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Orientation-dispersed pseudo-ductile hybrid composite laminates – A new lay-up concept to avoid free-edge delamination

Jalalvand, Meisam; Fotouhi, Mohamad; Wisnom, Michael R.

Orientation-dispersed pseudo-ductile hybrid composite laminates – A new lay-up concept to avoid free-edge delamination Thumbnail


Authors

Meisam Jalalvand

Michael R. Wisnom



Abstract

Multi-Directional hybrid composites can suffer from free-edge delamination, a damage mode that doesn't exist in Uni-Directional hybrid composites and can hinder the pseudo-ductility that can be achieved with thin-ply hybrids. This paper presents a new lay-up concept called ‘orientation-dispersed’ laminates to avoid this mode of damage in quasi-isotropic hybrids. It is shown that the energy release rates at the free-edges of orientation-dispersed layups are significantly lower than those in ‘orientation-blocked’ laminates. Finally, the experimental results from two quasi-isotropic layups with π/3 and π/4 intervals are presented showing a good pseudo-ductility with no free-edge delamination.

Citation

Jalalvand, M., Fotouhi, M., & Wisnom, M. R. (2017). Orientation-dispersed pseudo-ductile hybrid composite laminates – A new lay-up concept to avoid free-edge delamination. Composites Science and Technology, 153, 232-240. https://doi.org/10.1016/j.compscitech.2017.10.011

Journal Article Type Article
Acceptance Date Oct 14, 2017
Online Publication Date Oct 17, 2017
Publication Date Dec 1, 2017
Deposit Date Oct 19, 2017
Publicly Available Date Mar 29, 2024
Journal Composites Science and Technology
Print ISSN 0266-3538
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 153
Pages 232-240
DOI https://doi.org/10.1016/j.compscitech.2017.10.011
Keywords hybrid composites, fragmentation, non-linear behaviour, stress/strain curves, Finite Element Analysis (FEA)
Public URL https://uwe-repository.worktribe.com/output/877604
Publisher URL http://dx.doi.org/10.1016/j.compscitech.2017.10.011

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