A numerical study of variability in the manufacturing process of thick composite parts

M. Y. Matveev; J. P.H. Belnoue; O. J. Nixon-Pearson; D. S. Ivanov; A. C. Long; S. R. Hallett; I. A. Jones

doi:10.1016/j.compstruct.2018.09.092

A numerical study of variability in the manufacturing process of thick composite parts

M. Y. Matveev^*, J. P.H. Belnoue, O. J. Nixon-Pearson, D. S. Ivanov, A. C. Long, S. R. Hallett, I. A. Jones

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal)

4 Citations (Scopus)

148 Downloads (Pure)

Abstract

Consolidation of a prepreg layup to a target thickness is critical in order to achieve the required fibre volume fraction and dimensions in a composite part. Experiments show that different processing conditions lead to different levels of compaction and variability in the thickness. This paper presents an analysis of processing conditions and their effects on consolidation of thick composite components. A model that accounts for both percolation and squeezing flow is employed to study two toughened prepreg systems – IM7/8552 and IMA/M21. This paper analyses the significance of the process parameters on the thickness of prepregs and its variability. The analysis of different layups and processing conditions suggests several strategies to control target thickness and its variability. The IMA/M21 prepreg system was found to have lower variability due to its toughening mechanism. The presented results provide a better understanding of the composite manufacturing and can be used to provide an informed choice in design for manufacture of composite structures.

Original language	English
Pages (from-to)	23-32
Number of pages	10
Journal	Composite Structures
Volume	208
Early online date	25 Sep 2018
DOIs	https://doi.org/10.1016/j.compstruct.2018.09.092
Publication status	Published - 15 Jan 2019

Keywords

Prepregs
Process simulation
Variability

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10.1016/j.compstruct.2018.09.092

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This is the accepted author manuscript (AAM). The final published version (version of record) is available online via Elsevier at https://doi.org/10.1016/j.compstruct.2018.09.092 . Please refer to any applicable terms of use of the publisher.
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Projects

1 Finished

DefGen: Defect Generation Mechanisms in Thick and Variable Thickness Composite Parts - Understanding, Predicting and Mitigation

Hallett, S. R., Partridge, I. K., Potter, K. D., Long, A., Skordos, A. & Ivanov, D.

1/07/13 → 1/07/17

Project: Research

Datasets

A numerical study of variability in the manufacturing process of thick composite parts

Hallett, S. R. (Creator), Nixon-Pearson, O. (Creator), Ivanov, D. (Creator) & Belnoue, J. P. (Creator), University of Bristol, 1 Oct 2018

DOI: 10.5523/bris.jsxvn0aq2hgt2afxuk17633t0, http://data.bris.ac.uk/data/dataset/jsxvn0aq2hgt2afxuk17633t0

Dataset

Cite this

Matveev, M. Y., Belnoue, J. P. H., Nixon-Pearson, O. J., Ivanov, D. S., Long, A. C., Hallett, S. R., & Jones, I. A. (2019). A numerical study of variability in the manufacturing process of thick composite parts. Composite Structures, 208, 23-32. https://doi.org/10.1016/j.compstruct.2018.09.092

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AU - Nixon-Pearson, O. J.

AU - Ivanov, D. S.

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AU - Hallett, S. R.

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AB - Consolidation of a prepreg layup to a target thickness is critical in order to achieve the required fibre volume fraction and dimensions in a composite part. Experiments show that different processing conditions lead to different levels of compaction and variability in the thickness. This paper presents an analysis of processing conditions and their effects on consolidation of thick composite components. A model that accounts for both percolation and squeezing flow is employed to study two toughened prepreg systems – IM7/8552 and IMA/M21. This paper analyses the significance of the process parameters on the thickness of prepregs and its variability. The analysis of different layups and processing conditions suggests several strategies to control target thickness and its variability. The IMA/M21 prepreg system was found to have lower variability due to its toughening mechanism. The presented results provide a better understanding of the composite manufacturing and can be used to provide an informed choice in design for manufacture of composite structures.

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