Strengthening ice through cyclic loading

ABSTRACT New experiments reveal that the flexural strength of fresh water, columnar-grained ice loaded normal to the columns may be increased by about a factor of two upon reversed cyclic loading at a frequency of ~0.1 Hz at stress amplitudes of 1.3–2.6 MPa. The effect is explained in terms of a red...

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Bibliographic Details
Published in:Journal of Glaciology
Main Authors: ILIESCU, DANIEL, MURDZA, ANDRII, SCHULSON, ERLAND M., RENSHAW, CARL E.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2017
Subjects:
Journal of Glaciology
Online Access:http://dx.doi.org/10.1017/jog.2017.32
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143017000326
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Summary:ABSTRACT New experiments reveal that the flexural strength of fresh water, columnar-grained ice loaded normal to the columns may be increased by about a factor of two upon reversed cyclic loading at a frequency of ~0.1 Hz at stress amplitudes of 1.3–2.6 MPa. The effect is explained in terms of a reduction in deformation-induced stress concentration through the activation of grain boundary sliding, which is evident through boundary decohesion.

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