A process for the manufacture of structural elements from load application element and Fiber-reinforced plastic hollow profile and structural elements

The invention relates to a process for the production of structural elements (1) of load application element (3) and the fiber-plastic-composite hollow profile (2) with a thermoplastic matrix material and structural elements, said method comprising the steps of - inserting the at least one undercut (6) provided load application element (3), in the fiber-plastic-composite hollow profile (2) to form a structural element semifinished - localized heating of the fiber-plastic-composite hollow profile (2) to the deformability of the fiber-plastic-composite hollow profile (2) in the region of the undercut (6) of the load application element (3), - insertion of the structural element in a semi-finished tool, the above-mentioned method steps are carried out differently either in their sequence, - injection molding of the deformable Fiber-reinforced plastic hollow profile (2) (with a flowable molding compound (41) in the tool in the area of ​​the rear section of the load application element (3) for forming the fiber-plastic-composite hollow profile of at least an undercut (13) 2 ), the formed undercuts (13) fiber-reinforced plastic hollow profile (2) fit (in the undercuts 6) of the load application element (3) are at least joined form-fit to each other, - solidification of the flowable molding compound (41) to at least one in the undercuts (13) of the fiber-plastic-composite hollow profile (2) to form a molded piece (4) and thus to the final structural element (1), - demoulding of the final structural element (1) from the tool.