Investigation of the hybrid effect in high performance quasi-isotropic thin-ply carbon/glass composites under tension

Idarraga, Guillermo; Fotouhi, Mohammad; Jalalvand, Meisam; J, Meza; Wisnom, Michael

Authors

Guillermo Idarraga

Mohammad Fotouhi

Meisam Jalalvand

Meza J

Michael Wisnom

Abstract

This work studies the hybrid effect in high performance Quasi-Isotropic (QI) composite plates under tensile loading. The hybrid effect is the enhancement in strain at failure of the carbon fibre layers in the hybrid composite compared with a pure carbon fibre composite. Different types of QI lay-ups were tested and analysed to understand the interaction between the layers and the effect of the stiffness of the adjacent sub-laminates. A numerical model using finite element method was proposed to evaluate the strain distribution through the thickness considering a premature failure of one of the 0° carbon plies, the strain gradient was calculated as well as the average strain concentration in the undamaged 0° carbon ply. Correlations between pseudo-yield strain, strain concentration in the undamaged 0° carbon ply and stiffness of the sub-laminates were identified. Additionally, microscopic observations of specimens interrupted before the final failure were studied to recognise the damage mechanisms and measure the fragmentation distance.

Citation

Idarraga, G., Fotouhi, M., Jalalvand, M., J, M., & Wisnom, M. (2019, August). Investigation of the hybrid effect in high performance quasi-isotropic thin-ply carbon/glass composites under tension. Presented at ICCM22, Melbourne, Australia

Presentation Conference Type	Speech
Conference Name	ICCM22
Conference Location	Melbourne, Australia
Start Date	Aug 11, 2019
End Date	Aug 16, 2019
Acceptance Date	Mar 27, 2019
Publicly Available Date	Jun 6, 2019
Peer Reviewed	Not Peer Reviewed
Keywords	thin-ply hybrid composites, quasi-isotropic, pseudo-ductility, hybrid effect, numerical modelling, tensile tests
Public URL	https://uwe-repository.worktribe.com/output/850056
Additional Information	Title of Conference or Conference Proceedings : ICCM22