The effect of thickness of Nylon 6,6 nanofibrous mat on Modes I–II fracture mechanics of UD and woven composite laminates

This paper presents an experimental investigation on epoxy resin-carbon fibers composites interleaved with Nylon 6,6 nanofibers. In particular, the paper focuses on the effect of the thickness of the nanoreinforce into two types of laminae: unidirectional (UD) and plain wave (PW). The effectiveness...

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Bibliographic Details
Published in:Composite structures 2016-10, Vol.154, p.172-178
Main Authors: Brugo, T., Palazzetti, R.
Format: Article
Language:English
Subjects:
Composite materials
Delamination
Fiber reinforced plastics
Fracture mechanics
Laminates
Micrographs
Nanofibers
Nanostructure
Nylons
Thickness
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Summary:This paper presents an experimental investigation on epoxy resin-carbon fibers composites interleaved with Nylon 6,6 nanofibers. In particular, the paper focuses on the effect of the thickness of the nanoreinforce into two types of laminae: unidirectional (UD) and plain wave (PW). The effectiveness of the nanoreinforce has been addressed by comparing critical and propagation energy release rates, calculated by testing samples under Mode I and Mode II fracture mechanic loads. Experiments show a general improvement in delamination resistance when the nanofibers are interleaved. Nevertheless slightly different behaviour has been found between the two types of lamina: micrographs of crack paths have been used to explain the reinforce mechanisms and such differences, suggesting a strong interaction between the nature of the fabric and the thickness of the nanointerlayer.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2016.07.034