Details
| Original language | English |
|---|---|
| Article number | 268 |
| Journal | Frontiers in Materials |
| Volume | 7 |
| Publication status | Published - 14 Aug 2020 |
Abstract
To explore the impact of ambient and structural water on static fatigue, the initiation and growth of 3279 Vickers induced median radial cracks were automatically recorded and analyzed. We find that humidity is more efficient in initiating cracks and promoting their growth than water, which is dissolved in the glass structure. In particular for slow crack growth (< 3 × 10–6 m s–1), tests in dry nitrogen showed a considerable decrease in the crack growth exponent with increasing water content of the glasses. On the other hand, if tests were performed in humid air, the crack growth exponent was independent of the water content of the hydrous glasses, while stress intensity decreased slightly. These observations indicate that water promotes the processes at the crack-tip regardless of its origin. However, ambient water is more efficient.
Keywords
- automated analysis, hydrous glass, indentation fracture toughness, slow crack growth, Vickers indentation
ASJC Scopus subject areas
- Materials Science(all)
- Materials Science (miscellaneous)
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In: Frontiers in Materials, Vol. 7, 268, 14.08.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Automated Analysis of Slow Crack Growth in Hydrous Soda-Lime Silicate Glasses
AU - Kiefer, Philipe
AU - Maiwald, Martin
AU - Deubener, Joachim
AU - Balzer, Robert
AU - Behrens, Harald
AU - Waurischk, Tina
AU - Reinsch, Stefan
AU - Müller, Ralf
N1 - Funding Information: We gratefully acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG) by the priority program SPP 1594.
PY - 2020/8/14
Y1 - 2020/8/14
N2 - To explore the impact of ambient and structural water on static fatigue, the initiation and growth of 3279 Vickers induced median radial cracks were automatically recorded and analyzed. We find that humidity is more efficient in initiating cracks and promoting their growth than water, which is dissolved in the glass structure. In particular for slow crack growth (< 3 × 10–6 m s–1), tests in dry nitrogen showed a considerable decrease in the crack growth exponent with increasing water content of the glasses. On the other hand, if tests were performed in humid air, the crack growth exponent was independent of the water content of the hydrous glasses, while stress intensity decreased slightly. These observations indicate that water promotes the processes at the crack-tip regardless of its origin. However, ambient water is more efficient.
AB - To explore the impact of ambient and structural water on static fatigue, the initiation and growth of 3279 Vickers induced median radial cracks were automatically recorded and analyzed. We find that humidity is more efficient in initiating cracks and promoting their growth than water, which is dissolved in the glass structure. In particular for slow crack growth (< 3 × 10–6 m s–1), tests in dry nitrogen showed a considerable decrease in the crack growth exponent with increasing water content of the glasses. On the other hand, if tests were performed in humid air, the crack growth exponent was independent of the water content of the hydrous glasses, while stress intensity decreased slightly. These observations indicate that water promotes the processes at the crack-tip regardless of its origin. However, ambient water is more efficient.
KW - automated analysis
KW - hydrous glass
KW - indentation fracture toughness
KW - slow crack growth
KW - Vickers indentation
UR - http://www.scopus.com/inward/record.url?scp=85090763502&partnerID=8YFLogxK
U2 - 10.3389/fmats.2020.00268
DO - 10.3389/fmats.2020.00268
M3 - Article
AN - SCOPUS:85090763502
VL - 7
JO - Frontiers in Materials
JF - Frontiers in Materials
SN - 2296-8016
M1 - 268
ER -