Creep of ice crystals and the measurement of strain: some technical considerations

• Main Authors: Barrette, P. D., Sinha, N. K., Michel, B.
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Society of Mechanical Engineers 1995
• Subjects: Canada; Conseil; Sinha; Arctic
• Online Access: https://nrc-publications.canada.ca/eng/view/object/?id=26b9f095-d646-42c5-ad62-1fab0b4d1bd7; https://nrc-publications.canada.ca/fra/voir/objet/?id=26b9f095-d646-42c5-ad62-1fab0b4d1bd7

Ice crystals reproduced serially from a common seed were machined into rectangular prisms and submitted to a constant load in a levertype compression apparatus. All crystals had their [0001] axis oriented parallel to a prismatic surface and at 45° with the load axis. The temperature at which deformation took place was -2°C and the stress levels were 300, 500, and 700 kPa. Three types of boundary conditions were investigated. A new design for transducer set-up is proposed which takes into account the high plastic anisotropy inherent to ice crystals. It is also suggested that the creep behavior of this material follows a polynomial form rather than power-law, as reported in previous investigations. Mr. Barrette and Mr. Sinha were affiliated with the National Research Council of Canada, Institute for Environmental Research and Technology when they authored this article. M. Barrette et M. Sinha étaitent affiliés avec le Conseil national de recherches du Canada, Institut de recherche environnementale et de technologie lorsqu’ils ont rédigé cet article. Peer reviewed: Yes NRC publication: Yes