Güncel Gönderiler: MF - Makale Koleksiyonu | Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Toplam kayıt 24, listelenen: 1-20
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Jet motorlarinda uygulanan efüzyon film soğutma akış karakteristiklerinin PIV yöntemiyle incelenmesi
(Sürdürülebilir Havacılık Araştırma Derneği, 2018-12-01)Efüzyon soğutma tekniği, modern yanma odalarında kullanılan en gelişmiş soğutma teknolojisidir. Bu çalışmada 1/9 ölçekte boyutlandırılmış bir yanma odası cidarında, efüzyon film soğutmanın ana akım üzerine etkileri Parçacık ... -
Sıcak dövme kalıplarına infrared (kızılötesi) yöntemi ile ön ısıtma uygulanmasına yönelik deneysel ve teorik analiz
(Makina Tasarım ve İmalat Derneği, 2020-09-19)Sıcak dövme işlemi, üretim teknolojisinin önemli bir parçasınıoluşturur. Sıcak dövmede uygulanan ısı enerjisi ile parçanın akmadayanımı azalır böylelikle şekil verme kabiliyeti artarak daha karmaşıkgeometrili parçaların ... -
A cooperative neural network control structure and its application for systems having dead-zone nonlinearities
(Springer International Publishing Ag, 2022-03)An adaptive control structure utilizing two feed-forward neural networks (NN) is proposed to deal with systems having unknown nonlinearities. One of the networks is trained to mimic the nonlinear system dynamics. Its ... -
Transient multi-domain thermal modeling of interrupted cutting with coated tools
(Springer Science and Business Media Deutschland GmbH, 2021-09)Interrupted cutting operations, such as milling, produce fluctuating tool temperatures which directly affect the process outputs. Thus, prediction of cutting tool temperatures enables process planning, selection of materials ... -
Effect of scanning strategies and laser parameters on metal-composite joining
(Bellwether Publishing, 2021-07-27)This study presents an investigation on the effectiveness, automation characteristics, and mechanics of joints between different material types namely glass fiber reinforced plastics (GFRPs) and SS304 stainless steel using ... -
Ti6Al4V Alaşımının talaşlı imalatı sırasında termal kamera ile sıcaklık ölçümü ve sonlu elemanlarla modellenmesi
(2019-06-26)Talaşlı imalat en yaygın kullanılan imalat yöntemlerinden biridir. Talaşlı imalatta en önemli problemlerin başında yüzey bütünlüğünü, parça toleransını ve takım ömrünü dolayısıyla maliyeti etkilemesi nedeniyle kesme sıcaklığı ... -
Modelling and simulation studies on adaptive controller for alt-azimuth telescopes despite unknown wind disturbance and mass
(SAGE Publications, 2020-09-15)Numerous ground-based observatories are using small sized ground telescopes for scientific research purposes. The telescopes that are available on the market have three main problems. These issues can be listed as: positioning ... -
Experimental analysis on drilling of Al/Ti/CFRP hybrid composites
(Bellwether Publishing, 2021-01-25)Carbon fiber reinforced composites (CFRP) have superior mechanical properties such as high strength/density ratio, and good damping ability. CFRP which is frequently used in parts in the aviation industry can also be single ... -
Computational and asymptotic methods in aeroacoustics with applications
(Işık University Press, 2011)In this article the computational and asymptotic methods used in aeroacoustics are reviewed. In particular, two different aeroacoustic applications are demonstrated.In the first problem we investigate the first and second ... -
Optimal abs frenleme kontrolcüsünün geliştirilmesi
(Tübitak, 2015-03)Günümüzde taşıtlarda kullanılan ticari ABS sistemleri, frenleme sırasında tekerleklerin dönme hızlarını ölçmekte, tekerleklerin yavaşlama ivmesi belli bir kritik eşik değerini aştığında fren basıncına müdahale ederek ... -
A thermo-mechanical model of drill margin-borehole surface interface contact conditions in dry drilling of thick CFRP laminates
(Elsevier Ltd, 2020-04-23)Dry drilling of thick carbon fiber reinforced polymer (CFRP) laminates requires careful selection of process parameters in order to obtain acceptable borehole surface quality. Complex contact conditions between the drill ... -
Effects of turn-milling conditions on chip formation and surface finish
(Elsevier Science BV, 2019-04-24)Turn-milling operations performed on mill-turn machines offer significant advantages provided that appropriate conditions are used. Compared to conventional machining processes, kinematics and geometry of turn-milling are ... -
Extremum seeking control of uncertain systems
(Işık University Press, 2017)Extremum seeking is used in control problems where the reference trajectory or reference set point of the system is not known but it is searched in real time in order to maximize or minimize a performance function representing ... -
Frezeyle tornalamada takımda ortaya çıkan termal deformasyonların modellenmesi
(Gazi Universitesi Muhendislik-Mimarlik, 2017)Frezeyle tornalama işleminde işlemiş parça doğruluğu ve üretkenliği arttırarak işlem performansını iyileştirmek kesme kuvvetlerini ve takım ucundaki ısı kaynaklı deformasyonları kontrol etmekle mümkündür. Bu çalışmanın ... -
Design of a global extremum seeking algorithm for an omni-directional robot model
(Romanian Soc Control Tech Informatics, 2017-06)A global extremum seeking algorithm is developed for a mobile robot model where the aim is to find the location of the most powerful signal source among the others. In other words, the control problem is to seek the global ... -
An emergency braking controller based on extremum seeking with experimental implementation
(Springer Berlin Heidelberg, 2018-03-01)An extremum seeking scheme is developed for maximizing the longitudinal tire forces of the road vehicles during emergency braking situations. If the road condition is known, then a conventional braking controller could ... -
Far-infrared elastic scattering proposal for the Avogadro Project's silicon spheres
(Pergamon-Elsevier Science Ltd, 2018-05)Avogadro constant determines the number of particles in one mole of a substance, thus relating the molar mass of the substance to the mass of this substance. Avogadro constant is related to Systeme Internationale base units ... -
Extremum seeking dead-zone pre-compensator for an industrial control system
(Walter De Gruyter GMBH, 2018-06-26)PID type industrial controllers such as PI, PD, PID are mature control algorithms and they are intensively used in industry due to their simplicity and easily implementability. However, they start to fail when there is an ... -
Investigating effects of milling conditions on cutting temperatures through analytical and experimental methods
(Elsevier Science SA, 2018-12)Cutting temperatures in milling operations have a significant impact on tool wear, size and shape tolerances and residual stresses of the machined part. Prediction and measurement of cutting temperatures in milling, on the ... -
A gain-switched self-optimizer for braking controller
(John Wiley and Sons Ltd, 2017-06)An emergency braking controller is developed with improved operation characteristics near the maximum friction zone. The methodology is based on self-seeking a-priori unknown optimum operation point to maximize a performance ...