Accession Number : ADA317344
Title : Modelling & Observation of Crack Nucleation in Ice Due to Elastic & Plastic Anisotropy.
Descriptive Note : Final rept. 1 Jun 92-31 Mar 96,
Corporate Author : DARTMOUTH COLL HANOVER NH
Personal Author(s) : Frost, Harold J.
PDF Url : ADA317344
Report Date : JUL 1996
Pagination or Media Count : 11
Abstract : 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.
Descriptors : *ICE MECHANICS, *CRACK PROPAGATION, SINGLE CRYSTALS, TOUGHNESS, NUCLEATION, ICE FORMATION, FRACTURE(MECHANICS), FRESH WATER, BRITTLENESS, ANISOTROPY, CRYSTAL GROWTH, POLYCRYSTALLINE, STRESS CONCENTRATION.
Subject Categories : Snow, Ice and Permafrost
Distribution Statement : APPROVED FOR PUBLIC RELEASE