The technique does not exclude duroplastic matrices. This technologie enables a one-step process, that does not require prior drilling or surface pretreatment processes. The small scale form-fitting elements lead to a ductile and multi-step failure behavior that heralds a catastrophic total failure event. The matrix resing acts as a diffusion barrier and eliminates the risc of galvanic corrosion (in case carbon fibers are used). Bearing stress and stress concentrations are avoided, since holes and wide joining elements are not necessary.
Different designs for the metallic inserts have been investigated and tested. Among them the best performances so far have been achieved through the electrical resistance welding on metallic pins or metallic grids.
The invention will be further developed in the framework of an AiF project with the support of industrial partners.
A patent application has been filed in Germany.
On behalf of the RWTH University, PROvendis is seeking a partner for further development in view of funding and licensing the technology.