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Dynamic Impact Absorption Behaviour of Glass Coated with Carbon Nanotubes

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DOI: 10.4236/jsemat.2013.34034    3,000 Downloads   4,320 Views   Citations

ABSTRACT

Boro-silicate glass samples were coated with chemically treated multi-walled carbon nanotubes (MWCNTs) to study the resistance offered by the coatings under the high strain rate impact. Impact testing of these glass samples was performed on Split Hopkinson Pressure Bar (SHPB), where strain rates were varied from 500/s to 3300/s. However, the comparisons were limited to samples subjected to a strain rate of 2300/s to 3000/s so that the effect of only variable deposits of coatings on the stress-strain behavior of glass can be studied. Variable deposits (0.1 mg to 0.8 mg) of MWCNTs were coated uniformly on glass samples having a disc shape with a fixed surface area (79 mm2) to observe the effect of the coating on the impact absorption capacity of glass. It was observed that the small thickness of about 25 μm formed due to the fact that 0.2 mg of MWCNTs deposit spread over the surface increased the impact absorption capacity of the glass pieces by nearly 70%. However, beyond this amount when the deposit was increased to 0.4 mg, the coating thickness got doubled to nearly 49 μm and this led to a fall in absorption capacity which remained static till 0.8 mg deposit. However, even this decrease in capacity was able to absorb 30% more impact than offered by pure glass sample.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

P. Jindal, M. Goyal and N. Kumar, "Dynamic Impact Absorption Behaviour of Glass Coated with Carbon Nanotubes," Journal of Surface Engineered Materials and Advanced Technology, Vol. 3 No. 4, 2013, pp. 257-261. doi: 10.4236/jsemat.2013.34034.

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