In order to produce a functional component from a fiber preform, it must be impregnated with a matrix system, which is then cured. The institute has numerous established processes for introducing the required resin systems into the preforms. In addition to classic vacuum bag methods such as VARI and VAP®, which only require a single-sided mold, a 2k-RTM injection system and pressure pots can also be used. This requires more complex, double-sided molds, which are designed and built at the institute. Infiltration simulations are helpful in predicting the flow paths of the matrix system and thus optimizing the mold design. The institute has various ovens, air conditioning units, heating presses, and an autoclave for temperature control during and after injection. The latter can also be used to process common aerospace materials such as RTM6 or prepregs.
Vacuum Assisted Resin Infusion (VARI) process
Impregnation of a long beam
Wet compression molding tool
Research projects and further information
Initial situation / objective
- In this project, a fully integrated rotor drive shaft for an inductively electrically excited synchronous machine is to be developed and built.
- Contactless energy transmission as well as integrated cooling for the structure of a glass fibre-reinforced polymer (GFRP) drive shaft are to be realized.
Approach
- Development of a manufacturing concept for the GFRP rotor shaft
- Integration of the transmission coil
- Integration of the cooling system
Contact
Initial situation / objective
- The possibility of combining excellent optical properties, high impact resistance, and simultaneous weight reduction represents a potential that has so far rarely been exploited in fibre-reinforced composites.
- Structural components with transparency comparable to glass panes for safety applications are to be realized.
Approach
- Adjustment of the refractive indices of the polymer matrix and the reinforcing fibre
- Development of manufacturing technologies for achieving the highest surface quality
Contact
Initial situation / objective
- The development of a semi-automated bag infusion process is to be realized.
Approach
- Vacuum chamber machine adapted for composite manufacturing
- Determination of process parameters and achievable material properties
- Automated cutting and welding of carbon fibre tapes
Person responsible
Holger Ahlborn
Dipl.-Ing.Research Associate
Johannes Bauer
M.Sc.Research Associate