Experiments on anisotropic and rate sensitive strain ratio and modulus of columnar-grained ice
Anisotropic and rate sensitive characteristics of the ratio of lateral strain to axial strain in addition to the rate sensitive effective modulus for columnar-grained freshwater ice and sea ice from the Arctic, have been investigated. Tests were carried out at -20 degrees C, for conditions of no mic...
Published in: | Journal of Offshore Mechanics and Arctic Engineering |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
ASME
1989
|
Subjects: | |
Online Access: | https://doi.org/10.1115/1.3257107 https://nrc-publications.canada.ca/eng/view/ft/?id=f8825293-95ad-4356-ba01-c2bcbd21e49c https://nrc-publications.canada.ca/eng/view/object/?id=f8825293-95ad-4356-ba01-c2bcbd21e49c https://nrc-publications.canada.ca/fra/voir/objet/?id=f8825293-95ad-4356-ba01-c2bcbd21e49c |
id |
ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20331626 |
---|---|
record_format |
openpolar |
spelling |
ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20331626 2024-01-07T09:40:24+01:00 Experiments on anisotropic and rate sensitive strain ratio and modulus of columnar-grained ice Sinha, N. K. 1989 text https://doi.org/10.1115/1.3257107 https://nrc-publications.canada.ca/eng/view/ft/?id=f8825293-95ad-4356-ba01-c2bcbd21e49c https://nrc-publications.canada.ca/eng/view/object/?id=f8825293-95ad-4356-ba01-c2bcbd21e49c https://nrc-publications.canada.ca/fra/voir/objet/?id=f8825293-95ad-4356-ba01-c2bcbd21e49c eng eng ASME Journal of Offshore Mechanics and Arctic Engineering, Volume: 111, Issue: 4, Publication date: 1989, Pages: 354–360 doi:10.1115/1.3257107 report_number:IRC-P-1515 ice glace (gel) strain déformation test procedures méthode d'essai lateral axial strain freshwater sea ice uniaxial loads microcracking stress strain rate range closed-loop controlled test system foil gauges displacement gauge article 1989 ftnrccanada https://doi.org/10.1115/1.3257107 2023-12-10T00:02:20Z Anisotropic and rate sensitive characteristics of the ratio of lateral strain to axial strain in addition to the rate sensitive effective modulus for columnar-grained freshwater ice and sea ice from the Arctic, have been investigated. Tests were carried out at -20 degrees C, for conditions of no microcracking under uniaxial loads (normal to the length of the grains) in the stress rate range of 1 x 10-3 MN.m-2s- 1 to 1 x 102 MN.m-2 s-1 or an equivalent strain rate range of 1 x 10-7 s-1 to 1 x 10-2 s-1. With increase in stress rate, the ratio increased from about 0.2 to 0.3 in the plane parallel to the columns whereas it decreased from about 0.65 to 0.3 in the plane normal to the columns. A closed-loop controlled test system in association with foil gauges, mounted directly on the specimen, was used. A clipon displacement gauge was used to evaluate the accuracy of the foil gauges. On a étudié les caractéristiques d'anisotropie et de sensibilité au taux du rapport de la déformation latérale à la déformation axiale, ainsi que le module effectif de sensibilité au taux pour de la glace d'eau douce et de la glace de mer à grains prismatiques de l'Arctique. Des essais ont été réalisés à -20 degrees C dans des conditions de non-microfissuration sous des charges uniaxiales (perpendiculaires à la longueur des grains) dans la plage de taux de contrainte de 1 x 10-3 MN.m-2s-1 à 1 x 102 MN.m-2s- 1, soit une variation équivalente du taux de déformation de 1 x 10-7s-1 à 1 x 10-2s-1. Dans le cas d'augmentation du taux de contrainte, le rapport est passé d'environ 0,2 à 0,3 dans le plan parallèle aux prismes, tandis qu'il est passé d'environ 0,65 à 0,3 dans le plan normal. On a utilisé un appareil d'essai fonctionnant en boucle fermée associé à des jauges à feuille mince montées directement sur l'éprouvette. Pour évaluer la justesse des jauges à feuille mince, on s'est servi d'une jauge de déplacement clipsable. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Arctic Arctic Sea ice National Research Council Canada: NRC Publications Archive Arctic Journal of Offshore Mechanics and Arctic Engineering 111 4 354 360 |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
topic |
ice glace (gel) strain déformation test procedures méthode d'essai lateral axial strain freshwater sea ice uniaxial loads microcracking stress strain rate range closed-loop controlled test system foil gauges displacement gauge |
spellingShingle |
ice glace (gel) strain déformation test procedures méthode d'essai lateral axial strain freshwater sea ice uniaxial loads microcracking stress strain rate range closed-loop controlled test system foil gauges displacement gauge Sinha, N. K. Experiments on anisotropic and rate sensitive strain ratio and modulus of columnar-grained ice |
topic_facet |
ice glace (gel) strain déformation test procedures méthode d'essai lateral axial strain freshwater sea ice uniaxial loads microcracking stress strain rate range closed-loop controlled test system foil gauges displacement gauge |
description |
Anisotropic and rate sensitive characteristics of the ratio of lateral strain to axial strain in addition to the rate sensitive effective modulus for columnar-grained freshwater ice and sea ice from the Arctic, have been investigated. Tests were carried out at -20 degrees C, for conditions of no microcracking under uniaxial loads (normal to the length of the grains) in the stress rate range of 1 x 10-3 MN.m-2s- 1 to 1 x 102 MN.m-2 s-1 or an equivalent strain rate range of 1 x 10-7 s-1 to 1 x 10-2 s-1. With increase in stress rate, the ratio increased from about 0.2 to 0.3 in the plane parallel to the columns whereas it decreased from about 0.65 to 0.3 in the plane normal to the columns. A closed-loop controlled test system in association with foil gauges, mounted directly on the specimen, was used. A clipon displacement gauge was used to evaluate the accuracy of the foil gauges. On a étudié les caractéristiques d'anisotropie et de sensibilité au taux du rapport de la déformation latérale à la déformation axiale, ainsi que le module effectif de sensibilité au taux pour de la glace d'eau douce et de la glace de mer à grains prismatiques de l'Arctique. Des essais ont été réalisés à -20 degrees C dans des conditions de non-microfissuration sous des charges uniaxiales (perpendiculaires à la longueur des grains) dans la plage de taux de contrainte de 1 x 10-3 MN.m-2s-1 à 1 x 102 MN.m-2s- 1, soit une variation équivalente du taux de déformation de 1 x 10-7s-1 à 1 x 10-2s-1. Dans le cas d'augmentation du taux de contrainte, le rapport est passé d'environ 0,2 à 0,3 dans le plan parallèle aux prismes, tandis qu'il est passé d'environ 0,65 à 0,3 dans le plan normal. On a utilisé un appareil d'essai fonctionnant en boucle fermée associé à des jauges à feuille mince montées directement sur l'éprouvette. Pour évaluer la justesse des jauges à feuille mince, on s'est servi d'une jauge de déplacement clipsable. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Sinha, N. K. |
author_facet |
Sinha, N. K. |
author_sort |
Sinha, N. K. |
title |
Experiments on anisotropic and rate sensitive strain ratio and modulus of columnar-grained ice |
title_short |
Experiments on anisotropic and rate sensitive strain ratio and modulus of columnar-grained ice |
title_full |
Experiments on anisotropic and rate sensitive strain ratio and modulus of columnar-grained ice |
title_fullStr |
Experiments on anisotropic and rate sensitive strain ratio and modulus of columnar-grained ice |
title_full_unstemmed |
Experiments on anisotropic and rate sensitive strain ratio and modulus of columnar-grained ice |
title_sort |
experiments on anisotropic and rate sensitive strain ratio and modulus of columnar-grained ice |
publisher |
ASME |
publishDate |
1989 |
url |
https://doi.org/10.1115/1.3257107 https://nrc-publications.canada.ca/eng/view/ft/?id=f8825293-95ad-4356-ba01-c2bcbd21e49c https://nrc-publications.canada.ca/eng/view/object/?id=f8825293-95ad-4356-ba01-c2bcbd21e49c https://nrc-publications.canada.ca/fra/voir/objet/?id=f8825293-95ad-4356-ba01-c2bcbd21e49c |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Sea ice |
genre_facet |
Arctic Arctic Sea ice |
op_relation |
Journal of Offshore Mechanics and Arctic Engineering, Volume: 111, Issue: 4, Publication date: 1989, Pages: 354–360 doi:10.1115/1.3257107 report_number:IRC-P-1515 |
op_doi |
https://doi.org/10.1115/1.3257107 |
container_title |
Journal of Offshore Mechanics and Arctic Engineering |
container_volume |
111 |
container_issue |
4 |
container_start_page |
354 |
op_container_end_page |
360 |
_version_ |
1787421316877385728 |