A comparative study of the effect melt spinning on electrochemical properties C14 and C15 AB2 alloys has been performed. The wheel speeds 630, 2100, 4100 cm/s were applied during rapid solidification both alloys. structural analysis formed phases was performed by X-ray powder diffraction (XRD), while their microstructural morphology studied scanning electron microscopy (SEM). In a tremendous gr...

in this article using comparative multi-purpose algorithm of pso, optimum capacity of new resources and their spinning storage is defined. spinning reserve requirements and optimized to maximize profit per unit is determined according to uncertainty. in fact by increasing the level of cost reservation, power supply increases but penalty of blackout decreases. in this paper in has been tried to ...

the suppression of the regenerative chatter phenomenon in turning process via the variation of the frequency and amplitude of the spindle motor excitation is carried out in this research. a programmable inverter is employed for variable periodic excitation of the spindle motor. a set of turning experiments is designed and performed on a number of conical work pieces both in constant spindle spe...

Understanding some of the basic wind engineering concepts helps one understand the chimney’s response. The circular cross section of the steel chimney characteristically provides aerodynamic lift perpendicular to the wind direction. Knowing how to predict and prevent these adverse responses is of critical importance to steel chimney design. I. STATIC WIND FORCES The force exerted by wind varies...