Direct measurement of the effect of adhesion on powder flow behavior: Experimental and DEM investigations

K. Bose; R. Moreno; S. J. Antony; Y. Ding; S. R. Biggs; M. Ghadiri; D. Rhodes; A. Milliken

Direct measurement of the effect of adhesion on powder flow behavior: Experimental and DEM investigations

K. Bose, R. Moreno, S. J. Antony, Y. Ding, S. R. Biggs, M. Ghadiri, D. Rhodes, A. Milliken

Research output: Chapter in Book/Conference paper › Conference paper

Abstract

The current study adapts a novel approach to directly measure the effect of particle adhesion on the bulk powder flow characteristics. This is achieved by modifying the adhesion of spherical glass particles (mean size: 38 μm) through a protocol that involves the deposition of surface silane monolayers on individual glass particles. The increase in particle surface energy has been characterized by particle-particle pull off force measurements using Atomic Force Microscopy. An annular shear cell has been used to measure flow properties and to quantify the effect of surface energy of the silanized glass particles on their bulk cohesion. Computer simulations using the Distinct Element Method (DEM) have also been carried out. The DEM simulations use JKR adhesion model to incorporate the surface energy values of glass beads corresponding to the AFM pull-off force measurements. The Unconfined Yield Stress (UYS) and Flow Factor (ff) obtained by the simulations have been compared with the experiments.

Original language	English
Title of host publication	Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
Pages	555-558
Number of pages	4
Volume	1
Publication status	Published - 1 Dec 2005
Externally published	Yes
Event	5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005 - Stuttgart, Germany Duration: 18 Jul 2005 → 22 Jul 2005

Conference

Conference	5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005
Country	Germany
City	Stuttgart
Period	18/07/05 → 22/07/05

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@inproceedings{f122c0bc73da405389ee33f5418857de,

title = "Direct measurement of the effect of adhesion on powder flow behavior: Experimental and DEM investigations",

abstract = "The current study adapts a novel approach to directly measure the effect of particle adhesion on the bulk powder flow characteristics. This is achieved by modifying the adhesion of spherical glass particles (mean size: 38 μm) through a protocol that involves the deposition of surface silane monolayers on individual glass particles. The increase in particle surface energy has been characterized by particle-particle pull off force measurements using Atomic Force Microscopy. An annular shear cell has been used to measure flow properties and to quantify the effect of surface energy of the silanized glass particles on their bulk cohesion. Computer simulations using the Distinct Element Method (DEM) have also been carried out. The DEM simulations use JKR adhesion model to incorporate the surface energy values of glass beads corresponding to the AFM pull-off force measurements. The Unconfined Yield Stress (UYS) and Flow Factor (ff) obtained by the simulations have been compared with the experiments.",

author = "K. Bose and R. Moreno and Antony, {S. J.} and Y. Ding and Biggs, {S. R.} and M. Ghadiri and D. Rhodes and A. Milliken",

year = "2005",

month = dec,

day = "1",

language = "English",

isbn = "0415383471",

volume = "1",

pages = "555--558",

booktitle = "Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media",

note = "5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005 ; Conference date: 18-07-2005 Through 22-07-2005",

}

Bose, K, Moreno, R, Antony, SJ, Ding, Y, Biggs, SR, Ghadiri, M, Rhodes, D & Milliken, A 2005, Direct measurement of the effect of adhesion on powder flow behavior: Experimental and DEM investigations. in Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media. vol. 1, pp. 555-558, 5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005, Stuttgart, Germany, 18/07/05.

Direct measurement of the effect of adhesion on powder flow behavior : Experimental and DEM investigations. / Bose, K.; Moreno, R.; Antony, S. J.; Ding, Y.; Biggs, S. R.; Ghadiri, M.; Rhodes, D.; Milliken, A.

Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media. Vol. 1 2005. p. 555-558.

Research output: Chapter in Book/Conference paper › Conference paper

TY - GEN

T1 - Direct measurement of the effect of adhesion on powder flow behavior

T2 - 5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005

AU - Bose, K.

AU - Moreno, R.

AU - Antony, S. J.

AU - Ding, Y.

AU - Biggs, S. R.

AU - Ghadiri, M.

AU - Rhodes, D.

AU - Milliken, A.

PY - 2005/12/1

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N2 - The current study adapts a novel approach to directly measure the effect of particle adhesion on the bulk powder flow characteristics. This is achieved by modifying the adhesion of spherical glass particles (mean size: 38 μm) through a protocol that involves the deposition of surface silane monolayers on individual glass particles. The increase in particle surface energy has been characterized by particle-particle pull off force measurements using Atomic Force Microscopy. An annular shear cell has been used to measure flow properties and to quantify the effect of surface energy of the silanized glass particles on their bulk cohesion. Computer simulations using the Distinct Element Method (DEM) have also been carried out. The DEM simulations use JKR adhesion model to incorporate the surface energy values of glass beads corresponding to the AFM pull-off force measurements. The Unconfined Yield Stress (UYS) and Flow Factor (ff) obtained by the simulations have been compared with the experiments.

AB - The current study adapts a novel approach to directly measure the effect of particle adhesion on the bulk powder flow characteristics. This is achieved by modifying the adhesion of spherical glass particles (mean size: 38 μm) through a protocol that involves the deposition of surface silane monolayers on individual glass particles. The increase in particle surface energy has been characterized by particle-particle pull off force measurements using Atomic Force Microscopy. An annular shear cell has been used to measure flow properties and to quantify the effect of surface energy of the silanized glass particles on their bulk cohesion. Computer simulations using the Distinct Element Method (DEM) have also been carried out. The DEM simulations use JKR adhesion model to incorporate the surface energy values of glass beads corresponding to the AFM pull-off force measurements. The Unconfined Yield Stress (UYS) and Flow Factor (ff) obtained by the simulations have been compared with the experiments.

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