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

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• Peer Reviewed: Not Peer Reviewed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