Pseudo-ductility and reduced notch sensitivity in multi-directional all-carbon/epoxy thin-ply hybrid composites

Cz�l, Gergely; Rev, Tamas; Jalalvand, Meisam; Fotouhi, Mohammad; Longana, Marco L.; Nixon-Pearson, Oliver J.; Wisnom, Michael R.

Abstract

© 2017 The Author(s) Un-notched and notched tensile response and damage accumulation of quasi-isotropic carbon/epoxy hybrid laminates made of ultra-high modulus and intermediate modulus carbon fibre/epoxy thin-ply prepregs were studied. It was confirmed that the ply fragmentation demonstrated previously in unidirectional hybrids as a successful pseudo-ductility mechanism can be transferred to multi-directional laminates. Furthermore, reduced notch sensitivity was demonstrated in quasi-isotropic specimens for both open holes and sharp notches as a result of local ply fragmentation around the notch.

• Journal Article Type: Article
• Acceptance Date: Oct 25, 2017
• Online Publication Date: Nov 14, 2017
• Publication Date: Jan 1, 2018
• Deposit Date: Nov 20, 2017
• Publicly Available Date: Nov 20, 2017
• Journal: Composites Part A: Applied Science and Manufacturing
• Print ISSN: 1359-835X
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 104
• Pages: 151-164
• DOI: https://doi.org/10.1016/j.compositesa.2017.10.028
• Keywords: B. fragmentation, B. delamination, C. damage mechanics, D. mechanical testing
• Public URL: https://uwe-repository.worktribe.com/output/872697
• Publisher URL: http://dx.doi.org/10.1016/j.compositesa.2017.10.028
• Contract Date: Nov 20, 2017