Geometric modeling of meso-structure of laminate lined wrap twill woven prefabrication
In order to analyze the meso-structure of the laminated lining twill woven prefabrication,the yarn profile and direction of the composite materials were observed using Micro-CT.Based on the observation results of Micro-CT,the assumptions of rectangular liner warp cross section,rectangular jointed warp cross section,convex lens weft cross section,linear liner warp path,linear weft path and parabolic jointed warp path were put forward.The relationship between the thickness and fiber volume content of the prefabrication and fiber parameters was deduced,and the meso-structure model of the prefabrication was established.The variation of yarn cross-section variation coefficient,prefabrication thickness and fiber volume content were calculated by yarn width and thickness.In order to verify the accuracy of the model,two kinds of interlayer warp twill woven composites with the same structure and different fibers were prepared using aramid fiber and UHMWPE fiber as raw materials,and compared with the proposed prefabrication model.The results show that the theoretical and measured values are within the reasonable error range,the thickness error of the prefabrication is less than 1.5％,and the fiber volume error of the prefabrication is less than 1.5％.
laminated interleaved twill woven prefabricationmeso-structurethickness of prefabricationfiber volume content of prefabricationMicro-CT technology
万方数据
维普
