In order to solve the product quality problems of R-angle internal defect and foam core material concavity,this paper studies the manufacturing process with female mold of mixed sandwich composite material with large core to lami-nate ratio.This paper observed and analyzed the typical structures of R-angle defect which in the cutted and polished R-angle area using an optical microscope.Afterwards,this paper conducted comparative experiments on prepreg,on R-angle assisted compaction mold,and honeycomb stabilization experiments to analyze the principles of defect generation and explore methods for eliminating internal defects in R-angle.In addition,this paper also studied the compression deformation of foam core material under the commonly used composite molding pressure,and explored the method of vacuum bagging the foam core and increasing the thickness of the protective shell to solve the problem of its concave deformation.Through the a-bove research,this paper has formed an optimized process for manufacturing mixed sandwich composite materials with large core to laminate ratio using the female mold,and eliminated the internal defects of the R-angle,solved the problem of the concave deformation of foam core.
sandwich composite materialsmixed core materialshigh ratio of core to laminateforming with female mold
维普
万方数据
