Journal Article10.1002/PC.750120607
The consolidation of commingled thermoplastic fabrics
108
TL;DR: A mathematical model of the consolidation process for commingled fabrics has been developed in this article, which predicts the variation of laminate thickness, fiber volume fraction, and void content during the fiber impregnation process as well as the time required to reach full consolidation.
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Abstract: Commingled fabrics composed of yarns containing both the reinforcement and the matrix in fiber form are an innovative preform for thermoplastic composite materials. The material is consolidated into a rigid structure by the application of heat and pressure. A mathematical model of the consolidation process for commingled fabrics has been developed. The model predicts the variation of laminate thickness, fiber volume fraction, and void content during the consolidation process as well as the time required to reach full consolidation. Materials composed of initially separate, commingled or cowoven fiber bundles are considered. The influence of fiber velocity induced by compaction on the flow of matrix is accounted for. An equivalence factor has been derived so that a one-dimensional flow analysis may be used to model the impregnation of elliptical bundles of varying aspect ratio. This permits an analytic solution to the governing equation for fiber bundle impregnation. The model was utilized to examine the influence of various material and processing parameters on consolidation behavior.
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Citations
Manufacturing of Thermoplastic Composites from Commingled Yarns-A Review:
TL;DR: The use of commingled yarns is one of the more promising routes for producing structural thermoplastic composites as discussed by the authors, and the textile processes available enable faster manufacturing and tailoring of the fiber architecture of preforms.
206
Impregnation technology for thermoplastic matrix composites
A.G. Gibson,Jan-Anders E. Månson +1 more
TL;DR: In this article, the authors present a review of the technology available for the impregnation of carbon and glass fibres with thermoplastic resins, and the key material factors influencing the achievement of imprognation are outlined.
142
Hybrid Yarns and Textile Preforming for Thermoplastic Composites
TL;DR: In the recent years, the use of textile structures made from high performance fibers is finding increasing importance in composites applications as mentioned in this paper and textile technology is of particular importance in the context of improving certain properties of composites like inter-laminar shear and damage tolerance apart from reducing the cost of manufacturing.
122
Thermoplastic Pultrusion: A Review.
TL;DR: In this article, the authors analyze the existing gap between thermoset and thermoplastic pultrusions in order to promote the development of the latter one and identify current shortcomings and issues, and propose future research and application directions.
117
Commingled yarn composites for rapid processing of complex shapes
TL;DR: In this paper, a consolidation model for unidirectional commingled yarn fabrics processed isothermally in a flat matched-die mold, is applied to three other processing techniques capable of producing complex-shaped composites.
113
References
•Book
Free and moving boundary problems
John Crank
- 01 Jan 1984
TL;DR: In this paper, a front-tracking method is used to solve moving boundary problems and an analytical solution of seepage problems is proposed. But this method is not suitable for solving free boundary problems.
2.2K
Consolidation Experiments for Laminate Composites
TL;DR: Consolidation experiments conducted on special prepregs made of constant viscosity oils and aligned graphite fibers reveal that, to a first approximation, the fiber network can be modelled as a nonlinear elastic network, and a model based on bending beam behavior is shown to accurately fit the data.
461
Liquid flow through aligned fiber beds
TL;DR: In this article, the influence of surface properties on the flow of fluids, including epoxy resin, through aligned glass and other fiber beds has been examined, and the observed flow rates were higher than those predicted from the Kozeny-Carman equation, and were influenced by the surface properties of the fluid used.
203
A model for resin flow during composite processing: Part 1—general mathematical development
TL;DR: In this article, a generalized three-dimensional model for resin flow during composite processing has been developed, based on a theory of consolidation and flow through a porous medium, which considers that the total force acting on a porosity medium is countered by the sum of the opposing forces, including the force due to the spring-like effect of the fiber network and the hydrostatic force of the liquid within the porous medium.
167
A model for resin flow during composite processing part 2: Numerical analysis for unidirectional graphite/epoxy laminates
TL;DR: In this article, numerical results are presented for resin flow during processing of unidirectional graphite/epoxy laminates, as well as resin loss, specific permeability, and resulting thickness changes, were computed to examine the effects of one and two-dimensional flow, initial laminate thickness, and various cure cycles.
101