Nonlinear stress-strain behavior of carbon nanotube fibers subject to slow sustained strain rate

Gengzhi Sun, Dong Wang, John H.L. Pang, Jun Liu, Lianxi Zheng

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摘要

Nonlinear stress-strain behavior of carbon nanotube (CNT) fibers is studied based on the test data where fiber strength can be modeled by the Weibull distribution. CNT fibers spun from vertically aligned arrays are tensioned at slow sustained strain rate (0.00001 1/s) to study the tensile strength resulting from sliding-to-failure effects. A model is developed to estimate the Weibull modulus which characterizes the dispersion of fiber strengths in terms of the maximum sustained stress and failure strain of the fibers. The results show that the sliding indeed has great influence on the stress-strain relation of CNT fibers at low strain rate.

源语言英语
文章编号131902
期刊Applied Physics Letters
103
13
DOI
出版状态已出版 - 23 9月 2013
已对外发布

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