Oates, William S. ; Lynch, Christopher S. ; Kounga Njiwa, Alain B. ; Lupascu, Doru C. (2005)
Anisotropic Fracture Behavior in Ferroelectric Relaxor PZN-4.5%PT Single Crystals.
In: Journal of the American Ceramic Society, 88 (7)
doi: 10.1111/j.1551-2916.2005.00332.x
Article, Bibliographie
Abstract
The anisotropic fracture behavior in unpoled and poled (1−x)Pb(Zn2/3Nb1/3)−xPbTiO3 (x=0.045) (PZN–4.5%PT) single-crystal relaxor ferroelectrics cut along the crystal planes, [010] and [001], was characterized. The crack tip toughness (Ktip) determined from Vickers indentations was compared with the R-curve behavior measured using the single-edge V-notch beam (SEVNB) method. Several of the SEVNB fracture experiments resulted in cracks forming and propagating under mixed mode loading (KI and KII) along the [110] crystal plane. Other specimens formed cracks at 0° along the [010] plane. To assess the anisotropic fracture behavior, the local and global critical energy release rates were determined using Stroh's formalism.
| Item Type: | Article |
|---|---|
| Erschienen: | 2005 |
| Creators: | Oates, William S. ; Lynch, Christopher S. ; Kounga Njiwa, Alain B. ; Lupascu, Doru C. |
| Type of entry: | Bibliographie |
| Title: | Anisotropic Fracture Behavior in Ferroelectric Relaxor PZN-4.5%PT Single Crystals |
| Language: | English |
| Date: | July 2005 |
| Journal or Publication Title: | Journal of the American Ceramic Society |
| Volume of the journal: | 88 |
| Issue Number: | 7 |
| DOI: | 10.1111/j.1551-2916.2005.00332.x |
| Abstract: | The anisotropic fracture behavior in unpoled and poled (1−x)Pb(Zn2/3Nb1/3)−xPbTiO3 (x=0.045) (PZN–4.5%PT) single-crystal relaxor ferroelectrics cut along the crystal planes, [010] and [001], was characterized. The crack tip toughness (Ktip) determined from Vickers indentations was compared with the R-curve behavior measured using the single-edge V-notch beam (SEVNB) method. Several of the SEVNB fracture experiments resulted in cracks forming and propagating under mixed mode loading (KI and KII) along the [110] crystal plane. Other specimens formed cracks at 0° along the [010] plane. To assess the anisotropic fracture behavior, the local and global critical energy release rates were determined using Stroh's formalism. |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 18 May 2011 15:20 |
| Last Modified: | 05 Mar 2013 09:47 |
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