ERA

Download the full-sized PDF of Dynamic Fragmentation of Granite for Impact Energies of 6–28 JDownload the full-sized PDF

Analytics

Share

Permanent link (DOI): https://doi.org/10.7939/R30V89X0B

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)

Dynamic Fragmentation of Granite for Impact Energies of 6–28 J Open Access

Descriptions

Author or creator
Hogan, James
Rogers, Robert
Spray, John
Boonsue, Suporn
Additional contributors
Subject/Keyword
Brittle fracture
Drop-tests
Fractals and fragmentation
Scanning electron microscopy of rock
Image analysis of rock fragments
Comminution
Grinding limit
Microscale fracture mechanisms
Dynamic fragmentation of rock
Granite fracture
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
The dynamic fragmentation of granite at impact energies of 6–28 J is examined in this paper. Results indicate that more dense materials, or those with a higher quartz content, produce less fractured mass, and have larger dominant fragment sizes and smaller aspect ratios in their fragment probability distributions. Values of the peaks in fragment size distributions are in agreement with theoretical predictions. Examination of the fracture surfaces reveals information concerning transgranular cracking, crack bifurcation mechanisms and evidence of comminution of sub-micron K-feldspar and plagioclase fragments. Fractal dimensions of the cumulative distribution of fragment sizes were ≃2, indicating that comminution was a dominant fragmentation mechanism in these tests. Peaks in the probability distributions of sub-micron fragments on fracture surfaces reveal a limit of coherent fragments of approximately 0.60 μm for plagioclase and K-feldspar. The smallest fragments found on the surfaces were approximately 0.30 μm and this is considered to be the comminution limit for these materials.
Date created
2012
DOI
doi:10.7939/R30V89X0B
License information

Rights
Attribution-NonCommerical-NoDerivs 4.0 International
Citation for previous publication
Hogan, James, Rogers, Robert, Spray, John, & Boonsue, Suporn. (2012). Dynamic Fragmentation of Granite for Impact Energies of 6–28 J. Engineering Fracture Mechanics Journal, 79, 103-125.  http://dx.doi.org/10.1016/j.engfracmech.2011.10.006

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: 171486
Last modified: 2017:10:11 14:15:33-06:00
Filename: EFM_79_103.pdf
Original checksum: c6c0f180f13d43c2739f893a974ae411
Well formed: true
Valid: true
File title: LowSpeedPaperNOFIGURESv2withreviewEdits.pdf
File author: v3679
Page count: 39
Activity of users you follow
User Activity Date