Altan Kayran

E-mail

akayran@metu.edu.tr

Department

Department of Aerospace Engineering

ORCID

0000-0002-0840-6887

Scopus Author ID

7003421551

Web of Science Researcher ID

ABA-1358-2020

Effect of microdamage on the failure of open-hole UD GFRP laminates: A combined experimental and numerical study Şener, Özgün; Kayran, Altan (2026-02-01) The effect of microdamaging on the failure of unidirectional Interglas 92145/CR80 GFRP laminates is studied through experiments and a numerical approach combining Enhanced Schapery Theory (EST) and Crack Band Theory (CBT)....
Numerical Investigation of Gaps and Overlaps in Variable Stiffness Composites Using Alternative Defect Modeling Approaches Demirer, Halime Gül; Kayran, Altan (2026-01-01) This study examines the structural response of variable stiffness (VS) composite laminates manufactured by Automated Fiber Placement (AFP), focusing on the effects of gaps and overlaps on buckling and post-buckling damage ...
Investigation of Variable Taper Angle Design in Highly Tapered Laminates for Delaying Delamination Ergin, Fırat; Kayran, Altan (2025-03-01) Specific requirements in aircraft components may necessitate the use of high taper angles in the thickness transition region of composite laminates, leading to early delamination initiation at the thin side of the taper re...
Lattice Cell Assisted Topology Optimization of an Extendable Wing for Munition Aksoy, Buğra; Kayran, Altan (2025-01-01) This study focuses on developing a structural concept for an extendable wing for munitions using a lattice-cell-assisted approach. The process involves topology optimization followed by size optimization of the strut-based...
Surrogate model based optimization of variable stiffness composite wingbox for improved buckling load with manufacturing and failure constraints Inci, Hasan; Kayran, Altan (2025-01-01) The buckling load of a wingbox is maximized by applying different automatic fiber placement (AFP) strategies on the skins of the wing having NACA 4412 airfoil profile. Specifically, the effect of single, dual and three reg...
Application of Artificial Neural Network based Surrogate Models for Parameterized Flow to a Sweptback Wing: An Outlook for Wind Turbine Blades Yilmaz, Ozge Ozkaya; Kayran, Altan (2025-01-01) The dynamics of blunt-body reentry vehicles are crucial, as they must withstand the intense aerodynamic forces and extreme heat generated during atmospheric reentry. Despite thermal protection benefits, the blunt body shap...
Numerical Investigation of Ply Termination Techniques for Delamination Resistance Ergin, Fırat; Kayran, Altan (2025-01-01) Necessary ply termination locations for improved weight and stiffness distribution in laminated composite structures can cause early initiation of delamination due to the elevated interlaminar stresses in wind turbine blad...
A Finite Element Approach to Optimize Fiber Paths of Tow Steered Composites Using Unstructured Mesh Technique Kayran, Altan; Haq, Rameezul (2025-01-01) This study proposes a finite element-based methodology to optimize curvilinear fiber paths in Tow Steered Composites (TSCs) by tuning two governing fiber orientation parameters, T0 and T1. These angles define the spatially...
Comparative numerical analysis of gap and overlap effect on mechanical properties of variable stiffness composites Demirer, Halime Gül; Kayran, Altan (2024-08-26)
A Comparative Study on the Efficiencies of Aerodynamic Reduced Order Models of Rigid and Aeroelastic Sweptback Wings Özkaya Yılmaz, Özge; Kayran, Altan (2024-08-01) This paper presents the effect of wing elasticity on the efficiency of a nonintrusive reduced order model using a three-dimensional sweptback wing. For this purpose, a computationally low-cost but highly accurate nonintrus...

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