Influence of forming path on stamping characteristics of Al/CFRTP/Al laminates
To improve the forming quality and forming accuracy of fiber metal laminates,the influence laws of different forming paths on the stamping characteristics of Al/CFRTP/Al laminates were studied.Springback angle measurement,micromorphology analysis and three-point bending test were conducted to study the influences of three different forming paths,which are sheet forming,forming and cu-ring and combined stamping,on the forming characteristics of fiber metal laminates U-shaped parts.The results show that the springback angle of the specimen prepared under combined stamping path is 1.34°.The carbon fibers in the direction of 0° both inside and outside the middle core layer are tensile fracture,and the maroscopic defects such as resin-starved and resin-rich areas and uneven thickness dis-tribution are formed.The springback angle of the specimen prepared under forming and curing path is 2.84°,and the carbon fibers are tensile fracture in the direction of 0° both inside and outside the middle core layer,the thickness distribution is uniform without macro-scopic defects,the comprehensive performance is good,and the forming quality is more controllable.
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