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Zhu, Jia-Ning (author)Shape memory alloys (SMAs), such as nickel-titanium (NiTi) alloys or Nitinol, possess remarkable properties, including superelasticity and shape memory effects, which are attributed to the reversible martensitic transformation. However, traditional manufacturing of NiTi SMAs is challenging due to its high ductility and reactivity, which limits...doctoral thesis 2023
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Lanfranco, Valerio (author)To lessen our influence on the environment, we are moving towards solutions that can meet our needs of shelter, nutrition, mobility, communication, and health with little to no energy or resources. In the construction industry, adaptive façades have gained attention for their capacity to adapt to changing conditions. These façades can modify...master thesis 2023
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Lücker, Mila (author)This project explores the potential of a material system based on SMAs that generates haptic feedback for Visually Impaired People (VIPs). Since VIPs rely more than others on tactile information, there is a need for more natural and unintrusive haptic devices as the commonly used electromechanical actuations are often perceived as intrusive and...master thesis 2023
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Kim, June (author)Anxiety is a natural “fight-or-flight” response that everybody experiences to perceived stress or threat. Even though it is a natural response, some individuals struggle with managing their anxiety levels in a healthy manner. Prolonged exposure to high anxiety states can lead to clinical anxiety disorders that negatively impact the quality of...master thesis 2023
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Ghodrat, S. (author), Sandhir, P. (author), Huisman, G. (author)Wearable haptic assistive devices can provide tactile information to visually impaired people (VIP) to support independent living. However, electromechanical haptic feedback has a number of disadvantages, including hardware being relatively heavy, large, and producing excessive sound. Here, we present a design-driven investigation of the...journal article 2023
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Zhu, Jia-Ning (author), Liu, K. (author), Riemslag, A.C. (author), Tichelaar, F.D. (author), Borisov, Evgenii (author), Yao, Xiyu (author), Popovich, Anatoly (author), Huizenga, R.M. (author), Hermans, M.J.M. (author), Popovich, V. (author)Superelastic metallic materials possessing large recoverable strains are widely used in automotive, aerospace and energy conversion industries. Superelastic materials working at high temperatures and with a wide temperature range are increasingly required for demanding applications. Until recently, high-temperature superelasticity has only...journal article 2023
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Liu, Q. (author), Ghodrat, S. (author), Huisman, G. (author), Jansen, K.M.B. (author)Devices delivering sophisticated and natural haptic feedback often encompass numerous mechanical elements, leading to increased sizes and wearability challenges. Shape memory alloys (SMAs) are lightweight, compact, and have high power-to-weight ratios, and thus can easily be embedded without affecting the overall device shapes. Here, a review...review 2023
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Pichler, Niels (author), Wang, Wandong (author), Poulis, J.A. (author), Ghafoori, Elyas (author)Developing a bonded prestressed solution for strengthening structures utilizing an iron-based shape memory alloy (Fe-SMA), is of significant interest. This study is the first systematic investigation of adhesively-bonded Fe-SMA joints to achieve complete cohesive failure, which is an essential prerequisite for bond integrity. The Fe-SMA...journal article 2023
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Liu, M. (author), Zhu, Jia-Ning (author), Popovich, V. (author), Borisov, E. (author), Mol, J.M.C. (author), Gonzalez Garcia, Y. (author)Electrochemical tests and surface analysis measurements were performed to study the corrosion behavior in a 0.9 wt.% NaCl solution at 37 °C of three NiTi shape memory alloys fabricated by laser-powder bed fusion (L-PBF). The passive film characteristics and corrosion resistance of L-PBF NiTi showed different features as a function of their...journal article 2023
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Van den Dwey, Vinciane (author)This graduation report describes the design of a new suitable menstruation product for Beppy that collects blood, is reusable, has a similar (deployable) size and function as a tampon, and which is perceived as less intimidating to insert and extract than a menstrual cup. The new design, the Beppy Clover, is made from silicone and has Nitinol,...master thesis 2022
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Hargrove, Brianne (author), Nastevska, Angela (author), Frecker, Mary (author), Jovanova, J. (author)Folding compliant mechanisms have the potential to be used for innovative designs tailored for specific applications such as energy absorption, shape morphing, or stress relief. This tailorability relies on multiple variables that define the geometric and material behavior. The combined effort of the geometric and material nonlinearity can...journal article 2022
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Zhu, WEIJIA (author)Nitinol shape memory alloys (SMAs) have a unique combination of shape memory capability, making it an attractive material for various engineering and biomedical applications. Additive manufacturing (AM) by laser powder bed fusion (L-PBF) allows to produce Nitinol net shape parts, which broadens its applications. Due to the high heating and...master thesis 2021
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Sandhir, Preeti (author)There are approximately 285 million people worldwide living with a visual impairment and the rate of acquired blindness is expected to continue increasing. Assistive technology for them is progressively being developed in order to enable independent living. For the blind and visually impaired, the tactile sense is the primary source of...master thesis 2021
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KOUKELLI, CHRISTINA (author)Kinetic responsive systems are gaining attention in architectural applications, to help reduce the building’s energy consumption and environmental impact, while improving the indoor comfort conditions. The thesis explores the potentials of Shape Memory Alloys (SMAs) for the design of autoreactive facade systems without using additional energy....master thesis 2021
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Koudstaal, Kim (author)The interest in shape-shifting materials has increased over the past years. A part of this field concerns the shape-shifting of sheets from flat configuration into a double curved configuration, requiring nonuniform strain among the sheet. This functionality can be used for various purposes, in different application fields. For example, shape...master thesis 2021
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Koukelli, Christina (author), Prieto Hoces, A.I. (author), Asut, S. (author)The paper explores the potentials of shape memory alloys (SMAs) for the design of autoreactive façade systems without using additional external energy. The exploration is conducted and assessed through the design of a façade concept for the city of Athens in Greece, aiming to improve both the indoor and outdoor environment by means of a kinetic...journal article 2021
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Hargrove, Brianne (author), Nastevska, Angela (author), Jovanova, J. (author), Frecker, Mary (author)With the shift from traditionally manufactured rigid-body mechanisms to lightweight compliant mechanisms (CMs) in additive manufacturing, researchers have become interested in modeling the behavior of CMs with high flexibility. Due to the large deformations that can be achieved, the use of CMs has expanded into applications such as energy...conference paper 2021
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Denz, P.-R. (author), Sauer, Christiane (author), Fransén Waldhör, Ebba (author), Schneider, Maxie (author), Vongsingha, P. (author)The research project ADAPTEX pursues the goal of developing adaptive, energy-efficient textile sun shading systems using the smart material Shape Memory Alloy (SMA). Within this approach lies a high potential for novel sun protection systems demanding little energy or even self-sufficiently adapting to external stimuli while reducing operation...journal article 2021
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Srinivasan, P. (author)Shape-memory Alloys (SMAs) exhibit tremendous mechanical properties owing to their reversible phase transformation between the austenitic and the martensitic phase. Out of these, equi-atomic nickel-titanium (NiTi) alloys are the most widely used SMAs for various applications since the transformation occurs close to room temperature. Advances in...doctoral thesis 2020
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Zhuo, M. (author)NiTi shape memory alloys (SMAs) exhibit distinct thermo-mechanical behaviors affected by the loading frequency, ambient conditions, and the specimen geometry. The effects of these factors are essentially due to the competition of different timescales in phase transitions of NiTi SMAs. However, quantifying the timescale competition still remains...journal article 2020