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Experimental investigation of frictional behavior in a filament winding process for joining fiber-reinforced profiles

机译：连接纤维增强型材的长丝缠绕过程中摩擦性能的实验研究

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Filament winding with a rotating ring allows the joining of hollow, fiber-reinforced profiles. To avoid fiber slippage and to be able to produce wound connections, the curvature of the winding path as well as the friction between mandrel and fibers must be considered. In this paper, the frictional behavior of dry carbon fiber tows is investigated in the context of filament winding for joining profiles. Friction experiments using a sled and filament-winding experiments are performed in order to examine the interrelationship between both setups. Furthermore, the influence of parameters, such as fiber orientation and contact surface, are analyzed. Regarding the frictional behavior of dry carbon fibers, it is found that the perpendicular slippage of the tow is governed by different mechanisms. Therefore, two different modes of slippage can be distinguished, depending on whether the tow's limit of adhesion is dominated by the friction between the mandrel surface and the bottom layer of filaments, or by the coherence of filaments within the tow.
机译：带有旋转环的细丝绕组允许连接空心的纤维增强型材。为了避免纤维打滑并能够产生缠绕连接，必须考虑缠绕路径的曲率以及心轴与纤维之间的摩擦。在本文中，研究了干碳纤维丝束在细丝缠绕情况下的摩擦性能。为了检查两种设置之间的相互关系，进行了使用雪橇的摩擦实验和长丝缠绕实验。此外，分析了诸如纤维取向和接触表面之类的参数的影响。关于干碳纤维的摩擦性能，发现丝束的垂直滑移是由不同的机理控制的。因此，取决于丝束的粘附极限是由心轴表面与细丝底层之间的摩擦力还是由丝束内细丝的凝聚力所主导，可以区分两种不同的滑动方式。

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