Fatigue failure mechanisms of single-walled carbon nanotube ropes embedded in epoxy

Ren, Yang, Fu, Yong Qing, Liao, K., Li, F. and Cheng, Hui-Ming (2004) Fatigue failure mechanisms of single-walled carbon nanotube ropes embedded in epoxy. Applied Physics Letters, 84 (15). p. 2811. ISSN 0003 6951

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Official URL: http://dx.doi.org/10.1063/1.1703837

Abstract

In this work, fatigue failure mechanisms of single-walled carbon nanotube(SWCNT) bundles embedded in epoxy matrix under repeated tensile load were studied. Observed damage and failure modes include: (1) splitting of SWCNT bundles, (2) kink formation and subsequent failure in SWCNTs, and (3) fracture of SWCNT bundles. Patterns of crack propagation under tension in SWCNTs were studied by molecular mechanics simulations, where defect-free SWCNTs and SWCNTs with two different modes of Stone–Wales defects were studied. It is demonstrated by the results of molecular mechanics simulation that the observed fracture surfaces of SWCNT can be reproduced reasonably well, suggesting possible fatigue failure mechanisms of SWCNT in the composite.

Item Type: Article
Subjects: F200 Materials Science
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 26 Mar 2015 15:24
Last Modified: 24 Oct 2017 08:55
URI: http://nrl.northumbria.ac.uk/id/eprint/21834

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