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Characterization of Hardness and Stiffness of Ceramic Matrix Composites through Instrumented Indentation Test

Shi, Yuan and Neubrand, Achim and Koch, Dietmar (2018) Characterization of Hardness and Stiffness of Ceramic Matrix Composites through Instrumented Indentation Test. Advanced Engineering Materials, 21. Wiley. DOI: 10.1002/adem.201800806 ISSN 1438-1656

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Abstract

The determination of the hardness allows useful qualitative conclusions regarding the mechanical properties of materials. It is one of the most economical characterization methods, since this can be carried out with little effort on small specimens. However, due to the heterogeneous structure containing hard and brittle ceramic phases the determination of hardness of ceramic matrix composites (CMCs) is a challenge and has thus rarely been investigated. In this work, the hardness and the stiffness in out of plane orientation are investigated on Liquid Silicon Infiltrated (LSI) C/C-SiC composites. For hardness tests a hemispherical indenter is used in order to evaluate residual indentation. The load-unload curve generated during the indentation process was analyzed to determine the hardness and stiffness. The employed experimental procedure is expected to be applicable to other CMCs with similar microstructure.

Item URL in elib:https://elib.dlr.de/131297/
Document Type:Article
Title:Characterization of Hardness and Stiffness of Ceramic Matrix Composites through Instrumented Indentation Test
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Shi, Yuanyuan.shi (at) dlr.dehttps://orcid.org/0000-0002-4210-9069
Neubrand, AchimFraunhofer IWM, Freiburg, GermanyUNSPECIFIED
Koch, DietmarDietmar.Koch (at) dlr.dehttps://orcid.org/0000-0003-4504-8721
Date:2018
Journal or Publication Title:Advanced Engineering Materials
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:21
DOI :10.1002/adem.201800806
Publisher:Wiley
ISSN:1438-1656
Status:Published
Keywords:Hardness, Stiffness, Ceramic Matrix Composites, Indentation Test
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Ceramic Composite Structures
Deposited By: Shi, Dr.-Ing. Yuan
Deposited On:28 Nov 2019 11:00
Last Modified:28 Nov 2019 11:00

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