When I think of pultrusion, I think of a continuous process to produce lineal shapes, such as I-beams or legs for ladders. I think of it as a reverse extrusion process because reinforced fibers are pulled through a resin and into a heated die, where the resin is polymerized. An interesting new German technology called Radius Pultrusion allows the continuous production of curved reinforced profiles from endless fibers and webbing. It was just announced that the process, developed by the Thomas Group of Bremervörde, Germany, has been nominated for the prestigious Hermes technology Award, which will be given at the Hannover Messe, which will be held later this month in Germany.The innovation enables production of endless circles and arches of any radius, for example springs. When using bidirectional reinforcement, the strict orientation of the fibers can only be provided on the level that is vertical to the deflection level. For all other areas, formable webbings, or nettings are required. Thomas says it can be used for structural components of cars, trains or aircraft. Thread rods and nuts are another possibility.
Some of the biggest self-assembled building blocks and structures made from engineered DNA have been developed by researchers at Harvard's Wyss Institute. The largest, a hexagonal prism, is one-tenth the size of an average bacterium.
Arevo Labs' end-production 3D printing technology for carbon composites includes a high-temperature, filament fusion printer head design and firmware for use with the company's new carbon fiber and nanotube reinforced high-temperature matrix polymers like PEEK.
Stratasys will buy Solid Concepts and Harvest Technologies and combine them with its RedEye service business. The plan takes aim at end-production manufacturing and will create one of the biggest commercial 3D printing and AM service bureaus.
The International Federation of Robotics reports that global sales of industrial robots decreased by 4% in 2012 over 2011. The biggest hit was electrical/electronics manufacturing, down by 13%; but by region, the Amerficas did well.
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.