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Prediction of Failure in Ceramic Matrix Composites Using Damage-Based Failure Criterion

Jain, Neraj and Koch, Dietmar (2020) Prediction of Failure in Ceramic Matrix Composites Using Damage-Based Failure Criterion. Journal of Composites Science. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/jcs4040183. ISSN 2504-477X.

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Official URL: https://www.mdpi.com/2504-477X/4/4/183


This paper presents a damage-based failure criterion and its implementation in order to predict failure in ceramic matrix composites (CMC) manufactured via filament winding. The material behavior of CMCs is anisotropic and strongly depends on the angle between fiber orientation and loading direction. The inelastic behavior of laminates with different fiber orientations under tension and shear is modeled with the help of continuum damage mechanics. The parameters required for the damage model are obtained from a standard tensile and shear test. An isotropic damage law determines the evolution of damage in thermodynamic space and considers the interaction of damage parameters in different principal material directions. A quadratic damage-based failure criterion inspired by the Tsai-Wu failure criterion is proposed. Failure stress and strain can be predicted with higher accuracy compared to the Tsai-Wu failure criterion in stress- or strain-space. The use of the proposed damage limits allows designing a CMC component based on the microstructural phenomenon of stiffness loss. With the help of results obtained from modeling and experiments, fracture mechanics during the Iosipescu-shear test of CMCs and its capability to determine the shear strength of the material is discussed.

Item URL in elib:https://elib.dlr.de/139264/
Document Type:Article
Title:Prediction of Failure in Ceramic Matrix Composites Using Damage-Based Failure Criterion
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Jain, NerajNeraj.Jain (at) dlr.dehttps://orcid.org/0000-0002-7853-1894
Koch, Dietmardietmar.koch (at) mrm.uni-augsburg.dehttps://orcid.org/0000-0003-4504-8721
Date:December 2020
Journal or Publication Title:Journal of Composites Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.3390/jcs4040183
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:continuum damage mechanics; damage-based failure criterion; wound CMC
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 (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Ceramic Composite Structures
Deposited By: Jain, Neraj
Deposited On:08 Dec 2020 15:01
Last Modified:08 Dec 2020 15:01

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