Modelling & Observation of Crack Nucleation in Ice Due to Elastic & Plastic Anisotropy.

The primary result of this project are a clear understanding of the processes which initial cracks in columnar ice under typical conditions. The primary material of study was laboratory-grown freshwater ice, in which the crystals grew as long columns with diameters in the range of a few millimeters....

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Bibliographic Details
Main Author: Frost, Harold J.
Other Authors: DARTMOUTH COLL HANOVER NH
Format: Text
Language:English
Published: 1996
Subjects:
Snow
Ice and Permafrost
*ICE MECHANICS
*CRACK PROPAGATION
SINGLE CRYSTALS
TOUGHNESS
NUCLEATION
ICE FORMATION
FRACTURE(MECHANICS)
FRESH WATER
BRITTLENESS
ANISOTROPY
CRYSTAL GROWTH
POLYCRYSTALLINE
STRESS CONCENTRATION
FRACTURE TOUGHNESS
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA317344
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA317344
Description
Summary:The primary result of this project are a clear understanding of the processes which initial cracks in columnar ice under typical conditions. The primary material of study was laboratory-grown freshwater ice, in which the crystals grew as long columns with diameters in the range of a few millimeters. For some fracture toughness measurements we used large single crystals of freshwater ice. Some related work has also been done on laboratory-grown columnar saline ice.

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