Influence of cathodic dip painting on the mechanical strength of material-adapted composite/metal joints

Abstract

The flow drill joining concept (FDJ) allows the load adjusted joining of continuous fiber reinforced thermoplastics (FRTP) and metallic sheets without auxiliary joining elements. As there is no scathe done to the fiber reinforcement, a radial realignment of the fibers leads to high-strength joints with high lightweight potential. In terms of their use in automotive lightweight construction, an important requirement for joining technologies is the resistance to temperature loads and chemicals, applied in the production processes, e.g., in vehicle lacquering. Therefore, force flux aligned FDJ-joints were investigated in cross tension and shear testings, after passing through a serial cathodic dip painting (CDP) process. The results show that the CDP-treatment does not adversely affect the quasi-static properties of the tested FDJ-joints, as they resist shear loads up to 2900 N and cross tension loads of about 1100 N, both, before and after the lacquering process.

Inverse Hybrid Laminate for Lightweight Applications

“…Continues thermoplastic fiber-reinforced polymers (TFRP) with metals in the form of hybrid laminates (HL) offer very good mechanical properties, good characteristics that increase the lightweight degree making it suitable for large scale production. This combination is very promising for automotive production industries [9][10][11].…”

Inverse Fiber Reinforced Polymer/Metal-Hybrid Laminates for Structural Lightweight Applications

“…In addition, various construction solutions can be applied to meet unique customer and entrepreneurs' requirements. In order to accomplish a cost-effective and mass-production-compatible structural part, an in-line production with continuous production is needed [14][15][16].…”