0
  • DE
  • EN
  • FR
  • International Database and Gallery of Structures

Advertisement

High-speed videomicroscopy of sheared carbonyl iron suspensions

Author(s):



ORCID
Medium: journal article
Language(s): English
Published in: Smart Materials and Structures, , n. 2, v. 32
Page(s): 025004
DOI: 10.1088/1361-665x/acaadc
Abstract:

The postyield rheological regime is investigated in sheared magnetic field-responsive composites (i.e. carbonyl iron based magnetorheological fluids). When subjected to uniaxial DC fields, high-speed videomicroscopy techniques and dedicated image analysis tools demonstrate that dispersed magnetic microparticles self-assemble to form concentric layered patterns above a particular shear rate ( γ ˙ R ,c ). This critical shear rate for layer formation is dictated by a critical Mason number M n c 1 that is associated to the destruction of the last doublet in the chain-like aggregates. The number of layers, mean width, percentage of occupation and mean period are found to be very weakly dependent on the shear rate in start-up shearing flow tests. Experimental data for the mean period are in good agreement with an energy minimization theory.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1088/1361-665x/acaadc.
  • About this
    data sheet
  • Reference-ID
    10707579
  • Published on:
    21/03/2023
  • Last updated on:
    21/03/2023
 
Structurae cooperates with
International Association for Bridge and Structural Engineering (IABSE)
e-mosty Magazine
e-BrIM Magazine