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Bibliographic Data
Control Number
311088
Date and Time of Latest Transaction
20150706093837.AM
General Information
150706s |||||||||b ||00|||
Cataloging Source
STII-DOST
Local Call Number
ScienceDirect
Main Entry - Personal Name
Schneider, Markus
Vincent, Gregory
Rogers, Robert J.
Boonsue, Suporn
Spray, John G.
Hogan, James D.
Title Statement
Micro-scale energy dissipation mechanisms during dynamic fracture in natural polyphase ceramic blocks by James D. Hogan and 5 others
Physical Description
pages 931-939 computer file; text; 2,522 kb
Summary, Etc.
The dynamic fracture of natural polyphase ceramic (granite) blocks by high-speed impact at 207 m/s, 420 m/s and 537 m/s has been investigated. An electromagnetic railgun was used as the launch system. Results reveal that the number of fragments increases substantially, and the dominant length scale in their probability distributions decreases, as the impact energy is increased. Micro-scale studies of the fracture surfaces reveals evidence of localized temperatures in excess of 2000 K brought on by frictional melting via fracturing and slip along grain boundaries in orthoclase and plagioclase, and via transgranular fracture (micro-cracking) in quartz. The formation of SiO2- and TiO2-rich spheroids on fracture surfaces indicates that temperatures in excess of 3500 K are reached during fracture
Subject Added Entry - Topical Term
Engineering
Dynamic brittle fragmentation
Railgun impact experiment
Thermal effects in cracking
Location
DOST STII ScienceDirect NONPRINTS NP 14-15407 1 14-15407 Online/Download 2012-01-12
Physical Location
Department of Science and Technology
Science and Technology Information Institute
ScienceDirect
Digital Copy
Not Available
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