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- Title
Theoretical Analysis of Thermophysical Properties of 3D Carbon/Epoxy Braided Composites with Varying Temperature.
- Authors
Jiang, Li-Li; Li, Zhen-Guo; Wang, Dong-Ye; Zhai, Jun-Jun; Kong, Xiang-Xia
- Abstract
A three-dimensional helix geometry unit cell is established to simulate the complex spatial configuration of 3D braided composites. Initially, different types of yarn factors, such as yarn path, cross-sectional shape, properties, and braid direction, are explained. Then, the multiphase finite element method is used to develop a new theoretical calculation procedure based on the unit cell for predicting the impacts of environmental temperature on the thermophysical properties of 3D four-direction carbon/epoxy braided composites. The changing rule and distribution characteristics of the thermophysical properties for 3D four-direction carbon/epoxy braided composites are obtained at temperatures ranging from room temperature to 200 °C. The influences of environmental temperature on the coefficients of thermal expansion (CTE) and the coefficients of thermal conduction (CTC) are evaluated, by which some important conclusions are drawn. A comparison is conducted between theoretical and experimental results, revealing that variations in temperature exert a notable influence on the thermophysical characteristics of 3D four-directional carbon/epoxy braided composites. The theoretical calculation procedure is an effective tool for the mechanical property analysis of composite materials with complex geometries.
- Subjects
THERMOPHYSICAL properties; BRAIDED structures; UNIT cell; FINITE element method; MATERIALS analysis
- Publication
Polymers (20734360), 2024, Vol 16, Issue 8, p1166
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym16081166