Global load-sharing model for unidirectional hybrid fibre-reinforced composites |
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| Affiliation: | 1. Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44 bus 2450, Belgium;2. Department of Mechanical Engineering, University of California, Santa Barbara, CA 93106, USA;3. Materials Department, University of California, Santa Barbara, CA 93106, USA;4. School of Engineering, University of Aberdeen, King’s College, Aberdeen AB24 3UE, Scotland, UK;1. Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, 3001 Leuven, Belgium;2. Material’s Research Group, University of Southampton, University Road, Southampton SO17 1BJ, United Kingdom;1. Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44 bus 2450, Belgium;2. Soft Matter Group, University of Leeds, LS2 9JT, United Kingdom;1. Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Ave. West, Waterloo N2L 3G1, Canada;2. Department of Advanced Interdisciplinary Studies, National University of Defense Technology, 137 Yanwachizhengjie Street, Changsha, Hunan 410073, China;3. Department of Systems Design Engineering, University of Waterloo, 200 University Ave. West, Waterloo N2L 3G1, Canada;1. Henry Moseley X-ray Imaging Facility, School of Materials, University of Manchester, Manchester M13 9PL, United Kingdom;2. Engineering Materials, University of Southampton, Southampton SO17 1BJ, United Kingdom |
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| Abstract: | A promising strategy to increase the tensile failure strain of carbon fibre-reinforced composites is to hybridise carbon fibres with other, higher-elongation fibres. The resulting increase in failure strain is known as the hybrid effect. In the present article, a global load-sharing model for hybrid composites is developed and used to carry out a parametric study for carbon/glass hybrids. Hybrid effects of up to 15% increase in failure strain are predicted, corresponding reasonably well to literature data. Scatter in the carbon fibre strength is shown to be crucial for the hybrid effect, while the scatter in glass fibre strength is much less important. In contrast to reports in earlier literature, the ratio of failure strains of the two fibres has only a small influence on the hybrid effect. The results provide guidelines for designing optimal hybrid composites. |
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| Keywords: | A. Strengthening and mechanisms B. Fibre-reinforced composite material C. Probability and statistics C. Hybrid composites |
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