It has been five years and literally tens of thousands of man-hours of work. Finally, the American Society for Testing and Materials (ASTM) F-24 technical committee has wrestled a new standard for the amusement park industry from the clutches of a variety of task forces evaluating everything from appropriate restraint devices to—for the first time—g-force limits. High g-forces have been thought to pose the risk of brain injuries. This standard is unique not only for its comprehensiveness, but also its global reach (not to mention that consensus building always takes time.) "It was a huge effort, really the biggest single standard that the amusement ride and device committee has worked on in its 25 years," says Greg Hale, chief of safety at Walt Disney World Resort and an outspoken advocate of safety standards. Hale and co-workers devoted hundreds of hours of their own time to this effort. Known as the Standard Practice for the Design of Amusement Rides and Devices—Z9591Z to those in the know—the standard piggybacks on an existing ASTM standard, but is unique in that it addresses detailed design criteria intended to assist engineers in designing rides that make people only feel like they are in peril. Active committee members hail from Australia, Bahrain, Brazil, Canada, France, Germany, India, Italy, Japan, Russia, Switzerland, The Netherlands, the U.K., and the U.S.—making for a truly global effort and ensuring that the best design practices from around the world made their way into the standard. Guess it's a small world, after all.
Researchers have been working on a number of alternative chemistries to lithium-ion for next-gen batteries, silicon-air among them. However, while the technology has been viewed as promising and cost-effective, to date researchers haven’t managed to develop a battery of this chemistry with a viable running time -- until now.
Norway-based additive manufacturing company Norsk Titanium is building what it says is the first industrial-scale 3D printing plant in the world for making aerospace-grade metal components. The New York state plant will produce 400 metric tons each year of aerospace-grade, structural titanium parts.
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