyle tahmini hakkında literatürde pek çok çalışma yapılmıştır. Bu nedenle çalışmamızın giriş bölümünde kesici takıma etki eden kuvvetler ve kesme parametrelerinin...

Aluminum is used in many industries to make different products and is significant to the world economy. Structural components made from aluminum and aluminum alloys are vital to the aerospace industry and very important in other areas of transportation and building in which durability, strength and light weight are desired. Drilling process is wide...