A Unified Approach to Determine Permeabilities of Fibre Preforms for Manufacturing Advanced Composite Structures

本文首次提出了一个统一的框架，利用基于纤维预制体微观、细观和宏观结构的均匀化理论，确定先进纤维复合材料中纤维预制体的三维渗透率。基于实验研究、理论分析和计算模型，建立了不同尺度下的渗透率量化机理模型。它提供了一种独特的技术来确定三维渗透性，用于使用基于树脂浸渍或灌注的各种新技术（如VARTM和RI）制造先进的复合材料结构。该项目的成果将填补先进复合材料结构在实际应用中的成本效益制造的基本知识的差距。

A unified framework is developed first time to determine 3-D permeabilities of fibre preforms for advanced fibre composites using homogenisation theories based on micro-, meso- and macro-structures of fibre preforms. Mechanistic models based on experimental studies, theoretical analyses and computational modelling are established to quantify permeabilities in different scales. It offers a unique technique to determine 3-D permeabilities for manufacturing advanced composite structures using various novel technologies based on resin impregnation or infusion, such as VARTM and RI. The outcomes of the project will fill the gap in the essential knowledge for cost-effective manufacturing of advanced composite structures in practical applications.