Sensing Behavior of Magnetorheological Elastomers

被引:64
作者
Wang, Xiaojie [1 ]
Gordaninejad, Faramarz [1 ]
Calgar, Mert [1 ]
Liu, Yanming [1 ]
Sutrisno, Joko [2 ]
Fuchs, Alan [2 ]
机构
[1] Univ Nevada, Dept Mech Engn, Composite & Intelligent Mat Lab, Reno, NV 89557 USA
[2] Univ Nevada, Dept Chem & Met Engn, Polymer Sci Lab, Reno, NV 89557 USA
关键词
compressive strength; elastomers; electrical conductivity; ferromagnetic materials; filled polymers; magnetic particles; magnetic sensors; magnetorheology; stress-strain relations; POLYMER MATRIX; COMPOSITES; MAGNETORESISTANCE; IMPEDANCE;
D O I
10.1115/1.3160316
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
A magnetorheological elastomer (MRE) is comprised of ferromagnetic particles aligned in a polymer medium by exposure to a magnetic field. The structures of the magnetic particles within elastomers are very sensitive to the external stimulus of either mechanical force or magnetic field, which result in multiresponse behaviors in a MRE. In this study, the sensing properties of MREs are investigated through experimentally characterizing the electrical properties of MRE materials and their interfaces with external stimulus (magnetic field or stress/strain). A phenomenological model is proposed to understand the impedance response of MREs under mechanical loads and magnetic fields. Results show that MRE samples exhibit significant changes in measured values of impedance and resistance in response to compressive deformation, as well as the applied magnetic field.
引用
收藏
页码:0910041 / 0910046
页数:6
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