Browsing by Author "Turhan-Haskara, G.D."

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Multi-Objective Evolutionary Optimization of Bacterial Cellulose-Based Composite Glazing for Thermal, Daylight, and Energy Consideration
(Institute of Physics, 2025) Taser, A.; Turhan-Haskara, G.D.
Glazing elements are critical components of building envelopes as they regulate the admission of direct and indirect sunlight, thereby reducing the energy demand of buildings by improving daylight performance and thermal comfort. While recent literature presents various applications of advanced glazing technologies, it is crucial to explore alternative sustainable materials that can respond to environmental conditions while enhancing the performance of buildings. Among biobased materials, bacterial cellulose (BC) stands out due to its unique properties, such as high tensile strength, elasticity, absorbency, and moderate transparency. This study investigates the integration of BC-based composite glazing into the facade of an architectural design studio. A multi-objective optimization, combining daylighting and energy simulations, was employed to optimize the transparency, size, and placement of the glazing elements. The results show that BC-based glazing improves the uniformity of daylight distribution, reduces glare risk, and slightly decreases the building's annual heating and cooling loads compared to the base case. This study demonstrates the potential of bio-based composite glazing as a sustainable alternative for building envelopes, emphasizing circularity and low-energy strategies, by highlighting the synergy between building science, computational design, and biology in driving the transition toward a more resilient built environment. © Published under licence by IOP Publishing Ltd.
Smart Hinges Using Shape Memory Alloys for Architectural Applications
(Education and Research in Computer Aided Architectural Design in Europe, 2025) Neseliler, P.; Turhan-Haskara, G.D.; Akgün, Y.; Maden, F.
The objective of reducing energy usage in buildings has led to the development of adaptive and responsive systems that can respond to environmental changes in real time. Most responsive systems utilize rigid body mechanisms and electrically or pneumatically driven actuators. Actuation strategies are significant in designing adaptive facades since they are also in charge of energy consumption. Responsive systems can be integrated with smart materials capable of shape, color, and volume shifts in response to external stimuli change through material technology rather than relying on sensors, control systems, or active actuators. These smart materials, referred to as smart actuators, can be utilized to actuate systems. This study aims to present suggestions for a smart hinge for passive responsive shading structures using smart materials. The chosen smart material is nitinol wire, a shape memory alloy (SMA) with the ability to recall its preformed position. The methodology consists of two parts: an investigation of responsive systems composed of smart actuators and a proposal for a new smart hinge based on SMA utilizing Crane tool in Grasshopper. This paper shows the potential and constraints of smart actuators in architectural applications. The proposed smart hinge has the potential to contribute to the improvement of building envelopes through material technology. © 2025, Education and research in Computer Aided Architectural Design in Europe. All rights reserved.