复合材料科学与工程Issue(1)：74-81,8.DOI:10.19936/j.cnki.2096-8000.20260128.011
考虑纬斜的三维机织圆筒预制体细观结构表征
Microstructure characterization of 3D woven cylinder preform with weft skew considered
摘要
Abstract
Micro-computed tomography(Micro-CT)was employed to elucidate the actual meso-scale archi-tecture of 3D woven angle interlock cylinder preforms.A detailed analysis was conducted to ascertain the cross-sec-tional geometry and the spatial arrangement of yarns within each system.It was observed that the weft skew phenom-enon occurred during the fabrication process of the cylinder preform.Under the premise that the cross-sectional pro-files of warp and weft yarns are rectangular and lens-shaped,respectively,a geometric model for a 3D woven cylin-der fabric exhibiting weft skew has been formulated.This model delineates the interdependencies among yarn param-eters,fabric characteristics,and the structural dimensions of the cylinder preform.The model's accuracy has been quantified,with an error margin of-1.958％.The cylindrical specimen was meticulously prepared for subsequent a-nalysis.Analysis of the findings revealed that the weft yarn skew typically ranges from 30° to 50°,a variance that is significantly influenced by the weft density.Notably,the skew increases with a higher weft density.These insights provide crucial technical guidance for the process design of 3D woven cylinder prefabrication.关键词
三维机织/微计算机断层扫描技术/细观结构/纬斜/几何模型/复合材料Key words
three-dimensional weaving/Micro-CT/microtructure/weft skew/geometric model/composites分类
通用工业技术引用本文复制引用
胡敬爱,焦亚男,张一帆,段静静..考虑纬斜的三维机织圆筒预制体细观结构表征[J].复合材料科学与工程,2026,(1):74-81,8.基金项目
国家重点研发计划(2023YFB3709800) （2023YFB3709800）
