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

基于纤维预制体微观、细观和宏观结构的均匀化理论，首次建立了先进纤维复合材料预制体三维渗透性能的统一框架。在实验研究、理论分析和计算建模的基础上，建立了定量不同尺度渗透率的机理模型。它提供了一种独特的技术来确定3d渗透率，用于使用各种基于树脂浸渍或灌注的新技术（如VARTM和RI）制造先进的复合材料结构。该项目的成果将填补在实际应用中具有成本效益的先进复合材料结构制造的基本知识的空白。

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.