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Article Dans Une Revue Journal of Non-Crystalline Solids Année : 2021

Vacuum crack growth in alkali silicate glasses

Résumé

Crack growth velocity in alkali silicate glasses was measured in vacuum across 10 orders of magnitude with double cantilever beam technique. Measured and literature crack growth data were compared with calculated intrinsic fracture toughness data obtained from Young´s moduli and the theoretical fracture surface energy estimated from chemical bond energies. Data analysis reveals significant deviations from this intrinsic brittle fracture behavior. These deviations do not follow simple compositional trends. Two opposing processes may explain this finding: a decrease in the apparent fracture surface energy due to stress-induced chemical changes at the crack tip and its increase due to energy dissipation during fracture. © 2021 Elsevier B.V.
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Dates et versions

hal-03334308 , version 1 (03-09-2021)

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T. Waurischk, S. Reinsch, Tanguy Rouxel, H. Behrens, J. Deubener, et al.. Vacuum crack growth in alkali silicate glasses. Journal of Non-Crystalline Solids, 2021, 572, pp.121094. ⟨10.1016/j.jnoncrysol.2021.121094⟩. ⟨hal-03334308⟩
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