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Realising damage-tolerant nacre-inspired CFRP.
- Source :
-
Journal of the Mechanics & Physics of Solids . Jul2018, Vol. 116, p391-402. 12p. - Publication Year :
- 2018
-
Abstract
- In this work, a nacre-inspired Carbon Fibre Reinforced Polymer (CFRP) composite is designed, synthesised and tested. Analytical and numerical models are used to design a tiled micro-structure, mimicking the staggered arrangement of ceramic platelets in nacre and exploiting geometrical interlocks for crack deflection and damage diffusion. The designed pattern of tiles is then laser-engraved in the laminate plies. In order to increase the damage-spreading capability of the material, a thin layer of poly(lactic acid) (PLA) is film-cast on the interlaminar region, both as a continuous film and as a pattern of fractal-shaped patches. Three-point bending tests show how the nacre-like micro-structure succeeds in deflecting cracks, with damage diffusion being significantly improved by the addition of PLA at the interface between tiles. It is observed that a texture of discontinuous fractal-shaped PLA patches can increase damage diffusion, by promoting the unlocking of tiles whilst preserving the interface strength. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CARBON
*FIBERS
*POLYMERS
*SURFACE cracks
*DEFLECTION (Mechanics)
Subjects
Details
- Language :
- English
- ISSN :
- 00225096
- Volume :
- 116
- Database :
- Academic Search Index
- Journal :
- Journal of the Mechanics & Physics of Solids
- Publication Type :
- Periodical
- Accession number :
- 129808731
- Full Text :
- https://doi.org/10.1016/j.jmps.2018.04.004