Preforms with large complex geometry, for example, body parts for the automotive industry, are consisted into multiple elements – so-called sub-preforms. Hereby the sub-preforms can be adjusted to different local load cases but joining of these sub-preforms also raises challenges. The preform joints are decisive to the mechanical properties of the final component. The state-of-the-art joint, a single lap, results in a variation of wall thickness with local redirection of fibre orientation. In this paper, the influence of alternative joints of embroidered fabrics is analysed regarding the resulting mechanical properties of the part. The built test specimen contains different preform joints with different process-relevant parameters. Such as gaps between the sub-preforms, to analyse the influence on the mechanical performance. To reveal the various defects like voids, air pockets and to validate the fibre orientation, computer tomography (CT) investigation was performed on the built plates. In addition, the influence in mechanical properties was also analysed. The overlapping is analysed with tensile strength test according to DIN EN ISO 527-4.

具有复杂几何形状的预成型件，例如汽车行业的车身零件，被分成多个元素–所谓的子预成型件。因此，可以将子预成型件调整为不同的局部载荷工况，但是这些子预成型件的连接也带来了挑战。预成型接头对最终零件的机械性能起决定性作用。最先进的接头（单圈）可随着纤维取向的局部改变而改变壁厚。在本文中，针对零件的最终机械性能，分析了绣花织物的其他接缝的影响​​。所构建的试样包含具有不同工艺相关参数的不同瓶坯接头。如子瓶坯之间的间隙，以分析对机械性能的影响。为了揭示各种缺陷，如空隙，气穴并验证纤维取向，在已加工的板上进行了计算机断层扫描（CT）研究。另外，还分析了对机械性能的影响。根据DIN EN ISO 527-4，通过拉伸强度测试分析重叠。