Volume 16, Issue 3 (2016)                   Modares Mechanical Engineering 2016, 16(3): 193-201 | Back to browse issues page

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Kerman Saravi M, Pol M H, Sattari M H. Experimental investigation of the influence of adding nanotubes on Mode I interlaminar fracture toughness of laminated composites. Modares Mechanical Engineering. 2016; 16 (3) :193-201
URL: http://journals.modares.ac.ir/article-15-9931-en.html
Abstract:   (2065 Views)
In this research, the influence of adding carbon nanotubes on the tensile and the mode I interlaminar fracture of glass-fiber-epoxy laminated composite has been experimentally studied. For this purpose, the hybrid glass-fiber-epoxy-nanotube laminated composites which have 18 fiber-glass plain-weave layers were manufactured by hand lay-up method. The epoxy resin system is made of Epon828 resin with Epikure F205 as the curing agent. The multi-walled carbon nanotube (MWCNTs) modified with hydroxide (-COOH) is also dispersed into the epoxy system as a reinforcement in a 0%, 0.1%, 0.5% and 1% ratio in weight with respect to the matrix. In addition, the tensile nano-resin and hybrid nano-composite specimen were produced. The results of the tensile test of nano-matrixes indicate that the maximum change in Young's modulus, ultimate strength and fracture toughness of the samples is in the 0.5% sample, with a 31.2%, 21.4% and 16.66% increase with respect to neat sample, respectively. Moreover, the results of the tensile test of hybrid nano-composites indicate that the maximum change in fracture toughness, ultimate strength and fracture strain and of the samples is in the 0.5% sample, with a 12.6%, 9.8% and 12.6% increase with respect to neat sample, respectively. The result of the mode I interlaminar fracture toughness test of hybrid nano-composites show that the maximum change in value of the force (in force-displacement diagram) and value of the energy (of crack propagation in mode I interlaminar fracture), is in 0.5% sample, with a 24.4% and 24.15% increase respect to neat sample, respectively.
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Article Type: Research Article | Subject: Composites
Received: 2016/01/14 | Accepted: 2016/02/4 | Published: 2016/03/2

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