An automated technique for manufacturing thermoplastic stringers in continuous length |
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Authors: | Sp Pantelakis E Baxevani U Spelz |
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Affiliation: | Laboratory of Technology and Strength of Materials, Department of Mechanical Engineering, University of Patras, Patras 265 00, Greece Dornier Luftfahrt GmbH, Friedrichshafen, Germany |
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Abstract: | In the present work an automated Continuous Compression Moulding Technique for the manufacture of stringers in continuous length is presented. The method combines pultrusion and hot-pressing. The technique is utilized for the production of L-shape stringers which are widely applied in aerospace constructions. The investigation was carried out on carbon reinforced PEEK (C/PEEK), as well as, for comparison, on the thermoplastic composites carbon reinforced polyethersulfon (C/PES), glass and carbon reinforced polyphenylene-sulfide (G/PPS, C/PPS) and Kevlar reinforced Polyamide 6 (K/PA 6). For the materials investigated the optimized process parameters for manufacturing the L-shape stringers were derived experimentally. To achieve this goal, the quality of the produced parts was controlled by using non-destructive testing techniques. Parts providing satisfactory quality were also tested destructively to measure their mechanical properties. The investigation results have shown the suitability of the technique to produce continuous length stringers. |
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