Details
| Original language | English |
|---|---|
| Article number | 119739 |
| Journal | Journal of Non-Crystalline Solids |
| Volume | 527 |
| Early online date | 2 Nov 2019 |
| Publication status | Published - 1 Jan 2020 |
Abstract
Due to the stochastic nature of crack nucleation by Vickers indentation, a statistical analysis of propagation rates of 185 radial cracks was performed. Crack growth was observed directly using a video camera with high image acquisition rate. It is found that propagation rates are controlled by the environmental reactions at the crack-tip shortly after their initiation (< 1 s). Calibration of the stress intensity KI showed that the residual stress factor χ and the exponent n of the equation KI = =χPc−n (with P = =load and c = =crack length) are broadly distributed among the 185 analyzed cracks, ranging from 10−16 to 104 and from 0.1 to 5, respectively. For the most frequent crack, the equation KI = =0.052Pc−1.47 holds. The results show that correlations of indentation-induced crack length to stress intensity necessitate the use of statistical significant data that are calibrated by the environmental reactions at the crack-tip.
Keywords
- Soda-lime-silica glass, Stress intensity factor, Subcritical crack growth, Vickers indentation
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. 527, 119739, 01.01.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Statistical analysis of propagation rates of indentation-induced radial cracks in soda-lime-silica glass
AU - Kiefer, P.
AU - Deubener, J.
AU - Müller, R.
AU - Behrens, H.
N1 - Funding information: We gratefully acknowledge financial support of the Deutsche Forschungsgemeinschaft (DFG) by the priority program SPP 1594 . We gratefully acknowledge financial support of the Deutsche Forschungsgemeinschaft (DFG) by the priority program SPP 1594.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Due to the stochastic nature of crack nucleation by Vickers indentation, a statistical analysis of propagation rates of 185 radial cracks was performed. Crack growth was observed directly using a video camera with high image acquisition rate. It is found that propagation rates are controlled by the environmental reactions at the crack-tip shortly after their initiation (< 1 s). Calibration of the stress intensity KI showed that the residual stress factor χ and the exponent n of the equation KI = =χPc−n (with P = =load and c = =crack length) are broadly distributed among the 185 analyzed cracks, ranging from 10−16 to 104 and from 0.1 to 5, respectively. For the most frequent crack, the equation KI = =0.052Pc−1.47 holds. The results show that correlations of indentation-induced crack length to stress intensity necessitate the use of statistical significant data that are calibrated by the environmental reactions at the crack-tip.
AB - Due to the stochastic nature of crack nucleation by Vickers indentation, a statistical analysis of propagation rates of 185 radial cracks was performed. Crack growth was observed directly using a video camera with high image acquisition rate. It is found that propagation rates are controlled by the environmental reactions at the crack-tip shortly after their initiation (< 1 s). Calibration of the stress intensity KI showed that the residual stress factor χ and the exponent n of the equation KI = =χPc−n (with P = =load and c = =crack length) are broadly distributed among the 185 analyzed cracks, ranging from 10−16 to 104 and from 0.1 to 5, respectively. For the most frequent crack, the equation KI = =0.052Pc−1.47 holds. The results show that correlations of indentation-induced crack length to stress intensity necessitate the use of statistical significant data that are calibrated by the environmental reactions at the crack-tip.
KW - Soda-lime-silica glass
KW - Stress intensity factor
KW - Subcritical crack growth
KW - Vickers indentation
UR - http://www.scopus.com/inward/record.url?scp=85074239148&partnerID=8YFLogxK
U2 - 10.1016/j.jnoncrysol.2019.119739
DO - 10.1016/j.jnoncrysol.2019.119739
M3 - Article
AN - SCOPUS:85074239148
VL - 527
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
M1 - 119739
ER -