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Generating 3-dimensional microstructure models of porous ceramic matrix composites by means of X-ray tomography and FIB-slicing

Bartsch, Marion and Artzt, Katia and Wischek, Janine and Eggeler, Mario and Watermeyer, Philipp and Kelm, Klemens and Manero, Albert and Raghavan, Seetha and Kenesei, Peter and Okasinski, John and Almer, Jonathan (2017) Generating 3-dimensional microstructure models of porous ceramic matrix composites by means of X-ray tomography and FIB-slicing. 41st International conference on advanced ceramics and composites, 22.-27. Jan. 2017, Daytona Beach, FL, U.S.A..

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Abstract

Ceramic matrix composites (CMC) are developed for providing a high damage tolerance compared to monolithic ceramics. The mechanical behaviour of CMCs is defined by the properties of the constituents and the complex microstructure, which is controlled by the processing parameters. In this study the 3-dimensional microstructure of an all oxide porous CMC has been characterized on different length scales, utilizing non-destructive X-ray tomography in the range from mm to μm and combined sequential focused ion beam (FIB) ablation and scanning electron microscopy in the submicron range. The derived virtual microstructures were analysed, and data were used for generating numerical models for further mechanical or thermal analyses by finite element method. The CMC material was processed at DLR by winding a continuous alumina fibre bundle, which is infiltrated by aqueous alumina slurry, onto a mandrel and further sintering of the generated ceramic ‘green body’. The result is a CMC with complex hierarchical microstructure. Fibre arrangement, fibre volume fraction, and matrix porosity can be varied in a wide range.

Item URL in elib:https://elib.dlr.de/115788/
Document Type:Conference or Workshop Item (Speech)
Title:Generating 3-dimensional microstructure models of porous ceramic matrix composites by means of X-ray tomography and FIB-slicing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bartsch, Marionmarion.bartsch (at) dlr.deUNSPECIFIED
Artzt, Katiakatia.artzt (at) dlr.deUNSPECIFIED
Wischek, Janinejanine.wischek (at) dlr.deUNSPECIFIED
Eggeler, Mariomario.eggeler (at) dlr.deUNSPECIFIED
Watermeyer, Philippphilipp.watermeyer (at) dlr.deUNSPECIFIED
Kelm, Klemensklemens.kelm (at) dlr.deUNSPECIFIED
Manero, Albertuniversity of central florida, orlando, fl, usaUNSPECIFIED
Raghavan, Seethauniversity of central florida, orlando, fl, usaUNSPECIFIED
Kenesei, Peteradvanced photon source, argonne national laboratory, argonne, illinoisUNSPECIFIED
Okasinski, Johnadvanced photon source, argonne national laboratory, argonne, illinoisUNSPECIFIED
Almer, Jonathanadvanced photon source, argonne national laboratory, argonne, illinoisUNSPECIFIED
Date:23 January 2017
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:microstructure, tomography, CMC, x-ray, FIB
Event Title:41st International conference on advanced ceramics and composites
Event Location:Daytona Beach, FL, U.S.A.
Event Type:international Conference
Event Dates:22.-27. Jan. 2017
Organizer:The American Ceramic Society
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 - Virtual Engine and Validation methods
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Institute of Materials Research > Mechanical Testing of Materials
Deposited By: Bartsch, Dr.-Ing. Marion
Deposited On:22 Nov 2017 10:35
Last Modified:22 Nov 2017 10:35

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