Since the global supply chain for additive manufacturing (AM)-- also called 3-D printing-- requires companies to share CAD files within the organization or with outside parties via email or cloud, intellectual-property thieves and malefactors have many opportunities to filch a manufacturer's design files to produce counterfeit parts. Researchers have discovered ways for manufacturers to turn the tables on thieves by deliberately embedding hidden flaws in CAD files to thwart intellectual property theft.
Recent interest in lignocellulosic fibers was devoted to improve the mechanical properties of polymers. But one of their main limitation is the poor compatibility and adhesion between these polar/hydrophilic fibers with most commercial resins being non-polar and hydrophobic. This problem has been partially solved using physical and chemical surface treatments, and/or the addition of a coupling agent (phase compatibilization).
Two B-25 bombers associated with American servicemen missing in action from World War II were recently documented in the waters off Papua New Guinea by Project Recover -- a collaborative team of marine scientists, archaeologists and volunteers who have combined efforts to locate aircraft and associated MIAs from World War II.
Significant commercial investment in wearable vision systems for personal communications and entertainment is driving rapid advances in miniature optoelectronics components and consumer-driven applications. A special section in this month's issue of Optical Engineering, published by SPIE, the international society for optics and photonics, aims to help boost progress across development in automotive, industrial, and military applications.
This paper presents a 'parasitic robot system' whereby locomotion abilities of an animal are applied to a robot task. We chose a turtle as our first host animal and designed a parasitic robot that can perform 'operant conditioning.' The parasitic robot, which is attached to the turtle, can induce object-tracking behavior of the turtle toward a light-emitting diode (LED) and positively reinforce the behavior through repeated stimulus-response interaction.
A team of physicists has discovered that a coating of lithium oxide on the inside of fusion machines known as tokamaks absorbs as much deuterium as pure lithium does.
At the International Conference on Robotics and Automation later this month, researchers from MIT's Computer Science and Artificial Intelligence Laboratory (CSAIL) and ETH Zurich will present a system that allows a director to specify a shot's framing -- which figures or faces appear where, at what distance. Then, on the fly, it generates control signals for a camera-equipped autonomous drone, which preserve that framing as the actors move.
Engineers have known for some time that calcium chloride salt, commonly used as deicer, reacts with the calcium hydroxide in concrete to form a chemical byproduct that causes roadways to crumble. A civil engineer from Drexel University is working on a new recipe for concrete, using cast-off products from furnaces, that can hold its own against the forces of chemical erosion.
The Wyss Institute for Biologically Inspired Engineering and the University of Zurich announced today a cross-institutional team effort to generate a functional heart valve replacement with the capacity for repair, regeneration, and growth. The team is also working towards a GMP-grade version of their customizable, scalable, and cost-effective manufacturing process that would enable deployment to a large patient population. In addition, the new heart valve would be compatible with minimally invasive procedures to serve both pediatric and adult patients.
NRL researchers at the Vehicle Research Section and Photovoltaic Section are building on the proven concept of autonomous cooperative soaring of unmanned aerial vehicles (UAVs), which enables long endurance flights of unmanned sailplanes that use the power of the Sun.