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
Artikel, Bibliographie
Kurzbeschreibung (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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 1996 |
| Autor(en): | Fett, Theo ; Munz, D. ; Seidel, Jürgen ; Stech, Martin ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Correlation between long and short crack R-curves in alumina using the crack opening displacement and fracture mechanical weight function approach |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 1996 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 79 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1111/j.1151-2916.1996.tb08571.x |
| Kurzbeschreibung (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. |
| Freie Schlagworte: | STRESS-INTENSITY FACTOR; ELLIPTICAL SURFACE CRACKS; RESISTANCE; BEHAVIOR; CERAMICS; SPECIMENS; TOUGHNESS; GROWTH; FLAWS |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Fachbereich Materialwissenschaft (1999 aufgegangen in 11 Fachbereich Material- und Geowissenschaften) |
| Hinterlegungsdatum: | 19 Nov 2008 16:00 |
| Letzte Änderung: | 20 Feb 2020 13:31 |
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