Utron Inc. has developed a combustion gas chamber to quickly compress metallic powders into small parts, and eventually mass-produce small and big components based on the process. It's one of many efforts by powder-metallurgy scientists to take talcum, powder-size grains of metals and turn them into pressed parts. Current methods use pressure and heat to slowly press out small batches of parts. Making large parts in this fashion requires long exposure to heat, with possible undesirable molecular changes resulting. With the combustion gas chamber process, Utron hopes to mass-produce parts "on millisecond time scales," according to Dr. Arul Mozhie, Utron senior scientist. The Utron process evolved from pulsed power and high-pressure combustion technologies developed for hypervelocity launch and other defense applications. The process uses high-pressure pulses, produced by the controlled combustion of propellants, to consolidate the tiny copper and steel powders Utron made using a higher momentum flux gas medium. The work was pursued under a contract awarded by the Ballistic Missile Defense Organization. FAX (703) 369-5298
The first Tacoma Narrows Bridge was a Washington State suspension bridge that opened in 1940 and spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula. It opened to traffic on July 1, 1940, and dramatically collapsed into Puget Sound on November 7, just four months after it opened.
Noting that we now live in an era of “confusion and ill-conceived stuff,” Ammunition design studio founder Robert Brunner, speaking at Gigaom Roadmap, said that by adding connectivity to everything and its mother, we aren't necessarily doing ourselves any favors, with many ‘things’ just fine in their unconnected state.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.