Affiliation:
1. Institute of Robotics and Intelligent Systems ETH Zurich Zurich CH‐8092 Switzerland
2. Department of Mechanical Engineering Seoul National University Seoul 08826 Republic of Korea
3. School of Mechanical Engineering Sungkyunkwan University Gyeonggido 16419 Republic of Korea
4. Department of Mechanical Engineering Inha University Incheon 22212 Republic of Korea
5. Department of Mechanical, Robotics and Energy Engineering Dongguk University Seoul 04620 Republic of Korea
6. Institute of Advanced Machines and Design Seoul National University Seoul 08826 Republic of Korea
Abstract
AbstractShape memory alloys (SMAs) are smart materials that are widely used to create intelligent devices because of their high energy density, actuation strain, and biocompatibility characteristics. Given their unique properties, SMAs are found to have significant potential for implementation in many emerging applications in mobile robots, robotic hands, wearable devices, aerospace/automotive components, and biomedical devices. Here, the state–of–the–art of thermal and magnetic SMA actuators in terms of their constituent materials, form, and scaling effects are summarized, including their surface treatments and functionalities. The motion performance of various SMA architectures (wires, springs, smart soft composites, and knitted/woven actuators) is also analyzed. Based on the assessment, current challenges of SMAs that need to be addressed for their practical application are emphasized. Finally, how to advance SMAs by synergistically considering the effects of material, form, and scale is suggested.
Funder
National Research Foundation of Korea
Korea Institute of Machinery and Materials
H2020 European Research Council
Inha University
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
60 articles.
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