COMPOSITES SCIENCE AND ENGINEERING ›› 2025, Vol. 0 ›› Issue (5): 96-107.DOI: 10.19936/j.cnki.2096-8000.20250528.013

• DESIGN AND TECHNIQUE • Previous Articles     Next Articles

Textile reinforcement permeability prediction based on improved pore network model

FAN Qi1, WANG Jing2, YANG Bin1,3, WANG Jihui1, NI Aiqing4*   

  1. 1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;
    2. Xi’an Aerospace Composites Research Institute, Xi’an 710025, China;
    3. Department of Mechanical Engineering, Polytechnique Montreal, Montreal H3T 1J4, Canada;
    4. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
  • Received:2024-02-29 Online:2025-05-28 Published:2025-07-11

Abstract: A method for predicting the in-plane permeability of composite fabric reinforcements through a pore network model was established. First, a three-dimensional image sequence was obtained by non-destructive scanning of the fabric sample using micro-computed tomography (Micro-CT), and the image was binarized, separated into pore areas, and segmented using watershed segmentation to extract the pore network model. The influence of two segmentation methods on the parameters of the pore network model was compared. Secondly, considering the flow inside the pores and modifying the parameters such as the length and radius of the pore network unit, a fictionally-graded micro-tube flow model was adopted to improve the algorithm for calculating the permeability coefficient of the pore network model. Finally, based on the pore network model, the in-plane permeability of three fabrics was predicted. The results showed that the error in predicting the in-plane permeability of 2D fabric pore network model was less than 21.2%, and the improved hydraulic conductance algorithm reduces the prediction error by 27.1%.

Key words: composites, fiber-reinforced materials, pore network models, permeability, watershed segmentation

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