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Aligned discontinuous carbon fibre tows in hybrid composites and their tensile behaviour: an experimental study

Khong, Wui Gan and You, Wei Ho and Zheng, Yang Ow and Israr, Haris Ahmad and Wong, King Jye (2019) Aligned discontinuous carbon fibre tows in hybrid composites and their tensile behaviour: an experimental study. Journal of Composite Materials, 53 (26-27). pp. 3893-3907. ISSN 0021-9983

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Official URL: http://dx.doi.org/10.1177/0021998319849697


The paper aims to explore potential higher value applications of discontinuous carbon fibre tows. A vibration-assisted dry alignment method is presented to align the discontinuous fibre tows between conventional dry reinforcement mats/fabrics to fabricate cost-effective hybrid composites. Its viability is demonstrated by successful fabrication of two hybrid composite panels, where thin layers of aligned 12 mm discontinuous carbon fibre tows were deposited between E-glass chopped strand mats or woven fabrics respectively, via an out-of-autoclave resin infusion process; 54% and 81% of the fibre tows were aligned in the range of ±5° and ±10°, respectively. The tensile test results clearly demonstrate the importance of having the discontinuous fibre tows highly aligned in the hybrid composites, which shows increased stiffness (up to 24.4%) and strength (up to 59.9%) over the non-aligned hybrid composites. The aligned hybrid composites also exhibit a non-linear pseudo-ductile response due to subcritical progressive damage compared to the catastrophic brittle failure of the baseline non-hybrid E-glass and non-aligned hybrid composites, despite the tensile strength knockdown (up to −40.3%) due to premature inter-tow debonding. They also display increased stiffness up to 90%.

Item Type:Article
Uncontrolled Keywords:fibre tow alignment, hybrid composites, mechanical testing
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:87990
Deposited By: Yanti Mohd Shah
Deposited On:30 Nov 2020 21:44
Last Modified:30 Nov 2020 21:44

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