Melih Cemal Kushan

Melih Cemal Kushan
Eskisehir Osmangazi University | ESOGU · Department of Aeronautical Engineering

Professor

About

136
Publications
94,044
Reads
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1,158
Citations
Additional affiliations
January 2015 - present
Eskisehir Osmangazi University
Position
  • Head of Department
November 2008 - September 2009
James Cook University
Position
  • PostDoc Position
Description
  • My post-doctoral study position was the control system of Auxilary Power Unit in Aircraft .
Education
September 1988 - July 1996
Eskisehir Osmangazi University
Field of study
  • Mechanical Engineering
September 1985 - July 1988
Anadolu University
Field of study
  • Industrial Engineering
September 1981 - July 1985
Dokuz Eylul University
Field of study
  • Mechanical Engineering

Publications

Publications (136)
Article
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...
Article
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...
Article
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...
Article
Full-text available
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...
Article
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...
Conference Paper
Full-text available
Sustainable and Eco-friendly Cork Composites in Aerospace Engineering Educational Perspective for Cork Composites in Aerospace Applications
Book
Full-text available
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...
Chapter
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...
Chapter
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...
Article
Full-text available
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...
Conference Paper
Full-text available
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...
Conference Paper
Full-text available
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...
Article
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...
Article
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...
Chapter
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...
Article
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...
Conference Paper
Full-text available
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...
Conference Paper
Full-text available
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...
Conference Paper
Full-text available
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.
Article
Full-text available
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...
Article
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...
Article
Full-text available
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–...
Article
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...
Article
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...
Article
Full-text available
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...
Article
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
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...
Article
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...
Article
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...
Article
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....
Conference Paper
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...
Conference Paper
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...
Article
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...
Conference Paper
Full-text available
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...
Article
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
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...
Article
Full-text available
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...
Article
Full-text available
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...
Conference Paper
Full-text available
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...
Conference Paper
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...
Conference Paper
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...
Article
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...
Article
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...
Conference Paper
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....
Article
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
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...
Article
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...
Article
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...
Conference Paper
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...
Book
Full-text available
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...
Conference Paper
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...
Conference Paper
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...
Article
Full-text available
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...
Article
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...
Article
Bu makalede size Dünyanın öbür ucu da diyebileceğimiz Avustralya'da Makine Mühendisliği eğitiminden bahsedeceğim
Article
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...
Article
Günümüzde mikrolight motorların çoğunda Rotax marka motorlar kullanılmaktadır.
Article
Mikrolightrlar günümüz sportif havacılığında yaygın olarak kullanılan araçlardır.
Article
The original version of this article unfortunately contained a mistake. The correct tables are given here.
Conference Paper
Full-text available
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...
Article
Full-text available
Ultrasonic assisted machining is a machining operation based on the intermittent cutting of material which is obtained through vibrations generated by an ultrasonic system. This method utilizes low amplitude vibrations with high frequency to prevent continuous contact between a cutting tool and a work piece. Hot machining is another method for mach...
Preprint
Full-text available
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. As a hybrid manufacturing method, hot ultrasonic...
Article
Aviation alloys exhibit superior properties such as high strength-to-weight ratio and corrosion resistance but these alloys possess poor machinability. In order to overcome this disadvantage, new machining methods (Ultrasonic assisted machining, hot machining etc.) are developed. Hot ultrasonic assisted turning (HUAT) is a new hybrid machining meth...
Article
Full-text available
Many research projects are being conducted regarding additive manufacturing technologies, which help widen their application field for the manufacturing of functional metallic parts. Additive manufacturing technologies differ in many ways, such as the form of the material used, the material addition technique employed, the type of the energy input...
Article
Single-phase shear thickening fluids (STFs) have been extensively investigated in body protective applications. However, researchers do not have long-standing past experience of multi-phase STFs in protection. In the present work, multi-phase STFs were fabricated adding different amount of silicon carbide (SiC) additives into silica and polyethylen...
Article
Quasistatic experiments and numerical simulations were performed to investigate the three-point bending behavior of different temper AA6082 tubes in this study. The effect of heat treatment on the samples was investigated by microstructural analyses. Temper designations of T6, T4 and O were applied to the samples to study the load-carrying capacity...
Conference Paper
Full-text available
In this study, we examined surface and underwater unmanned systems that have become increasingly critical technology in the use of warships. It is frequently used remote controlled mechanisms in various attack and defense systems on warships. However, remote controlled mechanisms should be examined as a separate research topic. In this direction; t...