Department of Aerospace Engineering

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Recent Submissions

A non-iterative boundary element formulation for nonlinear viscoelasticity Akay, Ahmet Arda; Gürses, Ercan; Göktepe, Serdar (2024-06-01) In this study, we propose a non-iterative boundary element method (BEM) of highly nonlinear viscoelasticity in time domain. The computationally attractive iteration-free algorithmic structure is achieved by the linearizati...
Investigation of failure mechanisms in dual-phase steels through cohesive zone modeling and crystal plasticity frameworks Aydiner, Ilbilge Umay; Tatlı, Berkehan; Yalçinkaya, Tuncay (2024-03-01) Dual-phase (DP) steels are characterized by their good formability and interesting material properties, which primarily originate from their unique composition, combining the ductile ferrite phase with the hard martensite ...
Comparison of Linear and Nonlinear Twist Extrusion Processes with Crystal Plasticity Finite Element Analysis Şimşek, Ülke; Davut, Kemal; Miyamoto, Hiroyuki; Yalçınkaya, Tuncay (2024-03-01) The mechanical characteristics of polycrystalline metallic materials are influenced significantly by various microstructural parameters, one of which is the grain size. Specifically, the strength and the toughness of polyc...
High Aspect Ratio Composite Wings: Geometrically Nonlinear Aeroelasticity, Multi-Disciplinary Design Optimization, Manufacturing, and Experimental Testing Farsadi, Touraj; Ahmadi, Majid; Şahin, Melin; Haddad Khodaparast, Hamed; Kayran, Altan; Friswell, Michael I. (2024-03-01) In the field of aerospace engineering, the design and manufacturing of high aspect ratio composite wings has become a focal point of innovation and efficiency. These long, slender wings, constructed with advanced materials...
Improving the Load Carrying Capacity of Highly Tapered Laminates Ergin, Fırat; Kayran, Altan (2024-02-08) Kat düşme bölgelerindeki artan gerilimler, katman ayrılmasına neden olur ve çok sayıda katın kısa mesafede sonlandırıldığı kompozit parçaların mukavemetini azaltır. Bu çalışmada, yüksek oranda konikleştirilmiş lamine kompo...
Phase field modeling of fatigue crack growth retardation under single cycle overloads Waseem, Sarim; Erdoğan, Can; Yalçınkaya, Tuncay (2024-02-01) A zone-based crack retardation model that responds to single cycle overloads is applied to a phase field fatigue framework. Fatigue crack growth is incorporated through the degradation of fracture toughness in the phase fi...
High-fidelity simulations of low-velocity impact induced matrix cracking and dynamic delamination progression in CFRP beams Batmaz, Onur Ali; Bozkurt, Mirac Onur; Gürses, Ercan; Çöker, Demirkan (2024-02-01) A high-fidelity finite element model is constructed to simulate the low-velocity line-impact experiments conducted by Bozkurt and Coker on [05/903]s CFRP beams. The simulations utilize a user-implemented three-dimensional ...
Adjoint based aerodynamic shape optimization of a semi-submerged inlet duct and upstream inlet surface Küçük, Umut Can; Tuncer, İsmail Hakkı (2024-01-01) Aerodynamic performance of a semi-submerged inlet exposed to a significant amount of boundary layer ingestion is optimized using the open-source flow and adjoint solver SU2. Pressure recovery is taken as the objective func...
Bioinspired Interfaces for Improved Interlaminar Shear Strength in 3D Printed Multi-material Polymer Composites ALTUNTAŞ, UMUT; Çöker, Demirkan; Yavas, Denizhan (2024-01-01) Additively manufactured soft-hard composite materials are significant because they combine the benefits of both soft and hard materials, creating a new class of materials with unique properties. The interfaces between the ...
High-speed observation of dynamic delamination failure in tapered composite laminates under tensile loading Bozkurt, Mirac Onur; ÖZEN, EMİNE BURÇİN; Yavuz, Burak Ogun; Parnas, Kemal Levend; Çöker, Demirkan (2024-01-01) This article presents high-fidelity observations of the time evolution of unstable delamination growth in tapered composite beams under tensile loading via ultra-high-speed camera in conjunction with digital image correlat...
Design and Analysis of a Small-Scale Solar Powered UAV ANILIR, BERKAN; Afzal, Aftab; Said Al Abri, Omar Khalifa; Khamis Al Dhafari, Luqman Sulaiman; Khan, Abid Ali; Kurtuluş, Dilek Funda (2023-12-16)
Experimental study on efficient propulsion system for multicopter UAV design applications Goli, Srikanth; Kurtuluş, Dilek Funda; Alhems, Luai M.; Memon, Azhar M.; Imran, Imil Hamda (2023-12-01) The usage of multicopter unmanned aerial vehicles (UAVs) has increased for various military and civilian purposes. The choice of propulsion system of such a vehicle is crucial to fulfill the intended mission requirements. ...
Estimating the pressure force around swimming plankton using micro particle image velocimetry Ergin, Fahrettin Gokhan; Gunaydinoglu, Erkan; Kurtuluş, Dilek Funda; Wadhwa, Navish (2023-12-01) Obtaining pressure force for freely swimming microorganisms is a challenging yet important problem. Here, we report the swimming kinematics and dynamics of the zooplankton Acartia tonsa nauplius investigated using Micro Pa...
Observation of heterogeneous deformation microstructure in ECAP processing of high-purity niobium Ikeda, Satoshi; Miyamoto, Hiroyuki; Yuasa, Motohito; Yalçınkaya, Tuncay; Bulut, Orhun; Günay, Enes (2023-11-28)
A numerical ballistic performance investigation of Armox 500T steel through ductile damage models Göçmen, Yağmur; Erdoğan, Can; Yalçınkaya, Tuncay (2023-11-15) In this work, the ballistic response of an armor steel, Armox 500T, is numerically investigated through finite element (FE) analysis by utilizing the Johnson–Cook (JC) and modified Mohr–Coulomb (MMC) damage models, with a ...
A Numerical Study on the Ballistic Performance of Projectiles Formed by Shaped Charge Göçmen, Yağmur; Erdoğan, Can; Yalçınkaya, Tuncay (2023-11-01)
The Three-dimensional Flows around Tip-vortex Cavities in the Wake of a Ship Propeller Başkan Perçin, Özge; FISCALETTI, DANIELE; ELSINGA, GERRIT; VAN TERWISGA, TOM (2023-10-26)
Katman Azaltma Bölgelerinde katman Ayrılması Başlangıcının Geciktirilmesinde Kalınlık Boyunca Basınç Gerilmesinin Uygulanması Ergin, Fırat; Kayran, Altan (2023-10-06) Kat sonlandırma bölgeleri, havacılık ve uzay endüstrisinde kullanılan lamine kompozit yapıların kaçınılmaz parçalarıdır ve yapıdaki malzeme süreksizliklerinden dolayı hasarın erken başlamasından sorumludurlar. Bu nedenle k...
Design and Analysis of a Small-Scale Solar Powered UAV Anılır, Berkan; Afzal, Aftab; Al Abri, Omar Khalifa Said; Al Dhafari, Luqman Sulaiman Khamis; Khan, Abid Ali; Kurtuluş, Dilek Funda (2023-10-05)
Future of Unmanned Power Aerial Vehicles Kurtuluş, Dilek Funda (2023-10-03)

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