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Characterization of Mechanical Properties under Shear Load of a Short-Carbon-Fiber-Reinforced C/SiC Ceramic

Shi, Yuan and Tushtev, Kamen and Koch, Dietmar (2015) Characterization of Mechanical Properties under Shear Load of a Short-Carbon-Fiber-Reinforced C/SiC Ceramic. Journal of Ceramic Science and Technology, 6 (3), pp. 183-190. Göller Verlag. DOI: 10.4416/JCST2014-00051 ISSN 2190-9385

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Abstract

The main objective of this work is the evaluation of the mechanical shear properties of a short-carbon-fiber-reinforced ceramic, which shows strong non-homogeneity in its microstructure and anisotropy through different fiber orientations. In this work, the shear modulus (G-modulus) and shear strength of this material were determined with the Iosipescu shear test and the Asymmetric-Four-Point-Bend shear test (AFPB test) at room temperature. Both test methods provide a nearly pure shear stress state in the shear plane and are therefore suitable for determination of the mechanical properties under shear load. Different notch opening angles with θ = 0° or θ = 110° and sample sizes for both methods are discussed. For strain measurement, strain gauge rosettes are applied on two sides of the test specimens. Because of the limited size of basic material, for the Iosipescu test small specimens were bonded onto aluminum tabs, which induced different failure mechanisms. Therefore the Iosipescu results are only valid for determination of shear modulus but not for evaluation of shear strength.

Item URL in elib:https://elib.dlr.de/98021/
Document Type:Article
Title:Characterization of Mechanical Properties under Shear Load of a Short-Carbon-Fiber-Reinforced C/SiC Ceramic
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Shi, Yuanyuan.shi (at) dlr.deUNSPECIFIED
Tushtev, KamenUniversität BremenUNSPECIFIED
Koch, Dietmardietmar.koch (at) dlr.deUNSPECIFIED
Date:August 2015
Journal or Publication Title:Journal of Ceramic Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:6
DOI :10.4416/JCST2014-00051
Page Range:pp. 183-190
Publisher:Göller Verlag
ISSN:2190-9385
Status:Published
Keywords:short-carbon-fiber C/SiC, mechanical properties under shear load, Iosipescushear test, Asymmetric-Four-Point-Bend shear test, FEM
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, Yuan
Deposited On:18 Nov 2015 14:30
Last Modified:10 Jan 2019 15:55

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