Showing papers in "Composite Structures in 1997"

TL;DR: A review of composite materials for crashworthiness applications can be found in this article, where a selection of methods for predicting composite material energy absorption capability is presented and consideration is given to some of the more practical aspects of employing composite materials in crashworthiness purposes.

TL;DR: In this paper, a method based on a combination of micromechanical and structural approaches is employed to analyze the elastic bifurcational buckling of functionally graded plates under in-plane compressive loading.

TL;DR: In this paper, the state-space concept in conjunction with the Jordan canonical form is presented to solve the governing equations for the bending of cross-ply laminated composite beams, and the classical, first-order, second-order and third-order theories have been used in the analysis.

TL;DR: In this article, a model is proposed that is capable of predicting the stiffness degradation of composite laminates during fatigue loading based on an assumed relationship between the failure stiffness and the applied stress.

TL;DR: In this paper, Cararrera et al. have reviewed existing single-layer models and concluded that they are of limited value to analyze problems in which an accurate description of the transverse normal stress and related consequences is requested; they concluded that such description would require the use of layer-wise theories.

TL;DR: In this paper, a rule-of-mixture approach is presented for predicting the mechanical properties of fiber- and particle-reinforced composite materials, where the composite material is composed through a hypothetical process in which the matrix is reinforced one by one with reinforcing materials (fibers or particles).

TL;DR: In this paper, the authors present an up-to-date account of the works in which the differential quadrature method has been employed for the analysis of laminated composite structures.

TL;DR: In this article, effective transverse shear moduli in the principal material directions of corrugated board were examined experimentally for five corrugation board types using the ASTM block shear test and the three-point bend test.

TL;DR: In this paper, an analytical solution of refined beam theories is developed to study the buckling behavior of cross-ply rectangular beams with arbitrary boundary conditions, and the state space concept in conjunction with Jordan canonical form is used to solve exactly the governing equations of buckling problems.

TL;DR: In this paper, a hybrid one-piece drive shaft composed of carbon fiberepoxy composite and aluminum tube was manufactured by co-curing the carbon fiber on the aluminum tube.

TL;DR: In this paper, the effect of aspect ratio on the strength and stiffness of laminated composite plates is studied, and the stiffness reduction is carried out at the Gauss points of the finite element mesh depending on the mode of failure.

TL;DR: In this article, the performance of various shear-deformation laminated-plate theories was compared for two problems for which an exact elasticity solution has been given by Pagano.

TL;DR: In this article, a higher-order refined theory for composite and sandwich beams is presented, which incorporates cubic axial, transverse shear and quadratic transverse normal strain components in the basic formulation, thus modeling the warping of cross section accurately and eliminating the need for a shear correction coefficient.

TL;DR: In this article, the problem of local bending in sandwich panels with a soft core was investigated by conducting a series of photoelastic experiments, and the experimental results were compared with analytical results obtained using the high-order sandwich panel theory (HSAPT).

TL;DR: In this article, the effect of short-term environmental exposure on the response of in situ formed externally composite strengthened concrete is investigated, and measured response from static loading is described in terms of environmental degradation of composite and composite-concrete interface.

TL;DR: In this article, the side-door impact beam for passenger cars was developed using glass-fibre-reinforced composite materials as metals usually have a lower capacity of impact absorption energy at low temperature compared with that of glass-based composite materials.

TL;DR: In this paper, a series of impact and compression after impact tests were carried out on composite laminates made of carbon fiber reinforced epoxy resin matrix, and four stacking sequences representative of four different elastic behaviours were used.

TL;DR: In this article, the optimum bolted joints for hybrid composite materials composed of glass-epoxy and carbon-epoxide under tensile loading were investigated. And the design parameters considered for the bolted joints were ply angle, stacking sequence, the ratio of glass epoxy to carbon epoxy, the outer diameters of washers and the clamping pressure.

TL;DR: In this paper, a high-order sandwich plate theory is introduced for the analysis of hard points in the form of inserts, and special attention is focused on the problem of sandwich plates with inserts of the "through-the-thickness" and "fully potted" types.

TL;DR: In this article, size effects in tensile failure were investigated by means of tensile and four-point bending tests, and the relationship between the tensile strength and flexural results could all be fitted satisfactorily with a Weibull strength model.

TL;DR: In this paper, the relation between the cutting force and the surface roughness of a drilled hole wall in small-diameter drilling of GFRP for a printed wiring board was investigated.

TL;DR: In this article, a three-dimensional finite element analysis is performed and the stress distributions for symmetric cross-ply laminates are presented in three ways: through the thickness, along radial lines away from the hole, and around the hole.

TL;DR: In this paper, the buckling and free vibration of stepped laminated composite beams were studied using simple higher-order theory (SHOT), which assumes a cubic distribution for the displacement field through the thickness.

TL;DR: In this article, a comprehensive experimental and analytical approach is presented to study flexural-torsional buckling behavior of full-size pultruded fiber-reinforced plastic (FRP) I-beams.

TL;DR: In this paper, the dynamic response of a hollow composite cylinder, under plane-strain conditions, subjected to an external blast loading, with and without fluid-coupling effects, was investigated using finite-element analysis and effective modulus theory.

TL;DR: In this article, a beam finite element based on a new discrete-layer laminated beam theory with sublaminate first-order zig-zag kinematic assumptions is presented and assessed for thick and thin laminated beams.

TL;DR: In this article, the effects of volume fraction of carbon fiber on wear behavior of hybrid composites was investigated and the wear behavior was characterized by the dry spindle wear test under various sliding speeds.

TL;DR: In this paper, a method for identifying elastic and damping properties of composite laminates by using vibration test data is presented, based on a finite element model which considers the effect of transverse shear deformation and hysteretic damping.

TL;DR: In this article, an eigenfunction expansion method is developed to obtain three-dimensional asymptotic stress fields in the vicinity of the front of a semi-infinite crack along a bimaterial interface of a plate subjected to far-field extension and bending.

TL;DR: In this article, the manufacturing process of an injection molded polycarbonate/ poly(butylene terephthalate) automobile bumper was optimized, using Taguchi's method, to eliminate silver streaks on the surface of the product.