To address the hole problem in the axial yam addition and subtraction process of 3D woven preforms,the axial yarn addition and subtraction process is studied,and a radially dispersed yarn adding and subtraction method is designed.The warp yarn addition and subtraction unit is 2 pieces,so that the warp addition and subtraction points are uniformly distributed along the axis of the cone and the thickness direction of the cross section,ultimately achieving a preform with no obvious hole defects,and this method is applicable to all 3D woven structures.
three-dimensional weavingpreformaxial dispersionyarn addition and subtractionprocess design
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