We derive the first dynamic correction to the effective refractive index for a square array of cylinders (of finite or infinite refractive index), subject to a low-frequency incident radiation. This correction also imposes constraints on the wave number region for which the Lorentz-Lorenz...

In the current work, kenaf fibers reinforced epoxy (KFRE) composite was developed. Adhesive wear and frictional characteristics of KFRE were investigated under wet contact conditions at different fiber orientations, considering different applied loads (50–200 N) and sliding distances (0–30...

We apply the Rayleigh method to derive a formulation yielding the effective dielectric tensor of a periodic composite consisting of an array of elliptical cylinders placed in a matrix of unit dielectric constant. We consider two types of composites having this structure: dilute noncritical and...

In this paper the harmonization of new wind turbine rotor blades development is given as well as the analysis of behavior by verification testing for a wind turbine rotor blade of composite materials. The design, fabrication, the status of wind energy standards and the analysis of behavior by...

Thermal energy storage is an expanding field within the subject of renewable energy technologies. After a listing of the different possibilities available for energy storage, this paper provides a comparison of various materials for High Temperature Thermal Energy Storage (HTTS). Several...

New composite material for storage and transformation of heat of a temperature range of 250–350 °C has been synthesized by precipitation of magnesium hydroxide Mg(OH)2 in the pores of expanded vermiculite. The hydroxide is stabilized inside the pores as irregular sticks of 1–3 μm in size...

Among other applications, the study of thermal properties of large networks of carbon nanoparticles may have a critical impact in loss-free, more compact and efficient thermal storage systems, as well as thermally conducting polymeric materials for innovative low-cost heat exchangers. In this...

We study the macroscopic conduction properties of large but finite binary networks with conducting bonds. By taking a combination of a spectral and an averaging based approach we derive asymptotic formulae for the conduction in terms of the component proportions p and the total number of...

Effective medium theories (EMTs) along with percolation theory allow the characterization of the electromagnetic properties of binary composite mixtures at a frequency when the scale of a particle size allows the quasi-static limit approximation. These theories formulate an effective...

Describes the benefits of using robots for advanced composite lay‐up procedures. Particular emphasis is on aerospace structures. Argues that the use of robots now makes viable many fabrication operations that were previously too expensive, and highlights the improved quality afforded by...