EXPERIMENTAL STUDY ON THE FRACTURE MECHANISM OF CARBON NANOTUBES
Carbon nanotubes (CNT) has a property of rebound elasticity, which is induced barely no fracture even bending to a greet extent due to itsperfect structural integrity. Resent studies have been carried out on the plastic formation and fracture process of CNT by calculation anddynamics simulation. In this paper, the radial fracture of CNT was found feasible even though CNT has high tenacity, hard to allocation anddetection for its nano-scale size. Both ramped load and constant load scratch tests were conducted on CNTs using a Nano Indetenter toinvestigate the pattern alteration and the critical behavior of radial fracture. Fracture caused by nano-scratching was observed after scratching. The scratch resistance of CNT and the evolution of friction coefficient during scratching were analyzed, and the critical load of fracture was obtained also, which led to a new understanding of the origin of the fracture mechanism of CNTs.
carbon nanotubes fracturemechanism nanoscratch critical load
Fei-hu Zhang Hua-li Zhang Hang Zhao
School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, China
国际会议
海南三亚
英文
2007-01-10（万方平台首次上网日期，不代表论文的发表时间）