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Walters, P.; McGoran, D. (2011)
Publisher: The Society for Imaging Science and Technology
Languages: English
Types: Part of book or chapter of book
Subjects:
A peer-reviewed conference paper given at the Digital Fabrication: methods, tooling and processes panel at the Digital Fabrication 2011 Conference, NIP 27, 27th International Conference on Digital Printing Technologies.\ud \ud This paper describes the design and fabrication of novel “soft” structures and mechanisms employing\ud “smart” shape-changing materials. These structures and mechanisms incorporate shape memory alloy (SMA) micro-actuators, enabling them to exhibit lifelike movement when stimulated by the application of electric current. Fabricated by 3D printing in a soft elastomer material, their design includes internal channels into which the SMA actuators are easily mounted. Other design features allow flexibility of movement and facilitate cooling of the SMA actuators. A tentacle-like active structure is described, which incorporates an antagonistic pair of SMA microactuators, allowing it to exhibit two-way motion. Results are presented for the speed and range of motion of\ud the tentacle-like structure.\ud \ud The paper goes on to describe a creative arts application for smart active structures and mechanisms which exploits the technologies under investigation: an interactive puppet which exhibits lifelike, expressive movement. This research in digital fabrication and smart materials has implications for the fields of interactive and robotic art and design, soft robotics and physical computing.
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