Research on Dynamic and Mechanical Properties of Magnetoactive Elastomers with High Permeability Magnetic Filling Agent at Complex Magneto-Temperature Exposure

Vasilyeva, M. A.; Nagornov, Dmitry; Orlov, Grigory

doi:10.20944/preprints202101.0555.v1

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…A successful curing process in MRE fabrication yields outstanding properties to meet requirements for designing a certain typical specimen geometry in testing and analysis [ 6 , 7 ]. The matrix has a significant impact on the properties of MRE and an appropriate matrix form and fraction should be used to induce storage modulus [ 8 , 9 ]. According to a review on MRE durability evaluation [ 10 ], the usual matrix used for MRE evaluation may be categorized into three types: natural rubber (NR), synthetic rubber (SR), or a combination of NR and SR. MRE is classified into isotropic and anisotropic.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Microparticles on the Storage Modulus and Durability Behavior of Magnetorheological Elastomer

et al. 2021

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This paper presents the effect of the micro-sized particles on the storage modulus and durability characteristics of magnetorheological elastomers (MREs). The initial phase of the investigation is to determine any associations among the microparticles’ weight percent fraction (wt%), structure arrangement, and the storage modulus of MRE samples. In order to carry out this, both isotropic and anisotropic types of MRE samples consisting of the silicone rubber matrix and 50, 60, 70, 75, and 80 wt% microparticles of carbonyl iron fractions are prepared. It is identified from the magneto-rheometer that the increase in storage modulus and decrease in linear viscoelastic region limit are observed in varying consistency depending on wt% and particle arrangement. The consistency of this dependency feature is highlighted by superimposing all of the graphs plotted to create the proposed the samples’ behavior model. In response to increasing magnetic stimulation, a sample of 70 wt% microparticles with an isotropic arrangement is found to be significant and stable. The experimentally defined fraction is then used for the durability test as the second phase of the investigation. During this phase, the durability evaluation is subjected to stress relaxation for an extended period of time. After undergoing durability testing, storage modulus performance is decreased by 0.7–13% at various magnetic stimulation levels. This result directly indicates that the storage modulus characteristics of different forms of MRE are sensitive to the different iron particle fractions’ and microparticles’ alignment. Therefore, important treatments to alter the storage modulus can be undertaken before the practical implementation to accommodate any desired performance of MRE itself and MRE application systems.

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Section: Introductionmentioning

confidence: 99%

The Effect of Microparticles on the Storage Modulus and Durability Behavior of Magnetorheological Elastomer

et al. 2021

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Hardening of Bimetallic Wires from Secondary Materials Used in the Construction of Power Lines

et al. 2022

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Copper-sheathed steel wires combine the conductivity of copper and the traction resistance of steel, which makes a bimetallic wire an ideal material for the construction of power lines. Currently, there is a small number of studies devoted to the change in the microstructure of steel-copper wire during its strain. Since steel and copper have different mechanical properties, these metals at the interface can be deformed in different ways. Therefore, the present research is devoted to the study of ECAP-drawing process impacts on the properties of bimetallic steel-copper wire. During the conducted studies, the possibility and efficiency of using the combined strain technology for the formation of ultrafine grained structure and increased strength properties of steel-copper wire have been proved.

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Composites Based on Cotton Microfibers Impregnated with Magnetic Liquid for Magneto-Tactile Sensors

Bîcă

Iacobescu

2023

Materials

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In this paper, we report the preparation of two new composite materials based on cotton fibers and magnetic liquid consisting of magnetite nanoparticles and light mineral oil. Using the composites and two simple textolite plates plated with copper foil assembled with self-adhesive tape, electrical devices are manufactured. By using an original experimental setup, we measured the electrical capacitance and the loss tangent in a medium-frequency electric field superimposed on a magnetic field. We found that in the presence of the magnetic field, the electrical capacity and the electrical resistance of the device change significantly with the increase of the magnetic field, then, the electrical device is suitable to be used as a magnetic sensor. Furthermore, the electrical response functions of the sensor, for fixed values of the magnetic flux density, change linearly with the increase in the value of the mechanical deformation stress, which gives it a tactile function. When applying mechanical stresses of fixed values, by increasing the value of the magnetic flux density, the capacitive and resistive functions of the electrical device change significantly. So, by using the external magnetic field, the sensitivity of the magneto-tactile sensor increases, therefore the electrical response of this device can be amplified in the case of low values of mechanical tension. This makes the new composites promising candidates for the fabrication of magneto-tactile sensors.

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Research on Dynamic and Mechanical Properties of Magnetoactive Elastomers with High Permeability Magnetic Filling Agent at Complex Magneto-Temperature Exposure

Cited by 4 publications

References 22 publications

The Effect of Microparticles on the Storage Modulus and Durability Behavior of Magnetorheological Elastomer

The Effect of Microparticles on the Storage Modulus and Durability Behavior of Magnetorheological Elastomer

Hardening of Bimetallic Wires from Secondary Materials Used in the Construction of Power Lines

Composites Based on Cotton Microfibers Impregnated with Magnetic Liquid for Magneto-Tactile Sensors

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