Transverse compaction of 2D glass woven fabrics based on material twins - Part II: Tow and fabric deformations

被引:23
作者
Huang, W. [1 ,2 ]
Causse, P. [1 ]
Hu, H. [2 ]
Belouettar, S. [3 ]
Trochu, F. [1 ]
机构
[1] Polytech Montreal, Stn Ctr Ville, Dept Mech Engn, Res Ctr High Performance Polymer & Composite Syst, POB 6079, Montreal, PQ H3C 3A7, Canada
[2] Wuhan Univ, Sch Civil Engn, 8 South Rd East Lake, Wuhan 430072, Peoples R China
[3] Luxembourg Inst Sci & Technol, 5 Ave Hauts Fourneaux, L-4362 Esch Sur Alzette, Luxembourg
基金
加拿大自然科学与工程研究理事会; 中国国家自然科学基金;
关键词
Transverse compaction; Continuous fiber composites; Textile reinforcements; X-ray tomography; Material twin; DIGITAL IMAGE CORRELATION; CARBON; REINFORCEMENTS; PERMEABILITY; COMPOSITES; VOIDS; MODEL;
D O I
10.1016/j.compstruct.2020.111963
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
In Liquid Composite Molding (LCM), compaction of the reinforcement occurs during several stages of the entire process, including before and during resin injection, which leads to significant deformations of fibrous architecture. This article aims to study by X-ray microtomography the mesoscopic deformations of 2D glass woven fabrics under transverse compaction for a range of fiber volume fractions encountered in high performance composite applications. In Part I, material twin geometric models of dry fibrous reinforcements were created at different levels of compaction to study the evolution of the morphological features and displacements of fiber tows when compressed during processing. Part II proposes a new approach to track the motion of contour points on cross-sections of fiber tows during compaction. This will allow investigating more precisely the behavior of fiber tows by calculating their mesoscopic deformations. In particular, it will also be possible to study in more details the effect of contacts between tows and of nesting between fabric plies on the mesoscopic deformations of textile preforms during compression.
引用
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页数:8
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