Size And Rate Effects on the Fracture of Sea Ice.
This report contains the details of the experimental study as well as the theory applied to study the rate and size effect on the fracture of sea ice. To study the fracture of ice, experiments were carried out on a semi-circular bend fracture geometry. The test program formed a lab scale study to co...
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ftdtic:ADA321958 2023-05-15T15:06:21+02:00 Size And Rate Effects on the Fracture of Sea Ice. Dempsey, John P. CLARKSON UNIV POTSDAM NY 1996-05 text/html http://www.dtic.mil/docs/citations/ADA321958 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA321958 en eng http://www.dtic.mil/docs/citations/ADA321958 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost *FRACTURE(MECHANICS) *SEA ICE STRESS STRAIN RELATIONS LOAD DISTRIBUTION TENSILE STRENGTH MICROSTRUCTURE STRESS ANALYSIS DEFORMATION VISCOELASTICITY ICE MECHANICS CRACK PROPAGATION SALINITY AXIAL LOADS POLYCRYSTALLINE CREEP STRENGTH Text 1996 ftdtic 2016-02-19T19:40:22Z This report contains the details of the experimental study as well as the theory applied to study the rate and size effect on the fracture of sea ice. To study the fracture of ice, experiments were carried out on a semi-circular bend fracture geometry. The test program formed a lab scale study to complement the in-situ large-scale sea ice fracture tests. The ice used was shipped back in the form of cores from the arctic tests. Two directions of fracture, parallel to the c-axis (optical axis) and perpendicular to the c-axis are studied. To examine the rate effect, a Reversed Direct Stress (RDS) device was modified to suit rectangular shaped test specimens. The details of modifications are given. Ice samples were subjected to creep-recovery loading and allowed to recover. The resultant time dependent deformations were analyzed using nonlinear viscoelastic theory. Experimental results as well as the details of the nonlinear viscoelastic models are given. Text Arctic Ice permafrost Sea ice Defense Technical Information Center: DTIC Technical Reports database Arctic |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost *FRACTURE(MECHANICS) *SEA ICE STRESS STRAIN RELATIONS LOAD DISTRIBUTION TENSILE STRENGTH MICROSTRUCTURE STRESS ANALYSIS DEFORMATION VISCOELASTICITY ICE MECHANICS CRACK PROPAGATION SALINITY AXIAL LOADS POLYCRYSTALLINE CREEP STRENGTH |
spellingShingle |
Snow Ice and Permafrost *FRACTURE(MECHANICS) *SEA ICE STRESS STRAIN RELATIONS LOAD DISTRIBUTION TENSILE STRENGTH MICROSTRUCTURE STRESS ANALYSIS DEFORMATION VISCOELASTICITY ICE MECHANICS CRACK PROPAGATION SALINITY AXIAL LOADS POLYCRYSTALLINE CREEP STRENGTH Dempsey, John P. Size And Rate Effects on the Fracture of Sea Ice. |
topic_facet |
Snow Ice and Permafrost *FRACTURE(MECHANICS) *SEA ICE STRESS STRAIN RELATIONS LOAD DISTRIBUTION TENSILE STRENGTH MICROSTRUCTURE STRESS ANALYSIS DEFORMATION VISCOELASTICITY ICE MECHANICS CRACK PROPAGATION SALINITY AXIAL LOADS POLYCRYSTALLINE CREEP STRENGTH |
description |
This report contains the details of the experimental study as well as the theory applied to study the rate and size effect on the fracture of sea ice. To study the fracture of ice, experiments were carried out on a semi-circular bend fracture geometry. The test program formed a lab scale study to complement the in-situ large-scale sea ice fracture tests. The ice used was shipped back in the form of cores from the arctic tests. Two directions of fracture, parallel to the c-axis (optical axis) and perpendicular to the c-axis are studied. To examine the rate effect, a Reversed Direct Stress (RDS) device was modified to suit rectangular shaped test specimens. The details of modifications are given. Ice samples were subjected to creep-recovery loading and allowed to recover. The resultant time dependent deformations were analyzed using nonlinear viscoelastic theory. Experimental results as well as the details of the nonlinear viscoelastic models are given. |
author2 |
CLARKSON UNIV POTSDAM NY |
format |
Text |
author |
Dempsey, John P. |
author_facet |
Dempsey, John P. |
author_sort |
Dempsey, John P. |
title |
Size And Rate Effects on the Fracture of Sea Ice. |
title_short |
Size And Rate Effects on the Fracture of Sea Ice. |
title_full |
Size And Rate Effects on the Fracture of Sea Ice. |
title_fullStr |
Size And Rate Effects on the Fracture of Sea Ice. |
title_full_unstemmed |
Size And Rate Effects on the Fracture of Sea Ice. |
title_sort |
size and rate effects on the fracture of sea ice. |
publishDate |
1996 |
url |
http://www.dtic.mil/docs/citations/ADA321958 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA321958 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Sea ice |
genre_facet |
Arctic Ice permafrost Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA321958 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766337983819022336 |