Internal Friction of Single-Crystal Ice.

The internal friction of single-crystal ice has been attributed to reorientation of the water molecule under periodic stress. However, the theory for damped dislocations, which offers another mechanism for the internal friction of ice, has not been investigated. The effects of scratching the surface...

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Bibliographic Details
Main Authors: VanDevender,J. P., Itagaki,K.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1973
Subjects:
Snow
Ice and Permafrost
Solid State Physics
(*ICE
*INTERNAL FRICTION)
SINGLE CRYSTALS
DISLOCATIONS
MECHANICAL WAVES
DAMPING
COMPUTER PROGRAMS
X RAY IRRADIATION
PLASTIC DEFORMATION
STRESS WAVES
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0759930
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0759930
Description
Summary:The internal friction of single-crystal ice has been attributed to reorientation of the water molecule under periodic stress. However, the theory for damped dislocations, which offers another mechanism for the internal friction of ice, has not been investigated. The effects of scratching the surface of ice samples and X-irradiating andplastically deforming them were evaluated. The effects observed on the internal friction of pure, single-crystal ice, in the flexure mode of oscillation between 400 and 1400 Hz, supported the existence of a dislocation-controlled mechanism, with the drag produced by the interaction of the dislocation with the protons in the crystal. (Author Modified Abstract)

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