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10 May 2024 Auxetic-architectured SMA-based wearable haptics
Saewoong Oh, Il-Kwon Oh
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Proceedings Volume PC12948, Soft Mechatronics and Wearable Systems; PC1294808 (2024) https://doi.org/10.1117/12.3014591
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States
Abstract
The rise in significance of wearable actuators can be attributed to their capability to offer real-time tactile feedback, multi-functionality, and above all, optimal comfort to users. While various actuator types like motor-driven tendons, pneumatics, and electromagnetics have been utilized in wearable applications, they often entail the addition of a cumbersome rigid system to the wearer, potentially leading to discomfort. Shape memory alloys (SMAs), which alter their physical form and rigidity based on temperature variance, present a viable option for wearable actuators, particularly when processed into fabric form using SMA wires. In this study, we developed an SMA-based fabric type actuator by intricately knotting SMA wires and subsequently expanding them into 2D textile form. Further, the auxetic meta-design is introduced, enhancing its adaptability to the 3D contours of human body. This auxetic-architectured SMA fabric was effectively employed as a wearable haptic device, conveying spatiotemporal feedbacks to users.
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Saewoong Oh and Il-Kwon Oh "Auxetic-architectured SMA-based wearable haptics", Proc. SPIE PC12948, Soft Mechatronics and Wearable Systems, PC1294808 (10 May 2024); https://doi.org/10.1117/12.3014591
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KEYWORDS
Haptic technology
Shape memory alloys
Actuators
Electromagnetism
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