پديدآورندگان :
Alasvand Zarasvand K Alasvand@stu.sku.ac.ir Department of Mechanical Engineering, Shahrekord University, Shahrekord , Golestanian H Department of Mechanical Engineering, Shahrekord University and Nanotechnology Research Center, Shahrekord University
كليدواژه :
MWCNT , Nanocomposite , Epoxy , Interface.
چكيده فارسي :
In this paper, experimental and finite element methods have been used to determine mechanical properties
of nanocomposites. Standard tensile and compression samples with 0.0, 0.15, 0.25, 0.35, and 0.45 weight fraction of
multi-walled carbon nanotube were prepared and were tested. Nanotube weight fraction was varied in order to
investigate the effects of nanotube weight fracti on on nanocomposite mechanical properties. Mechanical properties
such as: modulus of elasticity, yield strength, ultimate tensile strength and fracture strain were determined
experimentally. Also, numerical simulations were conducted in ABAQUS software. In these simulations, the effects of
the interface between individual nanotubes and the outer nanotube and matrix are investigated. Two different models
are used for these interfaces. Connector constraints are used in the first model and thin shells in the second model.
Experimental results show that, incorporation of carbon nanotubes highly improves modulus of elasticity, yield, and
ultimate tensile strengths of the epoxy resin. In addition, fracture strain decreases drastically with increasing nanotube
weight fraction. Also, the connector’s model predicted lower mechanical properties compared to the thin shell interface
model. Finally, experimental and numerical results are compared and a good correlation is observed between the
results.
