Confined strength and deformation of second-year columnar-grained sea ice in Mould Bay

Second-year columnar-grained sea ice with orthotropic texture and fabric has been tested in the field in the High Arctic under confined compressive loading conditions. Both load and confinement were applied in the plane at right angles to the long axis of the columnar grains. Axial and confining loa...

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Main Author: Sinha, N. K.
Format: Article in Journal/Newspaper
Language:English
Published: 1985
Subjects:
Online Access:https://nrc-publications.canada.ca/eng/view/ft/?id=ecb0e0e4-1031-4ae5-9fec-bef73c5fbf7b
https://nrc-publications.canada.ca/eng/view/object/?id=ecb0e0e4-1031-4ae5-9fec-bef73c5fbf7b
https://nrc-publications.canada.ca/fra/voir/objet/?id=ecb0e0e4-1031-4ae5-9fec-bef73c5fbf7b
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author Sinha, N. K.
author_facet Sinha, N. K.
author_sort Sinha, N. K.
collection National Research Council Canada: NRC Publications Archive
description Second-year columnar-grained sea ice with orthotropic texture and fabric has been tested in the field in the High Arctic under confined compressive loading conditions. Both load and confinement were applied in the plane at right angles to the long axis of the columnar grains. Axial and confining loads were measured along with the measurements of axial and lateral strains. The confinement increases the strength considerably but significantly decreases the rate sensitivity of strength. The confined strength of this sea ice has been found to be comparable to the confined strength of laboratory-made fresh water columnar-grained ice tested under ideal conditions. The investigation showed that reliable and fairly sophisticated strength studies can also be carried out in the field. On a procédé dans la région extrême nord de l'Arctique à des essais in situ de compression sous étreinte latérale, sur de la glace de mer à grains columnaires de deuxième année de texture et structure orthotropiques. La charge et la contrainte latérale ont été appliquées dans un plan perpendiculaire au grand axe des grains columnaires. Les charges axiales et de contrainte latérale on été mesurées en même temps que les déformations axiales et latérales. En imposant une étreinte latérale, on augmente considérablement la résistance mécanique, mais on réduit de façon significative le coefficient de sensibilité de la résistance. On a constaté que la résistance de cette glace de mer en présence d'une étreinte latérale était comparable à celle d'échantillons de glace d'eau douce à grains columnaires fabriquée en laboratoire et soumise aux essais dans des conditions idéales. L'étude a démontré qu'il était possible d'effectuer in situ des études fiables et élaborées de la résistance. Peer reviewed: Yes NRC publication: Yes
format Article in Journal/Newspaper
genre Arctic
Arctic
Mould Bay
Northwest Territories
Prince Patrick Island
Sea ice
genre_facet Arctic
Arctic
Mould Bay
Northwest Territories
Prince Patrick Island
Sea ice
geographic Arctic
Northwest Territories
Canada
Mould Bay
Prince Patrick Island
geographic_facet Arctic
Northwest Territories
Canada
Mould Bay
Prince Patrick Island
id ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20375188
institution Open Polar
language English
long_lat ENVELOPE(-119.436,-119.436,76.197,76.197)
ENVELOPE(-119.507,-119.507,76.751,76.751)
op_collection_id ftnrccanada
op_relation Proceedings of the Fourth International Offshore Mechanics and Arctic Engineering Symposium, Fourth International Offshore Mechanics and Arctic Engineering Symposium, ASME, February 10, 1985, Dallas, Texas, Volume: 2, Publication date: 1985-02-10, Pages: 209–219
report_number:DBR-P-1286
publishDate 1985
record_format openpolar
spelling ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20375188 2025-01-16T19:50:54+00:00 Confined strength and deformation of second-year columnar-grained sea ice in Mould Bay Sinha, N. K. 1985-02-10 text https://nrc-publications.canada.ca/eng/view/ft/?id=ecb0e0e4-1031-4ae5-9fec-bef73c5fbf7b https://nrc-publications.canada.ca/eng/view/object/?id=ecb0e0e4-1031-4ae5-9fec-bef73c5fbf7b https://nrc-publications.canada.ca/fra/voir/objet/?id=ecb0e0e4-1031-4ae5-9fec-bef73c5fbf7b eng eng Proceedings of the Fourth International Offshore Mechanics and Arctic Engineering Symposium, Fourth International Offshore Mechanics and Arctic Engineering Symposium, ASME, February 10, 1985, Dallas, Texas, Volume: 2, Publication date: 1985-02-10, Pages: 209–219 report_number:DBR-P-1286 ice loads charge de glace strain déformation loads charge mechanical properties propriété mécanique cold regions zone froide Mould Bay Prince Patrick Island Northwest Territories Canada High Arctic sea ice confined compressive loading article 1985 ftnrccanada 2021-09-01T06:34:00Z Second-year columnar-grained sea ice with orthotropic texture and fabric has been tested in the field in the High Arctic under confined compressive loading conditions. Both load and confinement were applied in the plane at right angles to the long axis of the columnar grains. Axial and confining loads were measured along with the measurements of axial and lateral strains. The confinement increases the strength considerably but significantly decreases the rate sensitivity of strength. The confined strength of this sea ice has been found to be comparable to the confined strength of laboratory-made fresh water columnar-grained ice tested under ideal conditions. The investigation showed that reliable and fairly sophisticated strength studies can also be carried out in the field. On a procédé dans la région extrême nord de l'Arctique à des essais in situ de compression sous étreinte latérale, sur de la glace de mer à grains columnaires de deuxième année de texture et structure orthotropiques. La charge et la contrainte latérale ont été appliquées dans un plan perpendiculaire au grand axe des grains columnaires. Les charges axiales et de contrainte latérale on été mesurées en même temps que les déformations axiales et latérales. En imposant une étreinte latérale, on augmente considérablement la résistance mécanique, mais on réduit de façon significative le coefficient de sensibilité de la résistance. On a constaté que la résistance de cette glace de mer en présence d'une étreinte latérale était comparable à celle d'échantillons de glace d'eau douce à grains columnaires fabriquée en laboratoire et soumise aux essais dans des conditions idéales. L'étude a démontré qu'il était possible d'effectuer in situ des études fiables et élaborées de la résistance. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Arctic Arctic Mould Bay Northwest Territories Prince Patrick Island Sea ice National Research Council Canada: NRC Publications Archive Arctic Northwest Territories Canada Mould Bay ENVELOPE(-119.436,-119.436,76.197,76.197) Prince Patrick Island ENVELOPE(-119.507,-119.507,76.751,76.751)
spellingShingle ice loads
charge de glace
strain
déformation
loads
charge
mechanical properties
propriété mécanique
cold regions
zone froide
Mould Bay
Prince Patrick Island
Northwest Territories
Canada
High Arctic sea ice
confined compressive loading
Sinha, N. K.
Confined strength and deformation of second-year columnar-grained sea ice in Mould Bay
title Confined strength and deformation of second-year columnar-grained sea ice in Mould Bay
title_full Confined strength and deformation of second-year columnar-grained sea ice in Mould Bay
title_fullStr Confined strength and deformation of second-year columnar-grained sea ice in Mould Bay
title_full_unstemmed Confined strength and deformation of second-year columnar-grained sea ice in Mould Bay
title_short Confined strength and deformation of second-year columnar-grained sea ice in Mould Bay
title_sort confined strength and deformation of second-year columnar-grained sea ice in mould bay
topic ice loads
charge de glace
strain
déformation
loads
charge
mechanical properties
propriété mécanique
cold regions
zone froide
Mould Bay
Prince Patrick Island
Northwest Territories
Canada
High Arctic sea ice
confined compressive loading
topic_facet ice loads
charge de glace
strain
déformation
loads
charge
mechanical properties
propriété mécanique
cold regions
zone froide
Mould Bay
Prince Patrick Island
Northwest Territories
Canada
High Arctic sea ice
confined compressive loading
url https://nrc-publications.canada.ca/eng/view/ft/?id=ecb0e0e4-1031-4ae5-9fec-bef73c5fbf7b
https://nrc-publications.canada.ca/eng/view/object/?id=ecb0e0e4-1031-4ae5-9fec-bef73c5fbf7b
https://nrc-publications.canada.ca/fra/voir/objet/?id=ecb0e0e4-1031-4ae5-9fec-bef73c5fbf7b