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Nylon coil actuator operating temperature range and stiffness

Conference Paper


Abstract


  • Components in automotive and aerospace applications require a wide temperature range of operation. Newly

    discovered thermally active Baughman muscle potentially provides affordable and viable solutions for driving

    mechanical devices by heating them from room temperature, but little is known about their operation below

    room temperature. We study the mechanical behavior of nylon coil actuators by testing elastic modulus and by

    investigating tensile stroke as a function of temperature. Loads that range from 35 MPa to 155 MPa were

    applied. For the nylon used and the coiling conditions, active thermal contraction totals 19.5 % when the

    temperature is raised from -40 oC to 160 oC. The thermal contraction observed from -40 oC to 20 oC is only ~2

    %, whereas between 100 and 160 oC the contraction is 10 %. A marked increase in thermal contraction is occurs

    in the vicinity of the glass transition temperature (~ 45 oC). The elastic modulus drops as temperature increases,

    from ~155 MPa at – 40 oC to 35 MPa at 200 oC. Interestingly the drop in active contraction with increasing load

    is small and much less than might be expected given the temperature dependence of modulus.

UOW Authors


  •   Kianzad, Soheil (external author)
  •   Pandit, Milind (external author)
  •   Bahi, Addie (external author)
  •   Ravandi, Ali Rafie (external author)
  •   Ko, Frank (external author)
  •   Spinks, Geoff M.
  •   Madden, John D. W. (external author)

Publication Date


  • 2015

Citation


  • Kianzad, S., Pandit, M., Bahi, A., Ravandi, A. Rafie., Ko, F., Spinks, G. M. & Madden, J. D.W.. (2015). Nylon coil actuator operating temperature range and stiffness. In Y. Bar-Cohen (Eds.), Proceedings of SPIE: Electroactive Polymer Actuators and Devices (EAPAD) 2015 (pp. 94301X-1-93401X-6). United States: S P I E - International Society for Optical Engineering.

Scopus Eid


  • 2-s2.0-84937239019

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4111

Start Page


  • 94301X-1

End Page


  • 93401X-6

Place Of Publication


  • http://spie.org/Publications/Proceedings/Volume/9430

Abstract


  • Components in automotive and aerospace applications require a wide temperature range of operation. Newly

    discovered thermally active Baughman muscle potentially provides affordable and viable solutions for driving

    mechanical devices by heating them from room temperature, but little is known about their operation below

    room temperature. We study the mechanical behavior of nylon coil actuators by testing elastic modulus and by

    investigating tensile stroke as a function of temperature. Loads that range from 35 MPa to 155 MPa were

    applied. For the nylon used and the coiling conditions, active thermal contraction totals 19.5 % when the

    temperature is raised from -40 oC to 160 oC. The thermal contraction observed from -40 oC to 20 oC is only ~2

    %, whereas between 100 and 160 oC the contraction is 10 %. A marked increase in thermal contraction is occurs

    in the vicinity of the glass transition temperature (~ 45 oC). The elastic modulus drops as temperature increases,

    from ~155 MPa at – 40 oC to 35 MPa at 200 oC. Interestingly the drop in active contraction with increasing load

    is small and much less than might be expected given the temperature dependence of modulus.

UOW Authors


  •   Kianzad, Soheil (external author)
  •   Pandit, Milind (external author)
  •   Bahi, Addie (external author)
  •   Ravandi, Ali Rafie (external author)
  •   Ko, Frank (external author)
  •   Spinks, Geoff M.
  •   Madden, John D. W. (external author)

Publication Date


  • 2015

Citation


  • Kianzad, S., Pandit, M., Bahi, A., Ravandi, A. Rafie., Ko, F., Spinks, G. M. & Madden, J. D.W.. (2015). Nylon coil actuator operating temperature range and stiffness. In Y. Bar-Cohen (Eds.), Proceedings of SPIE: Electroactive Polymer Actuators and Devices (EAPAD) 2015 (pp. 94301X-1-93401X-6). United States: S P I E - International Society for Optical Engineering.

Scopus Eid


  • 2-s2.0-84937239019

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4111

Start Page


  • 94301X-1

End Page


  • 93401X-6

Place Of Publication


  • http://spie.org/Publications/Proceedings/Volume/9430