Development of curved type pneumatic artificial rubber muscle using shape-memory polymer

A conventional curved type pneumatic rubber artificial muscle is composed of an internal bladder covered with a bellows sleeve extending axially. By inhibiting the extension of one side with a fiber reinforcement, bending motion occurs when air is supplied to the bladder. In this study, we developed a new actuator by replacing the fiber reinforcement with a shape-memory polymer (SMP). The SMP can be deformed above its glass transition temperature (Tg) and maintains a rigid shape after it is cooled below Tg. When next heated above Tg, it returns to its initial shape. When only part of our actuator is warmed above Tg, only that portion of the SMP is soft and can actuate. Therefore, the direction of the motion can be controlled by heating. Moreover, our actuator can be deformed by an external force above Tg and fixed when its initial shape is below Tg.

• Publication year

  2011

• Venue

  SICE Annual Conference 2011

• Publication date

  2011-05-01

• Fields of study

  Materials Science, Computer Science, Engineering

• Identifiers
  DOI 10.20965/jrm.2012.p0472
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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