An experimental investigation on the matrix dependent rheological properties of MRE

Poojary, Umanath R; Kiran, Katari; Hegde, Sriharsha; Gangadharan, KV

doi:10.1177/1045389x231188163

Cited by 3 publications

(1 citation statement)

References 77 publications

(161 reference statements)

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“…This process can be understood more clearly in Figure 2. However, some limitations of such soft MREs are the limited load-bearing capacity and complex modeling and design [32]. Overall, researchers will continue to explore ways to study new and novel designs of MREs that can examine the optimized properties as per the application in need.…”

Section: Mechanical Properties Under Static Compression Modementioning

confidence: 99%

Stretchable Magneto-Mechanical Configurations with High Magnetic Sensitivity Based on “Gel-Type” Soft Rubber for Intelligent Applications

Kumar,

Park

2024

Gels

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“Gel-type” soft and stretchable magneto-mechanical composites made of silicone rubber and iron particles are in focus because of their high magnetic sensitivity, and intelligence perspective. The “intelligence” mentioned here is related to the “smartness” of these magneto-rheological elastomers (MREs) to tune the “mechanical stiffness” and “output voltage” in energy-harvesting applications by switching magnetic fields. Hence, this work develops “gel-type” soft composites based on rubber reinforced with iron particles in a hybrid with piezoelectric fillers such as barium titanate. A further aspect of the work relies on studying the mechanical stability of intelligence and the stretchability of the composites. For example, the stretchability was 105% (control), and higher for 158% (60 per 100 parts of rubber (phr) of barium titanate, BaTiO3), 149% (60 phr of electrolyte iron particles, EIP), and 148% (60 phr of BaTiO3 + EIP hybrid). Then, the magneto-mechanical aspect will be investigated to explore the magnetic sensitivity of these “gel-type” soft composites with a change in mechanical stiffness under a magnetic field. For example, the anisotropic effect was 14.3% (60 phr of EIP), and 4.4% (60 phr of hybrid). Finally, energy harvesting was performed. For example, the isotropic samples exhibit ~20 mV (60 phr of BaTiO3), ~5.4 mV (60 phr of EIP), and ~3.7 mV (60 phr of hybrid). However, the anisotropic samples exhibit ~5.6 mV (60 phr of EIP), and ~8.8 mV (60 phr of hybrid). In the end, the composites prepared have three configurations, namely one with electro-mechanical aspects, another with magnetic sensitivity, and a third with both features. Overall, the experimental outcomes will make fabricated composites useful for different intelligent and stretchable applications.

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Section: Mechanical Properties Under Static Compression Modementioning

confidence: 99%

Stretchable Magneto-Mechanical Configurations with High Magnetic Sensitivity Based on “Gel-Type” Soft Rubber for Intelligent Applications

Kumar,

Park

2024

Gels

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Stretchable rubber composites with lower hysteresis losses, improved magnetic effect, and a robust magnetic sensitivity

Kumar,

Alam,

Yewale

et al. 2024

Sensors and Actuators A: Physical

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Parameter optimization of anisotropic polarization in magnetorheological elastomers for enhanced impact absorption capability using the Taguchi method

Sobri,

Hudha,

Kadir

et al. 2024

Journal of the Mechanical Behavior of Materials

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Magnetorheological elastomers (MREs) are intelligent materials that exhibit changes in their properties when exposed to a magnetic field. By applying a magnetic field during the curing process, MRE can be made anisotropic. This study focuses on optimizing the fabrication process parameters using the design of an experimental approach, namely the Taguchi method. The parameters to be optimized for MRE fabrication include the number of coil turns, coil diameter, curing current, and curing time. Twenty-five sets of anisotropic MRE were fabricated and subjected to drop impact testing to evaluate their impact absorption capability. The results were further examined for a more comprehensive analysis using the signal-to-noise ratio, analysis of means, and analysis of variance. This rigorous examination aimed to pinpoint the optimal parameters and the key factors influencing the fabrication of the MRE. From the analysis result, it can be seen that the number of coil turns contributed to 63.36% of the entire MRE fabrication process. Furthermore, a well-defined composition for the MRE was identified, consisting of 200 coil turns, a coil diameter of 1.0 mm, an applied current of 1.2 A, and a curing time of 20 min.

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An experimental investigation on the matrix dependent rheological properties of MRE

Cited by 3 publications

References 77 publications

Stretchable Magneto-Mechanical Configurations with High Magnetic Sensitivity Based on “Gel-Type” Soft Rubber for Intelligent Applications

Stretchable Magneto-Mechanical Configurations with High Magnetic Sensitivity Based on “Gel-Type” Soft Rubber for Intelligent Applications

Stretchable rubber composites with lower hysteresis losses, improved magnetic effect, and a robust magnetic sensitivity

Parameter optimization of anisotropic polarization in magnetorheological elastomers for enhanced impact absorption capability using the Taguchi method

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