当前位置: X-MOL 学术Appl. Compos. Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Yarn Damage Conditions Due to Interactions During Interlock Weaving Process: In-situ and In-lab Experiments
Applied Composite Materials ( IF 2.3 ) Pub Date : 2021-08-07 , DOI: 10.1007/s10443-021-09950-7
Julie Walther 1 , Carole Bessette 1, 2 , Mathieu Decrette 1 , Michel Tourlonias 1 , Marie-Ange Bueno 1 , Jean-François Osselin 1 , François Charleux 3 , Dominique Coupé 2
Affiliation  

For some severe applications, pieces are made in composite materials with woven fabrics reinforcements: interlock. High yarn density and specific weaving pattern can slow the production speed because of yarn damages. The purpose of this study is to identify conditions causing warp yarn damages during dense weaving in terms of weaving sequence, interlacing and yarn structure and morphology. Two approaches are followed in-situ on the weaving machine and in-lab on a tribometer designed for this study. An instrumented 3D interlock machine is used in order to measure yarn tension and contact force during weaving. A specific sequence with different kinds of yarn intercrossings is applied and the more aggressive cases in terms of yarn tension and contact force are identified. From the data acquired on the weaving machine, a specific tribometer reproducing the intercrossing between two yarns with different yarn tension and contact force has been developed. The results obtained from weaving and friction tests show the source of aggressive conditions: i) the Jacquard mechanics: higher tension and contact force are obtained while yarn has a raising movement in comparison to a lowering movement, ii) the intercrossing sequence: a single yarn in movement with its neighbours having an opposite movement, iii) yarn structure and morphology: a coarse yarn and/or with twist, because it is bulky however it also have a better cohesion, therefore a compromise has to be found, iv) normal load increases yarn damage, and decreases the coefficient of friction, however the effect of yarn tension is not determined.



中文翻译:

由于互锁编织过程中的相互作用而导致的纱线损坏条件:现场和实验室实验

对于一些严苛的应用,部件由复合材料制成,并带有机织织物增强材料:互锁。由于纱线损坏,高纱线密度和特定的编织图案会降低生产速度。本研究的目的是确定在织造顺序、交织和纱线结构和形态方面导致密织过程中经纱损坏的条件。两种方法在织机上进行原位测量,在实验室内使用为本研究设计的摩擦计。使用仪器化的 3D 联锁机来测量织造过程中的纱线张力和接触力。应用了具有不同类型纱线交叉的特定序列,并确定了纱线张力和接触力方面更具侵略性的情况。从织机上获取的数据,已经开发出一种特殊的摩擦计,可以再现具有不同纱线张力和接触力的两种纱线之间的交叉。从编织和摩擦测试中获得的结果显示了侵蚀性条件的来源:i) 提花力学:与下降运动相比,当纱线具有上升运动时获得更高的张力和接触力,ii) 交叉序列:单根纱线在与其相邻的运动相反的运动中,iii) 纱线结构和形态:粗纱和/或加捻,因为它体积大,但也有更好的内聚力,因此必须找到折衷方案,iv) 正常负载增加纱线损伤,降低摩擦系数,但纱线张力的影响尚未确定。

更新日期:2021-08-10
down
wechat
bug