Showing papers in "Composites Science and Technology in 2012"

TL;DR: In this paper, the preparation and characterisation of different forms of graphene are reviewed and different techniques that have been employed to prepare graphene such as mechanical and solution exfoliation, and chemical vapour deposition are discussed briefly.

TL;DR: In this article, the physical, transport and electrochemical behaviors of the electrodes made from composites containing carbon nanotubes (CNTs) are discussed, and the challenges that remain in using CNTs and CNT-based composites as well as the prospects for exploiting them in the future are discussed.

TL;DR: In this paper, a simple covalent functionalization with 3-aminopropyl triethoxysilane was used to synthesize functionalized graphene nanosheets (f-GNSs).

TL;DR: In this article, the tensile properties of the snake grass fiber are studied and compared with the traditionally available other natural fibers, and the experimental evidence also shows that the volume fraction increases the elasticity, flexural strength and modulus.

TL;DR: In this article, bionanocomposites based on renewable cellulose nanowhiskers (CNWs) as nanofillers and renewable poly( l -lactide) (PLA) as polymeric matrix were successfully and straightforwardly prepared using melt-extrusion technique.

TL;DR: In this article, a numerical model has been elaborated in order to simulate the different impact damage types developing during low velocity/low energy impact, including matrix cracking, fiber failure and delamination.

TL;DR: In this paper, a two-roll mill mixing of natural rubber and functionalized graphene sheets (FGSs) nanocomposites was used to construct a new class of advanced materials.

TL;DR: In this paper, the effect of the chain extender and processing conditions on the properties of the PLA-clay nanocomposites were investigated for different strategies of mixing, and the results revealed that the increased molecular weight in the Joncryl-based nanocomposition caused a significant increase in the modulus, drawability and toughness of the samples.

TL;DR: In this paper, the mechanical behavior of unidirectional fiber-reinforced polymer composites subjected to tension and compression perpendicular to the fibers is studied using computational micromechanics.

TL;DR: In this paper, high modulus carbon fibres were used to prepare single fiber model composites based on an epoxy resins and their moisture uptake behavior was monitored, and the equilibrium moisture content and diffusion coefficients for the samples were determined.

TL;DR: In this article, experimental investigations on flax and glass fabrics reinforced epoxy specimens, submitted to fatigue tests are presented in order to investigate the specific stress-number of cycles to failure (S-N) curves.

TL;DR: In this paper, the electrical and various mechanical properties were compared to understand the specific dispersion and reinforcement behaviors of these nanostructured fillers, and the electrical resistivity of the rubber composite gradually decreased with the increase of filler amount in the composite.

TL;DR: In this paper, the authors reported substantial improvement in the mechanical and thermal properties of a polyurethane (PU) resulting from the incorporation of well-dispersed graphene oxide (GO).

TL;DR: In this paper, the influence of reinforcement on physical-chemical properties of the composites obtained by melt processing has been analyzed and the results showed that the incorporation of sisal or hemp strands caused an increase in the glass transition temperature (Tg) of the TPS as determined by DMTA.

TL;DR: In this article, the current state of knowledge on mechanical performance profiles of injection molded natural fiber composites and wood polymer composites based on polypropylene (PP) was analyzed.

TL;DR: In this paper, the effect of aggregate-free silica nanoparticles and phase-separated submicron rubber particles on the mechanical properties of modified epoxy resins was investigated.

TL;DR: In this paper, the fatigue mechanisms of wind turbine blades were examined using computed tomography (CT) to identify key damage mechanisms, such as transverse matrix cracking in the surface layer, occurring predominantly at free edges.

TL;DR: In this article, three MAPP couplers with different molecular weights and maleic anhydride contents were considered and the effects on the mechanical properties of the composite were studied, and scanning electron microscopy was used to study the fracture morphology of the tensile specimens.

TL;DR: In this paper, microfibrillated cellulose (MFC) based thin membrane-like fully biodegradable composites were produced by blending MFC suspension with polyvinyl alcohol (PVA).

TL;DR: In this paper, two noncrimp 3D woven carbon fiber composites (through thickness angle interlock) of binder volume fractions 3% and 6% were characterised for their response to applied deformation.

TL;DR: In this paper, a combined experimental/numerical study was conducted to investigate the perforation resistance of sandwich structures and the impact response of sandwich panels on an aqueous support.

TL;DR: In this paper, the fracture behavior parallel to the fibers of an E-glass/epoxy unidirectional laminate was studied by means of three-point tests on notched beams.

TL;DR: In this article, a one-step in situ polymerization of e-caprolactam monomer in the presence of electrically insulating and thermally unstable graphene oxide (GO) nanosheets was presented.

TL;DR: In this paper, the surface topography and surface energy of jute fibres were characterized using single fiber pull-out tests combined with SEM and AFM characterization of the fracture surfaces.

TL;DR: In this paper, the authors reported the experimental results of a hybrid which has both the cooling-responsive shape memory effect (SME) and water-responsive SME, which is made of a plastic sponge (as elastic component) filled with Poloxamer 407 (P407) gel (as transition component).

TL;DR: In this paper, the effect of fiber volume fraction on the physical and tensile properties of aligned plant fiber composites (PFCs) produced via vacuum infusion has been investigated, and the absolute theoretical maximum fibre content is found to be 58.9%, which agrees with experimental values in literature.

TL;DR: In this article, long chain or cross-linked polymers like polyvinyl alcohol, polyimide, and bismaleimide (BMI) were introduced into CNT fibres by infiltration with aid of polar solvents.

TL;DR: In this paper, the reinforcing effect of graphene in enhancing the cryogenic tensile and impact properties of epoxy composites is examined at a weight fraction of 0.05-0.50%.

TL;DR: In this paper, aligned carbon nanotubes (CNTs) are implemented into alumina-fiber reinforced laminates, and enhanced mass-specific thermal and electrical conductivities are observed.

TL;DR: In this article, a hyperelastic constitutive law is proposed to describe the mechanical behavior of 3D layer to layer angle interlock composite reinforcements, and the model is validated on forming simulations on a single curve and double curve shapes.