Bridge and other infrastructure failures have been generating significant headlines in the United States. The German state Hesse has a new idea: plastic composite bridges. Europe’s’ first road bridge made of fiber-reinforced thermoset polymer opened recently, spanning a federal highway north of Frankfurt. The initial cost of the materials is higher, but there are long-term maintenance benefits. The pultruded polymer structure is also less than one-fourth the weight of a pre-stressed concrete superstructure. It’s not a giant bridge – just 89 feet long by 16 feet wide. It weighs 80 metric tons.
Some big problems had to solved, including adhesive bonding of the sections and testing. Materials being evaluated for bridge construction include glass and carbon fibers and matrix polymers of vinyl ester, epoxy and polyester. Officials say the new German bridge, located in the town of Friedberg, is expected to last 50 years without repairs. The bridge is made of FRP polymer glued to steel sections. The bridge was prefabricated and assembled on site in one day.
Ford and Unifi, maker of Repreve, will gather and recycle 2 million plastic bottles at CES and other shows for conversion into the Repreve seat fabric used in the 2012 Focus EV.
Thanks to embedded electronics, medical devices are getting smaller and smarter than ever. Pacemakers and implantable defibrillators are now able to call physicians. MRIs, CT scanners, and ultrasound machines are gaining mobility. And the venerable Band-Aid may soon be able to detect illnesses ranging from fevers to heart arrhythmias. On February 21, join Design News senior editor Charles Murray for a wide-ranging discussion, "Embedded Angles for Medical Products," which will explore the latest developments in medical electronics. The discussion will examine advances in medical device technology and offer an inside look at the embedded electronics behind it.
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