Compression and impact loading experiments of high strength spherical composites

Khanal, Manoj, Schubert, Wolfgang and Tomas, Jürgen (2008) Compression and impact loading experiments of high strength spherical composites. International Journal of Mineral Processing, 86 1-4: 104-113.


Author Khanal, Manoj
Schubert, Wolfgang
Tomas, Jürgen
Title Compression and impact loading experiments of high strength spherical composites
Journal name International Journal of Mineral Processing   Check publisher's open access policy
ISSN 0301-7516
Publication date 2008-03
Sub-type Article (original research)
DOI 10.1016/j.minpro.2007.12.001
Volume 86
Issue 1-4
Start page 104
End page 113
Total pages 10
Place of publication Netherlands
Publisher Elsevier BV
Language eng
Abstract Compression and impact loading experiments have been performed at high velocities to investigate the comminution behaviour of high strength spherical composite particles. Concrete spheres of B35 (compressive strength 35 MPa) strength category have been chosen to represent the composite particles. Breakage mechanism in compression and impact is found to be similar. Crack initiated from the periphery of the contact deformation. Diameter of the contact area depends upon input energy (impact velocity in impacts and loading rate in compressions). Propagation of cracks and formation of meridian and secondary cracks depend upon the input energy. Two cones were observed in compression experiments. It was found that secondary cracks were formed only after forming meridian cracks. Crack initiation and propagation mechanisms under low and high velocity compression loadings were found to be similar.
Keyword Compression
High strength composite particle
Impact
Particle fracture
Sphere
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Julius Kruttschnitt Mineral Research Centre Publications
 
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Created: Thu, 03 Sep 2009, 10:13:40 EST by Mr Andrew Martlew on behalf of Julius Kruttschnitt Mineral Research Centre