Fracture Behavior of Ice in Charpy Impact Testing
Specimens prepared from various types of ice without introducing excessive defects were tested at temperatures ranging from -2 to -190 C. These tests indicated slightly higher Charpy values at lower temperatures and in more highly dispersed material concentrations. Three modes of fracture occurred d...
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ftdtic:ADA089920 2023-05-15T16:37:12+02:00 Fracture Behavior of Ice in Charpy Impact Testing Itagaki,Kazuhiko Sabourin,Richard L COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1980-06 text/html http://www.dtic.mil/docs/citations/ADA089920 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA089920 en eng http://www.dtic.mil/docs/citations/ADA089920 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost Mechanics *ICE *CHARPY IMPACT TESTS SILICON DIOXIDE ORIENTATION(DIRECTION) SINGLE CRYSTALS CRYSTALS IMPURITIES FRACTURE(MECHANICS) ALUMINUM OXIDES AMMONIUM COMPOUNDS COLLOIDS FLUORIDES GLACIERS HYDROGEN FLUORIDE PE61102A AS24C WU002 Text 1980 ftdtic 2016-02-20T18:42:46Z Specimens prepared from various types of ice without introducing excessive defects were tested at temperatures ranging from -2 to -190 C. These tests indicated slightly higher Charpy values at lower temperatures and in more highly dispersed material concentrations. Three modes of fracture occurred during testing. Depending on the temperature and the material composition, either of the first two modes, normal fracture or multiple fracture, will appear and will show a normal frequency distribution of Charpy values in each type of ice. The third mode, fracture from both ends, which frequently occurred in the NH4F doped ice, gave Charpy values two to five times higher than the mean value for normal fracture. It can, therefore, be concluded that certain types of doping can alter the mode of fracture, through which drastic modifications of impact resistance may be possible. (Author) Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Mechanics *ICE *CHARPY IMPACT TESTS SILICON DIOXIDE ORIENTATION(DIRECTION) SINGLE CRYSTALS CRYSTALS IMPURITIES FRACTURE(MECHANICS) ALUMINUM OXIDES AMMONIUM COMPOUNDS COLLOIDS FLUORIDES GLACIERS HYDROGEN FLUORIDE PE61102A AS24C WU002 |
spellingShingle |
Snow Ice and Permafrost Mechanics *ICE *CHARPY IMPACT TESTS SILICON DIOXIDE ORIENTATION(DIRECTION) SINGLE CRYSTALS CRYSTALS IMPURITIES FRACTURE(MECHANICS) ALUMINUM OXIDES AMMONIUM COMPOUNDS COLLOIDS FLUORIDES GLACIERS HYDROGEN FLUORIDE PE61102A AS24C WU002 Itagaki,Kazuhiko Sabourin,Richard L Fracture Behavior of Ice in Charpy Impact Testing |
topic_facet |
Snow Ice and Permafrost Mechanics *ICE *CHARPY IMPACT TESTS SILICON DIOXIDE ORIENTATION(DIRECTION) SINGLE CRYSTALS CRYSTALS IMPURITIES FRACTURE(MECHANICS) ALUMINUM OXIDES AMMONIUM COMPOUNDS COLLOIDS FLUORIDES GLACIERS HYDROGEN FLUORIDE PE61102A AS24C WU002 |
description |
Specimens prepared from various types of ice without introducing excessive defects were tested at temperatures ranging from -2 to -190 C. These tests indicated slightly higher Charpy values at lower temperatures and in more highly dispersed material concentrations. Three modes of fracture occurred during testing. Depending on the temperature and the material composition, either of the first two modes, normal fracture or multiple fracture, will appear and will show a normal frequency distribution of Charpy values in each type of ice. The third mode, fracture from both ends, which frequently occurred in the NH4F doped ice, gave Charpy values two to five times higher than the mean value for normal fracture. It can, therefore, be concluded that certain types of doping can alter the mode of fracture, through which drastic modifications of impact resistance may be possible. (Author) |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Itagaki,Kazuhiko Sabourin,Richard L |
author_facet |
Itagaki,Kazuhiko Sabourin,Richard L |
author_sort |
Itagaki,Kazuhiko |
title |
Fracture Behavior of Ice in Charpy Impact Testing |
title_short |
Fracture Behavior of Ice in Charpy Impact Testing |
title_full |
Fracture Behavior of Ice in Charpy Impact Testing |
title_fullStr |
Fracture Behavior of Ice in Charpy Impact Testing |
title_full_unstemmed |
Fracture Behavior of Ice in Charpy Impact Testing |
title_sort |
fracture behavior of ice in charpy impact testing |
publishDate |
1980 |
url |
http://www.dtic.mil/docs/citations/ADA089920 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA089920 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA089920 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766027494409895936 |