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Interpreting high temperature deformation behavior of a ceramic matrix composite via high energy x-rays and numerical simulation

Manero, Albert and Sofronsky, Stephen and Artzt, Katia and Hackemann, Stefan and Wischek, Janine and Okasinski, John and Kenesei, Peter and Almer, Jonathan and Bartsch, Marion and Raghavan, Seetha (2016) Interpreting high temperature deformation behavior of a ceramic matrix composite via high energy x-rays and numerical simulation. In: 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, pp. 1-8. American Institute of Aeronautics and Astronautics Inc, AIAA. 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 04.-08. Jan. 2016, San Diego; United States of America. DOI: 10.2514/6.2016-0410 ISBN 978-162410392-6

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Official URL: http://arc.aiaa.org/doi/abs/10.2514/6.2016-0410

Abstract

All-oxide Ceramic Matrix Composites (CMC), due to their damage tolerance and thermal stability, are promising candidates for high temperature applications, including combustion liners and thermal protection systems in aerospace. In these applications, mechanical loads are introduced at high temperatures up to 1200°C or even higher, which results in complex deformation behavior. For understanding the complex behavior of an all oxide CMC under such extreme environments, laboratory tests and numerical simulations have been performed. The material investigated in this study comprises Nextel R 610 alumina fiber bundles and a porous α alumina matrix, and the composite has been produced by a computer controlled winding process. Analytical and numerical work has been performed for developing a constitutive law describing the observed creep behavior of specimens with unidirectional fiber orientation under compressive load. While for fiber orientations parallel to the compressive load a model with isochoric matrix behavior captured the experimental results well, discrepancies occurred for other fiber orientations. Parameter studies indicated that depending on fiber orientation and matrix properties the composite deformation is due to a combination of matrix compaction and fiber rotation. In-situ synchrotron studies at Argonne National Laboratory's Advanced Photon Source have been conducted on unidirectional fibre reinforced CMC specimens at 1200°C while stepwise increasing compressive mechanical load. For investigating the local strain in the composite, diffraction measurements were conducted under representative loading, and transmission radiography was utilized to study the evolution of matrix deformation and fiber rotation. First results indicate that the strain in the fiber and matrix grains of the all alumina composites may be isolated during analysis, providing information on load transfer between fiber and matrix and on elastic and creep behavior of the composite. These results will be used to inform computational simulation to produce more accurate lifetime prediction in application.

Item URL in elib:https://elib.dlr.de/108397/
Document Type:Conference or Workshop Item (Speech)
Title:Interpreting high temperature deformation behavior of a ceramic matrix composite via high energy x-rays and numerical simulation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Manero, Albertuniversity of central florida, orlando, fl, usaUNSPECIFIED
Sofronsky, Stephenuniversity of central florida, orlando, fl, usaUNSPECIFIED
Artzt, Katiakatia.artzt (at) dlr.deUNSPECIFIED
Hackemann, Stefanstefan.hackemann (at) dlr.deUNSPECIFIED
Wischek, Janinejanine.wischek (at) dlr.deUNSPECIFIED
Okasinski, Johnadvanced photon source, argonne national laboratory, argonne, illinoisUNSPECIFIED
Kenesei, Peteradvanced photon source, argonne national laboratory, argonne, illinoisUNSPECIFIED
Almer, Jonathanadvanced photon source, argonne national laboratory, argonne, illinoisUNSPECIFIED
Bartsch, Marionmarion.bartsch (at) dlr.dehttps://orcid.org/0000-0002-3952-2928
Raghavan, Seethauniversity of central florida, orlando, fl, usaUNSPECIFIED
Date:January 2016
Journal or Publication Title:57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2016-0410
Page Range:pp. 1-8
Publisher:American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN:978-162410392-6
Status:Published
Keywords:Ceramic materials; Composite materials; Creep; Numerical models; Diffraction measurements
Event Title:57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Event Location:San Diego; United States of America
Event Type:international Conference
Event Dates:04.-08. Jan. 2016
Organizer:American Institute of Aeronautics and Astronautics Inc, AIAA
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
Deposited By: Bartsch, Dr.-Ing. Marion
Deposited On:28 Nov 2016 07:16
Last Modified:28 Nov 2016 07:16

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