Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5021766 | Composites Part B: Engineering | 2017 | 15 Pages |
Abstract
Low velocity impact behaviour of nano-SiO2 enhanced carbon fibre/epoxy composites for naval applications is reported. Epoxy resin matrix was enhanced by 1- 8Â wt% SiO2 nanoparticles, based on industrial surface-modified nanosilica. Impact parameters: force, deformation, energy, damage size were recorded. The most pronounced effect was damage size decrease; e.g. â¼28% recorded by infrared thermography and X-ray computed radiography for 8% nano-SiO2 content. Crack branching and crack deflection, due to the nanoparticles, were observed. Decreases in permanent deformation, by â¼15%, and absorbed energy, by â¼8%, were observed, as well as improved fibre/matrix interfacial strength. Flexural strength peaked at 2-5% at â¼640Â MPa and then decreased, probably due to nanoparticle agglomerations. There was very little effect of small nanoparticle contents on impact force, deformation and energy, with only a 6% increase of the peak impact force for 8% nano-SiO2 content.
Related Topics
Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
M. Landowski, G. StrugaÅa, M. Budzik, K. ImieliÅska,