title: Deformation mechanisms of carbon nanotube fibres under tensile loading by in situ Raman spectroscopy analysis.
abstract: Deformation mechanisms of carbon nanotube (CNT) fibres under tensile loading are studied by means of in situ Raman spectroscopy to detect the CNT deformation and stress distributions in the fibres. The G' band in the Raman spectrum responds distinctly to the tensile stress in Raman shift, width and intensity. The G' band changes with the tensile deformation of the fibre at different stages, namely elastic deformation, strengthening and damage-fracture. It is deduced that the individual CNTs only deform elastically without obvious damage or bond breaking. The yield and fracture of fibres can be due to the slippage among the CNTs.
authors: Tianjin Key Laboratory of Modern Engineering Mechanics, School of Mechanical Engineering, Tianjin University, Tianjin, People's Republic of China.
authors: Qiu
authors: Q
authors: Li
authors: Yi-Lan
authors: YL
authors: Kang
authors: Wei
authors: W
authors: Qiu
authors: Ya-Li
authors: YL
authors: Li
authors: Gan-Yun
authors: GY
authors: Huang
authors: Jian-Gang
authors: JG
authors: Guo
authors: Wei-Lin
authors: WL
authors: Deng
authors: Xiao-Hua
authors: XH
authors: Zhong