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Brittle failure of columnar S2 ice under triaxial compression.

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Call No.	TA714.5 .G73 1996
Author	Gratz, Eric T.
Title	Brittle failure of columnar S2 ice under triaxial compression.
Date	1996
Abstract	This work describes the effect of triaxial compressive confinement on the strength of columnar S2 ice loaded under conditions leading to brittle failure. Cubes of columnar S2 ice were tested at -10 °C under triaxial (proportional) loading where the ratio of normal stresses, applied perpendicular to and parallel to the long axes of the columnar-shaped grains, was varied in a systematic manner using a true multiaxial loading system. The strain rate in the direction of the greatest stress was 6xl0"3 s*1. Tests conducted using columnar S2 saline ice were used to construct a brittle failure surface which is faceted and reveals four regimes: -I, of lower acrosscolumn confinement where the along-column confinement has no significant effect on the major across-column stress at failure, but where the minor across-column stress raises the strength; -II, of higher across-column confinement where along-column confinement now raises the major across-column stress at failure; -HI, of predominantly a
Description	217 leaves : ill., plates (some col.)
Format	application/pdf
Advisor	Schulson, E. M.
Subject	Ice mechanics. Compressibility. Fracture mechanics. Strains and stresses. Brittleness.
College	Thayer School of Engineering.
Issuing Body	Dartmouth Dissertations are made available through the Dartmouth Digital Library.
Degree	Thesis (Ph.D.)--Dartmouth College.
Copyright	All rights reserved. No part of this book may be reproduced in any form by any electronic or mechanical means without permission in writing from the author.
DOI	http://dx.doi.org/10.1349/ddlp.1506

Title	Page 1
Full Text	BRITUTNLDEE FRA TILRUIARXEI AOLF CCOOLMUPMRENSASRIO SN2 ICE SubmitteAd Ttoh ethsies Faculty in partial fulfillmendte ogfr eteh eo fr equirements for the Doctor of Philosophy by ERIC T. GRATZ ThayeDr aSrctmhoooult ho fC Eonllgeignee ering Hanover, New Hampshire JUNE 1996

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