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Carbon nanotube yarns(CNTY)possess good specific strength and specific conductivity.As such,their potential for commercial applications is significant.Fatigue performance is a significant consideration in yarn/wire applications.In this study,the flexural fatigue performance of CNTY spun from super-aligned carbon nanotube arrays was investigated using a reversed bending test.The results showed that CNTY exhibited excellent resistance to pure flexural fatigue,significantly outperforming stainless steel wire;CNTY failed where a combination of flexural fatigue and tension–tension fatigue had special hollow fracture morphology,and CNTY resistance remained fundamentally unchanged in the combination fatigue process.
The carbon nanotube yarns (CNTY) possess good specific strength and specific conductivity. As such, their potential for commercial applications is significant. Fatigue performance is a significant consideration in yarn / wire applications. In this study, the flexural fatigue performance of CNTY spun from super -aligned carbon nanotube arrays was investigated using a bending test. The results showed that CNTY showed excellent resistance to pure flexural fatigue, significantly outperforming stainless steel wire; CNTY failed where a combination of flexural fatigue and tension-tension fatigue had special hollow fracture morphology , and CNTY resistance was fundamentally unchanged in the combination fatigue process.