ERA

Download the full-sized PDF of Automated Microscopy and Particle Size Analysis of Dynamic Fragmentation of Natural CeramicsDownload the full-sized PDF

Analytics

Share

Permanent link (DOI): https://doi.org/10.7939/R34J0BB3P

Download

Export to: EndNote  |  Zotero  |  Mendeley

Communities

This file is in the following communities:

Mechanical Engineering, Department of

Collections

This file is in the following collections:

Journal Articles (Mechanical Engineering)

Automated Microscopy and Particle Size Analysis of Dynamic Fragmentation of Natural Ceramics Open Access

Descriptions

Author or creator
Hogan, James
Castillo, Josemar
Rawle, Alan
Spray, John
Rogers, Robert J.
Additional contributors
Subject/Keyword
Dynamic fragmentation of natural ceramics
Fractal dimension
Impact testing
Fragment morphology characterization
Railgun
Particle size analysis
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
The dynamic fragmentation of gabbro and granitoid tiles, and coarser and finer grained granitoid blocks have been examined for impact energies of 21–6180 J. Intra-grain fragmentation and inter-granular frictional melting were observed to be common features of the fragmentation process. Consideration of analytical models indicate these temperatures are achievable under these moderate impact conditions. Median values of the number-based sub-10 μm fines, and the number- and volume-based 10 μm to 2 mm fragments were compared with existing theoretical models predicting dominant fragment size. The simplistic model proposed by Grady predicts reasonably well the median fragment size for the volume-based distribution. More complex models are able to predict reasonably well median values for number-based distributions. Ultra-fine production was not predictable. These results suggest there are two distinct fragment-forming mechanisms during impact testing of natural materials. One mechanism is based on energy considerations of the bulk material, which produces the larger fragment sizes, and the other is associated with micro-scale comminution, which produces sub-10 μm fines.
Date created
2013
DOI
doi:10.7939/R34J0BB3P
License information

Rights
Attribution-NonCommerical-NoDerivs 4.0 International
Citation for previous publication
Hogan, James, Castillo, Josemar, Rawle, Alan, Spray, John, & Rogers, Robert J. (2013). Automated Microscopy and Particle Size Analysis of Dynamic Fragmentation of Natural Ceramics. Engineering Fracture Mechanics, 98, 80-91.  http://dx.doi.org/10.1016/j.engfracmech.2012.11.021

Source

Link to related item

File Details

Date Uploaded
Date Modified
Audit Status
Audits have not yet been run on this file.
Characterization
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 13068661
Last modified: 2017:10:11 14:15:25-06:00
Filename: EFM_98_80.pdf
Original checksum: 6241535ef80cb8c1ecbf5cd3c3022835
Well formed: true
Valid: true
Page count: 38
Activity of users you follow
User Activity Date