Additive manufacturing, or 3D printing, is a promising step forward for cement-based materials in construction, but one limitation is possible weaknesses presented by the interfaces between the additive layers. Researchers at Purdue University are pursuing a solution with 3D printing in a form that mimics the self-repair capacity of arthropod shells by actively controlling cracking through twisting and displacement of the stress caused by the load the structure is bearing.
An electrical current coursing through electrodes used in some labs on a chip can damage the blood cells being examined, which can result in compromised test results. Engineers at Michigan Technological University are using a 50-nanometer layer of hafnium oxide to shield a chip's electrodes, taking advantage of the material's high dielectric constant that allows the electric field to reach the blood cells even as a physical barrier protects them from the electrodes.
Artificial intelligence is more likely to supplement human intelligence in the maintenance and service industry than make human workers obsolete, writes Bas de Vos. Meanwhile, AI is poised to reduce machine failure rates in manufacturing and aid maintenance and service capabilities through predictive algorithms.
ASME's History and Heritage (H&H) Committee recently recognized longtime ASME member Jack Connors with its 2018 Engineer-Historian Award for his book The Engines of Pratt & Whitney: A Technical History. Approximately 75 people -- including Connors' colleagues from Pratt & Whitney, members of the ASME H&H Committee and members of the ASME Hartford Section -- attended the award presentation ceremony, which was held Oct. 25 at the New England Air Museum in Windsor Locks, Conn.
Fluoride-based batteries that last much longer than the lithium-ion variety may be in store, thanks to research at Caltech, the Honda Research Institute, JPL and Lawrence Berkeley National Lab. Fluoride has long been known to possess qualities superior to lithium but has been difficult to stabilize for that purpose, a problem now solved with development of an electrolyte liquid known as bis(2,2,2-trifluoroethyl)ether.
On Oct. 15 and 16, the ASME Industry Advisory Board held its fall 2018 meeting at the headquarters of multinational information technology company HP Inc. in Palo Alto, Calif. Twenty IAB members attended the meeting, which was hosted by Tommy Gardner, chair of the ASME IAB and chief technology officer at HP Federal. The event also marked the first IAB meeting for ASME Executive Director Tom Costabile, who attended with several key members of his executive team.
The US Navy made a show of force in the South China Sea in the days leading up to the G-20 summit in Argentina. The guided-missile cruiser USS Chancellorsville approached the disputed Paracel Islands in what was termed a "freedom of navigation operation."
The Navy's 2nd Fleet was re-established in August, and its commander is warning of activity by Russian submarines. "Let's be frank, the Russian undersea threat is real," Vice Adm. Andrew "Woody" Lewis said at a maritime security event, adding that his fleet will attain full operational capability next year.
A disappointing range means the costly Advanced Gun System aboard the Navy's Zumwalt-class destroyers may be replaced. "We will be developing either the round that goes with that gun or what we are going to do with that space if we decide to remove that gun in the future," Vice Adm. William Merz told a Senate subcommittee, adding that "the ship is doing fine, on track to be operational in 2021 in the fleet."
Raytheon Missile Systems will be carrying out repair and maintenance work on SM-2 and SM-6 Standard surface-to-air missiles under a $37.3 million Navy contract. Work is projected to be completed by November.
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