Mechanical Properties of Multi-Year Sea Ice. Phase 2. Test Results

• Main Authors: Cox, Gordon F., Richter-Menge, Jacqueline A., Weeks, Wilford F., Bosworth, Hazen, Perron, Nancy
• Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
• Format: Text
• Language: English
• Published: 1985
• Subjects: Snow; Ice and Permafrost; *SEA ICE; MECHANICAL PROPERTIES; STRAIN(MECHANICS); POROSITY; STRAIN RATE; ICE; SAMPLING; PRESSURE; YIELD; COMPRESSIVE PROPERTIES; RIDGES; BEAUFORT SEA; *MULTIYEAR SEA ICE; Beaufort Sea; Ice; permafrost; Sea ice
• Online Access: http://www.dtic.mil/docs/citations/ADA166333; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA166333

This report presents the results of the second phase of a test program designed to obtain a comprehensive understanding of the mechanical properties of multi-year sea ice from the Alaskan Beaufort Sea. In Phase 2, 62 constant-strain-rate uniaxial compression tests were performed on horizontal and vertical ice samples from multi-year pressure ridges to examine the effect of sample orientation on ice strength. Also conducted were 36 constant-strain-rate tension tests, 55 conventional triaxial tests and 35 constant-load compression tests on multi-year pressure ridge samples to provide data for developing ice yield criteria and constitutive laws. Data are presented on the strength, failure strain and modulus of multi-year sea ice under different loading conditions. The effects of ice temperature, porosity, structure, strain rate, confining pressure and sample orientation on the mechanical properties of multi-year sea ice are examined. See also Phase 1, ADA144132.