基于图像的单面针织物有效气体传输特性物理模型

IF 1.6 4区 工程技术 Q2 MATERIALS SCIENCE, TEXTILES
Leon Pauly, Lukas Maier, Ulrich Nieken, Goetz Theodor Gresser
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引用次数: 0

摘要

在许多工艺和应用中,纺织品的性能在很大程度上取决于流体传输,例如,水的面内分布以及水蒸气和空气的面内渗透。对针织织物的有效传输特性进行预测,可以改进开发工作流程,并将其用于新的应用领域。尤其重要的有效传输参数是渗透性和扩散传质。通常使用实验来确定这些参数。我们希望对纱线结构和编织规格如何影响这些特性进行深入研究,从而为特定应用量身定制针织物。我们在这方面的贡献是描述了一种预测单面针织物有效传质特性的一致工作流程。之所以选择单面针织物,是因为它们的花型最简单,而且广泛用于贴身服装。建议的方法包括用光学显微镜观察织物样本,然后通过自动图像处理算法确定相关几何参数。有了这些参数,就可以构建具有代表性的织物基本体积。为减少计算时间,将纱线作为有效介质建模。然后,利用代表性基本体积对透气性和水蒸气扩散传输进行数值预测。将预测的通过平面的气体传输特性与实验数据进行比较,以验证该方法。分析了六种不同的单面涤纶织物,它们具有不同的纱线结构和机号。比较结果表明,模拟和测量的传输特性非常吻合。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Physics-based modeling of the effective gas transport properties of single jersey knitted fabrics based on images
In many processes and applications, the performance of textiles relies heavily on fluid transport; for example, the in-plane distribution of water and the through-plane permeation of water vapor and air. Prediction of knitted fabrics’ effective transport characteristics can enhance development workflows and bring them to new applications. Effective transport parameters that are particularly important are the permeability and diffusive mass transfer. Usually, experiments are used to determine these parameters. It is desirable to conduct a thorough investigation into how yarn structure and knitting gauge influence these properties to tailor knitted fabrics for a particular application. Our contribution in this context describes a consistent workflow to forecast the effective mass transfer characteristics of single jersey fabrics. Single jersey fabrics have been chosen for they are the simplest patterning, and are widely used in body-near worn garments. The proposed approach involves visualizing fabric samples with a light microscope, and subsequently determining relevant geometric parameters through automated image processing algorithms. With these parameters in hand, a representative elementary volume of the fabric is constructed. The yarn is modeled as an effective medium to reduce calculation time. The representative elementary volume is then used for numerical predictions of air permeability and the diffusive water vapor transport. The predicted through-plane gas transport properties are compared with experimental data to validate the approach. Six different single jersey polyester fabrics were analyzed, with different yarn structures and machine gauges. The comparison shows a good agreement between simulated and measured transport properties.
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来源期刊
Textile Research Journal
Textile Research Journal 工程技术-材料科学:纺织
CiteScore
4.00
自引率
21.70%
发文量
309
审稿时长
1.5 months
期刊介绍: The Textile Research Journal is the leading peer reviewed Journal for textile research. It is devoted to the dissemination of fundamental, theoretical and applied scientific knowledge in materials, chemistry, manufacture and system sciences related to fibers, fibrous assemblies and textiles. The Journal serves authors and subscribers worldwide, and it is selective in accepting contributions on the basis of merit, novelty and originality.
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