Showing papers in "Composites Science and Technology in 2007"

TL;DR: In this article, water immersion tests were conducted by immersing specimens in a de-ionised water bath at 25 °C and 100 °C for different time durations.

TL;DR: In this article, the authors review the published data for vapor-grown carbon nanofiber (VGCNF) composites and show that the best results, achieved with satisfactory dispersion, are consistent with each other and with calculation.

TL;DR: In this paper, composites based on cellulose fibres (raw or chemically modified) as reinforcing elements and thermoplastic matrices were prepared and characterized, in terms of mechanical performances, thermal properties and water absorbance behaviour.

TL;DR: In this paper, the effects of silane functionalization of multi-wall carbon nanotubes (CNTs) on properties of CNT/epoxy nanocomposites are investigated.

TL;DR: In this paper, the goal was to produce nanocomposites based on poly(lactic acid) (PLA) and cellulose nanowhiskers (CNW), which were treated with either tert-butanol or a surfactant to find a system that would show flow birefringence in chloroform.

TL;DR: In this paper, a review of the literature related to the vibratory behavior of carbon nanotubes and their composites is presented, along with key conclusions and recommendations from these studies.

TL;DR: In this paper, the meso-scale finite element (FE) modeling of textile composites is considered as a powerful tool for homogenisation of mechanical properties, study of stress-strain fields inside the unit cell, determination of damage initiation conditions and sites and simulation of damage development and associated deterioration of the homogenised mechanical properties of the composite.

TL;DR: In this paper, a new compounding method is proposed, where graphite nanoplatelets are premixed in isopropyl alcohol using sonication to disperse the xGnP by coating individual PP powder particles.

TL;DR: In this paper, the mechanical behavior of polymer-matrix composites unidirectionally reinforced with carbon or glass fibers subjected to compression perpendicular to the fibers was studied using computational micromechanics using finite element analysis of a representative volume element of the microstructure idealized as a random dispersion of parallel fibers embedded in the polymeric matrix.

TL;DR: In this paper, the authors examined the use of a continuum damage model to predict strength and size effects in notched carbon-epoxy laminates and found that the model is the most accurate technique to predict size effects.

TL;DR: In this article, an experimental design is proposed for drilling carbon fiber reinforced plastic (FRP) laminates under distinct cutting conditions, and the digital analysis of the damage was conducted in order to assess the delamination factor.

TL;DR: Baley et al. as discussed by the authors studied the tensile properties of natural fiber-biopolymer composites in order to determine whether or not, biocomposites may replace glass fibre reinforced unsaturated polyester resins.

TL;DR: In this paper, an improved analytical model is developed based on the average interparticle distance (IPD) concept to predict the percolation threshold of conducting polymer composites containing disc-shaped nanoparticles with high aspect ratios.

TL;DR: In this article, the volumetric wear rate is calculated from the Wang's model, Ratner's correlation and reciprocal of toughness, and the results obtained clearly show the linear relationship with CNT loading which supports the microscopic wear model.

TL;DR: In this paper, the stab resistance of shear thickening fluid (STF)-treated Kevlar and Nylon fabrics is investigated and found to exhibit significant improvements over neat fabric targets of equivalent areal density.

TL;DR: In this paper, a two-component healing system consisting of urea-formaldehyde microcapsules containing epoxy (30-70μm in diameter) and 2-methylimidazole (2-MeIm) latent hardener was synthesized to provide epoxy based composites with self-healing ability.

TL;DR: In this paper, a new processing method was developed for spreading fiber tows to make thin-ply laminated composites, which is robust and easy compared with other available thinply methods.

TL;DR: In this article, the authors reveal the first evidence that two types of percolation thresholds can coexist in an insulator-conductor system, the higher one attributed to a static and the lower one to a kinetic network formation process.

TL;DR: In this paper, the surface functionalization of multiwalled carbon nanotubes is carried out by acid treatment followed by reaction with multifunctional silane, 3-aminopropyltriethoxysilane.

TL;DR: In this article, a glass fiber reinforced vinyl ester composite with nanotube integration and examines the reinforcement potential on interlaminar shear strength was examined and a maximum of 45% increase was observed on several types of nanotubes with a very small amount of Nanotubes (0.015 ¼ ) coated in the midplane ply.

TL;DR: In this article, the nanofibers were isolated from a soybean source by combining chemical and mechanical treatments, and the results showed an increase in tensile strength from 21-MPa of PVA/UNF5 (untreated-fiber (5-wt%) reinforced PVA) and 65-mpa of pure PVA to 103-MPA(nylon fiber (5.5-wt%) reinforced polyvinyl alcohol (PVA)/SBN5.

TL;DR: In this article, a nanotube-reinforced epoxy nanocomposites were prepared by mixing amino-functionalized multi-walled carbon nanotubes with epoxy resin.

TL;DR: In this article, the dispersive and anisotropic behavior of Lamb waves in a two different types of symmetric laminates is studied theoretically and experimentally, with emphasis on group velocity and characteristic wave curves.

TL;DR: In this paper, the electrical resistivities and electromagnetic interference shielding effectiveness of carbon nanotubes (CNTs) and shape memory polymer (SMP) were investigated for electrical applications.

TL;DR: In this paper, the effect of three different stir casting routes on the structure and properties of fine fly ash particles (13μm average particle size) reinforced Al-7Si-0.35Mg alloy composite is evaluated.

TL;DR: In this article, a general two-dimensional solution for a cantilever functionally graded beam, assuming that all the elastic moduli of the material have the same variations along the beam-thickness direction, is presented.

TL;DR: In this paper, a new structural composite material reinforced with unidirectional natural fibers is prepared and tested and used reinforcement is made of long Alfa fibers, extracted from the stem of the Alfa plant by the soda process.

TL;DR: In this paper, the effects of increasing wood fiber weight contents on mechanical, thermomechanical and morphological properties of the polyhydroxybutyrate-co-valerate (PHBV) based biocomposites were evaluated.

TL;DR: In this paper, a two-phase micro-mechanical model with fiber assumed elastic and the matrix elasto-plastic is used to estimate the cutting forces during machining.

TL;DR: In this article, the effect of acid and amine-modified multiwall carbon nanotubes (MWCNTs) on the surface and volume electrical resistivities of MWCNT/polyimide composites was investigated.