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Field test 1 of compressive strength of first-year sea ice

From National Research Council Canada

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  1. National Research Council of Canada
FormatText, Article
Subjectice; compressive strength; field tests; uniaxial compression; test program report; failure stress; failure time
Abstract
A test program undertaken in April 1981 on the uniaxial compressive strength of freshly recovered first-year columnar-grained sea ice at a portable field laboratory floating on top of the ice cover in Eclipse Sound, Baffin Island, Canadian Arctic, is reported. Using a small battery- operated test machine, both vertical and horizontal samples were tested so that the load could be applied either parallel or perpendicular to the axis of the columns. Rate sensitivity of the observed strength is discussed in terms of measured average strain-rate and average stress-rate to upper yield or failure. Strain and time aspects fo the test results are considered as well. Although vertical samples showed considerably greater strength than horizontal samples, no significant differences were detected in the failure strains. Examination of the interdependence of failure stress and failure time revealed certain anomalies in the results for vertical samples that could be linked to the performance characteristics of the test machine. As such problems could be common to any test system, methods of analysis are proposed for rational examination of the results.
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  • Annals of Glaciology 4: 253–259.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-P-1137
NRC numberNRCC 22678
NRC-IRC-120
NPARC number20386207
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Record identifier179b464b-b663-41d0-a534-f651e6f6c5a6
Record created2012-07-25
Record modified2024-03-22
Date modified: