Melih Cemal Kushan

Eskisehir Osmangazi University | ESOGU · Department of Aeronautical Engineering

Safe operation of an aircraft depends strongly on periodic inspection of high risk parts, particularly rotating parts that are subjected to complex dynamic loads. For the highest level of flight safety, maintenance rules, such as limits and intervals should be applied carefully.This paper describes the root cause of a fracture mechanism in an Cessn...

Nickel-base superalloy, Inconel 718, is a precipitation-hardening alloy used for high-temperature applications. In particular, the reputation of wrought Inconel 718 for being relatively easy to weld is generally attributed to the sluggish precipitation kinetics of the tetragonal (ª0) strengthening phase [1]. However, when the electron beam (EB) wel...

Aircraft structural parts are structure critical parts and they are exposed to various and tedious inspections from the design phase thru the end of their service life. During design phase, taking fatigue under dynamic and static loads, corrosion and aging effects into consideration, detailed calculations are performed on structural parts to be uti...

ABSTRACT Flight and Ground Safety System, which includes the occupational health and safety system and the environmental safety system; It consists of systems such as risk management, incident and accident reporting, aircraft system safety management, safety inspection, safety training and safety rewarding. These systems are very important in aviat...

This study investigates a novel concept of integrating multi-functional shear thickening fluids (M-STFs) into the core layer of a sandwich composite consisting of polyvinyl chloride (PVC) foam and aluminum face sheets to enhance the vibration damping of the structure. First, high-performance STF (60 wt% SiO2) was produced and M-STFs were created by...

Advanced composite materials have been adapted to several applications in the aerospace industry. The main advantages of advanced composites are reduced weight, superior strength, and high corrosion resistance. Apart from these advantages, vibration and thermal insulations are the other important areas that benefit from composite materials for aero...

In this chapter, we investigate the effect of reinforcing high-performance textiles with carbon nanotube (CNT)-reinforced shear-thickening fluid (STF) to improve their performance against penetration. STF is a suspension that exhibits a sudden increase in viscosity under mechanical stress, transforming from a low-viscosity liquid to a high-viscosit...

İnsansız Hava Araçlarının (İHA) emniyetli uçuşunun sağlanmasında sertifikasyon süreci büyük öneme sahiptir. İHA’ların tasarımının temel girdisi olarak dikkate alınan operasyonel şartlar ve rakiplerine göre fark yaratan kullanım karakterleri, temelde uçuşa elverişlilik bakış açısıyla Uçuşa Elverişlilik Sertifikasyonu’nun ilk adımı içinde yer ala...

Malzeme teknolojisinde meydana gelen gelişmeler hemen hemen her sektöre ciddi şekilde yön vererek katkıda bulunmaktadır. Bu sektörlerden birisi olan havacılık sektöründe de özellikle süper alaşımlar olarak adlandırılan malzemelerin kullanımı uygulama açısından kolaylık sağlamaktadır. Sektörde kullanılan tüm süper alaşımlar uygulamadaki sertif...

Ülkemizde 20 adet Uçak/Havacılık/Uzay Mühendisliği bölümü eğitim için öğrenci almakta olup, bu bölümleri çoğu son beş yılda açılmıştır. Bu yapılanmadaki en büyük sebep Uçak/Havacılık/Uzay Mühendisine son yıllarda artan taleptir. Çünkü Havacılık ve Savunma Sanayiinde büyük ölçekli gelişmeler olup, özellikle bu gelişmelerin gerçekleştiği özel v...

Yeşil havaalanları, çevreye duyarlı uygulamaları sayesinde çevre ve toplum sağlığı üzerinde önemli bir etkiye sahiptir. Bu havaalanları uçaklardan kaynaklanan karbon emisyonlarını azaltarak ve çevre dostu teknolojileri teşvik ederek daha sessiz ve daha temiz bir çevre oluşmasına katkıda bulunur, böylece hava ve gürültü kirliliğini azaltır. Ayrıca,...

On the basis of aviation sector, aircraft gas turbine engines are expected to meet the highest standards such as reliability, strength/ weight ratio, performance and service life. Hence low cost, robust, high temperature and high corrosion/ oxidation resistant materials, which are not only used in aerospace and aircraft industry, but also in ship,...

The design of a lightweight structure is extensively researched and implemented in various industries, especially in aircraft applications, and is tied to the green aviation concept. Because a smaller mass requires less lift force and thrust during flight, reducing the weight of an aircraft is an effective way to improve energy efficiency and reduc...

Bu bildiride, sivil araç zırhlaması üzerine yapılan araştırmalar ve bu alanda kullanılmak üzere tasarlanan seramik kompozit bir zırhın balistik test sonuçları sunulmuştur. Günümüzün farklı mühimmat tehdit seviyelerine karşı askeri araçlarda olduğu gibi sivil araçlarda da zırhlama çok önemli bir konu haline gelmiştir. Ayrıca ağırlığın çok önemli bir...

Teknolojinin gelişmesine paralel olarak dünyamızın çevresel dengeleri de hızla kötü yönde değişmektedir. Son yıllarda yaşadığımız doğal felaketler bunun en önemli göstergeleridir. Çünkü yaşanılan bu hızlı değişim, davranış kalıplarından, yaşam alışkanlıklarına, yapılan işlerden, gelecek planlarına kadar her alanda etkisini artarak hissettirmekte ve...

This chapter presents the state-of-the-art technology of shear thickening fluid (STF)-included vibration damping systems based on a literature survey. STF is a good candidate for vibration damping systems. Changeable rheology in STF provides excellent properties for designing anti-vibration structures. For this reason, researchers have made great e...

In this study, Armox 600T armor steel was ballistically tested against 7.62 mm  51 M61 AP projectile. The experimental design was constructed on the basis of the worst-case scenario which is the highest possible impact velocity in the multi-hit condition. The ballistic tests revealed that Armox 600T could defeat the worst-case scenario with a thic...

The Virtual Reality/Augmented Reality (VR/AR) process is a strong candidate for remote-maintenance. For an aircraft-on-the-ground (AOG) situation VR/AR can be used to figuring-out the malfunction and the whole maintenance activity can be performed by the centralized maintenance centers. The additive manufacturing machines may be integrated into VR/...

In this study, information about the use of Structural Health Monitoring (SHM) techniques in composite structures used in aircraft is given. The relationship between Structural Health Monitoring techniques and reducing aircraft maintenance costs, shortening ground maintenance times and predictive maintenance practices is explained. An evaluation...

Bu bildiride, kapalı hücreli alüminyum köpük içeren bağımsız zırh sistemi ve bu zırh sistemine uygulanan balistik test sonuçları sunulmuştur. Geliştirilen zırhta ön tarafta (mermi ile çarpışma yüzeyinde) seramik karolar kullanılmıştır. Al 5083 H131 plakalar arasında kapalı hücreli alüminyum köpük malzeme sandviç yapıda ara katman olarak yer almıştı...

Bu bildiride, kapalı hücreli alüminyum köpük içeren bağımsız zırh sistemi vebu zırh sistemine uygulanan balistik test sonuçları sunulmuştur. Geliştirilen zırhta ön tarafta (mermi ile çarpışma yüzeyinde) seramik karolar kullanılmıştır. Al 5083 H131 plakalar arasında kapalı hücreli alüminyum köpük malzeme sandviç yapıda ara katman olarak yer almıştır...

ZET Bu bildiride, Twaron CT736 kompozit destek plakalı, bağımsız (stand-alone) koruma sağlayan kompozit zırh sistemi tasarlanmış ve bu zırh sistemi için yapılan balistik test sonuçları sunulmuştur. Balistik enerjiyi daha iyi dağıtan hegzagonal şekilli silisyum karbür (SiC) seramik karolar mermi çarpma yüzeyinde kullanılmıştır. Ara tabaka malzemesi...

Dünyanın en büyük uçağı Antonov An-225 (Şekil 2), Ukrayna’yı işgal eden Rus kuvvet�leri tarafından imha edildi. Ukrayna hükümeti, Gostomel’deki havaalanının kontrolünü ele geçirilmesinin ardından uçağın imha edildiğini ifede etti. Bu arada Ukrayna dışişleri bakanı Dmytro Kuleba, “Bu, dünyanın en büyük uçağı An-225 idi. Rusya bizim ‘Mri�ya’mızı yo...

Shear thickening fluid (STF) treated textiles have been widely used in anti-impact structures in recent years. STF treatment provides an enhanced energy absorbing capacity for textiles due to increased yarn interactions within the structures. Adjacent yarns around the impact point contribute to energy distribution to far-fields. STF treated text...

Sustainable and Eco-friendly Cork Composites in Aerospace Engineering Educational Perspective for Cork Composites in Aerospace Applications

This book offers a comprehensive look at materials science topics in aerospace, air vehicle structures and manufacturing methods for aerospace products, examining recent trends and new technological developments. Coverage includes additive manufacturing, advanced material removal operations, novel wing systems, design of landing gear, eco-friendly...

Al-Li alloys are the focus of attention in the aviation industry with their high modulus of elasticity, high hardness, high fatigue crack growth resistance, and low density. These specially designed alloys are used in fuselage, fuselage beam, lower wing, and upper wing structures in aircraft. The use of Al–Li alloys is thought to be extended to dif...

In this chapter, first, basic information about the landing gear (definition, purpose, and duties, etc.) is given. Examples of different aircraft are given throughout the chapter. Systems in large aircraft such as extend-retract mechanisms are explained on Boeing 737 aircraft. As mentioned in the chapter introduction, landing gears are the elements...

Ultrasonic assisted machining is a manufacturing method which creates intermittent cutting mechanism using ultrasonic vibration. Hot machining is another technique which uses external heat source before or during machining operations. These methods help to machine difficult to cut materials such as titanium, nickel, composite materials and improve...

The importance of electronics in the automotive industry is increasing day by day. The most important feature of today's electronic systems is that many different components work in harmony. Even if the components work internally, unforeseen problems occur when they come together. Encountering this problem in the automotive industry leads to vital...

Helicopter structures may be subjected to extremely concentrated impact loads from various types o f projectiles, fragments from high-explosive warheads, and jets from shaped charge warheads during missions in combat zones. Ballistic threats include bullets from hand-held weapons and high-explosive incendiary (HEI) projectiles from shoulder weapons...

In this paper; The working principles of radar systems are given simply and new analyzes are made to minimize the trace that an aircraft will create on the radar. Instead of being directly reflected back by the radar, the radar trace is minimized when it is reflected, absorbed or compressed at different positions at different angles. Polyurethane;...

İnsansız Hava Araçları (İHA’lar) günümüzde sağladığı birçok avantaj ile çeşitli alanlarda olduğu gibi muharebe ortamlarında da önemli bir kuvvet çarpanı olarak ön plana çıkmaktadır. Üretim kolaylığı ve düşük maliyet ile temin edilebilme özelliği İHA’ların yaygın kullanımının iki temel nedenidir. 1990'ların başından beri İHA’ların savaşlardaki rolü...

This paper presents the feasibility of developing an electromechanical in-situ viscosity measurement technique by analyzing the detectability of small variations in the viscosity of different shear thickening fluids and their different compositions. Shear thickening fluid (STF) is a kind of non-Newtonian fluid showing an increasing viscosity profil...

Electromechanical impedance (EMI) method has been widely used in recent years to evaluate the condition of structures. In this method, piezoelectric sensors are added to the structure to examine material properties. The impedance/admittance signals are recorded with the aid of the impedance analyzer without any conversion. When there is any change...

Advanced polymers have been substituted for metallic materials in engineering applications due to several advantages such as low weight, improved mechanical properties and high resistance to chemical reactions. Ultra-high molecular weight polyethylene (UHMWPE) is one of advanced polymers, which is widely utilized in frictional systems due to its lo...

Purpose Increasing endurance was a very appropriate subject for the biomimetic approach. The study aims to design and manufacture a long-lasting mini unmanned aerial vehicle (UAV) using active gliding and soaring. Design/methodology/approach The endurance of mini UAVs is limited by battery or fuel capacity, and it is not always possible to increas...

Bu çalışmada uçak kompozit yapılarında kullanılan özel tahribatsız muayene (NDT) yöntemlerinden ter-mografik (TR) analiz yönteminin araştırılması ve plas-tik matrisli katmanlı kompozit malzemelerde karşılaşı-lan hata tiplerinde test parçaları üretilip termografik olarak kontrol edilebilirliğinin araştırılması amaçlan-mıştır. GİRİŞ Mühendislik malze...

Aramid is a superior reinforcer especially in composite materials. Even in materials science, it is still debated whether aramid itself is a composite. In short, Aramid is an extremely useful material in the development of composites. Therefore, military applications, especially armor applications are quite high. However, the scientific public know...

In this study, we tried to find a method to manufacture a polyurethane elastomer. For this purpose, Shape Deposition Manufacturing (SDM) is used that includes shaping and deposition to manufacture desired models. We produced a sample via this method for evaluating further testing and study on polyurethane elastomer materials.

Cork composites present interesting properties for several applications such as damping, shock absorption, crashworthiness and thermal insulation. In this work, the enhancement of their impact resistance, by means of shear thickening fluid (STF) reinforcement was studied. The analysis was carried in multi-layered structures consisting of cork lamin...

Ultrasonic inspection is a well-known method in non-destructive testing. Based on the changes in the ultrasonic sound speed, tested materials are evaluated in terms of internal defects. In addition to flaw detection, ultrasonic testing is used in the material characterization of ductile cast iron. Graphite shape detection has been widely investigat...

Biyomimetik (veya biyomimikri), karmaşık insan problemlerini çözmek amacıyla doğanın modellerinin, sistemlerinin ve öğelerinin taklit edilmesidir. Biyomimetiğin ilk örneklerinden biri, insan uçuşunu sağlamak için kuşların incelenmesiydi. Önceki sayılarda “DA VİNCİ’DEN SIKORSKY’E” isimli yazımızda detayları ile ele aldığımız Leonardo da Vinci (1452–...

Ultra-high molecular weight polyethylene (UHMWPE) is extensively used in frictional applications due to its advanced wear resistance. This advanced polymer is reinforced with hard particulate fillers for further developments against wear conditions. Since elevated temperatures prevail in the service conditions, wear behavior of UHMWPE composites...

Shear thickening fluid (STF) has been extensively utilized in various engineering applications due to its unique characteristic, which is increasing viscosity under loading. Although single-phase STF is known for a long time, STF has been introduced to a novel concept, namely multi-phase STF, which includes particle additives in the suspension. In...

1998 yılında Askeri Havacılık Editörü olduğum “Turkish Aviation” isimli uluslararası bir derginin bir sayısında “Yıllara Meydan Okuyor Emektar C-47” isimli bir makalemi gördüm. Ve birden o makaleyi yazarken içinde olduğum heyecanı hatırladım. Çünkü gerçekten de ilk uçuşunu DC-1 (Şekil 1) kodu ile 1933 yılında yapan Dakota, 65 yaşında bir uçak olara...

In recent years, machining area has seen significant advances in the world. Several research groups have been working on the design of different cutting tool development. Textured cutting tool inserts contain dimples or bumps to improve tribological properties as well as machining characteristics in the manufacturing environment. However, much unce...

Aslında daha konuya girmeden hızla böyle karamsar bir başlangıç yapmak istemezdim. Ancak gerçekten de insanlık olarak üzerimize düşen görevleri yapmazsak tüm değerlerimiz bir bir yıkılacak ve kendi sonumuzu kendimiz getireceğiz. Bu gerçeğin en büyük kanıtlarından biri de Dünya Sivil Havacılık Sektörünün hızla bir batağa saplanmasıdır. Sadece bir vi...

1765 yılında James Watt tarafından buhar gücüyle çalışan pistonlu motorlar, otomobillerin ve uçakların vazgeçilmez parçalarıdır. 2. Dünya Savaşı ile beraber gelen ve öncülüğünü Dr. Hans von Ohain ve Sir Frank Whittle'ın yapmış olduğu jet motorları çalışmaları ise havacılık dünyasına farklı bir soluk getirmiştir. Uçakların geçirmekte olduğu evrimler...

In this study, Hot Ultrasonic Assisted Turning (HUAT) of Ti6Al4V alloy was studied numerically via DEFORM-2D software. This novel machining method combines Ultrasonic Assisted Turning (UAT) and hot machining operations. Vibrational parameters were chosen as cutting parameters for the simulation study. Cutting forces, maximum effective stresses, and...

Using gliders in training both popular and cheap in civil and military aviation. Although it is cheap, all of the flight’s phases include aerobatic training can be learned by glider. For this reason, most countries use gliders in their Air Forces. Turkish Air Force also has gliders for training. In this work, quality of training and intensity of gl...

In order to fulfill the demands of civil and military aviation, aircraft industry needs to deal with various challenges. The major reasons of these challenges are the reduction of cost for aircraft and airline operations, minimizing the downtime for maintenance, decreasing the fuel consumption and thus the emissions, and fast delivery of newly deve...

In this study, hot ultrasonic assisted machining of Hastelloy-X material was compared using two different finite element software (DEFORM and AdvantEdge). The results obtained from the two software were compared in terms of maximum cutting tool temperature, average cutting force and maximum effective stresses. The simulations were performed in 2D....

t Sivil havacılıkta uçak/helikopter Bakım Onarım ve Yenileme (BOY) faaliyetleri, yolcuların ve yüklerin güvenli bir şekilde taşınması için uçağın önceden belirlenmiş uçuşa elverişlilik koşullarında olmasını sağlamak için temel bir gerekliliktir. Ticari uçak BOY pazarı ilgili ülkenin küresel filo büyüklüğü, geniş hava taşımacılığı gibi faktörlerden...

In this study, Hot Ultrasonic Assisted Turning (HUAT) of Ti6Al4V alloy was studied numerically via DEFORM2D software. This novel machining method combines Ultrasonic Assisted Turning (UAT) and hot machining operations. Vibrational parameters were chosen as cutting parameters for the simulation study. Cutting forces, maximum effective stresses, and...

Fatigue crack growth and corrosion are two important failure mechanisms for aircraft structural components and therefore, various treatments have been developed to improve the fatigue and corrosion resistance of aircraft materials. In the present study, thermo-mechanical (TM) and retrogression and re-aging (RRA) treatments were applied to AA7075T73...

In this study, Hot Ultrasonic Assisted Turning (HUAT) of Ti6Al4V alloy was studied numerically via DEFORM-2D software. This novel machining method combines Ultrasonic Assisted Turning (UAT) and hot machining operations. Vibrational parameters were chosen as cutting parameters for the simulation study. Cutting forces, maximum effective stresses, and...

Global olarak havacılık ve uzay sanayisinde gözle görülür bir ilerleme katedilmiştir. Ülkemizinde bu ilerlemelerin öncüsü olması amacıyla,bu çalışmalar hızla artmaktadır. Bilindiği üzere İnsansız Hava Araçları (İHA'lar), sabit kanatlı ve döner kanatlı olarak görevler yaparken artık roketler de İHA sınıfı araç olma-ya adaydırlar. Uzay görevlerinin v...

In this study, different non-traditional turning operations were investigated using various soft computing methods. In these operations, cutting speed, machining method, material type, and tool overhang lengths were used as machining inputs. Surface roughness, stable cutting depths, and maximum cutting tool temperatures were considered as machining...

In the present study, different turning operations (conventional, ultrasonic assisted and hot ultrasonic assisted operations) of Ti6Al4V alloy were investigated by using a new multi-criteria decision-making method. In the first part of the study, conventional turning (CT), UAT and HUAT operations were conducted, and they were compared to each other...

Bir uçağa etki eden temel kuvvet etkileri itme, sürüklenme, kaldırma ve ağırlık etkisidir. Uçak kanadı geliştiricileri, performans ve yakıt verimliliğini artırmak için kanat üzerindeki bileşenler vasıtasıyla sürüklenmeyi ve ağırlığı minimuma indirgemeye çalışmaktadırlar. Uçak kanatları, Wright kardeşler tarafından geliştirilen ilk insanlı uçak (Şek...

One of the significant process limits of laser powder bed additive manufacturing technologies is residual stresses and distortions induced by heating the fine metal powder to the melting point and sudden cooling to the initial temperature. While this phenomenon applies to most types of metal alloys, it becomes more important in nickel-based superal...

Dünya genelinde çok yaygın bir spor dalı ve tanınan bir hava aracı olsa da planör, ülkemizde hava aracı olarak ve planörcülük sporu alanında oldukça az bilinmektedir. Planörcülük ülkemizde sadece sivil olarak Türk Hava Kurumu (THK) tarafından icra edilmektedir. Tarihçesi motorlu uçuştan önceye dayanan pla-nör, süzülme uçuşunu ve doğal meteorolojik...

Using gliders in training both popular and cheap in civil and military aviation. Although it is cheap, all of the flight's phases include aerobatic training can be learned by glider. For this reason, most countries use gliders in their Air Forces. Turkish Air Force also has gliders for training. In this work, quality of training and intensity of gl...

In order to fulfill the demands of civil and military aviation, aircraft industry needs to deal with various challenges. The major reasons of these challenges are the reduction of cost for aircraft and airline operations, minimizing the downtime for maintenance, decreasing the fuel consumption and thus the emissions, and fast delivery of newly deve...

This study examines the diversity of unmanned aerial vehicles (UAVs) in recent years and the developments in these areas. The use of these aircraft in different areas, especially in military areas, has evolved rapidly. Due to this development, additional requirements emerged. At this point, the increase in these properties increased the weights of...

Ultra-high-molecular-weight polyethylene (UHMWPE) has been extensively utilized in various tribological systems due to its high wear resistance, low friction coefficient, anti-corrosion behavior and eco-friendly properties. However, the demand from the market requires further improvements to withstand the harsh conditions in the applications. For t...

Günümüzde, fabrikaların fiziksel ve dijital yapıları arasındaki farkın kalkmaya başladığını diğer bir ifade ile fabrikalarda dijital bir devrim yaşandı-ğını görüyoruz. Bu devrimin "Endüstri 4.0'a Dönüşüm" olarak isimlendirildiğini ancak tam olarak ne olduğu ve MRO hizmetlerini nasıl destekleyebileceği konusunda kafa karışıklığının devam ettiğini sö...

In this study, hot ultrasonic assisted machining of Hastelloy-X material was compared using two different finite element software (DEFORM and AdvantEdge). The results obtained from the two software were compared in terms of maximum cutting tool temperature, average cutting force and maximum effective stresses. The simulations were performed in 2D....

Yazımızın başlığı ilk bakışta bir şey ifade etme- yebilir. Entelektüel bir bakış açısı ile düşün- düğümüzde ise Da Vinci’nin “Leonardo da Vinci” olduğunu anlayabiliriz. Ama ancak bir kısmı- mız Sikorsky’nin “Igor Sikorsky” olduğunu anlarız. Aslında ikisi de bir dahi; fakat Da Vinci belki de in- sanoğlunun bir daha göremeyeceği bir dahi. Pek çok sır...

This paper investigates the influences of three different input parameters, such as feed rate, insert nose radius, and insert coating methods, in the turning operation of Inconel 718. The coating methods were selected as medium temperature chemical vapor deposition (MT-CVD) and physical vapor deposition (PVD) and in addition to coating methods, the...

Ultrasonic assisted machining uses vibrational cutting generally for finishing operations to improve surface properties of the workpiece, reduce cutting force and enhance tool life. On the other side, hot machining takes advantage of thermal softening of difficult-to-cut materials during operations. This process reduces cutting forces and increases...

In the present study, a nickel based powder, which is extensively utilized in aero-engine applications, was utilized in direct metal laser sintering operation to investigate the surface topography of additively manufactured products. Laser power, scanning speed and layer thickness were used as variable in the process and the role of each variabl...

Shear thickening fluid (STF) is a kind of non-Newtonian fluids exhibiting drastic viscosity jump under an increasing shear rate. Even though these fluids are single-phase suspensions including nano-sized particles in a carrier liquid, various additives have been included in the suspensions to form multi-phase shear thickening concept. Despite no...

Additive manufacturing technologies, depending on melting of metal powder particles layer upon layer for building 3D functional objects, have widened their application area within biomedical, automotive, aerospace and die/mold industries. Along with the increased application of additive manufacturing, a better understanding of different aspects for...

The SSJ 100 (Sukhoi Superjet 100) is an aircraft that could rival the Boeing 737, A320, Embraer developed by the Russian company Sukhoi. Russian regional jet, which made its first flight in 2008, has two models: 75 and 95 passenger capacity. However, the model with a capacity of 95 passengers can reach up to 103 passengers. Like every new aircraft...

It is well known that improvements in space and aviation are the leader of today's technology, and the aircraft is the most important product of aviation. Because of this fact, the books on aircraft are always at the center of interest. In most cases, technologies designed for the aerospace industry are rapidly extending into other areas. For examp...

One of the last products in commercial aviation belonging to China is the C919 passenger airplane. This latest product is a product made by China to enter the market, especially against the series of Airbus A320 and Boeing 737. So it is a modern passenger plane consisting of single corridor and three-row seats like its competitors. In this study, c...

In this study, an experimental study was performed for the ultrasonic-assisted turning of Ti-6Al-4V. The surface properties of titanium alloy machined by ultrasonic-assisted turning method were examined. Also, chip morphology was investigated. These measurements were compared with conventional turning operations performed with same cutting paramete...

Metal malzemelere yönelik olarak fonksiyonel parça üretimi amaçlı uygulamaları yaygınlaşan katmanlı imalat teknolojileri için araştırmalar artarak devam etmektedir. Söz konusu katmanlı imalat teknolojileri kullanılan malzeme formu, malzeme ekleme tekniği, enerji girdisi çeşidi ve proses konfigürasyonu gibi pek çok konuda farklılıklar göstermektedir...

Bu çalışma kapsamında, süperalaşım Rene 41'in tornalama işlemi, iş parçasının yüzey kalitesi ve kesici takımın aşınma davranışı açısından incelenmiştir. Bu çalışmanın deney aşamasında; kesme hızı ve ilerleme, değişken parametreler olarak kullanılmış olup etkileri, kapsamlı bir faktöryel deney tasarımındaki ana etki noktaları kullanılarak incelenmiş...

Inconel 718 ençok kullanılan türbin motor malzemelerinden birisidir.

Bu makalede size Dünyanın öbür ucu da diyebileceğimiz Avustralya'da Makine Mühendisliği eğitiminden bahsedeceğim

Gaz türbin sıcak kısım parçaları zorlu çalışma koşulları altında zamana bağlı olarak çeşitli hasarlara maruz kalmaktadır. Bu hasar türlerinden birisi olan çatlaklara türbin sabit kanatçıkları gibi parçalarda sık rastlanmaktadır. Yüksek miktarda alaşım elementleri içeren bu parçaların tamir işleminde kaynak vb. konvansiyonel proseslerin uygulanması...

Günümüzde mikrolight motorların çoğunda Rotax marka motorlar kullanılmaktadır.

Mikrolightrlar günümüz sportif havacılığında yaygın olarak kullanılan araçlardır.

The original version of this article unfortunately contained a mistake. The correct tables are given here.

Bu çalışmada yüksek performans kumaşlarının performansını arttırmak için nano süspansiyon olarak kullanılan kayma altında katılaşan sıvılara (KAKS) seramik tozları eklenerek kumaşların balistik koruma performansları incelenmiştir. KAKS üretimi için silika tozu ve polietilen glikolden yararlanılmıştır. KAKS içinde ikincil katı fazı oluşturan seramik...