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URN to cite this document: urn:nbn:de:bvb:703-epub-8857-1
Title data
Wagner, Lukas ; Puchas, Georg ; Flauder, Stefan ; Martin, Bernd ; Schafföner, Stefan:
Matrix fracture energy as a function of porosity for all oxide ceramic matrix composites.
In: Ceramics International.
Vol. 51
(2025)
Issue 27, Part A
.
- pp. 52066-52073.
ISSN 1873-3956
DOI der Verlagsversion: https://doi.org/10.1016/j.ceramint.2025.08.414
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Project information
| Project title: |
Project's official title Project's id Flexible, automatisierte Herstellung von keramischen Kurzfaserverbund-Bauteilen (FlexFiber) 518255159 Open Access Publizieren No information |
|---|---|
| Project financing: |
Deutsche Forschungsgemeinschaft |
Abstract
This study presents an easy way to investigate the suitability of a porous material as a matrix for a weak matrix composite (WMC) according to the model of He and Hutchinson without the use of expensive fibers. The influence of porosity on the fracture energy of a monolithic alumina-zirconia matrix system developed for an all-oxide ceramic matrix composite (Ox/Ox) was used to compare theoretical predictions with the real Ox/Ox behavior', which we presented in our previous study. The Ox/Ox material used for the comparison was a combination of α-alumina Nextel™ 610 fibers embedded in the said alumina-zirconia matrix system. The matrix fracture energy was determined on monolithic samples using a three-point-bending test, based on the work-of-fracture approach. By using the ratio between the determined fracture energy and the fracture energy of dense alumina fibers, it was possible to classify our material in the theoretical model. The results showed, that the method allowed a precise prediction of the damage-tolerant behavior of a CMC, thereby enabling the development of future matrix materials by using solely monolithics.
Further data
| Item Type: | Article in a journal |
|---|---|
| Keywords: | Porosity; Mechanical testing; Fracture energy; Ceramic matrix composites (CMCs) |
| DDC Subjects: | 600 Technology, medicine, applied sciences > 620 Engineering |
| Institutions of the University: | Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Stefan Schafföner Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Ceramic Materials |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-8857-1 |
| Date Deposited: | 05 Feb 2026 14:01 |
| Last Modified: | 05 Feb 2026 14:01 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/8857 |
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