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A bladder-free, non-fluidic, conductive McKibben artificial muscle operated electrothermally

Journal Article


Abstract


  • Fluidic McKibben artificial muscles that operate pneumatically or hydraulically provide excellent

    performance, but require bulky pumps/compressors, valves and connecting lines. Use of a

    pressure generating material, such as thermally expanding paraffin wax, can eliminate the need for

    these pumps and associated infrastructure. Here we further develop this concept by introducing the

    first bladderless McKibben muscle wherein molten paraffin is contained by surface tension within

    a tailored braid. Incorporation of electrically conductive wires in the braid allows for convenient

    Joule heating of the paraffin. The muscle is light (0.14 g) with a diameter of 1.4mm and is capable

    of generating a tensile stress of 50 kPa (0.039 N) in 20 s. The maximum contraction strain of 10%

    (7.6 kPa given load) was achieved in 60 s with an applied electrical power of 0.35 W.

Authors


  •   Sangian, Danial (external author)
  •   Foroughi, Javad (external author)
  •   Farajikhah, Syamak (external author)
  •   Naficy, Sina (external author)
  •   Spinks, Geoff M.

Publication Date


  • 2017

Citation


  • Sangian, D., Foroughi, J., Farajikhah, S., Naficy, S. & Spinks, G. M. (2017). A bladder-free, non-fluidic, conductive McKibben artificial muscle operated electrothermally. Smart Materials and Structures, 26 015011-1-015011-8.

Scopus Eid


  • 2-s2.0-85009832183

Start Page


  • 015011-1

End Page


  • 015011-8

Volume


  • 26

Abstract


  • Fluidic McKibben artificial muscles that operate pneumatically or hydraulically provide excellent

    performance, but require bulky pumps/compressors, valves and connecting lines. Use of a

    pressure generating material, such as thermally expanding paraffin wax, can eliminate the need for

    these pumps and associated infrastructure. Here we further develop this concept by introducing the

    first bladderless McKibben muscle wherein molten paraffin is contained by surface tension within

    a tailored braid. Incorporation of electrically conductive wires in the braid allows for convenient

    Joule heating of the paraffin. The muscle is light (0.14 g) with a diameter of 1.4mm and is capable

    of generating a tensile stress of 50 kPa (0.039 N) in 20 s. The maximum contraction strain of 10%

    (7.6 kPa given load) was achieved in 60 s with an applied electrical power of 0.35 W.

Authors


  •   Sangian, Danial (external author)
  •   Foroughi, Javad (external author)
  •   Farajikhah, Syamak (external author)
  •   Naficy, Sina (external author)
  •   Spinks, Geoff M.

Publication Date


  • 2017

Citation


  • Sangian, D., Foroughi, J., Farajikhah, S., Naficy, S. & Spinks, G. M. (2017). A bladder-free, non-fluidic, conductive McKibben artificial muscle operated electrothermally. Smart Materials and Structures, 26 015011-1-015011-8.

Scopus Eid


  • 2-s2.0-85009832183

Start Page


  • 015011-1

End Page


  • 015011-8

Volume


  • 26