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Predicting the mechanical behaviour of carbon fibre reinforced silicon carbide with interlaminar manufacturing defects - Determination of fracture mechanical input data and FE-modelling

Hofmann, Severin and Koch, Dietmar (2014) Predicting the mechanical behaviour of carbon fibre reinforced silicon carbide with interlaminar manufacturing defects - Determination of fracture mechanical input data and FE-modelling. Workshop on Testing and Modeling Ceramic and Carbon Matrix Composites, 4.-6.6.2014, Cachan, Frankreich.

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Official URL: http://www.matec-conferences.org

Abstract

A finite element approach based on experimental material data is presented in order to compute the mechanical reliability of carbon fibre reinforced silicon carbide, C/C-SiC, taking interlaminar manufacturing defects into account. The approach is evaluated on sample scale by modelling the flexural behaviour of C/C-SiC samples containing delaminations after liquid silicon infiltration (LSI) processing. The nondestructive evaluation methods, determination of fracture mechanical input data and the numerical cohesive zone approach are described. The numerical predictions of flexural stiffness and strength of samples with and without interlaminar defects were validated by bending tests of the respective samples. The difference between tensile and bending behaviour is explained by FE modelling for this group of CMC materials.

Item URL in elib:https://elib.dlr.de/91112/
Document Type:Conference or Workshop Item (Speech)
Title:Predicting the mechanical behaviour of carbon fibre reinforced silicon carbide with interlaminar manufacturing defects - Determination of fracture mechanical input data and FE-modelling
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hofmann, Severinseverin.hofmann (at) dlr.deUNSPECIFIED
Koch, Dietmardietmar.koch (at) dlr.deUNSPECIFIED
Date:June 2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Lamon, JacquesLMT ENS Cachan
Baranger, EmmanuelLMT ENS Cachan
Status:Published
Keywords:Ceramic Matrix Composite, fracture mechanics, delamination, finite element analysis, cohesive zone modelling, computer tomography, liquid silicon infiltration
Event Title:Workshop on Testing and Modeling Ceramic and Carbon Matrix Composites
Event Location:Cachan, Frankreich
Event Type:international Conference
Event Dates:4.-6.6.2014
Organizer:LMT, Ecole Normale Superieure de Cachan
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Rückkehrtechnologie
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Ceramic Composite Structures
Deposited By: Hofmann, Severin
Deposited On:11 Nov 2014 15:01
Last Modified:11 Dec 2017 11:09

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