Entries for the ‘Materials’ Category



Hydrogen Causes Metal to Break, so…

A researcher installs an enviromental chamber in the special laboratory in which metals' susceptibility to stress corrosion can be tested. (Credit: Fraunhofer IWM) ScienceDaily (Aug. 21, 2010) — Ask people to think of the ultimate future car, and their answer is often K.I.T.T. — the legendary talking supercar from the US television series "Knight Rider." [...]

Silicon Can Be Made to Melt in Reverse

A tiny silicon chip — the glowing orange square at the center of this special heating device — is heated to a temperature well below silicon's melting point, and then very slowly cooled down. The chip inside this heating device was placed in the path of a synchrotron beam to probe its changes at a [...]

New ‘Green’ Technologies Make Die Castings Stronger

ScienceDaily (Apr. 20, 2010) — Conventional die castings can be made stronger using new, more environmentally friendly technologies developed by CSIRO. Test castings made using a conventional runner on left and the narrow, metal-saving ATM runner on the right. (Credit: Mark Fergus) The two new technologies — a dynamic gating system and the 'ATM runner [...]

Made Easy With Light: How Lasers Can Make Manufacturing Structures out of Fiber-Reinforced Thermoplastics Efficient

Components made of fiber-reinforced straps are bonded with Laser. (Credit: Copyright Fraunhofer IPT) ScienceDaily (Mar. 28, 2010) — Lightweight, sturdy, and non-corrosive: fiber-reinforced thermoplastics are an ideal material for making boats and cars, and for aerospace engineering . But up to now, processing the raw materials was considered laborious and costly. At the JEC Composites [...]

Compliant Systems: Flexible Yet Strong Materials Allow Aircraft Wings to Flex With Air Flow

An adaptive wing support structure can be constructed using compliant systems. It can be molded in one piece. (Credit: Image courtesy of Empa) ScienceDaily (Mar. 14, 2010) — Those who witnessed the first takeoff of an Airbus A380 Superjumbo from Zurich airport at the end of January know that elegant is not the right word [...]

Water Practically Flies Off ‘Near Perfect’ Hydrophobic Surface That Refuses to Get Wet

Engineers have achieved what they call a "nearly perfect hydrophobic interface" by reproducing, on small bits of flat plastic, the shape and patterns of the minute hairs that grow on the bodies of spiders. (Credit: Image courtesy of University of Florida) ScienceDaily (Mar. 6, 2010) — Engineering researchers have crafted a flat surface that refuses [...]

Quantum Physics Breakthrough: Scientists Find an Equation for Materials Innovation

Professor Emily Carter and graduate student Chen Huang developed a new way of predicting important properties of substances. The advance could speed the development of new materials and technologies. (Credit: Frank Wojciechowski) ScienceDaily (Feb. 26, 2010) — Princeton engineers have made a breakthrough in an 80-year-old quandary in quantum physics, paving the way for the [...]

Gold and Silver Nanowires Bond Naturally, Stay Strong

ScienceDaily (Feb. 22, 2010) — Welding uses heat to join pieces of metal in everything from circuits to skyscrapers. But Rice University researchers have found a way to beat the heat on the nanoscale. Two gold nanowires weld when their tips touch. (Credit: Jun Lou/Rice University) Jun Lou, an assistant professor in mechanical engineering and [...]

Pliable power pack will let gadgets feed on your body

SHEETS of material that produce voltage when flexed could generate power from the motion of the human body. Tapping into kinetic energy (Image: tempurasLightbulb/iStock) 1 more image Previous materials were either too rigid or too inefficient to be practical as pliable power generators. Now two research teams have solved the problem using different approaches. The [...]

Perfectly Shaped Solid Components

The simulation shows the results of cold forging. An optimized tool geometry (bottom) keeps pore density low. (Credit: Copyright Fraunhofer IWM) ScienceDaily (Feb. 11, 2010) — When metals are shaped, the materials they are made of are often damaged in the process. One cause of this is excessive press force, which cracks and perforates the [...]

226 SQL queries done. Page generation took 0.435 seconds. 23.5MB