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Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots
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Consistent Manufacturing Device for Coiled Polymer Actuators.

Sarah Horton, Patrick Dumond

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |November 17, 2018
    PubMed
    Summary

    Researchers developed a consistent manufacturing method for coiled polymer actuators made from heated, twisted nylon fishing filament. This improves the predictability of their behavior for various applications.

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    Area of Science:

    • Materials Science
    • Polymer Engineering
    • Actuator Technology

    Background:

    • Coiled polymer actuators offer potential for soft robotics and smart devices.
    • Existing manufacturing methods for these actuators lack consistency, hindering predictable performance.

    Purpose of the Study:

    • To present a detailed review of the manufacturing process for coiled polymer actuators.
    • To propose and demonstrate a novel, consistent method for fabricating these actuators.
    • To enhance the predictability of actuator behavior through improved manufacturing.

    Main Methods:

    • Fabrication involves heating twisted nylon fishing filament.
    • Development of two specialized devices: one for consistent filament preparation, another for controlled twisting and coiling.
    • Characterization of actuator behavior using tensile testing on a universal testing machine.

    Main Results:

    • Seven successful coiled polymer actuators were fabricated using the proposed method.
    • Tensile tests were conducted to characterize actuator performance.
    • Observed force fluctuations were attributed to inconsistencies in resistance wire lengths.

    Conclusions:

    • The proposed manufacturing method enhances consistency in coiled polymer actuator production.
    • Further refinement is needed to address minor fluctuations in performance, potentially by standardizing resistance wire lengths.