Kounga Njiwa, Alain Brice ; Fett, Theo ; Lupascu, Doru C. ; Rödel, Jürgen (2006)
Effect of geometry and electrical boundary conditions on R-curves for lead zirconate titanate ceramics.
In: Engineering Fracture Mechanics, 73 (3)
doi: 10.1016/j.engfracmech.2005.08.003
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
R-curve measurements on PZT poled in thickness direction were carried out on CT specimens under different electric boundary conditions. The effect of specimen geometry was evaluated by measuring R-curves in CT specimens of different thickness and comparing these with R-curves in bend bars. A low coercive stress is responsible for the development of a large switching zone. This switching zone is of high relevance for the computation of the actual stress intensity factor at the crack tip and for the R-curve calculation.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2006 |
| Autor(en): | Kounga Njiwa, Alain Brice ; Fett, Theo ; Lupascu, Doru C. ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Effect of geometry and electrical boundary conditions on R-curves for lead zirconate titanate ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | Februar 2006 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Engineering Fracture Mechanics |
| Jahrgang/Volume einer Zeitschrift: | 73 |
| (Heft-)Nummer: | 3 |
| DOI: | 10.1016/j.engfracmech.2005.08.003 |
| Kurzbeschreibung (Abstract): | R-curve measurements on PZT poled in thickness direction were carried out on CT specimens under different electric boundary conditions. The effect of specimen geometry was evaluated by measuring R-curves in CT specimens of different thickness and comparing these with R-curves in bend bars. A low coercive stress is responsible for the development of a large switching zone. This switching zone is of high relevance for the computation of the actual stress intensity factor at the crack tip and for the R-curve calculation. |
| Freie Schlagworte: | PZT; Fracture; R-curve |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 18 Mai 2011 15:19 |
| Letzte Änderung: | 05 Mär 2013 09:47 |
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