02014nam a2200301Ia 4500 MX-MdCICY 20260521091648.0 CICY B-19008 Time-dependent microstructural evolution mechanisms of twisted carbon nanotube fibers under tension and relaxation International Journal of Plasticity, 136, p.102866, 2021 Carbon nanotube (CNT)fibers are inevitably subject to severe plastic deformation under complex loading conditions while applying in wearable electronics. In this work, we uncover the time-dependent structure evolution mechanism of twisted CNT fibers by a series of continuous and discontinuous loading experiments. The results reveal that the highly twisted CNT fibers are more sensitive to strain rate and have large stress attenuation during the relaxation process. The in-situ tensile test under scanning electron microscope (SEM)indicates that the twisting angles of CNT fiber decreased during the stretching and relaxation due to the slippage and rearrangement of CNTs. An unsteady ternary model is developed to describe the stress relaxation behavior of twisted CNT fibers taking strain rate effect and the time dependence of viscosity into account; then the constitutive equations are mathematically derived and analyzed. We believe that this work would provide beneficial guidance for designing twisted CNT fiber with high reliability and durability. CNT FIBER STRESS RELAXATION IN-SITU SEM TIME-DEPENDENT EFFECT UNSTEADY TERNARY MODEL Xue, X. Wang, P. Gong, M. Tian, J. Qiao, Y. Shan, J. Xu, S. https://drive.google.com/file/d/152GVmxGYp-ipLDkcubntjEqOA8YIMzq_/view?usp=drivesdk Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx Loc REF1 250602s9999 xx |||||s2 |||| ||und|d 29089 29089 0 0 Loc 0 0 F1 CICY CICY RE 2025-06-25 0 B-19008 2025-06-25 16:24:23 2025-06-25 REF1