Damage behavior of 3D orthogonal C/C composites considering interface pores
Source abstract
Abstract
The interface and porosity play important roles in determining the damage of C/C composites (C/Cs). This study presents a novel finite element model that incorporates cohesive elements with porosity. Based on this model, numerical analyses were conducted to investigate the axial compressive damage of C/C composites with orthogonal woven structure (3DOW) and fine weave pieced (3DFWP) structures, both of which are 3D woven structures. The results indicate that damage initially occurs at the interface, and axial fiber damage is the decisive factor in material failure. The pores at the interface have little effect on the failure of C/Cs. Eliminating the pores within the fibers significantly improves the compression performance of the material, and the strengths of the two structural models increase by 28% and 6%.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Mechanical Behavior of Composites · Cellular and Composite Structures · Polymer crystallization and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Research Center of Composite Materials, Engineering Research Center of Material Composition and Advanced Dispersion Technology, Ministry of Education, Shanghai University, Shanghai, China
School of Astronautics, Northwestern Polytechnical University, Xi’an, China
Xi’an Aerospace Composites Research Institute, Xi’an, China
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