An ultra lightweight concept car from Toyota is making its North American debut this morning at the 2008 Chicago Auto Show. The body frame is made from carbon-fiber reinforced plastic (CFRP), the same material used in the Boeing Dreamliner fuselage and wings. Toyota says the CFRP material “is lighter and stronger than traditional metals, creating a shock-absorbing like structure with cross-sections that help absorb energy during an impact.” Its curb weight of 926 pounds is one-third the weight of the Prius hybrid. Metal is also replaced in the roof of the concept car. The 1/X is made from a bioplastic derived from kenaf and ramie plants. “The result is a roof that improves heat insulation, emits less carbon dioxide, increases the amount of light entering the cabin, and reduces noise,” says the Toyota announcement. Ramie is a fibrous plant native to eastern Asia. This is the first time I’ve heard of it being used in plastics. Kenaf has been under study as reinforcement in plastics for more than a dozen years. Toyota has been a leader in developing biplastics in recent years, but the 1/X announcements leaves many questions unanswered. What is the plastic used in the “bioplastic”? kenaf and ramie are reinforcing and filler media. Is it PLA, a PLA hybrid, or something else? What are the body panels made of? Is CFRP practical as a material of construction in cars, or is this just a great PR model? High cost and tight supplies of CFRP could limit its widespread use in cars. Are there any unique glazing concepts in the 1/X?
Optomec's third America Makes project for metal 3D printing teams the LENS process company with GE Aviation, Lockheed, and other big aerospace names to develop guidelines for repairing high-value flight-critical Air Force components.
A self-propelled robot developed by a team of researchers headed by MIT promises to detect leaks quickly and accurately in gas pipelines, eliminating the likelihood of dangerous explosions. The robot may also be useful in water and petroleum pipe leak detection.
Aerojet Rocketdyne has built and successfully hot-fire tested an entire 3D-printed rocket engine. In other news, NASA's 3D-printed rocket engine injectors survived tests generating a record 20,000 pounds of thrust. Some performed equally well or better than welded parts.
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