Effect of Temperature and Relative Humidity on Friction and Wear Properties of Silicone-Based Magnetorheological Elastomer

Lian, Chenglong; Lee, Kwang-Hee; Lee, Chulhee

doi:10.1080/10402004.2017.1306636

Cited by 22 publications

(14 citation statements)

References 20 publications

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“…They found that the hardness of all MRE samples increased to varying degrees after application of the magnetic field, resulting in a change in the friction and wear characteristics of MRE. In addition, Lian et al [17,18] have also carried out experiments to study the effects of some external environmental factors on the friction characteristics of MRE. The research shows that vibration, temperature, and relative humidity all affect the friction characteristics of MRE.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on surface roughness of magnetorheological elastomer for controllable friction

et al. 2019

Friction

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Magnetorheological elastomer (MRE) is a type of smart material of which mechanical and electrical properties can be reversibly controlled by the magnetic field. In this study, the influence of the magnetic field on the surface roughness of MRE was studied by the microscopic modeling method, and the influence of controllable characteristics of the MRE surface on its friction properties was analyzed by the macroscopic experimental method. First, on the basis of existing studies, an improved mesoscopic model based on magnetomechanical coupling analysis was proposed. The initial surface morphology of MRE was characterized by the W-M fractal function, and the change process of the surface microstructures of MRE, induced by the magnetic interaction between particles, was studied. Then, after analyzing the simulation results, it is found that with the increase in the magnetic field and decrease in the modulus of rubber matrix, the surface of MRE changes more significantly, and the best particle volume fraction is within 7.5%-9%. Furthermore, through experimental observation, it is found that the height of the convex peak on the surface of MRE decreases significantly with the action of the magnetic field, resulting in a reduction in the surface roughness. Consistent with the simulation results, a particle volume fraction of 10% corresponds to a maximum change of 14%. Finally, the macroscopic friction experiment results show that the friction coefficients of MREs with different particle volume fractions all decrease with the decrease in surface roughness under the magnetic field. When the particle volume fraction is 10%, the friction coefficient can decrease by 24.7% under a magnetic field of 400 mT, which is consistent with the trend of surface roughness changes. This shows that the change in surface morphology with the effect of the magnetic field is an important factor in the control of MRE friction properties by magnetic field.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on surface roughness of magnetorheological elastomer for controllable friction

et al. 2019

Friction

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“…In our recent characterization of this effect, we found that the root mean square (RMS) roughness was in the range of 1 µm/T [25]. Other phenomena on MAE surfaces that were also demonstrated to be regulable by a magnetic field are wettability [14,15,[26][27][28], adhesive properties [29][30][31][32], friction [33][34][35][36][37][38], drop splashing [39] and surface optical properties [21]. For the latter, it was demonstrated that the total optical reflectivity and the type of reflection (specular or diffuse) could be controlled by the magnetic field.…”

Section: Introductionmentioning

confidence: 93%

Reconfigurable Surface Micropatterns Based on the Magnetic Field-Induced Shape Memory Effect in Magnetoactive Elastomers

et al. 2021

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A surface relief grating with a period of 30 µm is embossed onto the surface of magnetoactive elastomer (MAE) samples in the presence of a moderate magnetic field of about 180 mT. The grating, which is represented as a set of parallel stripes with two different amplitude reflectivity coefficients, is detected via diffraction of a laser beam in the reflection configuration. Due to the magnetic-field-induced plasticity effect, the grating persists on the MAE surface for at least 90 h if the magnetic field remains present. When the magnetic field is removed, the diffraction efficiency vanishes in a few minutes. The described effect is much more pronounced in MAE samples with larger content of iron filler (80 wt%) than in the samples with lower content of iron filler (70 wt%). A simple theoretical model is proposed to describe the observed dependence of the diffraction efficiency on the applied magnetic field. Possible applications of MAEs as magnetically reconfigurable diffractive optical elements are discussed. It is proposed that the described experimental method can be used as a convenient tool for investigations of the dynamics of magnetically induced plasticity of MAEs on the micrometer scale.

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“…Numerous polymers can be used as elastomer matrices. Among them, natural rubber [20][21][22] , silicone rubber [23][24][25] and polyurethane [26][27][28][29] are three kinds of usually used matrices as we have known.…”

Section: Elastomer Matricesmentioning

confidence: 99%

“…Generally, magnetoresponsive composite elastomers for bionic locomotion applications are mainly composed of flexible elastomeric matrices like natural rubber [20][21][22] , silicone rubber [23][24][25] , polyurethane rubber [26][27][28][29] , polybutadiene rubber [30] , and embedded hard micro-sized or nano-sized magnetic particles. To improve their mechanical performance or endow them with exceptional characteristics, a small quantity of additives is admixed.…”

Section: Introductionmentioning

confidence: 99%

Building Magnetoresponsive Composite Elastomers for Bionic Locomotion Applications

Sheng

Zhang

et al. 2020

J Bionic Eng

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The ability of natural living organisms, transferring deformations into locomotion, has attracted researchers’ increasing attention in building bionic actuators and smart systems. As a typical category of functional materials, magnetoresponsive composite elastomers, comprised of flexible elastomer matrices and rigid magnetic particles, have been playing critical roles in this field of research due to their dynamic changes in response to applied magnetic field direction and intensity. The magnetically driven bionic actuators based on magnetoresponsive composite elastomers have been developed to achieve some specific functions in some special fields. For instance, under the control of the applied magnetic field, the bionic actuators can not only generate time-varying deformation, but also motion in diverse environments, suggesting new possibilities for target gripping and directional transporting especially in the field of artificial soft robots and biological engineering. Therefore, this review comprehensively introduces the component, fabrication, and bionic locomotion application of magnetoresponsive composite elastomers. Moreover, existing challenges and future perspectives are further discussed.

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Effect of Temperature and Relative Humidity on Friction and Wear Properties of Silicone-Based Magnetorheological Elastomer

Cited by 22 publications

References 20 publications

Experimental and numerical study on surface roughness of magnetorheological elastomer for controllable friction

Experimental and numerical study on surface roughness of magnetorheological elastomer for controllable friction

Reconfigurable Surface Micropatterns Based on the Magnetic Field-Induced Shape Memory Effect in Magnetoactive Elastomers

Building Magnetoresponsive Composite Elastomers for Bionic Locomotion Applications

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