Oblique crossing normal reinforcing 2.5D fabric and weaving method thereof

Abstract

The invention discloses oblique crossing normal reinforcing 2.5D fabric and a weaving method thereof. The fabric comprises a warp system, a weft system and a normal yarn system. The warp system is of a multi-layer warp structure. The number of warp layers can be designed according to required fabric thickness. The weft system is located on the left side or the right side of the warp system and is vertically introduced into the warp layers. The warp system and the weft system are mutually woven to form a layer-layer angle interlocking structure. The oblique crossing reinforcing 2.5D fabric is characterized in that normal yarn penetrates through the fabric thickness in the inclined direction along the diagonal direction of the thickness direction of lines where the normal yarn is located, one time of interweaving circulation of the normal yarn is completed after four machine moving steps, the normal yarn is arrayed in the outermost layer line of the fabric and the periphery of the warp, and the warps and the normal yarn are arrayed at intervals. The weaving method comprises the steps of initial yarn discharging, opening movement of warps for the first time, weft introduction for the first time, normal yarn movement for the first time, opening movement of the warps for the second time, introduction of the wefts for the second time, and normal yarn movement for the second time. The steps are conducted repeatedly.

Description

technical field [0001] The invention relates to a three-dimensional fabric weaving technology, in particular to a bias normal reinforced 2.5D fabric and a weaving method thereof. Background technique [0002] 2.5D fabric (layer-by-layer angle interlocking structure fabric) is a typical structure of three-dimensional woven fabrics. Through the interweaving of warp and weft yarns and interlocking fabric structure, the yarns of each system form an overall fabric structure with certain rules in space. . However, in the 2.5D fabric structure, the warp yarn system presents a relatively large curved shape. When subjected to a compressive load along the warp yarn direction, the bent warp yarn is more prone to instability and failure, making the warp compression resistance of the 2.5D fabric reinforced composite material Performance is poor. The phase-reinforced 2.5D fabric structure increases the impact resistance and damage tolerance of textile composites by adding a certain numb...

AI Technical Summary

Problems solved by technology

[0004] In the traditional normal reinforced 2.5D fabric structure, the normal yarn system and the warp and weft yarn system are 90° perpendicular to the thickness direction of the fabric, but when designing and producing a high-thick three-dimensional prefabricated structure, only the vertical yarns that penetrate the thickness are arranged The system can no longer meet the mechanical performance requirements of the components

Images