Premium
Hysteretic Buckling for Actuation of Magnet–Polymer Composites
Author(s) -
Ahmed Anansa S.,
Ramanujan Raju V.
Publication year - 2015
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201500152
Subject(s) - actuator , artificial muscle , materials science , buckling , magnet , composite material , composite number , electroactive polymers , polymer , flexibility (engineering) , mechanical engineering , computer science , engineering , statistics , mathematics , artificial intelligence
The development of bioinspired, novel, high‐performance, “artificial muscle” materials is a topic of high current interest. Flexibility for folding and actuation are key parameters in the development of such artificial muscles, especially for self‐assembly and origami engineering. A current challenge is to develop a multifunctional material that combines the biological functions of actuation, sensing, and healing. In this work, for the first time experimental and modeling results of the actuation capability of a multifunctional magnet–polymer (Magpol) composite material that is already capable of damage sensing and self‐healing are reported. Actuation by constrained buckling of Magpol in an external magnetic field shows two buckling modes. The stress and strain are studied and optimized for various actuator geometries. Work density of up to 16 J kg −1 is obtained, comparable to electroactive polymers. Magpol is successfully able to lift more than four times its own weight at relatively low applied magnetic field. Good agreement is observed between the experimental and modeling results. An Ashby design chart is employed to compare its performance to other actuators. This work provides insight into the development of next generation flexible, active multifunctional materials.