METHOD FOR MANUFACTURING AT LEAST ONE HOLE HOLE PROFILES FOR CONSTRUCTION PARTS

摘要

1. A method of manufacturing a structural part provided with at least one hollow profile (14) from a fibrous composite material with steps: a) manufacturing a workpiece (1) of a structural part from a fibrous composite material; b) heat treatment of the workpiece (1) of the structural part; c) closing the open ends (16, 18) of the hollow profile (14) with one plug (2, 3), respectively; d) checking the heat-treated workpiece (1) of the structural part with ultrasound using a test method without destroying the material; e) machining preparations (1) of the structural part to obtain the finished structural part; e) removal of the plugs (2, 3); moreover, the corresponding plug (2, 3) is made of closed-cell foam or has them at least in its outer contour. 2 . The method according to claim 1, characterized in that the closing of the open ends (16, 18) of the hollow profile (14) in step c) occurs with the help of a plug (2, 3), the foam of which is formed from polyethylene or mainly contains it. The method according to claim 1 or 2, characterized in that the closure of the open ends (16, 18) of the hollow profile (14) in step c) is performed using a plug (2, 3), the foam of which has a density of at most 30 kg / m, preferably from 10 kg / m to 20 kg / m, even more preferably less than 18 kg / m, particularly preferably 15 kg / m. The method according to claim 1 or 2, characterized in that the closing of the open ends (16, 18) of the hollow profile (14) in step c) occurs with a plug (2, 3), the foam of which has a pore size of at most 2 mm, preferably from 0.3 mm to 1.5 mm, even more preferably from 0.6 mm to 1.2 mm. 5. The method according to claim 3, characterized in that the closing of the open ends (16, 18) of the hollow profile (14) in step c) occurs with