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Inspection of geometry influence and fiber orientation to characteristic value for short fiber reinforced ceramic matrix composite under bending load

Shi, Yuan and Hausherr, J. and Hoffmann, H. and Koch, Dietmar (2017) Inspection of geometry influence and fiber orientation to characteristic value for short fiber reinforced ceramic matrix composite under bending load. Journal of the European Ceramic Society, 37 (4), pp. 1291-1303. Elsevier. DOI: http://dx.doi.org/10.1016/j.jeurceramsoc.2016.11.042 ISSN 0955-2219

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Abstract

For use of short fiber reinforced ceramics the knowledge of the influence of coupon geometry on the failure mode and the determined resistance in bending tests is necessary. In contrast to the continuous fiber reinforced ceramic matrix composites (CMC), for short fiber reinforced CMC there are only few studies and no standard on consideration of size effects. In the present work, the influence of coupon geometry and test conditions on the average value and distribution of flexural strength has been investigated. Two short fiber CMCs with different fiber length were examined under four point bending load. Moreover, the relationship between fiber orientation in the loaded area, failure location and measured flexural strength was investigated through high resolution X-ray computer tomography (μCT) and SEM. The presented outputs will be proposed to a future standard for bending test of short fiber reinforced CMC materials with different fiber length.

Item URL in elib:https://elib.dlr.de/108821/
Document Type:Article
Title:Inspection of geometry influence and fiber orientation to characteristic value for short fiber reinforced ceramic matrix composite under bending load
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Shi, Yuanyuan.shi (at) dlr.deUNSPECIFIED
Hausherr, J.fraunhofer iscUNSPECIFIED
Hoffmann, H.fraunhofer iscUNSPECIFIED
Koch, Dietmardietmar.koch (at) dlr.deUNSPECIFIED
Date:2017
Journal or Publication Title:Journal of the European Ceramic Society
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:37
DOI :http://dx.doi.org/10.1016/j.jeurceramsoc.2016.11.042
Page Range:pp. 1291-1303
Publisher:Elsevier
ISSN:0955-2219
Status:Published
Keywords:Bending test; Coupon size; Fiber orientation; Short fiber; CMC; Standard
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:21 Sep 2017 10:30
Last Modified:10 Jan 2019 15:49

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