The effects of anisotropy and microcracks on the fracture toughness (KIC) of freshwater ice
A series of tests have been performed to measure the plane strain critical stress intensity factor (KIC) for columnar freshwater ice as a function of loading rate and loading direction. The results indicate that KIC decreases with increasing loading rate and grain size, and that for comparable condi...
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1986
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Online Access: | https://nrc-publications.canada.ca/eng/view/ft/?id=14f89535-cee2-4702-934c-0c7a873180d7 https://nrc-publications.canada.ca/eng/view/object/?id=14f89535-cee2-4702-934c-0c7a873180d7 https://nrc-publications.canada.ca/fra/voir/objet/?id=14f89535-cee2-4702-934c-0c7a873180d7 |
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20338299 2023-05-15T14:23:00+02:00 The effects of anisotropy and microcracks on the fracture toughness (KIC) of freshwater ice Timco, G. W. Frederking, R. M. W. 1986 text https://nrc-publications.canada.ca/eng/view/ft/?id=14f89535-cee2-4702-934c-0c7a873180d7 https://nrc-publications.canada.ca/eng/view/object/?id=14f89535-cee2-4702-934c-0c7a873180d7 https://nrc-publications.canada.ca/fra/voir/objet/?id=14f89535-cee2-4702-934c-0c7a873180d7 eng eng Proc. 5th Int. Offshore Mechanics and Arctic Engineering Symp. (OMAE): 13 April 1986, Tokyo, Japan, Volume: 4, Publication date: 1986, Pages: 341–348 report_number:IRC-P-1421 ice anistropy fracture strength microfissures crackings (breaking) plane strain critical stress intensity factor columnar freshwater ice loading rate loading direction crack propagation anistropie résistance à la fracture microfissuration fissuration glace (gel) article 1986 ftnrccanada 2021-09-01T06:34:36Z A series of tests have been performed to measure the plane strain critical stress intensity factor (KIC) for columnar freshwater ice as a function of loading rate and loading direction. The results indicate that KIC decreases with increasing loading rate and grain size, and that for comparable conditions, KIC is higher for crack propagation extending along the plane of the ice cover as opposed to crack propagation through the thickness of an ice cover. A separate series of tests indicated that increasing microcrack density resulted in a decrease in the apparent fracture toughness of ice. Les auteurs ont effectué une série d'essais en vue de mesurer le facteur critique d'intensité de contrainte (KIC) en déformation plane de la glace d'eau douce à grains prismatiques, en fonction du taux et de la direction de chargement. Les résultats révèlent que le facteur KIC diminue avec l'accroissement du taux de chargement et de la dimension des grains et que, dans des conditions semblables, KIC est plus élevé dans le cas de la propagation des fissures le long du plan d'une couverture de glace qu' à travers l'épaisseur de la couverture. Une série distincte d'essais a indiqué que l'accroissement de la densité des microfissures donnait lieu à une diminution de la résistance apparente de la glace à la rupture. Peer reviewed: Yes NRC publication: Yes 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 |
topic |
ice anistropy fracture strength microfissures crackings (breaking) plane strain critical stress intensity factor columnar freshwater ice loading rate loading direction crack propagation anistropie résistance à la fracture microfissuration fissuration glace (gel) |
spellingShingle |
ice anistropy fracture strength microfissures crackings (breaking) plane strain critical stress intensity factor columnar freshwater ice loading rate loading direction crack propagation anistropie résistance à la fracture microfissuration fissuration glace (gel) Timco, G. W. Frederking, R. M. W. The effects of anisotropy and microcracks on the fracture toughness (KIC) of freshwater ice |
topic_facet |
ice anistropy fracture strength microfissures crackings (breaking) plane strain critical stress intensity factor columnar freshwater ice loading rate loading direction crack propagation anistropie résistance à la fracture microfissuration fissuration glace (gel) |
description |
A series of tests have been performed to measure the plane strain critical stress intensity factor (KIC) for columnar freshwater ice as a function of loading rate and loading direction. The results indicate that KIC decreases with increasing loading rate and grain size, and that for comparable conditions, KIC is higher for crack propagation extending along the plane of the ice cover as opposed to crack propagation through the thickness of an ice cover. A separate series of tests indicated that increasing microcrack density resulted in a decrease in the apparent fracture toughness of ice. Les auteurs ont effectué une série d'essais en vue de mesurer le facteur critique d'intensité de contrainte (KIC) en déformation plane de la glace d'eau douce à grains prismatiques, en fonction du taux et de la direction de chargement. Les résultats révèlent que le facteur KIC diminue avec l'accroissement du taux de chargement et de la dimension des grains et que, dans des conditions semblables, KIC est plus élevé dans le cas de la propagation des fissures le long du plan d'une couverture de glace qu' à travers l'épaisseur de la couverture. Une série distincte d'essais a indiqué que l'accroissement de la densité des microfissures donnait lieu à une diminution de la résistance apparente de la glace à la rupture. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Timco, G. W. Frederking, R. M. W. |
author_facet |
Timco, G. W. Frederking, R. M. W. |
author_sort |
Timco, G. W. |
title |
The effects of anisotropy and microcracks on the fracture toughness (KIC) of freshwater ice |
title_short |
The effects of anisotropy and microcracks on the fracture toughness (KIC) of freshwater ice |
title_full |
The effects of anisotropy and microcracks on the fracture toughness (KIC) of freshwater ice |
title_fullStr |
The effects of anisotropy and microcracks on the fracture toughness (KIC) of freshwater ice |
title_full_unstemmed |
The effects of anisotropy and microcracks on the fracture toughness (KIC) of freshwater ice |
title_sort |
effects of anisotropy and microcracks on the fracture toughness (kic) of freshwater ice |
publishDate |
1986 |
url |
https://nrc-publications.canada.ca/eng/view/ft/?id=14f89535-cee2-4702-934c-0c7a873180d7 https://nrc-publications.canada.ca/eng/view/object/?id=14f89535-cee2-4702-934c-0c7a873180d7 https://nrc-publications.canada.ca/fra/voir/objet/?id=14f89535-cee2-4702-934c-0c7a873180d7 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Proc. 5th Int. Offshore Mechanics and Arctic Engineering Symp. (OMAE): 13 April 1986, Tokyo, Japan, Volume: 4, Publication date: 1986, Pages: 341–348 report_number:IRC-P-1421 |
_version_ |
1766295489110605824 |