热压罐成型加筋板L形筋条纤维密实影响因素研究  

Experimental Research on Fiber Compaction of L-shaped Stiffeners in Stiffened Skins by Autoclave Process

作　　者：王雪明[1,2] 谢富原[1] 李敏[2] 张佐光[2] 

机构地区：[1]北京航空制造工程研究所,北京100024 [2]北京航空航天大学材料科学与工程学院,北京100191

出　　处：《航空材料学报》2011年第4期64-68,共5页Journal of Aeronautical Materials

基　　金：国家863项目(2006AA03Z556)

摘　　要：采用胶接共固化整体成型工艺制备了L形筋条,研究了模具配合、填充料、曲率半径、吸胶工艺等因素对L形筋条纤维密实和制造缺陷的影响规律,分析了缺陷形成机制。结果表明:厚度不均、架桥、富脂是L形筋条中存在的主要缺陷;采用软模辅助成型和加入适量填充料可改善筋条拐角区的压力分布,增大曲率半径和采用预吸胶工艺可降低拐角效应,从而可有效提高筋条纤维密实程度。L-shaped stiffeners were fabricated by integral co-bonding technique in the autoclave.This study focused on investigating the influence of tool assembly,filler,curvature radius and bleeding process on the fiber compaction and manufacturing defects of L-shaped stiffeners,with analyzing the formation mechanism of these defects.The results indicated that non-uniform thickness,bridging and rich resin were the main defects of L-shaped stiffeners.The fiber compaction was improved significantly on the condition that the pressure in corner section was increased by applying flexible tools and rolling unidirectional prepregs as fillers into the stiffener core,and that the corner effect was remarkably caused a decrease by increasing curvature radius and applying pre-bleeding process.All these results are the vital importance for declaring the formation mechanism of defects and enhancing integral manufacturing quality of composite stiffened skins.

关 键 词：复合材料 热压罐 加筋板 曲率半径 纤维密实 

分 类 号：TB332[一般工业技术—材料科学与工程]