Out-of-autoclave(OoA) processing has the advantages of low cost,light weight and environmental protection,and has become a hot spot in the field of composite materials worldwide. This paper investigates the applicatio...Out-of-autoclave(OoA) processing has the advantages of low cost,light weight and environmental protection,and has become a hot spot in the field of composite materials worldwide. This paper investigates the application of OoA processing in the gondola of the AS700 civil manned airship. The production cost of gondolas is reduced by selecting low cost materials such as glass fiber,PVC foam and OoA processing. The porosity of parts is reduced and controlled at about 2% by optimizing the edge breathing of prepreg during curing. The maximum tensile strain of the glass fiber is 4 593 με;its maximum compressive strain is 3 680 με;and its maximum shear strain is4 884 με. The maximum Von Mises stress of the foam is 0.70 MPa. These settings all meet the margin requirement of safety. Finally,the ultimate load test of the gondola is carried out to verify the safety of the gondola structure. Our study presents critical parameters for the gondola design,including load,structure,strength,and manufacturing process test,and provides certain references for the design of similar products.展开更多
采用单面胶膜浸渍的方法制备非热压罐(Out of Autoclave,以下简称"OoA")预浸料。采用三种方法测定预浸料的浸渍度,通过预浸料的细观形貌、层压板孔隙率及力学性能,系统地分析了浸渍度对碳纤维增强复合材料(CFRP)质量的影响,22...采用单面胶膜浸渍的方法制备非热压罐(Out of Autoclave,以下简称"OoA")预浸料。采用三种方法测定预浸料的浸渍度,通过预浸料的细观形貌、层压板孔隙率及力学性能,系统地分析了浸渍度对碳纤维增强复合材料(CFRP)质量的影响,22%的浸渍度时性能最优。与OoA预浸料相匹配的固化工艺至关重要,通过无损检测、孔隙率、微观结构及力学性能对比分析,120℃/2 h作为第一阶段的固化工艺最适合,同时层压板热性能、力学性能与热压罐相媲美。展开更多
基金supported in part by China Special Vehicle Research Institute and the Priority Academic Program Development of Jiangsu Higher Education Institutions。
文摘Out-of-autoclave(OoA) processing has the advantages of low cost,light weight and environmental protection,and has become a hot spot in the field of composite materials worldwide. This paper investigates the application of OoA processing in the gondola of the AS700 civil manned airship. The production cost of gondolas is reduced by selecting low cost materials such as glass fiber,PVC foam and OoA processing. The porosity of parts is reduced and controlled at about 2% by optimizing the edge breathing of prepreg during curing. The maximum tensile strain of the glass fiber is 4 593 με;its maximum compressive strain is 3 680 με;and its maximum shear strain is4 884 με. The maximum Von Mises stress of the foam is 0.70 MPa. These settings all meet the margin requirement of safety. Finally,the ultimate load test of the gondola is carried out to verify the safety of the gondola structure. Our study presents critical parameters for the gondola design,including load,structure,strength,and manufacturing process test,and provides certain references for the design of similar products.
文摘采用单面胶膜浸渍的方法制备非热压罐(Out of Autoclave,以下简称"OoA")预浸料。采用三种方法测定预浸料的浸渍度,通过预浸料的细观形貌、层压板孔隙率及力学性能,系统地分析了浸渍度对碳纤维增强复合材料(CFRP)质量的影响,22%的浸渍度时性能最优。与OoA预浸料相匹配的固化工艺至关重要,通过无损检测、孔隙率、微观结构及力学性能对比分析,120℃/2 h作为第一阶段的固化工艺最适合,同时层压板热性能、力学性能与热压罐相媲美。
