Journal ArticleDOI
Powder flowability and density ratios: the impact of granules packing
TLDR
In this paper, a new flowability criterion based on a novel technique to determine a high packing density was proposed, which is more sensitive to differences in flowability, as quantified by the repose angle.About:
This article is published in Chemical Engineering Science.The article was published on 2003-07-01. It has received 222 citations till now. The article focuses on the topics: Angle of repose.read more
Citations
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Additive manufacturing of metallic components – Process, structure and properties
Tarasankar Debroy,Huiliang Wei,J.S. Zuback,T. Mukherjee,John W. Elmer,John O. Milewski,Allison M. Beese,Alexander E. Wilson-Heid,Amitava De,Wei Zhang +9 more
TL;DR: A review of the emerging research on additive manufacturing of metallic materials is provided in this article, which provides a comprehensive overview of the physical processes and the underlying science of metallurgical structure and properties of the deposited parts.
Journal ArticleDOI
The metallurgy and processing science of metal additive manufacturing
TL;DR: In this article, a review of additive manufacturing (AM) techniques for producing metal parts are explored, with a focus on the science of metal AM: processing defects, heat transfer, solidification, solid-state precipitation, mechanical properties and post-processing metallurgy.
Journal ArticleDOI
Additive manufacturing
TL;DR: Marshall has unique expertise in leveraging new digital tools, 3D printing, and other advanced manufacturing technologies and applying them to propulsion systems design and other aerospace materials to meet NASA mission and industry needs.
Journal ArticleDOI
The relationship between attractive interparticle forces and bulk behaviour in dry and uncharged fine powders
TL;DR: The physics of granular materials in ambient gases is governed by interparticle forces, gas-particle interaction, geometry of particle positions and geometry of particles contacts as mentioned in this paper, which are strongly dependent on the external forces, boundary conditions and on the assembling procedure.
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Dry particle coating for improving the flowability of cohesive powders
TL;DR: In this paper, the magnetic assisted impaction coater (MAIC) and the hybridizer (HB) were used to coat cornstarch powder with different size silica particles and the improvement in flowability was determined from angle of repose measurements using a Hosokawa powder tester.
References
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Journal ArticleDOI
Statistical mechanics of vibration-induced compaction of powders
Sam F. Edwards,D. V. Grinev +1 more
TL;DR: In this article, a theory that describes the density relaxation of loosely packed, cohesionless granular material under mechanical tapping is proposed, where the density of powder initially deposited in a fluffy state evolves under carefully controlled tapping towards a random close packing (RCP) density.
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Physics of granular media
TL;DR: In this article, a packing of elastic spheres is used to simulate granular medium and the onset of fluidization can be determined by molecular dynamics, which is in good agreement with experiments.
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An experimental study of the flow of dry powders over inclined surfaces
D.A. Augenstein,R. Hogg +1 more
TL;DR: In this article, the behavior of dry particulate solids during unconfirmed flow over inclined surfaces has been investigated, and the motion of individual particles is found to depend strongly on the nature of the surface over which they flow.
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Characterisation of the flowability of glass beads by bulk densities ratio
TL;DR: In this article, the flowability of spherical glass beads having mean particle size (dp) ranging 20-170μm were studied and their aerated and tapped bulk densities, angle of slide ( σ s ), and angle of repose ( β ) were measured.
Journal ArticleDOI
A quantitative image analysis method for characterizing mixtures of granular materials
TL;DR: In this paper, image analysis is used to determine the mean, mode, standard deviation, variance, and skewness of local composition for a large number of locations in the mixtures, providing an effective method for performing a detailed quantitative characterization of the mixture structure.