Mechanisms of ice softening under high pressure and shear
Under high hydrostatic pressure combined with shear, the structure of polycrystalline ice breaks down into fine-grained material by a process of recrystallization. Accompanying this process is a substantial softening of the material. Measurements of activation energy at low strains prior to the brea...
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Language: | English |
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Lulea University of Technology
2005
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:e5531835-24b5-4198-ae45-b7cf69d76019 2023-05-15T14:21:56+02:00 Mechanisms of ice softening under high pressure and shear Jordaan, Ian Li, Chuanke Barrette, Paul Duval, Paul Meyssonnier, Jacques 2005 text https://nrc-publications.canada.ca/eng/view/author/version/?id=e5531835-24b5-4198-ae45-b7cf69d76019 https://nrc-publications.canada.ca/eng/view/object/?id=e5531835-24b5-4198-ae45-b7cf69d76019 https://nrc-publications.canada.ca/fra/voir/objet/?id=e5531835-24b5-4198-ae45-b7cf69d76019 eng eng Lulea University of Technology Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2005, 18th International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2005, June 26-30, 2005, Potsdam, NY; USA, Volume: 1, Publication date: 2005, Pages: 249–259 article 2005 ftnrccanada 2021-09-01T06:36:40Z Under high hydrostatic pressure combined with shear, the structure of polycrystalline ice breaks down into fine-grained material by a process of recrystallization. Accompanying this process is a substantial softening of the material. Measurements of activation energy at low strains prior to the breakdown of structure, at temperatures of -10 °C, show an increase of activation energy from about 80 kJ mol-1 to about 120 kJ mol -1 as the pressure increases, with values at about 70 MPa similar to those found by other researchers for temperatures between -10 and 0 °C. These results suggest that grain boundary effects might result in the increased strain rates. The various energies that might drive the subsequent recrystallization process have been investigated. The results suggest strongly that elastic strain energy is the driving force in the process. Peer reviewed: Yes NRC publication: No Article in Journal/Newspaper Arctic National Research Council Canada: NRC Publications Archive |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
description |
Under high hydrostatic pressure combined with shear, the structure of polycrystalline ice breaks down into fine-grained material by a process of recrystallization. Accompanying this process is a substantial softening of the material. Measurements of activation energy at low strains prior to the breakdown of structure, at temperatures of -10 °C, show an increase of activation energy from about 80 kJ mol-1 to about 120 kJ mol -1 as the pressure increases, with values at about 70 MPa similar to those found by other researchers for temperatures between -10 and 0 °C. These results suggest that grain boundary effects might result in the increased strain rates. The various energies that might drive the subsequent recrystallization process have been investigated. The results suggest strongly that elastic strain energy is the driving force in the process. Peer reviewed: Yes NRC publication: No |
format |
Article in Journal/Newspaper |
author |
Jordaan, Ian Li, Chuanke Barrette, Paul Duval, Paul Meyssonnier, Jacques |
spellingShingle |
Jordaan, Ian Li, Chuanke Barrette, Paul Duval, Paul Meyssonnier, Jacques Mechanisms of ice softening under high pressure and shear |
author_facet |
Jordaan, Ian Li, Chuanke Barrette, Paul Duval, Paul Meyssonnier, Jacques |
author_sort |
Jordaan, Ian |
title |
Mechanisms of ice softening under high pressure and shear |
title_short |
Mechanisms of ice softening under high pressure and shear |
title_full |
Mechanisms of ice softening under high pressure and shear |
title_fullStr |
Mechanisms of ice softening under high pressure and shear |
title_full_unstemmed |
Mechanisms of ice softening under high pressure and shear |
title_sort |
mechanisms of ice softening under high pressure and shear |
publisher |
Lulea University of Technology |
publishDate |
2005 |
url |
https://nrc-publications.canada.ca/eng/view/author/version/?id=e5531835-24b5-4198-ae45-b7cf69d76019 https://nrc-publications.canada.ca/eng/view/object/?id=e5531835-24b5-4198-ae45-b7cf69d76019 https://nrc-publications.canada.ca/fra/voir/objet/?id=e5531835-24b5-4198-ae45-b7cf69d76019 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2005, 18th International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2005, June 26-30, 2005, Potsdam, NY; USA, Volume: 1, Publication date: 2005, Pages: 249–259 |
_version_ |
1766294629022433280 |