Publication :


Title:

Identification and modelling of the in-plane reinforcement orientation variations in a CFRP laminate produced by manual lay-up

Authors: Y. Davila, L. Crouzeix, B. Douchin, F. Collombet and Y.-H. Grunevald
Year: août 2017
Journal: Applied Composite Materials.


DOI: 10.1007/s10443-017-9642-4

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.

Bibtex citation :
@article{Davila2017,
Author={Davila, Y. and Crouzeix, L. and Douchin, B. and Collombet, F. and Grunevald, Y.-H.},
Title={Identification and modelling of the in-plane reinforcement orientation variations in a CFRP laminate produced by manual lay-up},
Journal={Applied Composite Materials},
Month={august},
Volume={},
Number={},
Pages={},
Year={2017}}


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