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Tensile strength distribution of all-oxide ceramic matrix mini-composites with porous alumina matrix phase

Richter, Henning and Peters, Piet W. M. (2016) Tensile strength distribution of all-oxide ceramic matrix mini-composites with porous alumina matrix phase. Journal of the European Ceramic Society, 36 (13), pp. 3185-3191. Elsevier. DOI: 10.1016/j.jeurceramsoc.2016.05.012 ISSN 0955-2219

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Official URL: http://www.sciencedirect.com/science/article/pii/S0955221916302424

Abstract

The mechanical behaviour of all-oxide ceramic matrix mini-composites with porous alumina matrix phase was investigated by performing uniaxial tensile tests on specimens with different gauge lengths. The specimens were fabricated from Nextel™ 610 fibres by slurry infiltration and subsequent sintering at 1300 °C for 1 h. The stress–strain curves of the tested mini-composites revealed that the porous alumina matrix phase accumulates damage with increasing tensile load, but continues to contribute to the mini-composites’ tensile stiffness until ultimate failure occurs. A dependence of the tested mini-composites’ axial tensile strength on gauge length was not observed. The mean stress in the fibres at mini-composite failure was found to decrease with increasing matrix volume fraction, indicating that the cause of ultimate failure of the mini-composites can be attributed to the propagation of matrix cracks.

Item URL in elib:https://elib.dlr.de/104555/
Document Type:Article
Title:Tensile strength distribution of all-oxide ceramic matrix mini-composites with porous alumina matrix phase
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Richter, HenningHenning.Richter (at) dlr.dehttps://orcid.org/0000-0002-5230-6293
Peters, Piet W. M.UNSPECIFIEDUNSPECIFIED
Date:October 2016
Journal or Publication Title:Journal of the European Ceramic Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:36
DOI :10.1016/j.jeurceramsoc.2016.05.012
Page Range:pp. 3185-3191
Publisher:Elsevier
ISSN:0955-2219
Status:Published
Keywords:Ceramic-matrix composites (CMCs); Mechanical testing; Tensile strength; Statistical properties; Microstructure
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Combustion Chamber Technologies
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Richter, Henning
Deposited On:22 Jun 2016 14:14
Last Modified:31 Jul 2019 20:01

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