PLASTIC STRUCTURAL ELEMENT WITH INSERTS

摘要

Inserts of metal 13 in the plastic 11 of the plastic structural element 57 are coated with a coupling layer 12 of fibre-reinforced plastic, which reduces the abrupt change in stiffness and/or coefficient of thermal expansion at the joining interfaces in the metalplastic composite. By altering the volume fraction of fibres and/or by means of different orientation of the fibre layers within the coupling layer (12), a gradual change in the Emodulus and the thermal expansion coefficient are produced, as a result of which abrupt changes in these values at the composite interfaces can be avoided. The sudden change in stiffness between the plastic material 11 and the metal insert 13 is also reduced by reducing the stiffness of the insert 13, which again is achieved by specific choice of shape. Preferred, in particular, is a finger-shaped fanning out of the insert 13 in the plastic material 11.