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Brittle and ductile removal modes observed during diamond turning of carbon nanotube composites

Jasinevicius, Renato Goulart and Andreeta, Marcello B. R. and Fossa, João S. and Hernandez-Rodriguez, Antônio Carlos and Duduch, Jaime G. and Demont, Philippe and Puech, Pascal Brittle and ductile removal modes observed during diamond turning of carbon nanotube composites. (2009) Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 223 (1). 1-8. ISSN 0954-4054

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Official URL: http://dx.doi.org/10.1243/09544054JEM1257

Abstract

Ultraprecision diamond turning was used to evaluate the surface integrity of a carbon nanotube (CNT) composite as a function of the cutting conditions and the percentage of CNT in the epoxy matrix. The effects of cutting conditions on the chip morphology and surface roughness were analysed. The results showed that an increase in the percentage of CNT may influence the mechanism of material removal and consequently improve the quality of the machined surface. When smaller quantities of CNT (0.02 and 0.07 wt %) are present in the matrix, microcracks form within the cutting grooves (perpendicular to the cutting direction). This indicates that the amount of CNT on the epoxy matrix may have a direct influence on the mechanical properties of these materials. Chips removed from the CNT composite samples were analysed by scanning electron microscopy in order to correlate the material removal mechanism and the surface generation process. The area average surface roughness Sa was influenced by the material removal mechanism (Sa ranging from 0.28 to 1.1 μm).

Item Type:Article
Additional Information:Thanks to SAGE Publications. The definitive version is available at http://pib.sagepub.com/content/223/1/1
HAL Id:hal-01110531
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Universidade de São Paulo - USP (BRAZIL)
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Deposited By: cirimat webmestre
Deposited On:28 Jan 2015 13:22

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