Since tubes are widely used for different industrial applications, processing of tubes by the Severe Plastic Deformation (SPD) method has been the target of different attempts. Among these attempts, development of SPD processes for tubes based on Equal Channel Angular Pressing (ECAP) has been more successful. As an illustration, Tube Channel Pressing (TCP) has been presented as an attractive SP...

in this paper, first a sensitivity analysis of parameters affecting the performance of the steam generator is performed. this process includes the pinch temperature difference and the gas velocity (width of the hrsg) as the operating parameter and geometrical parameters (fin’s thickness, fin’s height, number of fins in each inch, tube transverse pitch) for each pressure parts is carried out, an...

In rolls manufactured from first bent and then welded sheets of steel, the asymmetric distribution mass due to weld seam as well imperfections geometry bending may cause roll cross-section roundness profiles deform centrifugal forces when is accelerated rotate at its operating speed. This effect known dynamic roll. previous research, it has been shown that possible measure in speed compensate f...

Abstract Important developments have been achieved for self-pierce riveting with the utilization of a double-sided tubular rivet that is able to join sheets similar and dissimilar materials different larger thicknesses, while remaining hidden in-between after joining process completed. Nevertheless, performance those joints can still be improved by an optimization parameters, mainly chamfered a...

Graph theory based methods are powerful means for representing structural systems so that their geometry and topology can be understood clearly. The combination of graph theory based methods and some metaheuristics can offer effective solutions for complex engineering optimization problems. This paper presents a Charged System Search (CSS) algorithm for the free shape optimizations of thin-wall...