Synergistic mode II delamination toughening of composites using multi-scale carbon-based reinforcements
| Autor: | Adrian P. Mouritz, Anil R. Ravindran, Chun H. Wang, Raj B. Ladani |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Toughness
Materials science Delamination Nanoparticle 02 engineering and technology Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Finite element method 0104 chemical sciences Fracture toughness Mechanics of Materials visual_art Nano Ceramics and Composites Fracture (geology) visual_art.visual_art_medium Composite material 0210 nano-technology |
| Zdroj: | Composites Part A: Applied Science and Manufacturing. 117:103-115 |
| ISSN: | 1359-835X |
| DOI: | 10.1016/j.compositesa.2018.11.011 |
| Popis: | This paper presents an investigation into the synergistic improvements to the mode II interlaminar fracture toughness of composites using multi-scale carbon reinforcements spanning the nano to millimetre length scales. Varying volume fractions of carbon nanofibres (CNFs) and millimetre-long carbon fibre z-pins were used to increase the mode II delamination resistance of multi-scale reinforced composites. The results reveal that adding CNFs into the epoxy matrix and transversely inserting z-pins creates a synergistic, rather than additive, improvement to the mode II fracture toughness. The magnitude of the synergistic toughening effect depends on the volume contents of both the nanofibres and z-pins, with the measured synergistic improvement to the mode II toughness being up to 26% (i.e. greater than the expected additive toughening contribution from each filler type). A finite element (FE) numerical model has been developed to accurately predict the mode II fracture properties and the synergistic toughening effect exhibited by the multi-scale reinforced epoxy composites. |
| Databáze: | OpenAIRE |
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