The New Obama fuel mileage requirements for cars are music to the ears of the American steel industry. That might seem odd. After all, aren’t a lot of those concept cars rolled out of Detroit every year loaded with plastic and other lightweight materials options? Yes, but a lot of those concepts remain concepts. Take the Chevy Volt for example. It was first shown at the Detroit Auto Show in January 2007 with a polycarbonate roof and a hood made from recycled soda bottles. Once GM decided to actually make the Volt, those two ideas were quickly dropped. Too impractical. Too expensive. A study recently released by the American Iron and Steel Institute predicts a 10 percent annual growth rate in the use of advanced high-strength steels through 2020 as auto makers try to meet tough new fuel standards.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
This year's Dupont-sponsored WardsAuto survey of automotive designers and other engineers shows lightweighting dominates the discussion. But which materials will help them meet the 2025 CAFE standards are not entirely clear.
Artificially created metamaterials are already appearing in niche applications like electronics, communications, and defense, says a new report from Lux Research. How quickly they become mainstream depends on cost-effective manufacturing methods, which will include additive manufacturing.
SpaceX has 3D printed and successfully hot-fired a SuperDraco engine chamber made of Inconel, a high-performance superalloy, using direct metal laser sintering (DMLS). The company's first 3D-printed rocket engine part, a main oxidizer valve body for the Falcon 9 rocket, launched in January and is now qualified on all Falcon 9 flights.
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