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Applied Composite Materials

, Volume 25, Issue 3, pp 647–660 | Cite as

Identification and Modelling of the In-Plane Reinforcement Orientation Variations in a CFRP Laminate Produced by Manual Lay-Up

  • Yves Davila
  • Laurent Crouzeix
  • Bernard Douchin
  • Francis Collombet
  • Yves-Henri Grunevald
Article
  • 746 Downloads

Abstract

Reinforcement angle orientation has a significant effect on the mechanical properties of composite materials. This work presents a methodology to introduce variable reinforcement angles into finite element (FE) models of composite structures. The study of reinforcement orientation variations uses meta-models to identify and control a continuous variation across the composite ply. First, the reinforcement angle is measured through image analysis techniques of the composite plies during the lay-up phase. Image analysis results show that variations in the mean ply orientations are between −0.5 and 0.5° with standard deviations ranging between 0.34 and 0.41°. An automatic post-treatment of the images determines the global and local angle variations yielding good agreements visually and numerically between the analysed images and the identified parameters. A composite plate analysed at the end of the cooling phase is presented as a case of study. Here, the variation in residual strains induced by the variability in the reinforcement orientation are up to 28% of the strain field of the homogeneous FE model. The proposed methodology has shown its capabilities to introduce material and geometrical variability into FE analysis of layered composite structures.

Keywords

Variability In-plane fibre orientation FE models Meta-models 

Notes

Acknowledgements

The authors would like to acknowledge the Consejo Nacional de Ciencia y Tecnologia (CONACyT) of Mexico for providing the funding for the PhD thesis work of Yves Davila.

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Copyright information

© Springer Science+Business Media B.V. 2017

Authors and Affiliations

  1. 1.INSA, UPS, Mines d’Albi, ISAE, ICA (Institut Clément Ader)Université de ToulouseToulouseFrance
  2. 2.Composites Expertise & SolutionsLa Penne Sur HuveauneFrance

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