Electrical conductivity of a metal powder struck by a spark

Document Type

Article

Publication Date

2-1-2012

Abstract

Equivalent resistance of a polydisperse powder layer struck by an electric spark is evaluated. Particles were computationally created and mixed using discrete element method; the mixing protocol homogenized particle size distribution within the sample. The conductivity was determined from the equivalent resistance network for the simulated powder bed. A plasma streamer attached to a particle on top of the sample. For each particle contact, an electrical breakdown was assumed; each individual contact resistance was calculated considering its geometry and plasma resistivity. Results of calculations compare well with the available experimental data. © 2011 Elsevier B.V.

Identifier

84855582242 (Scopus)

Publication Title

Journal of Electrostatics

External Full Text Location

https://doi.org/10.1016/j.elstat.2011.12.004

ISSN

03043886

First Page

157

Last Page

165

Issue

1

Volume

70

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