Content tagged with Government/Defense
posted in August 2014
ASTM Proposes New Standards for Metal 3D Printing
Engineering Materials 8/29/2014
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.
Video: 1,000 Swarming Robots Self-Assemble
Engineering Materials 8/28/2014
The biggest robot swarm to date is made of 1,000 Kilobots, which can follow simple rules to autonomously assemble into predetermined shapes. Hardware and software are open-source.
Update: Converting Plastics to Energy Could Boost US Reserves
Engineering Materials 8/27/2014
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.
Report: Metamaterials Will Partly Depend on Additive Manufacturing
Engineering Materials 8/20/2014
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 Reveals 3D-Printed Rocket Engine Parts
Engineering Materials 8/19/2014
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.
How to Machine Aerospace-Grade Composites
UK researchers have come up with a method for machining aerospace-grade, carbon fiber-reinforced composites, along with high-strength aerospace alloys, using an ultrasonically assisted machining device. It also works on high-strength aerospace alloys.
Can Plastic Bearings Outperform Metal Ones?
Plastic bearings are replacing metal in some pretty tough jobs. Sometimes they're equally effective and reliable, and sometimes they actually outperform those parts. We'll tell you all about how this is possible in an upcoming Design News Focus on Fundamentals course.
Update: Intelligent Composites for Structural Monitoring
Engineering Materials 8/5/2014
Smart composites that let the material's structural health be monitored automatically and continuously are getting closer to reality. R&D partners in an EU-sponsored project have demonstrated what they say is the first complete, miniaturized, fiber-optic sensor system entirely embedded inside a fiber-reinforced composite.
The Industrial Internet of Things may be going off the deep end in connecting everything on the plant floor. Some machines, bearings, or conveyors simply donít need to be monitored -- even if they can be.
Wind turbines already are imposing structures that stretch high into the sky, but an engineering graduate student at the University of Notre Dame wants to make them even taller to reduce energy costs and improve efficiency.
Ray Zinn, Silicon Valley's longest-running CEO, shares some of his thoughts on innovation, procrastination, and why you shouldn't put customers first.
Researchers at American University have produced chemically active structures that, not unlike living things, can actually do things on their own without an external power.
Former DARPA official and Google executive Dr. Kaigham Gabriel believes sensor companies think too much like suppliers and need to bring their products closer to the consumer.
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