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Ceramic fibre reinforced ceramic matrix materials with porous matrix - effect of porosity on mechanical behaviour

Bartsch, Marion and Richter, Henning and Artzt, Katia (2014) Ceramic fibre reinforced ceramic matrix materials with porous matrix - effect of porosity on mechanical behaviour. 5. Seminar of Graduate School SiMiDe - Simulation-based Microstructural Design, 04. Juni 2014, Bochum, Deutschland.

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Abstract

Ceramic fibre reinforced ceramics (CMC) have been developed to achieve ceramic materials with a high damage tolerance, i.e. high fracture toughness and some remaining load bearing capacity after exceeding the maximum strength. Such damage tolerant behaviour is based on energy dissipation during the damaging and fracturing process by mechanisms like crack deviation and branching, fibre/matrix debonding, crack bridging by fibres and fibbre sliding in the matrix. Crucial is a controlled fibre matrix dedonding, which can be achieved either by introducing fibre coatings providing weak fibre/matrix interphases or by manufacturing a CMC with a highly porous matrix. The effect of porosity on the mechanical behaviour of a CMC will be discussed on the example of the so called WHIPOX, an oxide fibre - oxide matrix CMC developed at the German Aerospace Center in Cologne. Information will be given on processing and characterization of the material as well as numerical approaches for modelling the material with focus on the effects of the porosity.

Item URL in elib:https://elib.dlr.de/89505/
Document Type:Conference or Workshop Item (Speech)
Title:Ceramic fibre reinforced ceramic matrix materials with porous matrix - effect of porosity on mechanical behaviour
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bartsch, Marionmarion.bartsch (at) dlr.deUNSPECIFIED
Richter, Henninghenning.richter (at) dlr.deUNSPECIFIED
Artzt, Katiakatia.artzt (at) dlr.deUNSPECIFIED
Date:4 June 2014
Refereed publication:No
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Fibre reinforced ceramics, CMC, damage tolerance, porosity
Event Title:5. Seminar of Graduate School SiMiDe - Simulation-based Microstructural Design
Event Location:Bochum, Deutschland
Event Type:Workshop
Event Dates:04. Juni 2014
Organizer:Universitätsallianz Metropole Ruhr (UAMR) - SiMiDe Graduate School
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 - Combusion Chamber Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Bartsch, Dr.-Ing. Marion
Deposited On:10 Jul 2014 09:28
Last Modified:10 Jul 2014 09:28

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