For this scope, a frequency sensitive viscous-type damper is used. For a high-frequency needle motion, i.e. a fast power transmission, the viscous-type damper is stiff ensuring a good penetration of the needle in the non-crimp fabrics. For slow changes of the thickness in the direction of the transport, one can move the damper with significantly less resistance. Therefore no complex active control and setting of the height of the pillar bar are necessary.
The process described increase significantly the productivity of the production process of preforms and constitutes therefore a basis for the serial production of fiber composite components. Furthermore this technology can be integrated in an existing chain process in order to upgrade it.
On behalf of the RWTH Aachen, PROvendis offers the license to the technology and the possibility to establish a scientific cooperation for further development.