Precision instrument for characterizing shape memory alloy wires in bias spring actuation

Sumanth Chikkamaranahalli, R. Ryan Vallance, Afzal Khan, Eric Russell Marsh, Osamah A. Rawashdeh, J. E. Lumpp, Bruce L. Walcott

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    Some metallic alloys such as Nitinol (NiTi) exhibit the shape memory effect, which is suitable for generating force and displacement when the alloy changes phase during a heating and cooling cycle. These shape memory alloys are often formed into one-dimensional wires, tubes, and ribbons that are preloaded by bias springs to create inexpensive actuators for electromechanical devices. This article describes a new instrument for measuring the quasistatic characteristics of the alloy and the transient performance of bias-spring actuators when resistively heated and convectively cooled. The instrument achieves more accurate measurements by eliminating rolling friction and by sensing force and displacement in line with the bias spring and shape memory alloy wire. Data from the instrument enables calculation of stress and strain at constant temperatures and during actuation cycles.

    Original languageEnglish (US)
    Article number065105
    JournalReview of Scientific Instruments
    Volume76
    Issue number6
    DOIs
    StatePublished - Jun 28 2005

    Fingerprint

    shape memory alloys
    Shape memory effect
    actuation
    wire
    Wire
    Actuators
    actuators
    electromechanical devices
    Electromechanical devices
    cycles
    ribbons
    friction
    Friction
    tubes
    Cooling
    cooling
    Heating
    heating
    Temperature
    temperature

    All Science Journal Classification (ASJC) codes

    • Instrumentation

    Cite this

    Chikkamaranahalli, S., Vallance, R. R., Khan, A., Marsh, E. R., Rawashdeh, O. A., Lumpp, J. E., & Walcott, B. L. (2005). Precision instrument for characterizing shape memory alloy wires in bias spring actuation. Review of Scientific Instruments, 76(6), [065105]. https://doi.org/10.1063/1.1920629
    Chikkamaranahalli, Sumanth ; Vallance, R. Ryan ; Khan, Afzal ; Marsh, Eric Russell ; Rawashdeh, Osamah A. ; Lumpp, J. E. ; Walcott, Bruce L. / Precision instrument for characterizing shape memory alloy wires in bias spring actuation. In: Review of Scientific Instruments. 2005 ; Vol. 76, No. 6.
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    Chikkamaranahalli, S, Vallance, RR, Khan, A, Marsh, ER, Rawashdeh, OA, Lumpp, JE & Walcott, BL 2005, 'Precision instrument for characterizing shape memory alloy wires in bias spring actuation', Review of Scientific Instruments, vol. 76, no. 6, 065105. https://doi.org/10.1063/1.1920629

    Precision instrument for characterizing shape memory alloy wires in bias spring actuation. / Chikkamaranahalli, Sumanth; Vallance, R. Ryan; Khan, Afzal; Marsh, Eric Russell; Rawashdeh, Osamah A.; Lumpp, J. E.; Walcott, Bruce L.

    In: Review of Scientific Instruments, Vol. 76, No. 6, 065105, 28.06.2005.

    Research output: Contribution to journalArticle

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    AU - Walcott, Bruce L.

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