期刊
COMPOSITE STRUCTURES
卷 143, 期 -, 页码 362-370出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2016.02.010
关键词
Pseudo-ductility; Thin-ply composites; Fragmentation; Delamination; Damage and fracture mechanics; Mechanical testing
资金
- UK Engineering and Physical Sciences Research Council [EP/I02946X/1]
- Hungarian Academy of Sciences
- Janos Bolyai scholarship
- Hungarian National Research, Development and Innovation Office (NKFIH) [K 116070]
- EPSRC [EP/I02946X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I02946X/1] Funding Source: researchfish
A comprehensive set of thin-ply pseudo-ductile unidirectional interlayer hybrid composite materials comprising S-glass and a variety of thin carbon prepregs was designed and characterised. Unique elastic-yielding-hardening type stress-strain responses similar to those of ductile metals were achieved through fragmentation and stable pull-out of the carbon layers, generating a range of initial moduli, pseudo-yield strains, plateau stresses and pseudo ductile strains for the various configurations. The typical failure modes of thin-ply hybrid composites were highlighted in four series of stress strain graphs obtained for the same materials with different carbon layer thicknesses. The predicted failure modes agreed well with the experimental results and demonstrated the merit of our two step design framework based on (i) simple analytical criteria and (ii) novel damage mode maps. (C) 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.orgilicensesiby/4.0/).
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