Abstract In this study, epoxy hybrid nanocomposites reinforced by carbon fibers (CFs) were fabricated a filament winding. To improve out-of-plane (transverse) mechanical properties, 0.5 and 1.0 Wt.% multi-walled nanotubes (MWCNTs) embedded into epoxy/CF composites. The MWCNTs well dispersed the resin without using any additives. transverse properties of epoxy/MWCNT/CF evaluated tensile test in ...

This study proposes a new theoretical model for high-velocity impact in two kinds of targets, Kevlar/elastomer and Kevlar/epoxy composites, comprehensively discusses compares these. In this analysis, with the aid hyperelasticity theory, energy absorption equations are derived based on linear nonlinear behavior constituents to assess dependence ballistic limit interaction first, second, third, f...

This paper describes a new approach for detection of curvilinear regions. These features detection can be useful for any matching based algorithm such as stereoscopic vision. Our detector is based on curvilinear structure model, defined observing the real world. Then, we propose a multi-scale search algorithm of curvilinear regions and we report some preliminary results.

The inconsistencies accompanied with material properties tipically cause the rise of delamination risk in composites made of different types of glass and crabon fibers. In this study, the delamination of a composite beam reinforced with a carbon layer under bending load is investigated. To this end, a small piece of a wind turbine blade root in the form of a heterogeneous laminated plate is sim...

Abstract In this paper, the stamp forming process of a U-shaped cross-section channel with sharp corners composite laminates including aluminum sheet and polyvinyl chloride (PVC) reinforced 3D-fiberglass was investigated. The were produced by manual layup arrangement fibers different angles [0°/90°] [± 45°] degrees using hot press. samples carried out at temperatures 25, 80, 120, 160°C velociti...

Fiber-reinforced plastic (FRP) composite laminates have excellent mechanical properties, corrosion resistance, and designability thus are widely used in various engineering fields. However, their interlayer performance is relatively poor due to no fiber reinforcement between the laminate layers. These layers adhered through resin bonding only, caused during usage, which results material delamin...

The paper presents manufacture of C/C-SiC composite materials by wet filament winding C fibers with a water-based phenolic resin subsequent curing via autoclave as well pyrolysis and liquid silicon infiltration (LSI). Almost dense different angles ranging from ±15° to ±75° could be obtained porosities lower than 3% densities in the range 2 g/cm3. Thermomechanical characterization tensile testin...

The fracture toughness of a polymer-metal laminate composite is obtained by mechanical testing of a specimen containing a pre-crack. The laminate is a material used for packaging. It consists of a thin aluminium foil and a polymer coating. A centre cracked panel test geometry is used. Each of the layers forming the laminate is also tested separately. The result is compared with the measured fra...

Embedding optical fibers sensors into composite structures for Structural Health Monitoring purposes is not just one of the most attractive solutions contributing to smart structures, but also the optimum integration approach that insures maximum protection and integrity of the fibers. Nevertheless this intended integration level still remains an industrial challenge since today there is no mat...

Thermal effects on the pin-bearing behavior of an IM7/PETI5 composite laminate are studied comprehensively. A hypothesis presents factors influencing a change in pin-bearing strength with a change in temperature for a given joint design. The factors include the change in the state of residual cure stress, the material properties, and the fastener fit with a change in temperature. Experiments ar...