Dimorphic magnetorheological fluid with improved rheological properties

Jiang, Wanquan; Zhang, Yanli; Xuan, Shouhu; Guo, Chaoyang; Gong, Xinglong

doi:10.1016/j.jmmm.2011.07.024

Cited by 62 publications

(48 citation statements)

References 19 publications

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“…Inspired by these methods, this study aims to extend the dimorphic systems to the MRGs research for improving the rheological properties. However, the saturation magnetization value of the magnetic particles gradually decreased with the decrease of particles size [22][23][24], which may preclude the MRGs to obtain high yield stress [19]. And due to the strong fiber-to-fiber interactions and high wetted area, the particle loading is lower than spherical particles.…”

Section: Introductionmentioning

confidence: 99%

“…magnetic nanofibers, nanowires and nanosheets) have been studied in the MR literature in the past. These experiments determined that dimorphic MR materials exhibit improved rheological properties and better stability [17][18][19][20][21]. Li et al [17] fabricated and tested a series of bimodal particle MRE samples with different particle sizes of 50 and 5 μm.…”

Section: Introductionmentioning

confidence: 99%

“…Viota et al [18] confirmed that dimorphic MR fluids which fabricated based on magnetic particles with two different sizes is an efficient way to enhance the yield stress and MR effect. Jiang et al [19] employed Fe nanowires into the conventional carbonyl iron particles (CIPs) based MR fluids to prepare dimorphic MR fluids and got a greatly enhanced dynamic yield stress. In addition, Piao et al [20] and Machovsky et al [21] were reported separately that the addition of polyaniline/Fe composite nanofiber and Fe 3 O 4 /ZHS hybrid composite sheets into the CI based MR suspensions results in a significant increase in MR performance.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improved rheological properties of dimorphic magnetorheological gels based on flower-like carbonyl iron particles

Yang

Luo

et al. 2017

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improved rheological properties of dimorphic magnetorheological gels based on flower-like carbonyl iron particles

Yang

Luo

et al. 2017

Applied Surface Science

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“…The settling occurs quickly, leading to a poor MR effect. Several efforts to improve this problem, including the use of shear thickening fluids [15] or the adoption of a dimorphic MR fluid system [16], have been introduced. As the second problem, bare CI particles might go through an oxidation process when directly exposed to a carrier fluid.…”

Section: Introductionmentioning

confidence: 99%

Polyindole-Coated Soft-Magnetic Particles and their Viscoelastic Behaviors under Applied Magnetic Field

Park¹,

Kwon²,

Choi³

et al. 2019

JMAG

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To solve the sedimentation drawback of soft-magnetic carbonyl-iron (CI) particles for their application to a magneto-rheological (MR) fluid, the coating of a polyindole (PIn) onto the surfaces of CI microspheres was introduced through chemical oxidization polymerization using 4-aminobenzoic acid as a grafting chemical to increase the interaction between CI particles and PIn. The coated morphology was confirmed using a scanning electron microscope, whereas the reduced density was examined through a gas pycnometer. The effect of the coating on MR performance was analyzed using a rotation rheometer connected with a magnetic field generator. Based on the results of a dynamic oscillation rheological test, the CI/PIn-based MR fluid exhibited a more elastically solid behavior with the applied magnetic fields when compared to a pure CI-based MR suspension, showing an increased magnetic-field strength-dependent storage modulus from a strain sweep test. With a solid-like behavior under an applied external magnetic field, the storage modulus was observed to be higher than the loss modulus within the entire frequency range.

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“…But the yield stress is reduced with respect to the non-coated MR fluids. Then research starts to improve the settling and enhance the yield stress [23][24][25]. In this work CI particles are coated with xanthan gum where the experimental results show much better sedimentation improvement and enhanced yield stress.…”

Section: Introductionmentioning

confidence: 99%

ANSYS finite element design of an energy saving magneto-rheological damper with improved dispersion stability

et al. 2015

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The magnetorheological (MR) damper is one of the utmost progressive applications of asemi-active damper. Uninterrupted controllability in both on and off state is an important factor of its plenitude application. Current research is attempting to make the damper more effective and efficient by minimizing the existing limitations such as MR fluid's sedimentation, power consumption and temperature rising, and design optimization. We have broadly analyzed the optimization of MR dampers design with finite element simulation where various parameters of the MR damper have been considered for more accurate results. A prototype MR fluid has been prepared by coating the carbonyl iron particles with xanthan gum to reduce sedimentation. The SEM and Turbiscan results noticeably verify the improved sedimentation stability. In addition, a power-saving MR damper model has been developed by finite element analysis using ANSYS software. Prolonged operation raises the damper's body temperature and degrades the performance. However, in this energy-saving MR damper model the temperature is not rising to a higher value compared to the conventional dampers, and consequently promotes damper efficiency.

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Dimorphic magnetorheological fluid with improved rheological properties

Cited by 62 publications

References 19 publications

Improved rheological properties of dimorphic magnetorheological gels based on flower-like carbonyl iron particles

Improved rheological properties of dimorphic magnetorheological gels based on flower-like carbonyl iron particles

Polyindole-Coated Soft-Magnetic Particles and their Viscoelastic Behaviors under Applied Magnetic Field

ANSYS finite element design of an energy saving magneto-rheological damper with improved dispersion stability

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