Xiaodong Li et al 2004 Nanotechnology 15 1416 doi:10.1088/0957-4484/15/11/005
Xiaodong Li1,3, Hongsheng Gao1, Wally A Scrivens2, Dongling Fei2, Xiaoyou Xu2, Michael A Sutton1, Anthony P Reynolds1 and Michael L Myrick2
Show affiliationsNanomechanical properties of single-walled carbon nanotube (SWNT) reinforced epoxy composites with varying weight percentage (0, 1, 3, and 5 wt%) of nanotubes were measured by nanoindentation and nanoscratch techniques. Hardness and elastic modulus were measured using a nanoindenter. Scratch resistance and scratch damage were studied using the AFM tip sliding against the SWNT reinforced sample surfaces. Nanoindentation/nanoscratch deformation and fracture behaviour was studied by in situ imaging of the indentation impressions/scratch tracks. Viscoelastic properties of the nanocomposites were measured using nanoindentation dynamic mechanical analysis tests. The reinforcing mechanisms are discussed with reference to the nanotube dispersion, interfacial bonding, and load transfer in the SWNT reinforced polymer composites.
62.25.-g Mechanical properties of nanoscale systems
81.40.Np Fatigue, corrosion fatigue, embrittlement, cracking, fracture, and failure
81.40.Jj Elasticity and anelasticity, stress-strain relations
62.20.M- Structural failure of materials
Issue 11 (November 2004)
Received 21 April 2004
Published 23 August 2004
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