Fett, Theo ; Munz, D. ; Seidel, Jürgen ; Stech, Martin ; Rödel, Jürgen (1996)
Correlation between long and short crack R-curves in alumina using the crack opening displacement and fracture mechanical weight function approach.
In: Journal of the American Ceramic Society, 79 (5)
doi: 10.1111/j.1151-2916.1996.tb08571.x
Article, Bibliographie
Abstract
Both fine grain sized and coarse grain sized alumina has been used as a model material to correlate short crack R-curves by the surface-flaw-in-flexure method with long crack R-curves from a compact tension specimen. The analysis has been made using the crack opening displacement from long cracks combined with the appropriate weight function to compute the crack closure stresses by crack bridging as a function of crack opening displacement. Then the long crack R-curve, the short crack curve, as well as the crack opening displacement for short cracks are computed, The agreement with the experimental data is within an absolute value of about 0.3 MPa root m and attributed to uncertainties in determining the crack tip toughness and effects due to subcritical crack growth.
| Item Type: | Article |
|---|---|
| Erschienen: | 1996 |
| Creators: | Fett, Theo ; Munz, D. ; Seidel, Jürgen ; Stech, Martin ; Rödel, Jürgen |
| Type of entry: | Bibliographie |
| Title: | Correlation between long and short crack R-curves in alumina using the crack opening displacement and fracture mechanical weight function approach |
| Language: | English |
| Date: | May 1996 |
| Journal or Publication Title: | Journal of the American Ceramic Society |
| Volume of the journal: | 79 |
| Issue Number: | 5 |
| DOI: | 10.1111/j.1151-2916.1996.tb08571.x |
| Abstract: | Both fine grain sized and coarse grain sized alumina has been used as a model material to correlate short crack R-curves by the surface-flaw-in-flexure method with long crack R-curves from a compact tension specimen. The analysis has been made using the crack opening displacement from long cracks combined with the appropriate weight function to compute the crack closure stresses by crack bridging as a function of crack opening displacement. Then the long crack R-curve, the short crack curve, as well as the crack opening displacement for short cracks are computed, The agreement with the experimental data is within an absolute value of about 0.3 MPa root m and attributed to uncertainties in determining the crack tip toughness and effects due to subcritical crack growth. |
| Uncontrolled Keywords: | STRESS-INTENSITY FACTOR; ELLIPTICAL SURFACE CRACKS; RESISTANCE; BEHAVIOR; CERAMICS; SPECIMENS; TOUGHNESS; GROWTH; FLAWS |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials 11 Department of Materials and Earth Sciences > Department of Earth Sciences (1999 merged into Department of Materials and Earth Sciences) |
| Date Deposited: | 19 Nov 2008 16:00 |
| Last Modified: | 20 Feb 2020 13:31 |
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