A micro-image based reconstructed finite element model of needle-punched C/C composite

A 3D microscopic FE approach of needle-punched carbon-carbon composite (NP C/C) is modeled based upon micro-CT technology. The images of micro-CT of NP C/C are processed and the outlines of warp, weft and punched fibre bundles are extracted. Then discrete gray images are generated and from them a mi...

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Bibliographic Details
Published in:Composites science and technology 2017-12, Vol.153, p.48-61
Main Authors: Yu, Jian, Zhou, Chuwei, Zhang, Haijun
Format: Article
Language:English
Subjects:
Carbon-carbon composites
Composite materials
Compressive properties
Computer simulation
Damage simulation
Failure mechanisms
Finite element analysis
Finite element method
Image processing
Image reconstruction
Mathematical models
Micro-CT image
Needle punched C/C composite
Reconstructed FE model
Simulation
Stress-strain curves
Three dimensional composites
Warp
Weft
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Summary:A 3D microscopic FE approach of needle-punched carbon-carbon composite (NP C/C) is modeled based upon micro-CT technology. The images of micro-CT of NP C/C are processed and the outlines of warp, weft and punched fibre bundles are extracted. Then discrete gray images are generated and from them a microscopic FE model is reconstructed which can represent the features of micro structure and imperfections in NP C/C. Failure criterion and periodic boundary condition are employed in the FE approach and then progressive damages are investigated. Numerical simulation reveals the predominant failure mechanisms in this NP C/C under uniaxial tensile and compressive loads. The predicted stress/strain curves agree well with the experiment data.
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2017.09.029