GAS TRANSPORT IN PREPREGS : MODEL AND PERMEABILITY EXPERIMENTS
GAS TRANSPORT IN PREPREGS : MODEL AND PERMEABILITY EXPERIMENTS
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预浸料中的气体传输：模型和渗透性实验
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
A. Poursartip
中科院分区：
文献类型：
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作者：
A. Arafath;G. Fernlund;A. Poursartip
控制空隙和孔隙率在处理复合结构时很重要[1]，因为它们对层压材料的机械和物理性能有负面影响[2，3]。在航空航天应用中，通常存在允许的孔隙率的量的上限，以确保层压材料满足强度规格。层压材料中的空隙量取决于许多因素的相互作用，包括：预浸料类型（化学性质、粘性、纤维结构、形态）、铺层方向、铺层终止、铺层方法、减积、层压材料尺寸和形状、详细几何形状（曲率和半径）、工具（凸形或凹形）、装袋细节和工艺周期（温度、真空和压力）。虽然在文献中有几个理论关于个别现象，如空洞的增长和溶解，这个问题是复杂的，尚未完全理解。
Controlling voids and porosity is important when processing composite structures [1] as they have a negative effect on mechanical and physical properties of a laminate [2,3]. In aerospace applications there is often an upper limit on the amount of porosity allowed to ensure that the laminate meets strength specifications. The amount of voids in a laminate is governed by the interaction of many factors including: type of prepreg (chemistry, tack, fibre architecture, morphology), ply orientation, ply terminations, layup method, debulking, laminate size and shape, detailed geometry (curvature and radii), tooling (male or female), bagging details, and process cycle (temperature, vacuum, and pressure). Although there are several theories in the literature about individual phenomena such void growth and dissolution, the subject is complex and not yet fully understood.