Language selection

Government of Canada / Gouvernement du Canada

Search

Effects of surface condition on the mechanical properties of ice crystals

From National Research Council Canada

Download
  1. (PDF, 1.8 MiB)
AuthorSearch for:
FormatText, Article
Subjectice; mechanical properties; strain; polishing; propriété mécanique; déformation; polissage
Abstract
A comparative study of the deformation behaviour of mechanically and chemically polished ice crystals is described. For single crystals, mechanical disturbance of the surface layer greatly reduces the maximum stress for basal glide in constant strain rate tests in compression. Single crystals with sub-boundaries do not show any prominent surface effect, but exhibit quite a low maximum stress. The results indicate that mechanically disturbed surface layers and sub-boundaries do not appear to act as strong barriers to dislocation movement in ice crystals, but rather as sources of dislocations. Surface condition does not appear to affect the maximum stress for polycrystals. The influence of strain rate (range 2.1 X 10(-5) to 1.7 X 10(-4)(s-1) and temperature (range -10 to -30 degrees C) upon the maximum stress was also investigated for both single crystals and polycrystals of ice.
Publication date
In
  • British Journal of Applied Physics (J. Phys. D.) 2, no. 11: 1517–1525.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-RP-416
NRC numberNRCC 11035
NRC-IRC-2543
NPARC number20374488
Export citationExport as RIS
Report a correctionReport a correction (opens in a new tab)
Record identifiere1199cce-0779-42ec-8e0b-83e9af085536
Record created2012-07-23
Record modified2020-06-06
Date modified: