A model of multi-die thermoplastic pultrusion. (December 2022)

• Record Type: Journal Article
• Authors: Lessard, F.; Dubé, M.; Laberge Lebel, L.
• Is Part Of: Composites. Number 247(2022)
• Publication Date: 2022-12
• Subjects: Pultrusion -- Process modelling -- Microstructural analysis -- Thermoplastic resin; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2022.110319
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Multi-die thermoplastic pultrusion was showcased in previous studies to improve the impregnation quality of the pultrudate without significantly increasing the system's pulling force. Using carbon-fibre and polyetherimide (PEI) commingled fibre, this study compares different die sequences using three taper angles and different die outlet area progressions. A modelling algorithm is proposed to predict the pulling force and degree of impregnation of a multi-die system. Concurrently, a methodology is developed to adjust the material characteristics of the model based on microstructure observations and single-die performance. The model predicts the degree of impregnation and pulling force generated by the multi-die sequence. The quality of pultrudate was supported by density measurement and characterization of inter-laminar shear strength. Predicted pulling forces and degree of impregnation agreed with experimental data produced for the sequences tested. The experimental observations highlight a significant difference in pulling force and degree of impregnation relationship which hints at an optimization opportunity.