This paper portrays the various combinations of nanomaterials and matrix materials which were used to fabricate the nanocomposite laminates with and without fiber. An in-depth analysis was made on the various ways of preparing the nano influenced matrix and composite panels. In addition to this, an effort has been made to afford an outline of the impact of nanofillers within the matrix from the...

Synchrotron radiation computed tomography (SRCT) has been used to study notch-tip damage in (90/0)S and (90/+45/-45/0)S carbon fibre-epoxy laminates. By exploiting near-field Fresnel diffraction (edge detection regime), high quality 3D images of cracks and delaminations have been obtained to a resolution of less than 1μm. 3D strain field mapping is facilitated by feature tracking/ image correla...

A wide range of composite material forms are finding use in today’s aerospace, automotive, and other transportation industry segments. The Boeing 787 commercial airliner, unveiled in 2007, features over 50% carbon fiber composites by structural weight, while the entire structure of the Lamborghini Sesto Elemento supercar, unveiled in 2011, is made exclusively from carbon fiber composites [1-2]....

This paper presents a multilayered/multidirector and shear-deformable finite-element formulation of shells for the analysis of composite laminates. The displacement field is assumed continuous across the finiteelement layers through the composite thickness. The rotation field is, however, layerwise continuous and is assumed discontinuous across these layers. This kinematic hypothesis results in...

A study has been made of the fatigue-crack propagation properties of a series of laminated Nbreinforced Nb3Al intermetallic-matrix composites with varying microstructural scale but nominally identical reinforcement volume fraction (20 pct Nb). It was found that resistance to fatigue-crack growth improved with increasing metallic layer thickness (in the range 50 to 250 mm) both in the crack-divi...

The purpose of this study is to review many of the available guidelines for Polymer composite materials. Guide lines for failure mode, laminates orientation, winding angle, water absorption, as they strongly influence the mechanical properties of composite materials. The present review is focused on composite laminates made of glass, carbon, graphite, hybrid and natural fiber composites, since ...

Laminated Si/SiC ceramics were synthesized from porous preforms of biogenous carbon impregnated with Si slurry at a temperature of 1500 °C for 2 h. Due to the capillarity infiltration with Si, both intrinsic micro- and macrostructure in the carbon preform were retained within the final ceramics. The SEM micrographs indicate that the final material exhibits a distinguished laminar structure with...

Natural fibers are receiving considerable attention as substitutes for synthetic fiber reinforcements such as glass in polymer due to their low density, low cost, acceptable specific strength, reduced tool wear and respiratory irritation and renewable resources. The fibers are not uniformly distributed in the randomly oriented fiber reinforced hybrid composites due to manual lay-up and fibers a...

This paper is devoted to minimum stress design in structural optimization. The homogenization method is extended to such a framework and yields an efficient numerical algorithm for topology optimization. The main idea is to use a partial relaxation of the problem obtained by introducing special microstructures which are sequential laminated composites. Indeed, the so-called corrector terms of s...

North American composites including laminated veneer lumber, oriented strandboard, and medium density fiberboard were treated by vapor boron technology and subsequently tested in static bending. Tensile properties were also determined for the two composite boards. The study was designed as 3 x 2 factorial with three treatment levels and two mill locations for each composite type. In general, mi...