Abstract
This paper applies surface parameterization and spherical harmonics analysis to the characterization of particle shapes of Leighton Buzzard sand (LBS) particles and LBS fragments obtained from X-ray microtomography (μCT). The rotation, transition and scale independent spherical coefficients were obtained. The relationship between spherical coefficients and shape parameters of form, roundness and compactness was investigated. The coefficients of degree one determine the principal dimensions of an ellipsoid, which has a similar aspect ratio with the original surface. The coefficients of higher degree characterise more details by increasing the percentage of higher and lower mean curvature on the reconstructed surface. As the spherical degree increases, the reconstructed surface tend to have lower particle roundness, sphericity and convexity, and higher aspect ratio.
| Original language | English |
|---|---|
| Article number | 05002 |
| Pages (from-to) | 1-4 |
| Journal | EPJ Web of Conferences |
| Volume | 140 |
| DOIs | |
| Publication status | Online published - 30 Jun 2017 |
| Event | 8th International Conference on Micromechanics of Granular Media, Powders and Grains 2017 - Montpellier, France Duration: 3 Jul 2017 → 7 Jul 2017 http://pg2017.org/en/program/scientific-program |
Publisher's Copyright Statement
- This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/