Xianzhou Zhang et al 2008 Smart Mater. Struct. 17 015051 doi:10.1088/0964-1726/17/1/015051
Study on magnetorheological shear thickening fluid
Xianzhou Zhang1, Weihua Li1 and X L Gong2
Show affiliationsIn this paper, a magnetic-field-controlled and speed-activated magnetorheological shear thickening fluid (MRSTF) is presented. We fabricated a kind of shear thickening fluid (STF) which was composed of nanosize silica particles suspended in a solvent, ethylene glycol, at high concentrations. Then the micron-size carbonyl iron particles with different volume fractions were added to the STF to fabricate the MRSTF. Their dynamic properties in different shear strain rates and magnetic fields were tested by using a rheometer. The suspension shows an abrupt increase in complex viscosity beyond a critical dynamic shear rate and a magnetic-field-controllable characteristic, as well as being reversible.
- PACS
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83.80.Gv Electro- and magnetorheological fluids
47.61.-k Micro- and nano- scale flow phenomena
83.85.Vb Small amplitude oscillatory shear (dynamic mechanical analysis)
83.60.Np Effects of electric and magnetic fields
83.60.Rs Shear rate-dependent structure (shear thinning and shear thickening)
- Subjects
- Dates
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Issue 1 (February 2008)
Received 30 September 2007, in final form 23 November 2007
Published 17 January 2008
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Study on magnetorheological shear thickening fluid
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