In this study static and fatigue behaviours of honeycomb sandwich composites, made of aramide fibres and aluminium cores, are investigated through four-point bending tests. Damage and failure modes are reported and discussed. Global and local parameters were considered to evaluate the fatigue life of the analysed sandwich composites. Effects of core densities and the cell orientation (L or W) o...

An evaluation of the stability and accuracy of modern physiologic pressure measuring systems is reported with a brief review of some of the problems of catheter pressure recording. Evaluation of stability consisted of measuring the drift of the baseline, and of the calibration factors of the gage and amplifier combination with time and temperatures change. Evaluation of the accuracy of these pr...

In this paper, we report a compact and ultra-wide band antenna on a flexible substrate using the 5-(4-(perfluorohexyl)phenyl)thiophene-2-carbaldehyde compound for microwave imaging. In contrast to other microwave based imaging systems, such as an array of 16 antennas, we proposed a bi-static radar based imaging system consisting of two omnidirectional antennas, which reduces complexity and the ...

We show that the Gauss-Bonnet term is the only consistent curvature squared interaction in the Randall-Sundrum model and various static and inflationary solutions can be found. And from metric perturbations around the RS background with a single brane embedded, we also show that for a vanishing Gauss-Bonnet coefficient, the brane bending allows us to reproduce the 4D Einstein gravity at the lin...

This work investigates the influence of Lorentz symmetry breaking in bending angle massive particles and light for bumblebee black hole solutions. The solutions analyzed break due to a non-zero vacuum expectation value field. We use Ishihara method, which allows us study finite distances, it is applicable non-asymptotically flat spacetimes when considering receiver viewpoint. In order analyze d...