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Thermally activated paraffin-filled McKibben muscles

Journal Article


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Abstract


  • McKibben artificial muscles are one of the most pragmatic contractile actuators, offering performances similar to skeletal

    muscles. The McKibben muscles operate by pumping pressurized fluid into a bladder constrained by a stiff braid so that

    tensile force generated is amplified in comparison to a conventional hydraulic ram. The need for heavy and bulky compressors/

    pumps makes pneumatic or hydraulic McKibben muscles unsuitable for microactuators, where a highly compact

    design is required. In an alternative approach, this article describes a new type of McKibben muscle using an expandable

    guest fill material, such as temperature-sensitive paraffin, to achieve a more compact and lightweight actuation system.

    Two different types of paraffin-filled McKibben muscles are introduced and compared. In the first system, the paraffinfilled

    McKibben muscle is simply immersed in a hot water bath and generates isometric forces up to 850 mN and a free

    contraction strain of 8.3% at 95C. In the second system, paraffin is heated directly by embedded heating elements and

    exhibits the maximum isometric force of 2 N and 9% contraction strain. A quantitative model is also developed to predict

    the actuation performance of these temperature sensitive McKibben muscles as a function of temperature.

UOW Authors


  •   Sangian, Danial (external author)
  •   Naficy, Sina (external author)
  •   Spinks, Geoff M.

Publication Date


  • 2016

Citation


  • Sangian, D., Naficy, S. & Spinks, G. M. (2016). Thermally activated paraffin-filled McKibben muscles. Journal of Intelligent Material Systems and Structures, 27 (18), 2508-2516.

Scopus Eid


  • 2-s2.0-84992535713

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7196&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6166

Number Of Pages


  • 8

Start Page


  • 2508

End Page


  • 2516

Volume


  • 27

Issue


  • 18

Abstract


  • McKibben artificial muscles are one of the most pragmatic contractile actuators, offering performances similar to skeletal

    muscles. The McKibben muscles operate by pumping pressurized fluid into a bladder constrained by a stiff braid so that

    tensile force generated is amplified in comparison to a conventional hydraulic ram. The need for heavy and bulky compressors/

    pumps makes pneumatic or hydraulic McKibben muscles unsuitable for microactuators, where a highly compact

    design is required. In an alternative approach, this article describes a new type of McKibben muscle using an expandable

    guest fill material, such as temperature-sensitive paraffin, to achieve a more compact and lightweight actuation system.

    Two different types of paraffin-filled McKibben muscles are introduced and compared. In the first system, the paraffinfilled

    McKibben muscle is simply immersed in a hot water bath and generates isometric forces up to 850 mN and a free

    contraction strain of 8.3% at 95C. In the second system, paraffin is heated directly by embedded heating elements and

    exhibits the maximum isometric force of 2 N and 9% contraction strain. A quantitative model is also developed to predict

    the actuation performance of these temperature sensitive McKibben muscles as a function of temperature.

UOW Authors


  •   Sangian, Danial (external author)
  •   Naficy, Sina (external author)
  •   Spinks, Geoff M.

Publication Date


  • 2016

Citation


  • Sangian, D., Naficy, S. & Spinks, G. M. (2016). Thermally activated paraffin-filled McKibben muscles. Journal of Intelligent Material Systems and Structures, 27 (18), 2508-2516.

Scopus Eid


  • 2-s2.0-84992535713

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7196&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6166

Number Of Pages


  • 8

Start Page


  • 2508

End Page


  • 2516

Volume


  • 27

Issue


  • 18