Research on the 3D Woven Process with Multiple Weaving Needles for I-shaped Composite

Abstract

The experimental studies of I-shaped composite preform woven by 3D woven process with multiple weaving needles were carried out in this paper by building 3D structural model of heterotypic composite, divisional design of 3D structural model and weaving route, and manufacturing of that heterotypic composite preform. The results show that the forming precision and quality of the I-shaped composite preform were guaranteed by divisional design of 3D structural model and weaving route, with the dimensional absolute error being controlled within 1.5mm and the fiber volume fraction increasing to 50.9%. Furthermore, the I-shaped composite preform by the 3D woven process with multiple weaving needles shows good isotropic characteristic in y and z direction.