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

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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 Sept 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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title = "A numerical study of variability in the manufacturing process of thick composite parts",

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.",

keywords = "Prepregs, Process simulation, Variability",

author = "Matveev, {M. Y.} and Belnoue, {J. P.H.} and Nixon-Pearson, {O. J.} and Ivanov, {D. S.} and Long, {A. C.} and Hallett, {S. R.} and Jones, {I. A.}",

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doi = "10.1016/j.compstruct.2018.09.092",

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T1 - A numerical study of variability in the manufacturing process of thick composite parts

AU - Matveev, M. Y.

AU - Belnoue, J. P.H.

AU - Nixon-Pearson, O. J.

AU - Ivanov, D. S.

AU - Long, A. C.

AU - Hallett, S. R.

AU - Jones, I. A.

PY - 2019/1/15

Y1 - 2019/1/15

N2 - 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.

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.

KW - Prepregs

KW - Process simulation

KW - Variability

UR - http://www.scopus.com/inward/record.url?scp=85054570072&partnerID=8YFLogxK

U2 - 10.1016/j.compstruct.2018.09.092

DO - 10.1016/j.compstruct.2018.09.092

M3 - Article (Academic Journal)

AN - SCOPUS:85054570072

SN - 0263-8223

VL - 208

SP - 23

EP - 32

JO - Composite Structures

JF - Composite Structures

ER -

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

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Keywords

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