Characterisation and optimisation of wrinkling during the forming of tufted three-dimensional composite preforms
Characterisation and optimisation of wrinkling during the forming of tufted three-dimensional composite preforms
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DOI：
10.1016/j.compositesa.2019.105651
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发表时间：
2019-12-01
影响因子：
8.7
通讯作者：
Liu, Lingshan
中科院分区：
文献类型：
--
作者：
Shen, Hao;Wang, Peng;Liu, Lingshan
本文旨在量化和优化具有复杂结构的纺织增强体，特别是通过簇绒形成的全厚度增强体。为了优化成形工艺，使用不同的簇绒位置和图案并相互比较。为了量化和评估成形过程，特别是，起皱现象，基于运动的结构（SFM）的图像分析方法。用于三维重建的建模数据是从样品周围拍摄的一堆照片中提取的。根据褶皱形状与参考形状的偏差来识别褶皱。不同的指标，使用和讨论，以获得一个一般的看法，扭曲的严重程度。褶皱图案主要取决于簇绒分布，簇绒分布应与冲头形状相对应，以最大限度地减少某些特定区域的褶皱。否则，不适当的簇绒会在一定程度上导致起皱的严重程度。
The present paper aims to quantify and optimise the textile reinforcements forming with a complex structure, in particular, the through-thickness reinforcements by tufting. To optimize the forming process, different tufting locations and patterns are used and compared to each other. To quantify and evaluate the forming process, in particular, the wrinkling phenomenon, a Structure from Motion (SFM) based image analysis methodology is proposed. The modelling data for three-dimensional reconstruction are extracted from a stack of photographs taken around the samples. Wrinkles are identified from the deviation of the wrinkled shape from a reference shape. Different indicators are used and discussed to obtain a general view of wrinkling severity. Wrinkle pattern is critically dependent on tufting distribution, which should correspond to the punch shape to minimize wrinkles in some specific areas. Otherwise, inappropriate tufting will give rise to wrinkling severity to some extent.