| Abstrakt: |
Continuous production of tailored hybrid structures out of steel and carbon fiber reinforced thermoplastic (CFR-TP) by roll forming represents a promising approach for the automotive industry, due to the high production rates and comparatively low costs. The in-situ fusion bonding, which is the joining by melting the thermoplastic matrix on the steel surface, enables a significant reduction of process steps. Within a continuous roll forming manufacturing line for multi-material parts the adhesion between steel and CFR-TP is one important challenge, due to the high sensitivity of the process on the heating and cooling of both materials. The continuous fusion bonding process has a high complexity and is subject to varied disturbance values like temperature or speed fluctuations. Therefore within this investigation, the specimens are joined sequentially by inductive heating using comparable parameters like e.g. heating or cooling rates in order to generate a basic understanding of the influence of individual process parameters. The test setup including the inductive heating technology is presented. With regard to the influence of individual process parameters, heating as well as cooling rates and dwell times are considered. The evaluation is carried out by analytical and mechanical testing, i.e. DSC-measurements or lap shear tests. [ABSTRACT FROM AUTHOR] |
