NASA-funded research by University of Southern California professors Behrokh Khoshnevis, Madhu Thangavelu, Neil Leach, and Anders Carlson is exploring how structures on the moon can made using the Contour Crafting robot. Under NASA's Innovative Advanced Concepts program, the researchers aim to develop methods for creating infrastructure, such as roads and landing pads, to support human settlement on the moon. The technology can create structures in situ from local materials, which is especially important for long-term, continuously expanding operations on the moon. For example, the team is exploring a nozzle system that heats lunar soil into a cement-like paste. In this visualization by Behnaz Farahi and Connor Wingfield, a lander descends on a pad fabricated by the Contour Crafting robot. (Source: University of Southern California/Contour Crafting)
Jim, thanks for that experimental info. I've read elsewhere that one big inhibitor to date for using AM techniques in aerospace is the lack of resistance of the materials to temperature extremes, especially high temps. OTOH, high-end AM materials are not just for making prototypes anymore--they're increasingly used for low-end aerospace production components, as we've covered here http://www.designnews.com/document.asp?doc_id=236261 But since Stratasys' FDM is being used on test parts for Mars rovers, NASA must believe it's possible to overcome those limitations. Also, other materials have worked successfully on non-interior aircraft parts, usually processed with various forms of SLS.
The idea of being able to 3D print whole buildings is definitely something that could have huge impact on housing the developing world or even providing respite after disasters like the Japanese earthquake and tsunami and the earthquake in Haiti. I would think it's a fast, reasonably inexpensive way to get shelter up and usable quickly. I hope that this actually can become a reality because the possibilities are pretty unbelievable.
Beth, the Mars project--even if only built on the ground during testing--should give some good data for the intended use of the technology, which the website states is emergency and low-cost shelters and/or permanent housing, ads well as commercial buildings. It will be interesting to see the results.
Shades of Star Trek and the ever present replicators, that usually produced food ready to eat. I do have some concerns about where the feed material, with it's fairly demanding characteristics, comes from. Of course, native soil on the moon and on Mars may have properties that make it suitable for the process, but they might not. And draqgging along the raw materials will be as heavy as bringing finished parts. MY other concern is about where the energy to fuse the powder into objects will come from. Deveoping enough heat to fuse materials does take a fair amount of heat.and that power needs to come from some place. So the additive manufacturing machine in space has some real challenges ahead for it. On earth, of course, the situation is totally different, except the question of where the materials come from is still to be answered. Possibly some version that uses course feedstock will be invented.
Just in time for Earth Day, chemicals leader Bayer MaterialScience reported from the UTECH Europe 2015 polyurethane show on programs and applications using its materials to help reduce energy usage. The company also gave an update on its CO2-based PU as that eco-friendly material comes closer to production.
A slew of announcements about new materials and design concepts for transportation have come out of several trade shows focusing on plastics, aircraft interiors, heavy trucks, and automotive engineering. A few more announcements have come independent of any trade shows, maybe just because it's spring.
At the JEC Europe 2015 composites show in Paris last month, makers of composite materials, software, and process equipment showed off their latest innovations. This year's show saw some announcements related to automotive applications, but many of the improvements came in the world of aerospace.
The DuPont-sponsored Plastics Industry Trends survey shows engineers want improved performance in a broad range of plastics and better recycling technology. These concerns top even processing enhancements that improve productivity.
Plastics leader SABIC recently announced a global initiative to help its customers take advantage of additive manufacturing (AM) and also advance 3D printing (3DP) technologies in several application areas. The company's plans go way beyond materials, and also include design, processing, and part performance.
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