Tubular braided composites combine manufacturing technologies from textiles and composites industries. The design of the reinforcing textile structure plays a significant role in the mechanical characteristics of the final composite. Twisted yarns have shown improved strength over untwisted ones, even for continuous multifilament yarns where twist is not necessary for the manufacturing process. In this work, a manufacturing process is piloted in which twisted yarns are introduced to the braiding process. Static testing is then done to determine the impact of yarn twist on the stiffness and strength. Finally, the Ramberg–Osgood model is adapted to the results in order to provide a descriptive model for the behavior of tubular braided composites beyond the proportional limit.

中文翻译：

---

通过加入低角纱线捻度提高二维编织复合材料的拉伸性能：生产、实验验证和建模

管状编织复合材料结合了纺织和复合材料行业的制造技术。增强织物结构的设计对最终复合材料的机械特性起着重要作用。加捻纱线比未加捻纱线显示出更高的强度，即使对于制造过程中不需要加捻的连续复丝也是如此。在这项工作中，试验了一种制造过程，其中将加捻纱线引入编织过程。然后进行静态测试以确定纱线捻度对刚度和强度的影响。最后，Ramberg-Osgood 模型适用于结果，以便为超出比例极限的管状编织复合材料的行为提供描述性模型。