Prediction of Elastic Properties for a Wound Oxide Ceramic Matrix Composite Material

Jain, Neraj; Jemmali, Raouf; Hofmann, Severin; Koch, Dietmar; Hackemann, Stefan

doi:10.1111/ijac.12381

Cited by 9 publications

(10 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This effect is dominant in the above-mentioned fiber orientations and results in a relatively weaker matrix with lower stiffness when compared with other fiber orientations. This phenomenon is discussed in detail in previous work [38].…”

Section: Resultsmentioning

confidence: 62%

See 1 more Smart Citation

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

Jain

Koch

2020

J. Compos. Sci.

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 62%

“…The in-plane elastic properties of the virtual UD layers for both the materials are listed in Table 3. The values of WHIPOX™ are taken from a previous publication [38]. In the case of C/C-SiC, the values of the UD values were evaluated from data fitting for other fiber orientations.…”

Section: Elastic Behaviormentioning

confidence: 99%

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

Jain

Koch

2020

J. Compos. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…A number of problems impede this procedure: a transfer of the mechanical properties of unidirectional plies to the laminate is only valid for a limited extent, referring to the sintering behavior of the matrix which depends on the fiber orientations of the laminate. 7 In addition, the layer interface properties are unknown and the composite is ground before application, which blurs the information of the layer structure. Consequently, in this work the material is assumed to be homogeneous and orthotropic, so it is regarded from a macroscopic point of view ignoring the layered structure.…”

Section: Modeling the Anisotropic Deformation Behavior Of Whipox®mentioning

confidence: 99%

“…[3][4][5] For the material WHIPOX Õ this approach was pursued in a PhD thesis. 6 In another work 7 an inverse laminate theory is applied on experimental data of tensile tests of WHIPOX Õ in order to determine the elastic properties of single unidirectional laminae. These approaches could not be generalized because a number of practical problems impede the transfer of a microstructural analysis to a macro-scale model.…”

Section: Introductionmentioning

confidence: 99%

Adaption of a material model and development of a stochastic failure criterion for ceramic matrix composite structures

Becker

Dresbach

Reh

2016

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

Ceramic matrix composites (CMCs) show high thermal resistance combined with damage tolerance and non-brittle failure. Therefore, they are suitable for mechanically loaded components at high temperatures. For dimensioning of components, an adaption of existing simulation and calculation methods for CMC materials is required. The material investigated in this work is a wound oxide CMC with a defined fiber orientation and a highly porous matrix. Due to manufacturing conditions, randomly distributed macroscopic pores are present in the composite. Since failure is initiated by these pores, a statistical investigation of strength is performed based on the weakest link theory. Several series of tensile tests were performed to reveal the relation between stress and strain and obtain their ultimate values. The application of two statistical criteria showed that fracture strains are well represented by Weibull distributions. The tensile tests were compared with results of finite element simulations, using the simulation software ANSYS Õ . An anisotropic Weibull criterion was set up and adapted to the results of the tensile tests. Hereby, the anisotropic nonlinear deformation behavior as well as the scatter of failure strain could be reproduced by numerical simulations. The adapted material model and failure criterion were validated by further experiments and exemplified by application in a reliability analysis of a notional flame tube.

show abstract

“…It has been demonstrated that filament winding is a promising manufacturing technique, as compared to the use of textile preforms, to attain reinforcement in arbitrary directions within CMC structures [9,17]. A novel manufacturing method utilizing wet filament wind unidirectional carbon fiber perform and liquid silicon infiltration (LSI) has been develop by the German Aerospace Institute (DLR) to manufacture state-of-the-art C/C-SiC structures [18].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Multiscale Method of Cells-Based Models for Predicting Elastic Properties of Filament Wound C/C-SiC

Pineda

Fassin

Bednarcyk³

et al. 2017

American Society for Composites 2017

View full text Add to dashboard Cite

Three different multiscale models, based on the method of cells (generalized and high fidelity) micromechanics models were developed and used to predict the elastic properties of C/C-SiC composites. In particular, the following multiscale modeling strategies were employed: Concurrent multiscale modeling of all phases using the generalized method of cells, synergistic (two-way coupling in space) multiscale modeling with the generalized method of cells, and hierarchical (one-way coupling in space) multiscale modeling with the high fidelity generalized method of cells. The three models are validated against data from a hierarchical multiscale finite element model in the literature for a repeating unit cell of C/C-SiC. Furthermore, the multiscale models are used in conjunction with classical lamination theory to predict the stiffness of C/C-SiC plates manufactured via a wet filament winding and liquid silicon infiltration process recently developed by the German Aerospace Institute.

show abstract

Prediction of Elastic Properties for a Wound Oxide Ceramic Matrix Composite Material

Cited by 9 publications

References 19 publications

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

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

Adaption of a material model and development of a stochastic failure criterion for ceramic matrix composite structures

Comparison of Multiscale Method of Cells-Based Models for Predicting Elastic Properties of Filament Wound C/C-SiC

Contact Info

Product

Resources

About