Tensile Loading of Ropes of Single Wall Carbon Nanotubes and their Mechanical Properties
Min‐Feng YuDepartment of Physics, Washington University–St. Louis, St. Louis, Missouri 63130Bradley S. FilesEM2—Materials and Process Technology Branch, NASA/Johnson Space Center, Houston, Texas 77058Sivaram ArepalliG_B_Tech/Lockheed Martin, 2400 NASA Road One, Houston, Texas 77058Rodney S. RuoffDepartment of Physics, Washington University–St. Louis, St. Louis, Missouri 63130
2000en
ABI
Аннотация
The mechanical response of 15 single wall carbon nanotube (SWCNT) ropes under tensile load was measured. For 8 of these ropes strain data were obtained and they broke at strain values of 5.3% or lower. The force-strain data are well fit by a model that assumes the load is carried by the SWCNTs on the perimeter of each rope. This model provides an average breaking strength of SWCNTs on the perimeter of each rope; the 15 values range from 13 to 52 GPa (mean 30 GPa). Based on the same model the 8 average Young's modulus values determined range from 320 to 1470 GPa (mean 1002 GPa).
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