Creep of Ice Containing Dispersed Fine Sand
Abstract Cylindrical samples of ice with 0.0 to 0.35 volume fraction fine sand were tested in unconfined uniaxial compression at stresses between 5.3 and 6.4 bar and at temperatures between −7.4 and −9.4° C. Secondary creep rates were obtained from the slope of the total strain vs. time curve and we...
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Language: | English |
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Cambridge University Press (CUP)
1972
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Online Access: | http://dx.doi.org/10.1017/s0022143000022309 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022309 |
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crcambridgeupr:10.1017/s0022143000022309 2024-09-15T18:15:38+00:00 Creep of Ice Containing Dispersed Fine Sand Hooke, Roger LeB. Dahlin, Brian B. Kauper, Michael T. 1972 http://dx.doi.org/10.1017/s0022143000022309 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022309 en eng Cambridge University Press (CUP) Journal of Glaciology volume 11, issue 63, page 327-336 ISSN 0022-1430 1727-5652 journal-article 1972 crcambridgeupr https://doi.org/10.1017/s0022143000022309 2024-07-24T04:01:31Z Abstract Cylindrical samples of ice with 0.0 to 0.35 volume fraction fine sand were tested in unconfined uniaxial compression at stresses between 5.3 and 6.4 bar and at temperatures between −7.4 and −9.4° C. Secondary creep rates were obtained from the slope of the total strain vs. time curve and were normalized to 5.6 bar and −9.1° C. Creep rates in ice with low sand concentrations were in some cases higher and in other cases lower than in clean ice. However at higher sand concentrations the creep rate decreases exponentially with increasing volume fraction sand. The latter results are in general agreement with theories developed to explain dispersion hardening of metals, and suggest that each sand grain is surrounded by a tangled network of secondary dislocations which impede passage of primary glide dislocations. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 11 63 327 336 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Cylindrical samples of ice with 0.0 to 0.35 volume fraction fine sand were tested in unconfined uniaxial compression at stresses between 5.3 and 6.4 bar and at temperatures between −7.4 and −9.4° C. Secondary creep rates were obtained from the slope of the total strain vs. time curve and were normalized to 5.6 bar and −9.1° C. Creep rates in ice with low sand concentrations were in some cases higher and in other cases lower than in clean ice. However at higher sand concentrations the creep rate decreases exponentially with increasing volume fraction sand. The latter results are in general agreement with theories developed to explain dispersion hardening of metals, and suggest that each sand grain is surrounded by a tangled network of secondary dislocations which impede passage of primary glide dislocations. |
format |
Article in Journal/Newspaper |
author |
Hooke, Roger LeB. Dahlin, Brian B. Kauper, Michael T. |
spellingShingle |
Hooke, Roger LeB. Dahlin, Brian B. Kauper, Michael T. Creep of Ice Containing Dispersed Fine Sand |
author_facet |
Hooke, Roger LeB. Dahlin, Brian B. Kauper, Michael T. |
author_sort |
Hooke, Roger LeB. |
title |
Creep of Ice Containing Dispersed Fine Sand |
title_short |
Creep of Ice Containing Dispersed Fine Sand |
title_full |
Creep of Ice Containing Dispersed Fine Sand |
title_fullStr |
Creep of Ice Containing Dispersed Fine Sand |
title_full_unstemmed |
Creep of Ice Containing Dispersed Fine Sand |
title_sort |
creep of ice containing dispersed fine sand |
publisher |
Cambridge University Press (CUP) |
publishDate |
1972 |
url |
http://dx.doi.org/10.1017/s0022143000022309 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022309 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 11, issue 63, page 327-336 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000022309 |
container_title |
Journal of Glaciology |
container_volume |
11 |
container_issue |
63 |
container_start_page |
327 |
op_container_end_page |
336 |
_version_ |
1810453525946171392 |