The use of adhesive joints has increased in recent decades due to their competitive features comparison with other joining methods. They can be used specific applications where there is no possibility alternative connection techniques. Adhesive bonding was assemble the prototype a high-temperature car radiator (operated up 125 °C) total 12,240 plastic tubes. This work aims estimate shear streng...

Transition radiation detectors (TRDs) have been used to identify high-energy particles (in particular, separate electrons from heavier particles) in accelerator experiments. In space, they cosmic-ray and measure the energies of nuclei. To date, radiators consisted regular configurations foils with fixed values foil thickness spacing (or foam or fiber comparable average dimensions) that operated...

This paper describes results of a field measurement in which the feasibility low temperature heating and performance improvement by means convection enhancement around radiators were examined radiant with plastic multi-tubular an existing reinforced concrete house without thermal insulation. Radiant can make both room air temperatures MRTs 22〜25℃ PMVs 0 〜± 0.5 supply being 30〜36℃. Convection sm...

In this paper, a reduced computational fluid dynamics (CFD) model is proposed for determining the total heat dissipation and oil temperature distribution of transformer radiators in natural air (ONAN) cooling mode. radiator CFD model, flow simulation replaced with an optimized transfer coefficient ( ...

The emerging field of topological photonics has extended our capability to control and manipulate electromagnetic waves. Thus far, however, research focused on realizing defect-immune waveguides for on-chip communication. Making similar advancement antennas, which are an integral component crucial the performance wireless devices, could lead a parallel impact In particular, requirement impedanc...

The application of new metaheuristic approach, Firefly algorithm, for the thinning of large multiple Concentric Circular dipole arrays is presented. A nine-ring Uniform Circular antenna array with central element feeding is considered. To analyze the effect of thinning, optimization is carried out with and without pre fixing the percentage value of thinning. The performance of the array in term...

A general formula is derived for the scattering cross section of a passive n-element linear array consisting of isotropic radiators. When all the reactances are tuned out and scattering in the mirror direction is investigated, it is found that A,,, the relative scattering cross section is equal to the square of the maximum gain the array can produce. As a consequence, for forward scattering in ...

Fractal shaped antennas and fractal miniaturized elements are becoming a promising new family of devices with a wealth of potentially useful applications [1]. Owing to the facility of manufacturing fractal devices (the metallisation process of fractal antennas up to a few iterations of the recursive process that generates the fractal structure is a relatively simple task), several different pro...