Granular Matter

, Volume 10, Issue 6, pp 407–414

Structure in cohesive powders studied with spin-echo small angle neutron scattering

  • R. Andersson
  • W. G. Bouwman
  • S. Luding
  • I. M. de Schepper
Open Access
Article

DOI: 10.1007/s10035-008-0109-z

Cite this article as:
Andersson, R., Bouwman, W.G., Luding, S. et al. Granular Matter (2008) 10: 407. doi:10.1007/s10035-008-0109-z

Abstract

Extracting structure and ordering information from the bulk of granular materials is a challenging task. Here we present Spin-Echo Small Angle Neutron Scattering Measurements in combination with computer simulations on a fine powder of silica, before and after uniaxial compression. The cohesive powder packing is modeled by using molecular dynamics simulations and the structure, in terms of the density–density correlation function, is calculated from the simulation and compared with experiment. In the dense case, both quantitative and qualitative agreement between measurement and simulations is observed, thus creating the desired link between experiment and computer simulation. Further simulations with appropriate attractive potentials and adequate preparation procedures are needed in order to capture the very loose-packed cohesive powders.

Keywords

SESANS Powder Cohesion Structure Density correlation Molecular dynamics 
Download to read the full article text

Copyright information

© The Author(s) 2008

Authors and Affiliations

  • R. Andersson
    • 1
  • W. G. Bouwman
    • 1
  • S. Luding
    • 2
    • 3
  • I. M. de Schepper
    • 1
  1. 1.Radiation, Radionuclides and ReactorsDelft University of TechnologyDelftThe Netherlands
  2. 2.Nanostructured Materials, DCTDelft University of TechnologyDelftThe Netherlands
  3. 3.Multi Scale Mechanics, TS, CTW Department of Mechanical EngineeringUniversity of TwenteEnschedeThe Netherlands

Personalised recommendations