Influence of the remnant magnetization, size distribution and content of soft magnetic reinforcement in micro-mechanical behavior of polymer matrix composites

Riesgo, G.; Elbaile, L.; Moriche, R.; Carrizo, J.; Crespo, R.D.; García, María Concepción; Sepúlveda, R.; Garcı́a, J.A.; Torres, Yadir

doi:10.1016/j.polymertesting.2019.106020

Cited by 8 publications

(8 citation statements)

References 33 publications

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“…Table 3 shows that the MR foams possessed superparamagnetic properties at room temperature, since nearly zero remanences M r (0.138 emu/g for sample B and 0.216 emu/g for sample C) were observed. As discussed by Riesgo et al [ 34 ], the number of magnetic moments improved when the concentration of CIPs increased. Thus, it is believed that an increased quantity of CIPs enhanced the magnetic properties of the MR foams, as the value of M s depends on the higher magnetic moment of the CIPs.…”

Section: Resultsmentioning

confidence: 84%

Magnetic and Tunable Sound Absorption Properties of an In-Situ Prepared Magnetorheological Foam

et al. 2020

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Conventional polyurethane foam has non-tunable sound absorption properties. Here, a magneto-induced foam, called magnetorheological (MR) foam, was fabricated with the feature of being able to tune sound absorption properties, primarily from the middle- to higher-frequency ranges. Three different samples of MR foams were fabricated in situ by varying the concentration of Carbonyl Iron Particles (CIPs) (0, 35, and 75 wt.%). The magnetization properties and tunable sound absorption characteristics were evaluated. From the magnetic saturation properties, the results showed very narrow and small coercivity of hysteresis loops relative to the soft magnetic properties of the CIPs. MR foam with 75 wt.% CIPs showed a higher magnetic saturation at 91.350 emu/g compared to MR foam with 35 wt.% CIPs at 63.896 emu/g. For tunable sound absorption testing, the effect of ‘shifting’ to higher frequency was also observed when the magnetic field was applied, which was ~10 Hz for MR foam with 35 wt.% CIPs and ~130 Hz for MR foam with 75 wt.% CIPs. As the latest evolution of semi-active noise control materials, the results from this study are valuable guidance for the advancement of MR-based devices.

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Section: Resultsmentioning

confidence: 84%

Magnetic and Tunable Sound Absorption Properties of an In-Situ Prepared Magnetorheological Foam

et al. 2020

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“…The measurements of microindentation were performed in a Microtest machine (MTR3/50-50/NI) using a Vickers indenter. The details of the method followed have been shown elsewhere [47].…”

Section: Methodsmentioning

confidence: 99%

Villari Effect at Low Strain in Magnetoactive Materials

Riesgo¹,

Elbaile

Carrizo

et al. 2020

Materials

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Magnetic composites of soft magnetic FeGa particles embedded in a silicone matrix have been synthesized. The Villari effect has been studied depending on the size and concentration of the particles and on the magnetic state of the composite. The results indicate a decrease in the Villari effect when the concentration of the magnetic particles increases. These results suggest a relationship between the Villari effect and the mechanical properties of the composites. The Young’s modulus of the composites has been obtained by microindentation and their values related to the intensity and slope of the Villari signals. The results are explained on the basis that the reduction in the cross section of the composite when submitted to stress is the main origin of the variation of the magnetic flux in the Villari effect in this kind of composite. It has also been obtained that the magnetic state of the composite plays an important role in the Villari signal. When the magnetization of the composite is greater, the magnetic flux across the composite is greater too and, so, the same reduction in the cross section originates a greater Villari signal.

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“…Композиты зачастую используют не только как конструкционные, но также и как мультифункциональные материалы [231,232], которые диагностируют похожими методами. В [233,234] методами NI исследовали механические свойства границ фаз и разнофазных сварных швов, полученных сваркой трением.…”

Section: разрушение в микро- субмикрои наношкалеunclassified

Наноиндентирование И Механические Свойства Материалов В Субмикро- И Наношкале. Недавние Результаты И Достижения (О Б З О Р)

Головин¹

2021

Физика Твердого Тела

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The review discusses the details of various materials mechanical behavior in submicro- and nanoscale. Significant advances in this scope result from the development of wide family of load based precise nanotesting techniques called nanoindentation. But nowadays, nanomechanical properties are studied not only by nanoindentation techniques in narrow sense, i.e. local loading of macro, micro and nanoscale objects. Nanomechanical load testing is discussed here within a wider scope employing precise deformation measurement with nanometer scale resolution caused by various types of low load application to the object under study including uniaxial compression or extension, shearing, bending or twisting, optionally accompanied by in situ monitoring sample microstructure using scanning and transmission electron microscopy and Laue microdiffraction technique. The main courses of experimental techniques development in recent ten years along with the results obtained using them in single, poly and nano crystalline materials, composites, films and coatings, amorphous solids and such biomaterials as tissues, living cells and macromolecules are described. Special attention is paid to deformation size effects and atomic mechanisms in nanoscale. This review is a natural continuation and development of the review published at Fiz.Tverd.Tela vol.50, issue 12, 2008 of the same author that discusses details of nanomechanical properties of solids. Current review includes wider range of nanomechanical testing concepts and recent achievements in the scope. The work was supported by RFBR grant for project #19-12-50235.

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Influence of the remnant magnetization, size distribution and content of soft magnetic reinforcement in micro-mechanical behavior of polymer matrix composites

Cited by 8 publications

References 33 publications

Magnetic and Tunable Sound Absorption Properties of an In-Situ Prepared Magnetorheological Foam

Magnetic and Tunable Sound Absorption Properties of an In-Situ Prepared Magnetorheological Foam

Villari Effect at Low Strain in Magnetoactive Materials

Наноиндентирование И Механические Свойства Материалов В Субмикро- И Наношкале. Недавние Результаты И Достижения (О Б З О Р)

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