Transverse permeability of dry fiber preforms manufactured by automated fiber placement

Aziz, A. R. and Ali, M. A. and Zeng, X. and Umer, R. and Schubel, P. and Cantwell, W. J. (2017) Transverse permeability of dry fiber preforms manufactured by automated fiber placement. Composites Science and Technology, 152. pp. 57-67. ISSN 0266-3538

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This work presents a correlation between the transverse permeability of a preform and the process variability of the automated dry fiber placement manufacturing technique. In this study, an experimental and numerical analysis of the dry tape preform, with a focus on its through-thickness permeability, has been undertaken. Geometric models, containing flow channels of two different width dry tape carbon preforms, have been created in the TexGen modeller. A Computational fluid dynamics (CFD) simulation has been undertaken to obtain the predicted through-thickness-permeability of the dry tape preform. A parametric study on the effect of different dry tape gap sizes on the permeability of the preform is presented. An in-situ compaction study, carried out in an X-CT machine, revealed that the gap sizes were irregular throughout the manufactured preforms. In addition, an experimental investigation of the through-thickness permeability, which is based on a saturated flow condition at a thickness corresponding to full vacuum pressure, is also presented. The permeability prediction based on the X-CT re-constructed geometric model has been validated using the experimental data. A further parametric study has revealed that the process variablity in automated dry fibre placement influences the through-thickness permeability by a factor of upto 5.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty / Department / School: No Faculty
Date Deposited: 09 Nov 2017 03:34
Last Modified: 27 Apr 2018 00:39
Uncontrolled Keywords: Modeling; Automated fiber placement; Layered structures; Resin flow
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0901 Aerospace Engineering > 090102 Aerospace Materials
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
Identification Number or DOI: doi10.1016/j.compscitech.2017.09.011

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