METHOD FOR PRODUCING A STRUCTURAL ELEMENT CONSISTING OF A FIBRE-COMPOSITE HOLLOW PROFILE AND LOAD-INTRODUCING ELEMENT, AND STRUCTURAL ELEMENT

摘要

The invention relates to a method for producing structural elements (14) comprising a hollow profile (1) consisting of plastic reinforced by continuous fibres, with a thermosetting matrix, having a softening temperature lower than the cross-linking temperature, and at least one load-introducing element (15), and to a structural element (14) produced by the method, comprising a hollow profile (1) consisting of plastic reinforced by continuous fibres, with a thermosetting matrix, having a softening temperature lower than the cross-linking temperature, and at least one load-introducing element (15), the hollow profile (1) and load-introducing element (15) being positively interconnected. The method according to the invention comprises at least the following steps: a) providing a blank of a hollow profile (1) consisting of plastic (3) reinforced by continuous fibres on a liner (2), the liner (2) forming the inner lateral surface of the hollow profile (1), and the hollow profile (1) being impregnated by heating to a temperature which is equal to, or higher than, the softening temperature of the matrix material (9) and lower than the cross-linking temperature of the matrix material (9); b) removing the liner (2) in the inner region (17) of the hollow profile (1) provided for the load introduction; c) arranging a load-introducing element (15) on the inner region (17) of the hollow profile (1) provided for the load introduction; d) consolidating and functionalising the structural element (14) consisting of the hollow profile (1) and the load-introducing element (15) by heating the structural element (14) to a temperature which is equal to, or higher than, the cross-linking temperature of the matrix material (9), and applying a radially inwardly acting pressure to the structural element (14), the hollow profile (1) being moulded onto the load-introducing element (15) in a form-fitting manner.