Analysis of data from indentation tests on freshwater ice

Author	Search for: Chin, S. N.; Search for: Sodhi, D. S.
Format	Text, Article
Conference	12th International Conference on Offshore Mechanics and Arctic Engineering, 20-24 June 1993, Glasgow, Scotland
Abstract	Indentation tests were conducted using a segmented indentor at different indentation velocities against freshwater ice. To determine the nature of ice failure at different rates, the effective pressure was measured on each segment of the indentor. The variation of pressure on each segment of the indentor was simultaneous at low-velocity indentation, whereas it was random during high-velocity indentation. Spectral and correlation plots of the data show that the degree of randomness in the measured pressure signal increased with an increase in indentation velocity. Plots of the mean, the maximum and the standard deviation of the measured pressure ar given with respect to the indentation velocity and the aspect ratio. For brittle ice failure, the actual contact of the ice with the indentor is over many small contiguous zones where brittle flaking originates because of high pressure. The trends of decreasing standard deviation with increasing indentation velocity and increasing aspect ratio are attributed to a decrease in the size and an increase in the number of the failure zones, respectively.
Date published	1993
Peer reviewed	Yes
Identifier	IR-1993-40
NRC number	6345
NPARC number	8895147
Export citation	Export as RIS
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Record identifier	fcbc9221-fe93-4ca5-9de3-4fa5c2cd27d5
Record created	2009-04-22
Record modified	2020-04-24

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