Design and testing of fiber-constrained electroactive polymer

electroactive polymer;dielectric elastomer;electromechanical system;thermodynamic;micro-architectured electro-elasto-kinematic (MEEK);high-stiffness-micro-fiber (HSMF);prestretching;contraction;anisotropy;actuation;soft robotics;biomimetic;buckling;Instability;wrinkle;compliant electrode;fiber-constraint;conductive wire;image processing;Fourier Transform;Fourier Series;fiber alignment;conformation state;electrostatic pressure;dipole;polarization

Lee, Kun Hyuck

关键词: electroactive polymer;    dielectric elastomer;    electromechanical system;    thermodynamic;    micro-architectured electro-elasto-kinematic (MEEK);    high-stiffness-micro-fiber (HSMF);    prestretching;    contraction;    anisotropy;    actuation;    soft robotics;    biomimetic;    buckling;    Instability;    wrinkle;    compliant electrode;    fiber-constraint;    conductive wire;    image processing;    Fourier Transform;    Fourier Series;    fiber alignment;    conformation state;    electrostatic pressure;    dipole;    polarization;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/78694/LEE-THESIS-2015.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

Soft robotics take advantage of active materials to regenerate many complex motions, including low-force functions, such as camouflage, micro-grabbing, or agile locomotion of micro robot. For these applications, traditional actuators, like electric motors and combustion engines, are unnecessarily large and heavy. In contrast, electro-active polymers (EAP) such as electrostatically actuated dielectric elastomers (DE) are considered very suitable technologies for these applications. In particular, owing to their simplicity, high strain and energy densities, and low noise, DE’s are currently the most promising candidates for small scale biomimetic applications. In this study, new fiber-constrained DE designs are developed, in order to obtain controlled uniaxial actuation that suits soft robotics and small scale actuation. Also, micro-wrinkle instabilities that occur in fiber-constrained membranes are examined. The property of wrinkle defers by controlling the geometrical parameters and the amount of strain in a membrane. Therefore controlling the shape of wrinkle is applicable for micro-actuation. In addition, image analysis methodology is discussed and creative ways of analyzing the image data is established.