Investigation of innovative, high-strength threads in fiber reinforced plastic shafts and their notch-effect under rotating bending stress

纤维增强塑料（frp）制成的轴，由于其低密度和高刚度，在某些行业，例如造纸机和印刷机中已成功地取代了钢轴。玻璃钢轴的机械和热性能主要由纤维角度决定，从而使设计师能够控制这些性能。目前，用于玻璃钢轴的力传递元件由金属制成，并利用结构粘合剂或压配合来装配。这些解决方案是不可拆卸的，往往有助于整体重量的显着比例，从而限制了玻璃钢轴的使用，以特定的应用。本计画的目标是研究轻量化、可拆卸的传力元件，以使玻璃钢轴的优点能应用于更广泛的产业。电机主轴代表了一个示例应用，其中需要具有可拆卸力传输的轴。特别是机加工螺纹及其优化将是本次调查的主题。将有静态以及疲劳强度测试，以调查旋转玻璃钢轴的缺口效应。

Shafts made of fiber reinforced plastics (frp) have, due to their low density and high stiffness, suc-cessfully replaced steel shafts in certain industries, for example in paper and printing machines. The mechanical and thermal properties of frp shafts are predominantly determined by the fiber angle, thus giving the designer control over those properties. Currently force transmission elements for frp shafts are made of metal and are fitted utilizing struc-tural adhesives or press fits. These solutions are undetachable and often contribute a significant proportion of the overall weight, thus limiting the use of frp shafts to specific applications. Goal of this project is to investigate lightweight optimized, detachable force transmission elements, in order to make the advantages of frp shafts accessible for a wider range of industries. Motor spindles represent an example application where shafts with detachable force transmissions are needed. Especially machined threads and their optimization will be subject of this investigation. There will be static as well as fatigue strength testing to investigate the notch effect on rotating frp shafts.