Research
HyFiVE
Hybrid joining technologies for joints in maritime applications - Subproject 8: Evaluation and optimization of established manufacturing methods with regard to their special application for the production of hybrid joints
Project number: 03SX511E
Project duration
From: 01.05.2020 To: 31.12.2023Description
The overall aim of this development project was to identify suitable adhesive-free joining technologies for different applications in shipbuilding and to develop, evaluate and demonstrate processes and methods for the special requirements of shipbuilding. The future use of such joints can further advance the use of lightweight materials in shipbuilding, shorten process times in the shipyard and enable completely new designs and concepts. The strategic integration of adhesive-free joints means that enormous approval hurdles are eliminated and the implementation of lightweight construction concepts in shipbuilding is simplified.
The individual objectives of the project were achieved through the implementation of semi-automatic fiber composite technologies for the production and processing of material and form-fit connections between metal and fiber composites. For this purpose, fiber-compatible connection geometries were developed in the first part of the project. The production of the joints was optimized as part of the project with regard to the properties of the joints. Another focus was on non-destructive characterization for subsequent quality control. It was shown that the connection geometries developed can be successfully transferred to flat component geometries and are therefore available for use in the production of large-area joints as an alternative to bonding. In a direct comparison with bonded joints, no joining method was able to achieve the strength of the bonded joints. However, by adapting the shape of the hybrid transition areas, a level can be achieved that compensates for the lower strengths. On the other hand, the in-situ production of the fiber composite component and connection point in one manufacturing step without downstream, complex process steps, which are inherent to adhesive bonding technology.Contact person:
