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The Effect of Temperature on the Ductile-to-Brittle Transition in Columnar Ice

Author(s): S. Qi; E. M. Schulson

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Abstract: Experiments on S2 ice (fresh-water ice and salt-water ice) under uniaxial compression were performed at strain rates between 10-6/s to 10-1/s at temperatures from -3 to -40°C. The results showed that over this range the ductile-to-brittle transition strain rate for both fresh-water ice and salt-water ice decreases by almost an order of magnitude with decreasing temperature. The transition strain rate in salt-water ice is one order of magnitude higher than that in fresh-water ice. The apparent activation energy increases with increasing temperature, from 73.5 kJ/mole at -40 °C to 78. S kJ/mole at -3 °C in the fresh-water ice, and from 60.9 kJ/mole at -40 °C to 63.4 kJ/mole at -3°C in the salt-water ice.

DOI:

Year: 1998

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