Structure changes during tensile deformation and mechanical properties of a twisted carbon nanotube yarn |
| |
| Affiliation: | 1. Institute for Astronomy, University of Hawaii at Manoa, Honolulu, HI 96822, USA;2. Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, UK;3. Institute for Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan;4. Department of Physics, P.O. Box 64, 00014 University of Helsinki, Finland;5. Finnish Geodetic Institute, P.O. Box 15, 02430 Masala, Finland;6. ESA NEO Coordination Centre, Frascati (RM), Italy;7. Minor Planet Center, Cambridge, MA, USA;8. Department of Physics, Durham University, South Road, Durham DH1 3LE, UK;1. Department of Physics, Panjab University, Chandigarh 160014, India;2. Amity Institute of Nanotechnology, Noida 201313, India;3. Department of Chemistry, Panjab University, Chandigarh 160014, India;1. Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada;2. Institute for Research in Materials, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada;3. Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada;4. Department of Environment, Biological, and Medical Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH, 45221-0012, USA |
| |
| Abstract: | The small-angle X-ray scattering measurements during tensile deformation have been performed for studying the structure and mechanical property relationships of twisted carbon nanotube (CNT) yarns. The tensile strength distribution and the diameter changes during tensile deformation have also been measured. The orientation distribution of the CNTs in the yarn has been determined and its changes during tensile deformation have been related to the variation of the tensile modulus with the twist angle. The tensile modulus and Poisson’s ratio of the yarns decreased with increasing twist angle, whereas the tensile strength of the yarn showed a maximum at the twist angle of 25°. At this twist angle, the distribution width of the tensile strength was minimum indicating the higher uniformity of the yarn structure. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
