Characterizing the failure processes that limit the storage of energy in carbon nanotube springs under tension
نویسندگان
چکیده
We report correlated measurements of cyclic loading behavior with electrical resistance of energystoring carbon nanotube (CNT) springs under tensile loading. Tests are conducted on fibers of MWCNTs fabricated from 6 mm tall forests. The highest measured strength and stiffness of the fibers are 0.5 N/tex and 24 N/tex. The resistance and stress responses of the fibers during loading to failure and cyclic loading demonstrate that disorder at the nanoscale affects the bulk response. CNTs springs perform well under cyclic tensile loading and show limited effects of fatigue.
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