Project Details
Projekt
Fractal interface design for defined adjustment of the interlaminar strength of metal-thermoplastic-composites
Subject Area
Coating and Surface Technology
Metal-Cutting and Abrasive Manufacturing Engineering
Metal-Cutting and Abrasive Manufacturing Engineering
Term
since 2021
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 494736555
Multi-material concepts, in which two or more different materials are joined together, represent a particularly viable approach to the production of highly stressable, lightweight components. Thermal joining in combination with suitable surface conditioning represents a technologically advantageous approach to joining both groups of materials together despite their low tendency to form chemical bonds. The surface microstructure of the metal surface is of central importance for the achievable interlaminar strength of the interface. The suitability of the fractal geometry for describing the strength of aluminium-polyamide 6 composites has been successfully demonstrated in our own preliminary work.The aim of the project is to validate the hypothesis that the analysis of the surface microstructure based on fractal parameters is suitable for the relative strength prognosis for metal-thermoplastic composites and that on this basis and with corresponding algorithms to be researched, the surface microstructure can be specifically designed. The experimental investigation of the theoretical assumptions is realized by means of the new, chip-forming manufacturing process UVADC, which is characterized by the necessary freedom of design across scales and in which the chip remaining on the component surface is used as an adhesion-generating structural element. As a result of the project, the knowledge of basic relationships to mechanical adhesion in metal-thermoplastic composites will be gained as well as a methodology for the targeted design and production of the microstructure of the metal surface.
DFG Programme
Research Grants
