The composite material designed by Affan Innovative Structures, based on Dow Chemical's Voraforce TF epoxy infusion systems, is being used in non-load-bearing structures. Its high-energy absorbance is important to help reduce damage in the earthquake-prone Middle East. (Source: Affan Innovative Structures)
Ann, social media, at least of the facebook kind, has already gotten old and become a worthless collection of features, as far as I am concerned. Really, it is more like "spewing data" as opposed to sharing information, and very little of communicating insights is done, from what I see. I would not miss it one speck if it were gone some morning.
The various online discussion groups are different by quite a bit, and I enjoy the physics papers weekly publication and discussions as well.
Ah, Chicago still feels warm to me, Cabe. But I know what you mean about steel. I think composites are still a mystery. We don't know yet whether they're going to catch on and we don't know the full range of applications we'll see with composites. It will be interesting.
William, corrosion usually refers to what happens when metal breaks down. Composites can certainly break down, but "corrosion" is not the correct term. They delaminate, fragment, and suffer environmental stress cracking, as we've discussed here: http://www.designnews.com/author.asp?section_id=1392&doc_id=238056 http://www.designnews.com/document.asp?doc_id=236816 http://www.designnews.com/author.asp?section_id=1365&doc_id=238200
Ann, actually, from what I have read, composites do corrode, but differently from metal.
The one other thing is that typically buildings are kept around a lot longer than aircraft or racecars, so that what happens after 30 years of weather matters on a building, while the race car is obsolete and the airplane is probably scrapped, or sold to the minor leagues.
Glad to see the reduction of wood use in architecture. But, I think that is a "no-brainer." A cow in a barn destroyed the wooden version of Chicago. Now, it's all rusty steel. Not a single fire since. Though, the city now has a cold feel to it.
William, I had the same question about damage, but I don't see why the wear problems would be much worse than what aircraft with carbon composite skins experience; in fact, they're probably not nearly as severe, since these buildings aren't speeding through the air and storms of hail, dust, and rain like planes do. Composites, of course, don't corrode like metals do.
A lightweight electric urban concept car designed by several European companies weighs only 992 lb without its battery. It would have weighed 26.7 lb more if its windows were made of glass instead of the specially coated LEXAN polycarbonate resin from SABIC Innovative Plastics.
Skylar Tibbits' team in MIT's Self-Assembly Lab is now 4D printing self-assembling shapes made of programmable carbon composites and custom wood grain. The composites are being used in a sport car airfoil, and the wood grain is beautiful.
The NanoSteel Company has produced high-hardness ferrous metal matrix composite (MMC) parts using a new nanosteel powder in a one-step 3D-printing process. Parts are 99.9% dense, crack-free, and with wear resistance comparable to M2 tool steels.
The company that brought you 3D-printed eyeglasses has launched both an improved clear polymer material for 3D printing optical components and a high-speed, precision, 3D-printing process for making small- and medium-sized batches in a few days.
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