This paper describes a manufacturing method for the ribs of a cylindrical anisogrid composite structure without an outer skin. This research presents two direct compression techniques for the ribs during wet filament winding with T700 continuous carbon-fiber tows. In addition, the strength of the helical rib manufactured using the proposed compression process was compared to that of the manufactured rib that did not use the compression process. The average compressive strength of the helical rib manufactured using the proposed methods is 394 Mpa and 247 MPa according to the failure mode, respectively. Although the ribs manufactured using the proposed method did not show increase in strength, decreases in the standard deviation for both compressive failure modes (66% and 21% of the structure made without the proposed compression method) and was observed. Thus, the proposed compression techniques resulted in compression strength stabilizing thanks to decreasing void content. Furthermore, structural stiffness was indirectly evaluated and it was found that the improvement was over 150%.

本文介绍了一种不带外皮的圆柱形异格栅复合结构肋的制造方法。这项研究提出了使用T700连续碳纤维丝束在湿丝缠绕过程中对肋骨的两种直接压缩技术。另外，将使用建议的压缩工艺制造的螺旋肋的强度与不使用压缩工艺的制造肋的强度进行比较。根据失效模式，使用建议的方法制造的螺旋肋的平均抗压强度分别为394 Mpa和247 MPa。尽管使用建议的方法制造的肋骨没有显示出强度增加，两种压缩破坏模式的标准偏差均减小（未采用建议的压缩方法制成的结构的标准偏差为66％和21％），并且可以观察到。因此，由于减少的空隙含量，所提出的压缩技术导致压缩强度稳定。此外，间接评估了结构刚度，发现改善超过150％。