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

被引：38

作者：

Ren, Y

Fu, YQ

Liao, K ^{[1
]}

Li, F

Cheng, HM

机构：

[1] Nanyang Technol Univ, Sch Mech & Prod Engn, Singapore 639798, Singapore

[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 15期

关键词：

D O I：

10.1063/1.1703837

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. (C) 2004 American Institute of Physics.

引用

页码：2811 / 2813

页数：3

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