The permeability characteristics of dry fiber preforms manufactured using automated dry fiber placement

R. A. Alia, Rehan Umer, X. Zeng, S. Rao, W. J. Cantwell

Research output: Contribution to conferencePaperpeer-review

Abstract

Automated fiber placement (AFP) preforms are especially attractive for applications in aerospace and marine industries. However, there are various challenges in predicting the performance of the preform that are associated with the complexity of the structure. The work presented here aims towards gaining on understanding of the permeability characterization of dry fiber placement preforms. Initially, a numerical analysis of a simplified dry tape preform model, with the focus on the through-thickness permeability has been undertaken. Geometrical models consisting of the flow channels of the carbon dry tape preform are created and Computational Fluid Dynamics (CFD) simulations are then executed using the commercial code ANSYS/CFX to obtain the predicted permeability characteristics of the preform. An XCT scan conducted on the preform revealed that the gap sizes are irregular throughout the preforms. In the final part of this study, an experimental investigation of the through-thickness permeability is presented. The CFD predictions for the permeability of the preform are compared with the experimental data.

Original languageBritish English
StatePublished - 2017
Event21st International Conference on Composite Materials, ICCM 2017 - Xi'an, China
Duration: 20 Aug 201725 Aug 2017

Conference

Conference21st International Conference on Composite Materials, ICCM 2017
Country/TerritoryChina
CityXi'an
Period20/08/1725/08/17

Keywords

  • Automated dry fiber placements
  • Finite elements
  • Permeability
  • Preform

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