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Issues Related to Processability during the Manufacture of Thermoplastic Composites Using On-Line Consolidation Techniques

Department of Mechanical Engineering University of Hawaii at Manoa Honolulu, HI 96822

The on-line consolidation of thermoplastic composites is a relatively new technology that can be used to manufacture composite parts with complex geometries. The localized melting/solidification technique employed in this process can reduce the residual stresses and allow for improved dimensional stability and performance. An additional advantage of this technique is the elimination of the curing steps which are necessary in the processing of thermoset-matrix composites. This article presents the effects of process ing parameters on processability in on-line consolidation of thermoplastic composites for tape-laying and filament-winding processes employing anisotropic thermal analyses. The results show that the heater size, preheating conditions, and tow thickness can signifi cantly affect the processing window which, in turn, affects the production rate and the quality of the parts.

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