Elongation, flatness and compactness indices to characterise particle form

Vasileios Angelidakis*, Sadegh Nadimi, Stefano Utili

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)
77 Downloads (Pure)

Abstract

A century after the first attempts of Wentworth to characterise the shape of cobbles, our understanding of particle morphology is still expanding. A plethora of shape indices has been proposed in the literature to characterise the morphology of individual particles. This study aims to shed light on the merits and limitations of the indices currently used to characterise particle elongation, flatness and compactness, adopting a unified classification framework. Second, new indices are proposed to address the identified shortcomings. Third, a new particle classification system derived from the proposed indices is illustrated. It is shown the new system overcomes the misclassification of a range of particles that are incorrectly classified as bladed in the Zingg system.

Original languageEnglish
Pages (from-to)689-695
Number of pages7
JournalPowder Technology
Volume396
Issue numberPart B
Early online date23 Nov 2021
DOIs
Publication statusPublished - Jan 2022
Externally publishedYes

Bibliographical note

Funding Information:
We acknowledge Newcastle University for the doctoral scholarship of the first author. This work was partially supported by EPSRC grant No. EP/V053655/1 RAILSANDING - Modelling Particle Behaviour in the Rail-Wheel Interface.

Publisher Copyright:
© 2021 The Authors

Keywords

  • Morphology characterisation
  • Non-spherical particles
  • Particle form
  • Particle shape classification

ASJC Scopus subject areas

  • General Chemical Engineering

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