The magneto-mechanical coupling of multiphase magnetorheological elastomers

Journal of Physics Condensed Matter, Год журнала: 2025, Номер 37(13), С. 135101 - 135101

Опубликована: Янв. 20, 2025

Magnetorheological elastomers (MREs) are soft magnetic composites that achieve tunable changes in stiffness and damping the presence of a field. Rigid particle composite (RC) MREs have been studied for decades their potential applications to automotive dampers robotic systems. Recently, fluid (FC) developed which utilize fluids as inclusions elastomers. An investigation into how inclusion phase affects magneto-mechanical performance may greatly improve MRE design capabilities. Here we experimentally evaluate impact solid liquid on properties, construct simple model captures diverse material architectures, demonstrate use create maps relating structure, zero-field applied field elastic modulus specific loss. The response is evaluated three architectures: RC, FC, hybrid particles, fluids, combination two respectively. through mechanical energy principles, suggests impacts change density during deformation. We show coupling factor dependent properties composites, allows development inform fabrication based desired properties.

Язык: Английский

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Recycled Ferromagnetic Fillers Endow Excellent Magnetic Field Tunable Viscosity and Electromagnetic Radiation Shielding within Elastomer Composites

Advanced Engineering Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 14, 2025

We report the integration of an unconventional filler ferrosilicon nitride (FSN), within two elastomers, to develop composites having concurrent magnetic field‐tunable viscosity and electromagnetic radiation shielding capabilities. FSN is a refractory ceramic which possesses soft ferromagnetic nature low electrical conductivity at room temperature. Moreover, porous microstructure light weight enables disperse uniformly making it attractive magnetically active filler, domain that remains unexplored. Recycled FSN, possessing irregular morphology was integrated varying parts per hundred rubber hydrogenated nitrile butadiene (HNBR), liquid silicone (SR), different values stiffness. displays good dispersion HNBR matrix leading improved mechanical properties; however, minor agglomeration occurs softer SR. The fillers align well with external field sweep 0 ↔ 1 T, effectively altering by 42% in 59.3% Furthermore, demonstrate excellent across X Ku bands. primary mode absorption through resonance particles, subdued reflection component. Thus, recycled can be capitalized where functionality should complement sustainability 3R targets.

Язык: Английский

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Semi-analytical framework for nonlinear vibration analysis of hard-magnetic soft beams

International Journal of Mechanical Sciences, Год журнала: 2025, Номер unknown, С. 110149 - 110149

Опубликована: Март 1, 2025

Язык: Английский

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Magnetically induced deformation of isotropic magnetoactive elastomers and its relation to the magnetorheological effect

Physical Review Applied, Год журнала: 2025, Номер 23(3)

Опубликована: Март 19, 2025

Can isotropic magnetoactive elastomers (MAEs) undergo giant magnetically induced deformations and exhibit huge magnetorheological effects simultaneously? In this experimental theoretical study, we reveal how the macroscopic deformation of MAEs relates to process particle restructuring caused by application a magnetic field. For purpose, MAE cylinders with different aspect ratios loadings are studied in uniform fields. The axial acquired using an optical camera. A unified mean-field model proposed previous studies is adapted describe transition initially into transversely ones. This mechanical rearrangement particles dense columnar structures aligned field believed result effect. Our however predicts less than threefold increase elastic moduli when evaluated along direction. prediction based on careful examination shear structures. weak effect explains significant measured strong would hinder due modulus several orders magnitude. Not only influenced microstructure evolution, but so magnetization particles, which increases as they rearrange columns. With show that provides quantitative access hidden material properties such stiffness samples shapes evolving microstructures. Published American Physical Society 2025

Язык: Английский

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Rubber Fatigue Revisited: A State-of-the-Art Review Expanding on Prior Works by Tee, Mars and Fatemi

Polymers, Год журнала: 2025, Номер 17(7), С. 918 - 918

Опубликована: Март 28, 2025

Rubber materials can endure substantial deformation while avoiding permanent damage or rupture, making them highly suitable for applications in the automotive industry and other sectors, particularly noise vibration reduction. However, rubber experiences degradation over time as defects cracks appear propagate under fluctuating loads. Therefore, it is of critical importance to prevent failure components during service. As highlighted prior literature surveys by Tee et al. 2018, Mars Fatemi 2002 2004, significant research has focused on mechanics analysis fatigue. This body work grown rapidly continues evolve. this study aims compile analyze vast recent fatigue conducted last decade, supplementing reviews 2004. The gathered studies were analyzed identify current trends emerging gaps rubber, including advanced composite such magnetorheological elastomers (MREs). review emphasizes techniques experiments available life prediction materials, illustrating their practical engineering analyses through specific examples.

Язык: Английский

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Design and verification of a magnetorheological elastomer - based vibration isolator with adjustable stiffness

Structures, Год журнала: 2025, Номер 75, С. 108762 - 108762

Опубликована: Апрель 1, 2025

Язык: Английский

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Elastic wave propagation in magneto-active fibre composites

International Journal of Solids and Structures, Год журнала: 2025, Номер unknown, С. 113373 - 113373

Опубликована: Апрель 1, 2025

Язык: Английский

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

Sensors and Actuators A Physical, Год журнала: 2024, Номер 373, С. 115425 - 115425

Опубликована: Май 3, 2024

Язык: Английский

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Evidential neural network for tensile stress uncertainty quantification in thermoplastic elastomers

Neural Computing and Applications, Год журнала: 2024, Номер 36(33), С. 20687 - 20697

Опубликована: Авг. 15, 2024

Язык: Английский

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Single-layer iron network microstructure magnetorheological elastomer for transparent soft actuator

Chemical Engineering Journal, Год журнала: 2024, Номер 500, С. 157167 - 157167

Опубликована: Окт. 28, 2024

Язык: Английский

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