The tensile strength of first-year sea ice
Abstract We present the results of tests done to determine the tensile behavior of first-year columnar sea ice over a range of temperatures from −20° to −3°C and strain rates of 10 −5 and 10 −3 s −1 . The temperature of a test specimen was dictated by its in-situ location within the sea-ice sheet; s...
| Published in: | Journal of Glaciology |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Cambridge University Press (CUP)
1993
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1017/s0022143000016506 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000016506 |
| Summary: | Abstract We present the results of tests done to determine the tensile behavior of first-year columnar sea ice over a range of temperatures from −20° to −3°C and strain rates of 10 −5 and 10 −3 s −1 . The temperature of a test specimen was dictated by its in-situ location within the sea-ice sheet; samples located near the top of the sea-ice sheet were tested at the lower temperatures. A tensile load was applied along the cylindrical axes of the test specimens, which were perpendicular to the growth direction of the ice. Results showed that the maximum stress reached during a test was most strongly influenced by temperature, while the failure strain and the modulus were principally affected by the loading rate. A model relating the tensile strength of the ice to its porosity based on temperature-dependent variations in the brine-pocket geometry is evaluated. |
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