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Fabrication of 3D soft morphing structure using shape memory alloy (SMA) wire/polymer skeleton composite

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Abstract

The most common method of fabricating a smart structure using a shape memory alloy (SMA) is to create an SMA-embedded structure. However, if the structure is too thick, actuation is decreased significantly. Hence, SMA-embedded structures and robots are usually thin, leaving no space for additional parts. In this research, an SMA-embedded soft morphing structure with large thickness and deformation was developed. A skeletal structure and hinges, which could amplify actuating displacement, were used to increase the overall actuation by maximizing the actuation in a specific area. Also payload of prototype is enough to lift additional weight. A prototype of the design was fabricated via rapid prototy** (RP) and casting. The performance of the prototype was evaluated, and large deformation and actuation force were demonstrated. A cell phone robot was suggested as an application, and the resulting fabricated prototype exhibited crawling actuation.

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Authors and Affiliations

  1. School of Mechanical and Aerospace Engineering & Institute of Advanced Machinery and Design, Seoul National University, Seoul, 151-742, Korea

    Ji-Soo Kim, Jang-Yeob Lee, Kyung-Tae Lee, Hyung-Soo Kim & Sung-Hoon Ahn

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  1. Ji-Soo Kim
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  2. Jang-Yeob Lee
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  3. Kyung-Tae Lee
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  4. Hyung-Soo Kim
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  5. Sung-Hoon Ahn
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Correspondence to Sung-Hoon Ahn.

Additional information

Recommended by Associate Editor Heung Soo Kim

Ji-Soo Kim was born in 1986. He received his B.S. and M.S. degree in mechanical aerospace engineering from the Seoul National University, in 2009 and 2011. His research interest is about manufacturing process and smart structure. He is now working for Samsung Techwin (2012-present).

Jang-Yeob Lee is presently M.S. candidate in School of Mechanical and Aerospace Engineering at Seoul National University in Korea. He received his B.S. degree in Department of Control & Instrumentation from Korea University in 2011. His research interest includes control of biomimetic robot and smart structure.

Kyung-Tae Lee is presently Ph.D. candidate in School of Mechanical and Aerospace Engineering at Seoul National University in Korea. He received his B.S degree in mechanical engineering and Business Management from Seoul National University in 2007. His research interest is the biomimetic of underwater creatures.

Hyung-Soo Kim is presently M.S. candidate in School of Mechanical and Aerospace Engineering at Seoul National University in Korea. He received his B.S. degree in mechanical engineering from Seoul National University in 2011. His research interest is biomimetic and artificial muscles.

Sung-Hoon Ahn is presently a professor in School of Mechanical and Aerospace Engineering at Seoul National University in Korea. He received his B.S. degree in aerospace engineering from the University of Michigan, Ann Arbor, in 1992 and his M.S. and Ph.D. degrees in aeronautics and astronautics from Stanford University in 1994 and 1997, respectively. Before joining Seoul National University, he worked as a research associate at the University of California, Berkeley (1997–2000) and an assistant professor of mechanical and aerospace engineering at Gyeongsang National University (2001–2003). His research interests include rapid prototy**, Internet-based design and manufacturing, microfabrication, nanocomposites, and design for manufacturing.

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Kim, JS., Lee, JY., Lee, KT. et al. Fabrication of 3D soft morphing structure using shape memory alloy (SMA) wire/polymer skeleton composite. J Mech Sci Technol 27, 3123–3129 (2013). https://doi.org/10.1007/s12206-013-0832-1

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  • DOI: https://doi.org/10.1007/s12206-013-0832-1

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