On terminal crack velocities in glasses

A review of the literature shows that terminal crack velocity, vct, should be correlated with the longitudinal elastic wave velocity, and the structure and density of glasses. Theoretical predictions of vct by the Mott‐Roberts‐Wells model match experimental measurements for some key glasses, includi...

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Bibliographic Details
Published in:International journal of applied glass science 2019-01, Vol.10 (1), p.7-16
Main Author: Quinn, George D.
Format: Article
Language:English
Subjects:
Density
Elastic waves
Fused silica
Literature reviews
Silica glass
Silicon dioxide
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Summary:A review of the literature shows that terminal crack velocity, vct, should be correlated with the longitudinal elastic wave velocity, and the structure and density of glasses. Theoretical predictions of vct by the Mott‐Roberts‐Wells model match experimental measurements for some key glasses, including fused silica and low‐density borosilicates. It is suggested that the slower vct results obtained for many other glasses are due to structural variations that cause crack front perturbations. The conclusions of this paper are most likely applicable to ceramics as well.
ISSN:2041-1286
2041-1294
DOI:10.1111/ijag.13042