On the 3D void formation of hybrid carbon/glass fiber composite laminates: A statistical approach

Francisco Monticeli*, Humberto Almeida, Roberta Neves, Felipe Ornaghi, Heitor L Ornaghi Jr

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This work aims at assessing the effect of the stacking sequence of hybrid laminates on the 3D void formation through a statistical approach. For that purpose, a three-dimensional microstructure is created from multiple two-dimensional microscopy images. Weibull approach shows a poorer fit for carbon fiber composite, while the presence of glass fiber creates homogenization in porosity variation, also treated by ANOVA. The present methodology enables the prediction of void volume fraction in different carbon/glass preform ratios and stacking sequence along the laminate length and through-thickness. The low glass fiber ratio decreases the void content, homogenized porosity distribution along laminate length, and thickness, mainly for glass fiber preforms located in the middle of the laminate. These results confirm that the uniformity of void content throughout the composite can be improved by altering the stacking sequence and ratio of glass to carbon fiber preforms. This methodology can be extended to any composite manufacturing process.
Original languageEnglish
Article number106036
Pages (from-to)1-10
Number of pages10
JournalComposites Part A : Applied science and manufacturing
Volume137
DOIs
Publication statusPublished - 1 Oct 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Hybrid
  • Laminate/ply
  • Statistical approach
  • Void formation

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