The Synthesis of Organic Oils Blended Magnetorheological Fluids with the Field-Dependent Material Characterization

Abstract

Automation is one of the trending terminologies in the field of engineering to achieve various sensors and actuators such as the hydraulic system. Smart fluid is also one of the hot topics for researchers to develop a type of actuator in many control systems since the fluid’s rheological characteristics can be controlled or tuned by the intensity of the external stimuli. In this work, a new smart fluid of magnetorheological (MR) fluid is proposed and its field-dependent rheological characteristics are experimentally identified. An MR fluid using the carrier fluid as the blend of three different fluids, namely silicon oil, honey, and organic oil is prepared. In addition, two types of natural oils are used, sunflower oil and cottonseed oil. The samples are prepared using the blend as the carrier fluid, electrolytic iron powder coated with guar gum as the dispersed phase, and oleic acid as an additive. The quantity of oleic acid is optimized for 30% by weight of electrolytic iron powder. Two samples based on sunflower and cottonseed oil are synthesized and characterized for shear viscosity and shear stress with respect to shear rate subjected to a variable magnetic field. The blend-based MR fluid shows about 10% improvement over the sedimentation rate of silicon oil-based MR fluid as compared to that to conventional MR fluid. The cottonseed oil blend-based MR fluid performs better than sunflower-based fluid in terms of the viscosity and structure.

Investigation of the well-dispersed magnetorheological oil-based suspension with superparamagnetic nanoparticles using modified split Hopkinson pressure bar

“…Sedimentation can be caused by the density mismatch between SPIONs@OA and oil, although the stability is much higher in comparison to other liquids, where the deposition reaches even 60% (Zhang et al 2009, Jinaga et al 2019, Kumar et al 2019.…”

Performance and Stability of Magnetorheological Fluids—A Detailed Review of the State of the Art

“…Jinaga et al [ 148 ] showed that sedimentation stability, off‐state viscosity, and τ y of MRFs could be further improved by blending silicon oil, honey with cottonseed oil (20.13 kPa), and Su (17.73 kPa). In a similar study with EI and CI, Vannarth et al [ 149 ] prepared MRFs using natural mahua oil (MO) and simarouba oil (SO) extracted by cold pressing.…”

Magnetorheological fluids: A concise review of composition, physicochemical properties, and models

“…The same behavior is observed for the shear stress of MRF that increases with the applied external magnetic field until becoming field-independent. MRF is usually made of ferromagnetic, ferrimagnetic, or superparamagnetic colloidal suspension dispersed in liquid media like oil (Elizabeth Premalatha et al, 2012; Galindo-Gonzalez et al, 2016; Jinaga et al, 2019; Zhu et al, 2019), so the magnetic properties of the MRF depend on magnetization. Although MRF reveals the ability to respond rapidly to the magnetic field, they tend to sediment, decreasing their long-term stability (Park et al, 2009; Prajapati and Lakdawala, 2022; Wereley et al, 2006).…”