A novel method to decrease macro-residual stresses of laminated composites by adding carbon nano-fibers
Abstract
In this research, a novel method to decrease macro-residual stresses of laminated composites by adding carbon nano-fiber (CNF) is proposed. To this end, using micromechanical and modified micromechanical approaches, coefficient of thermal expansion (CTE) and Young’s modulus of carbon nano-fiber reinforced polymer are calculated. Then using this enhanced matrix, longitudinal and transverse of thermal expansion and Young’s modulus of a CNF/glass/epoxy unidirectional lamina in presence of CNF are obtained. Finally, using the classical lamination theory (CLT), macro-residual stresses for CNF/glass/epoxy laminated composites are obtained. The results explain how CNF can result in reducing macro-residual stresses in nano particle filled laminated composites. The results for both cross ply and angle ply glass/epoxy laminated composites are presented and show that adding CNF through the matrix can decrease macro-residual stresses in each plies up to about 30%. The main reason for the decrease in residual stresses are due to the sever decrease of coefficient of thermal expansion of the unidirectional ply.
(2012). A novel method to decrease macro-residual stresses of laminated composites by adding carbon nano-fibers. Modares Mechanical Engineering, 12(4), 147-155.
MLA
. "A novel method to decrease macro-residual stresses of laminated composites by adding carbon nano-fibers", Modares Mechanical Engineering, 12, 4, 2012, 147-155.
HARVARD
(2012). 'A novel method to decrease macro-residual stresses of laminated composites by adding carbon nano-fibers', Modares Mechanical Engineering, 12(4), pp. 147-155.
CHICAGO
, "A novel method to decrease macro-residual stresses of laminated composites by adding carbon nano-fibers," Modares Mechanical Engineering, 12 4 (2012): 147-155,
VANCOUVER
A novel method to decrease macro-residual stresses of laminated composites by adding carbon nano-fibers. Modares Mechanical Engineering, 2012; 12(4): 147-155.