Magnetic field-dependent inductance properties based on magnetorheological elastomer  

基于磁流变弹性体的磁致电感特性

作　　者：JU Ben-xiang WANG Xiao-long 居本祥;王小龙(College of Mechanical Engineering,Chongqing University of Technology,Chongqing 400054,China;College of Mechanical Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]College of Mechanical Engineering,Chongqing University of Technology,Chongqing 400054,China [2]College of Mechanical Engineering,North University of China,Taiyuan 030051,China

出　　处：《Journal of Central South University》2022年第4期1075-1084,共10页中南大学学报（英文版）

基　　金：Project(cstc2019jcyj-msxm X0005)supported by General Program of Chongqing Natural Science Foundation,China;Project(51905062)supported by the National Natural Science Foundation of China。

摘　　要：Magnetorheological(MR)materials are a class of smart material,whose the mechanical/rheological state can be controlled under a magnetic field.Magnetorheological materials are typically fluids,gels,or elastomers.In this study,anisotropic and isotropic magneto-rheological elastomer(MRE)samples were fabricated using a silicone rubber matrix with carbonyl iron particles as filler particles.The magnetic field-dependent inductance properties of these samples were studied using inductors specially designed for the analysis.The effect of the filler particle content,fabrication conditions,and inductance properties were characterized using a self-built system in both constant and transient magnetic fields.These factors show a significant effect on the inductance properties of the MRE inductor under an applied magnetic field.The anisotropic MRE inductor was more sensitive than the inductor based on an isotropic MRE.Owing to the presence of a constant magnetic field,the inductance value of the MRE inductor decreased with an increase in the external magnetic field.An attempt in elucidation of the mechanism is reported here.This study may enable the MRE to be widely used in practical applications such as monitoring magnetic field or detecting the filler particle content inside MR materials.磁流变(MR)材料是一类智能材料,通常为流体、胶泥或弹性体状,其特性可以利用磁场进行控制。在本研究中,利用硅橡胶基体与羰基铁粉填充颗粒制备各向同性与各向异性磁流变弹性体,为研究磁流变弹性体的磁致电感特性设计了试验电感器。采用自建的可产生恒定与瞬态激励磁场的试验系统表征磁流变弹性体的填充颗粒含量、制备条件等因素对磁致电感特性的影响。研究结果表明:上述影响因素对磁流变弹性体电感器在外加磁场下的电感特性有明显影响,各向同性磁流变弹性体电感器的电感变化比各向异性磁流变弹性体电感器的更为显著。此外,在恒定磁场作用下,磁流变弹性体电感器的电感值随着外加磁场激励的增强而衰减,并深入分析了磁致影响机理。本研究成果可以促进磁流变弹性体用于检测外磁场或磁流变材料内部填充颗粒含量。

关 键 词：magnetorheological elastomer magnetorheological elastomer(MRE)inductor INDUCTANCE constant magnetic field transient magnetic field 

分 类 号：TB381[一般工业技术—材料科学与工程]