Two aeroacoustic wind tunnels have been inaugurated by Renault (www.renault.com), Peugeot Citroen (www.peugeot.com), and the French Institute of Engineering Studies in Saint-Cyr l'Ecole in France, to investigate on the reduction of the aerodynamic drag of vehicles, aerodynamic noise for the comfort of passengers, dynamic stability of the vehicle, as well as the effects of side winds. The main tunnel will measure 258 ft2 with a ¾ open jet design that is large enough to accommodate minivans. Wind velocity in the main tunnel can reach as high as 149 mph.
Producing high-quality end-production metal parts with additive manufacturing for applications like aerospace and medical requires very tightly controlled processes and materials. New standards and guidelines for machines and processes, materials, and printed parts are underway from bodies such as ASTM International.
Engineers at the University of San Diego’s Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a person’s sweat.
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