The Brittle to Ductile Transition in Polycrystalline Ice under Tension.

The tensile strength of equiaxed and randomly oriented ice Ih decreases with increasing grain size and with increasing temperature. The strength of fine-grained aggregates (i.e. of aggregates finer than a critical grain size) is controlled by the stress to propagate cracks. The strength of coarse-gr...

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Bibliographic Details
Main Author: Schulson,Erland M.
Other Authors: THAYER SCHOOL OF ENGINEERING HANOVER N H
Format: Text
Language:English
Published: 1983
Subjects:
Snow
Ice and Permafrost
Crystallography
Mechanics
*CRYSTAL STRUCTURE
*DUCTILE BRITTLE TRANSITION
*ICE
MEASUREMENT
TEMPERATURE
TENSILE STRENGTH
PREPARATION
CRACKING(FRACTURING)
TEST METHODS
GRAIN SIZE
STRAIN(MECHANICS)
CRACK PROPAGATION
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA127701
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA127701
Description
Summary:The tensile strength of equiaxed and randomly oriented ice Ih decreases with increasing grain size and with increasing temperature. The strength of fine-grained aggregates (i.e. of aggregates finer than a critical grain size) is controlled by the stress to propagate cracks. The strength of coarse-grained material is controlled by the stress to nucleate cracks.

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