Effect of carbon nanotubes on the in-plane dynamic behavior of a carbon/epoxy composite under high strain rate compression using SHPB

Abstract

Fiber reinforced composites have wide structural applications and vast research has been going on to improve their mechanical performance when subjected to quasi-static loading but, study of their dynamic behavior is still underdeveloped. For this reason, scientists have been continuously working on developing methods to improve their dynamic characteristics and addition of nanofillers suchs as Carbon Nanotubes (CNTs) as reinforcement is considered a possible solution for developing future generation high-quality fiber reinforced nanocomposites. In this study, composite specimens are manufactured using Epon 862 Epoxy resin and T300 6k carbon fibers, and each specimen contained different weight percentages of multi-walled Carbon nanotubes (MWCNTs) i.e. 0% as a reference, 0.5%, and 2%. Specimens were tested experimentally using the Split Hopkinson pressure bar device (SHPB) under different impact pressures to examine their dynamic response and damage behavior at high strain rates. During the dynamic compression tests, a high-speed camera was used to monitor and record the damage kinetics. The experimental characterization showed that the integration of CNTs in matrix has greatly influenced the dynamic response and damage mechanism of the Carbon Fiber Reinforced Polymers composite (CFRP). Mechanical behavior of specimens with each percentage demonstrated the enhancement of the mechanical properties and showed the increase of the dynamic characteristics and fracture resistance because of the increase in stiffness of matrix material and interfacial bonding between matix and fiber reinforcement.

On the Dynamic Tensile Behaviour of Thermoplastic Composite Carbon/Polyamide 6.6 Using Split Hopkinson Pressure Bar

“…To date, most studies found in the literature that were carried out on the dynamic mechanical properties of composite materials revolved around thermosetting composites [ 15 , 16 , 17 , 18 , 19 , 20 ] and compressive behavior [ 20 , 21 , 22 , 23 ]. Unlike the more commonly used thermoplastic composites that were reinforced with glass fibers [ 24 ], short fibers [ 25 ], basalt fibers [ 26 , 27 ]; very limited information can be found on in the literature on the dynamic properties, specifically, dynamic tensile properties of continuous carbon fiber-reinforced polymer (CFRP) composites [ 28 , 29 , 30 , 31 ], let alone the more recent carbon fiber-reinforced thermoplastic (CFRTP) composites [ 32 ].…”

Development of novel TPI/HDPE/CNTs ternary hybrid shape memory nanocomposites

“…Through a series of micro and macro thermodynamic tests, it was revealed the influence of CNTs content changes on the thermodynamic properties of the novel nanocomposite. Some of the conclusions of this article can be supported by the research of Tarfaoui et al [41][42][43]. By introducing carbon nano reinforced fillers into the TPI/HDPE hybrid matrix, it can not only expand the application range of carbon nanofillers, but also provide potential technical reference for the application of novel cardiac stent, functional gypsum, composite pipe and pipeline repair engineering in the future [44][45][46][47][48].…”

Mechanical characterisation of Aerosil-polycarbonate-based ceramic nanocomposites: 3D printing versus injection moulding technology

“…The concept of nanocomposites is based on the control of the dispersion of particles to make the best use of their structural aspects, such as their large specific surface area, allowing many polymer/ particle interactions as well as their high form factor. [11][12][13] The size (nanometric) can offer an enormous specific surface area and significant stability. Therefore, adding nanoparticles within composite materials will broaden their field of application.…”