Ice triaxial deformation and fracture
An experimental investigation into the mechanical behaviour of polycrystalline ice in triaxial compression has been conducted using conditions generally favourable to brittle fracture and microcracking. Under triaxial stresses at high strain rate, ice failure occurs by abrupt shear fracturing, gener...
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1994
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:8895605 2023-05-15T16:57:25+02:00 Ice triaxial deformation and fracture Rist, M. A. Murrell, S. A. F. 1994 text https://nrc-publications.canada.ca/eng/view/object/?id=ecbb99a7-ff9d-4868-9f7b-b5cd0d396abd https://nrc-publications.canada.ca/fra/voir/objet/?id=ecbb99a7-ff9d-4868-9f7b-b5cd0d396abd unknown Journal of Glaciology, Volume: 40, Issue: 135, Publication date: 1994, Pages: 305–318 report_number:IR-1994-27 article 1994 ftnrccanada 2021-09-01T06:29:29Z An experimental investigation into the mechanical behaviour of polycrystalline ice in triaxial compression has been conducted using conditions generally favourable to brittle fracture and microcracking. Under triaxial stresses at high strain rate, ice failure occurs by abrupt shear fracturing, generally inclined at about 45° to the maximum principal stress. At -20°C, such failure is suppressed by the imposition of a small confining pressure, allowing a transition to ductile-type flow accompanied by distributed microcracking, but at -40°C shear fracture persists under confinement of up to at least 50 mPa. For low confining pressures (<10 MPa), brittle strength is strongly pressure-dependent; above this it is pressure-independent. Evidence is presented that suggests this may reflect a change from a fracture process influenced by friction to fracture initiated by localized yielding. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Journal of Glaciology National Research Council Canada: NRC Publications Archive |
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Open Polar |
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National Research Council Canada: NRC Publications Archive |
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ftnrccanada |
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unknown |
description |
An experimental investigation into the mechanical behaviour of polycrystalline ice in triaxial compression has been conducted using conditions generally favourable to brittle fracture and microcracking. Under triaxial stresses at high strain rate, ice failure occurs by abrupt shear fracturing, generally inclined at about 45° to the maximum principal stress. At -20°C, such failure is suppressed by the imposition of a small confining pressure, allowing a transition to ductile-type flow accompanied by distributed microcracking, but at -40°C shear fracture persists under confinement of up to at least 50 mPa. For low confining pressures (<10 MPa), brittle strength is strongly pressure-dependent; above this it is pressure-independent. Evidence is presented that suggests this may reflect a change from a fracture process influenced by friction to fracture initiated by localized yielding. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Rist, M. A. Murrell, S. A. F. |
spellingShingle |
Rist, M. A. Murrell, S. A. F. Ice triaxial deformation and fracture |
author_facet |
Rist, M. A. Murrell, S. A. F. |
author_sort |
Rist, M. A. |
title |
Ice triaxial deformation and fracture |
title_short |
Ice triaxial deformation and fracture |
title_full |
Ice triaxial deformation and fracture |
title_fullStr |
Ice triaxial deformation and fracture |
title_full_unstemmed |
Ice triaxial deformation and fracture |
title_sort |
ice triaxial deformation and fracture |
publishDate |
1994 |
url |
https://nrc-publications.canada.ca/eng/view/object/?id=ecbb99a7-ff9d-4868-9f7b-b5cd0d396abd https://nrc-publications.canada.ca/fra/voir/objet/?id=ecbb99a7-ff9d-4868-9f7b-b5cd0d396abd |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_relation |
Journal of Glaciology, Volume: 40, Issue: 135, Publication date: 1994, Pages: 305–318 report_number:IR-1994-27 |
_version_ |
1766048961781563392 |