Details
| Original language | English |
|---|---|
| Article number | 121094 |
| Journal | Journal of non-crystalline solids |
| Volume | 572 |
| Early online date | 21 Aug 2021 |
| Publication status | Published - 15 Nov 2021 |
Abstract
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.
Keywords
- Brittle fracture, Calculated intrinsic fracture toughness, Crack growth, Silicate glass
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
- Ceramics and Composites
- Physics and Astronomy(all)
- Condensed Matter Physics
- Materials Science(all)
- Materials Chemistry
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In: Journal of non-crystalline solids, Vol. 572, 121094, 15.11.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Vacuum crack growth in alkali silicate glasses
AU - Waurischk, T.
AU - Reinsch, S.
AU - Rouxel, T.
AU - Behrens, H.
AU - Deubener, J.
AU - Müller, Ralf
N1 - Funding Information: The authors grateful acknowledge financial support from the Deutsche Forschungsgemeinschaft DFG priority program SPP1594 Topological Engineering of Ultra-Strong Glasses ( MU 963/14–2 ). Many thanks to A. Marek, S. Rüster, K. Junicke for careful sample preparation and handling, to P. Kiefer for echometer measurements of elastic constants, to M. Ostermann for XRF analyses, to R. Falkenberg and R. Maaß for helpful discussions, and to M. Finn for experimental advice and providing 30 years old samples originally measured by Gehrke et al. [8] .
PY - 2021/11/15
Y1 - 2021/11/15
N2 - 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.
AB - 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.
KW - Brittle fracture
KW - Calculated intrinsic fracture toughness
KW - Crack growth
KW - Silicate glass
UR - http://www.scopus.com/inward/record.url?scp=85113276176&partnerID=8YFLogxK
U2 - 10.1016/j.jnoncrysol.2021.121094
DO - 10.1016/j.jnoncrysol.2021.121094
M3 - Article
AN - SCOPUS:85113276176
VL - 572
JO - Journal of non-crystalline solids
JF - Journal of non-crystalline solids
SN - 0022-3093
M1 - 121094
ER -