The Magneto-Mechanical Behavior of Active Components in Iron-Elastomer Composite

Samal, Sneha; Kolinova, Marcela; Blanco, Ignazio

doi:10.3390/jcs2030054

Cited by 34 publications

(36 citation statements)

References 26 publications

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“…The mold was fixed to the cover with the help of bolts (5). The tight closure of the mold by covers (1) was ensured by properly tensioned aluminum alloy bolts (2). During sample curing, the mold was subjected to a magnetic field along their axles.…”

Section: Sample Preparationmentioning

confidence: 99%

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Magnetorheological Elastomer Stress Relaxation Behaviour during Compression: Experiment and Modelling

et al. 2020

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Materials characterized by magnetorheological properties are non-classic engineering materials. A significant increase in the interest of the scientific community about this group of materials could be observed over the recent years. The results of research presented in this article are oriented on the examination of the said materials’ mechanical properties. Stress relaxation tests were carried out on cylindrical samples of magnetorheological elastomers loaded with compressive stress, for various values of magnetic induction (B1 = 0 mT, B2 = 32 mT, B3 = 48 mT, and B4 = 64 mT) and temperature (T1 = 25 °C, T2 = 30 °C, and T3 = 40 °C). The results of these tests indicate that the stiffness of the examined samples increased along with the increase of magnetic field induction, and decreased along with the increase of temperature. On this basis, it has been determined that: the biggest stress amplitude change, caused by the influence of magnetic field, was σ0ΔB = 12.7%, and the biggest stress amplitude change, caused by the influence of temperature, was σ0ΔT = 11.3%. As a result of applying a mathematical model, it was indicated that the stress relaxation in the examined magnetorheological elastomer, for the adopted time range (t = 3600 s), had a hyperbolic decline nature. The collected test results point to the examined materials being characterized by extensive rheological properties, which leads to the conclusion that it is necessary to conduct further tests in this area.

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Section: Sample Preparationmentioning

confidence: 99%

“…Magnetorheological elastomers (MRE) are a group of composite materials, the mechanical properties of which change under the influence of an applied magnetic field [1,2]. This change occurs in a time range counting up to several milliseconds, and is fully reversible [3,4].…”

Section: Introductionmentioning

confidence: 99%

Magnetorheological Elastomer Stress Relaxation Behaviour during Compression: Experiment and Modelling

et al. 2020

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“…The internal defects include fiber pull out, misalignment of the fiber, cracks, and damage to the matrix. In this work, we addressed the detailed statistical characterization of geometrical defects in the impacted fabric reinforced composite with 3D images captured by µCT to visualize the interior structural details with high resolution on a scale of interest for damage evaluation of the composite [21,22]. The relationships between the damaged area/volume and impact energies were established, and the composite was characterized, not only investigating the volume of the damaged area, but also the internal damage area including the internal structure and fiber breakage on the various layers of the composite structure.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Internal Structure of Fiber Reinforced Geopolymer Composite under Mechanical Impact: A Micro Computed Tomography (µCT) Study

et al. 2019

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The internal structure of fiber reinforced geopolymer composite was investigated by microfocus X-ray computed tomography (µCT) under mechanical impact. µCT is a non-destructive, multi approach technique for assessing the internal structures of the impacted composites without compromising their integrity. The three dimensional (3D) representation was used to assess the impact damage of geopolymer composites reinforced with carbon, E-glass, and basalt fibers. The 3D representations of the damaged area with the visualization of the fiber rupture slices are presented in this article. The fiber pulls out, and rupture and matrix damage, which could clearly be observed, was studied on the impacted composites by examining slices of the damaged area from the center of the damage towards the edge of the composite. Quantitative analysis of the damaged area revealed that carbon fabric reinforced composites were much less affected by the impact than the E-glass and basalt reinforced composites. The penetration was clearly observed for the basalt based composites, confirming µCT as a useful technique for examining the different failure mechanisms for geopolymer composites. The durability of the carbon fiber reinforced composite showed better residual strength in comparison with the E-glass fiber one.

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“…The interest in this type of materials is constantly increasing due to the inexhaustible possibilities of their applications. In addition, compared to the well-known magnetorheological fluids [MRFs] there is still a lot to improve in terms of both material and processing issues [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…Based on the survey of the subject literature [1,2,4,5] it can be concluded that it is easier and cheaper to manufacture isotropic than anisotropic elastomers. The mechanical properties of the former offer prospects of wide industrial application.…”

Section: Introductionmentioning

confidence: 99%

Reinforced, Extruded, Isotropic Magnetic Elastomer Composites: Fabrication and Properties

Masłowski

Miedzianowska

Strzelec

2019

Advances in Polymer Technology

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The study involves the development of isotropic magnetorheological elastomer composites (i-MREs) with improved mechanical properties, their preparations, and properties characterizations. The novelty of the research is the use of extrusion process in the preparation of composites containing two different fillers: carbonyl iron powder (CIP) as magnetic filler and carbon black (FEF, N550) as reinforcing one. So far, the process of extrusion has been used to prepare magnetic composites without filler that improve mechanical properties. It is worth mentioning that the polymer matrix (ethylene-octene copolymer, EOR) offers excellent performance in extrusion applications. In this research, two methods of magnetic composites preparation were reported: traditional, during two-roll mill, and a new one using extrusion process. It was found that the usage of new processing technology allowed forming more homogenous dispersion of particles in elastomer matrix and oriented polymer chains, resulting in an improved rheometric characteristic, increased crosslink density, and decrease of the storage modulus (Payne effect). Based on both static/dynamic mechanical properties and damping properties under the influence of compression stress, the positive influence of extrusion process on material characteristics was confirmed. Moreover, all composites proved very good magnetic properties and resistance to thermooxidative ageing.

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The Magneto-Mechanical Behavior of Active Components in Iron-Elastomer Composite

Cited by 34 publications

References 26 publications

Magnetorheological Elastomer Stress Relaxation Behaviour during Compression: Experiment and Modelling

Magnetorheological Elastomer Stress Relaxation Behaviour during Compression: Experiment and Modelling

Investigation of the Internal Structure of Fiber Reinforced Geopolymer Composite under Mechanical Impact: A Micro Computed Tomography (µCT) Study

Reinforced, Extruded, Isotropic Magnetic Elastomer Composites: Fabrication and Properties

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