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2012
Conference Paper
Titel
Boosting impact strength of thermoplastic semistructural composites via unidirectional tapebased fabrics and tailored laminates
Abstract
A 2-part study was conducted in 2011 to investigate what effects using polypropylene-(PP)-resin-impregnated unidirectional-(UD)-glass tapes-which were subsequently converted into semi-finished tape-based non-consolidated woven fabric and consolidated tailored laminate structures-would have on the impact performance of compression-molded composites produced via inline compounded direct-long-fiber thermoplastics (D-LFT). In the first part of the study, a variety of materials and layup combinations were molded in a flat test plaque tool, samples were cut, and impact properties were measured and compared against control/benchmark pure D-LFT plaques in different thicknesses. In the second part of the study, a more complex panel featuring tall thin ribs was molded to ensure the feasibility of such tailored D-LFT parts under conditions that better mimicked commercial molding operation. This paper will describe the study and the results that were obtained.