1 Anisotropic fluid diffusion in carbon fiber reinforced composite rods: Experimental, analytical and numerical study Abedin Gagani * (a) , Andrejs Krauklis (a) , Andreas T. Echtermeyer (a) (a) Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Richard Birkelandsvei 2b, Trondheim, Norway Abstract Carbon fiber composite plastic (CFRP) rods immersed in water present a pronounced anisotropic diffusion behavior. Understanding and predicting this behavior is important as the mechanical properties of the material are influenced by the moisture content. A simple experimental procedure allowing identification of both radial and axial diffusivity is presented. The diffusivities are calculated based on a new anisotropic analytical or numerical analysis. The diffusivity in the axial direction was found to be 14.3 times the diffusivity in radial direction. The analytical and numerical approach show a good agreement. A practical engineering case study is also presented: the moisture content profile of a carbon fiber rod inside a cylindrical metal end fitting for long exposure times (5, 10, 25 and 50 years). Keywords: Environmental degradation composites; Fluid diffusion composites; Analytical diffusion composites, FE diffusion composites; Diffusion composite cylinders * Corresponding author E-mail: [email protected] (A.Gagani)
Anisotropic fluid diffusion in carbon fiber reinforced composite rods: Experimental, analytical and numerical study
May 16, 2023
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