Showing papers in "Composite Structures in 2008"

TL;DR: In this paper, the main fields of application of FRC composites are examined and future perspectives discussed, and some attention is paid to computation methods and composite materials' design approaches.

TL;DR: In this paper, a set of fundamental dynamic equations of a two-dimensional (2D) higher-order theory for rectangular functionally graded (FG) shallow shells is derived by using the method of power series expansion of displacement components, by taking into account the effects of transverse shear and normal deformations, and rotatory inertia.

TL;DR: In this paper, nano-particle additives such as carbon black and nanoclay were mixed with epoxy resin to improve the fracture toughness of fiber-reinforced composites, and they measured the single edge notched bend specimen at the room (25°C) and cryogenic temperature (−150°C).

TL;DR: The Cooperative Research Centre for Advanced Composite Structures (CRC-ACS) is leading a currently running collaborative project to develop a methodology for determining mechanical behaviour and failure in composite structures as discussed by the authors.

TL;DR: In this paper, layered and sandwich composite materials, comprising of polyurea (PU) and E-glass vinyl ester (EVE) composite are experimentally evaluated for effective blast resistance using a shock tube.

TL;DR: In this article, a third order zigzag theory based model for layered functionally graded beams in conjunction with the modified rule of mixtures (MROM) for effective modulus of elasticity is validated through experiments for static and free vibration response.

TL;DR: Different applications of fiber reinforced polymer composites (FRPCs) for external strengthening in civil construction are reviewed in this paper, where experimental as well as analytical and numerical research contributions have been focussed in the review.

TL;DR: In this article, the authors present a review of the literature in the field of 2D Braiding in order to outline advantages and disadvantages of the process, common preform impregnation techniques, and common stiffness critical applications.

TL;DR: In this article, the authors presented a theoretical investigation in free vibration and elastic buckling of beams made of functionally graded materials (FGMs) containing open edge cracks by using Bernoulli-Euler beam theory and the rotational spring model.

TL;DR: In this paper, exact solutions for bending and free vibration of functionally graded beams resting on a Winkler-Pasternak elastic foundation are presented based on the two-dimensional theory of elasticity.

TL;DR: In this paper, an investigation of the low velocity impact on laminated composite thin disks of epoxy resin reinforced by carbon fiber is presented, where the influence of stacking sequence and energy impact was investigated using load-time histories, displacement-time history and energy-time cycle histories as well as images from NDE.

TL;DR: In this article, the authors discuss the thickness locking mechanism, also known as Poisson locking, which is caused by the use of simplified kinematic assumptions in the plate analysis, and introduce penalty numbers to force ϵ zz ǫ = 0 condition in the 3D solution and refined plate theories.

TL;DR: In this paper, the authors developed a synthesis of damping analysis of laminate materials, laminates with interleaved viscoelastic layers and sandwich materials, considering finite element analysis based on laminate theory taking into account the transverse shear effects.

TL;DR: In this paper, a series of fully scaled tests on unidirectional and quasi-isotropic carbon fiber-epoxy has been carried out, and it was shown that transverse cracking and edge delamination caused premature failure in all cases.

TL;DR: In this paper, first-order shear deformation plate models for modeling structures made of functionally graded materials are proposed and the identification of transverse shear factors is investigated through these models by energy equivalence.

TL;DR: In this article, an attempt has been made to analyze and assess the various kinematics and theories used for the modeling of sandwich composites and a unified kinematic formulation is then proposed.

TL;DR: In this article, the authors investigated several strength properties as well as the damage resistance properties of carbon fiber/toughened epoxy composite laminates for the applicability of thin-ply prepregs to aircraft structures.

TL;DR: In this paper, the authors demonstrate the influence of titanium hybridization on specific characteristics of CFRP-materials, thus proving the mechanical potential of composite composite joints when used as an advanced reinforcement technique for highly loaded composite joints.

TL;DR: In this paper, an overall view on impact response of woven fabric composite plates made of E-glass as reinforcing material and epoxy resin as matrix material was presented, and the damage process of individual specimens can be reconstructed from comparing the corresponding load-deflection curves, energy profile diagram and images of damaged specimens.

TL;DR: In this article, the degradation of GFRP composite using an accelerated aging method and its influence on the tensile properties was investigated, and it was shown that after conditioning, the degradation was significantly reduced after conditioning.

TL;DR: A validated simulation methodology has been developed to support the bird-strike certification of the carbon fiber epoxy composite, moveable trailing edge (MTE) of the Boeing 787 Dreamliner.

TL;DR: In this article, the displacement component is expanded along the thickness of the plate by using a powerful compact formulation, and infinite different types of expansions can be independently used for the displacements ux, uy and uz.

TL;DR: In this article, a study of static deformations and free vibration of shear flexible isotropic and laminated composite plates is presented, where a layerwise theory for laminated or sandwich plates is used.

TL;DR: In this article, the effects of cycles of salt fog, temperature and moisture as well as immersion in salt water on the bending response of beams externally reinforced with GFRP or CFRP, especially on bond between FRP reinforcement and concrete, were investigated.

TL;DR: In this article, the failure response of aluminium sandwich panels subjected to low-velocity impact is discussed and a three-dimensional geometrically correct finite element model of the honeycomb sandwich plate and a rigid impactor is developed using the commercial software, ABAQUS.

TL;DR: In this article, the analysis of thickness locking mechanism, which is a plate/shell-theory mechanism, caused by the use of simplified kinematic assumptions, is extended to shell geometries.

TL;DR: In this paper, a three-noded mechanical beam finite element is designed for the analysis of laminated beams, which is based on a sinus distribution with layer re�nement.

TL;DR: In this paper, the ballistic limit velocity of a boron carbide ceramic and a Kevlar 49 fiber composite material with constant thickness has been obtained and the Heterington equation has been verified for constant thickness of the armor.

TL;DR: In this paper, the authors evaluate the contribution of CFRP to mechanical and energetic performance and to the modification of the cracking pattern on short columns during earthquakes, and evaluate the efficiency of such reinforcement by measuring the gain in terms of load and ductility.

TL;DR: In this paper, the compaction behavior of yarns in bending and transverse compression were measured using Kawabata Evaluation System, and used for computing the potential energy stored in individual yarn segments within a preform.