Ice Engineering--Material Properties of Saline Ice for a Limited Range of Conditions.
Increasing operational use of ice areas in polar regions has intensified the need for improved knowledge, techniques, and procedures for utilization of polar ice in shore-based activities and floating platforms. A linear equation relating flexural strength (rupture modulus) with brine volume was dev...
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ftdtic:AD0887840 2023-05-15T16:37:12+02:00 Ice Engineering--Material Properties of Saline Ice for a Limited Range of Conditions. Dykins,J. E. NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF 1971-04 text/html http://www.dtic.mil/docs/citations/AD0887840 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0887840 en eng http://www.dtic.mil/docs/citations/AD0887840 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost (*SEA ICE MECHANICAL PROPERTIES) FLEXURAL STRENGTH SALINITY TEMPERATURE CREEP SHEAR STRESSES DEFLECTION ELASTIC PROPERTIES STRAIN(MECHANICS) POLAR REGIONS BEAMS(STRUCTURAL) FLOATING BODIES STABILIZED PLATFORMS PETROGRAPHY THICKNESS TABLES(DATA) ICE ENGINEERING Text 1971 ftdtic 2016-02-19T07:09:44Z Increasing operational use of ice areas in polar regions has intensified the need for improved knowledge, techniques, and procedures for utilization of polar ice in shore-based activities and floating platforms. A linear equation relating flexural strength (rupture modulus) with brine volume was developed for temperature range -2C to -10C for normal seawater ice. The analysis included data from large field-tested beams and small laboratory-tested beams. The stress-strain relationship for the small laboratory beams tested for temperature range -4C to -10C under elastic loading condition was found to be linear, while the elastic modulus was observed to behave as a nonlinear function of temperature. Limited sampling indicates secondary creep is related to stress and can be expressed as a material constant multiplied by stress to an exponential power; both stress and creep are temperature sensitive. In contrast to the results of previous studies, the basal plane of the polycrystalline specimens of saline ice was not observed to be the weakest shear plane. (Author) Text Ice permafrost Sea ice Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
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ftdtic |
language |
English |
topic |
Snow Ice and Permafrost (*SEA ICE MECHANICAL PROPERTIES) FLEXURAL STRENGTH SALINITY TEMPERATURE CREEP SHEAR STRESSES DEFLECTION ELASTIC PROPERTIES STRAIN(MECHANICS) POLAR REGIONS BEAMS(STRUCTURAL) FLOATING BODIES STABILIZED PLATFORMS PETROGRAPHY THICKNESS TABLES(DATA) ICE ENGINEERING |
spellingShingle |
Snow Ice and Permafrost (*SEA ICE MECHANICAL PROPERTIES) FLEXURAL STRENGTH SALINITY TEMPERATURE CREEP SHEAR STRESSES DEFLECTION ELASTIC PROPERTIES STRAIN(MECHANICS) POLAR REGIONS BEAMS(STRUCTURAL) FLOATING BODIES STABILIZED PLATFORMS PETROGRAPHY THICKNESS TABLES(DATA) ICE ENGINEERING Dykins,J. E. Ice Engineering--Material Properties of Saline Ice for a Limited Range of Conditions. |
topic_facet |
Snow Ice and Permafrost (*SEA ICE MECHANICAL PROPERTIES) FLEXURAL STRENGTH SALINITY TEMPERATURE CREEP SHEAR STRESSES DEFLECTION ELASTIC PROPERTIES STRAIN(MECHANICS) POLAR REGIONS BEAMS(STRUCTURAL) FLOATING BODIES STABILIZED PLATFORMS PETROGRAPHY THICKNESS TABLES(DATA) ICE ENGINEERING |
description |
Increasing operational use of ice areas in polar regions has intensified the need for improved knowledge, techniques, and procedures for utilization of polar ice in shore-based activities and floating platforms. A linear equation relating flexural strength (rupture modulus) with brine volume was developed for temperature range -2C to -10C for normal seawater ice. The analysis included data from large field-tested beams and small laboratory-tested beams. The stress-strain relationship for the small laboratory beams tested for temperature range -4C to -10C under elastic loading condition was found to be linear, while the elastic modulus was observed to behave as a nonlinear function of temperature. Limited sampling indicates secondary creep is related to stress and can be expressed as a material constant multiplied by stress to an exponential power; both stress and creep are temperature sensitive. In contrast to the results of previous studies, the basal plane of the polycrystalline specimens of saline ice was not observed to be the weakest shear plane. (Author) |
author2 |
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF |
format |
Text |
author |
Dykins,J. E. |
author_facet |
Dykins,J. E. |
author_sort |
Dykins,J. E. |
title |
Ice Engineering--Material Properties of Saline Ice for a Limited Range of Conditions. |
title_short |
Ice Engineering--Material Properties of Saline Ice for a Limited Range of Conditions. |
title_full |
Ice Engineering--Material Properties of Saline Ice for a Limited Range of Conditions. |
title_fullStr |
Ice Engineering--Material Properties of Saline Ice for a Limited Range of Conditions. |
title_full_unstemmed |
Ice Engineering--Material Properties of Saline Ice for a Limited Range of Conditions. |
title_sort |
ice engineering--material properties of saline ice for a limited range of conditions. |
publishDate |
1971 |
url |
http://www.dtic.mil/docs/citations/AD0887840 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0887840 |
genre |
Ice permafrost Sea ice |
genre_facet |
Ice permafrost Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0887840 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766027497607004160 |