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WSU researchers use 3-D printer to make parts from moon rock
by Staff Writers
Pullman WA (SPX) Dec 03, 2012

File image.

Imagine landing on the moon or Mars, putting rocks through a 3-D printer and making something useful - like a needed wrench or replacement part. "It sounds like science fiction, but now it's really possible," says Amit Bandyopadhyay, professor in the School of Mechanical and Materials Engineering at Washington State University.

Bandyopadhyay and a group of colleagues recently published a paper in Rapid Prototyping Journal demonstrating how to print parts using materials from the moon.

Bandyopadhyay and Susmita Bose, professor in the School of Mechanical and Materials Engineering, are well known researchers in the area of three-dimensional printing, creating bone-like materials for orthopedic implants.

In 2010, researchers from NASA initiated discussion with Bandyopadhyay, asking if their research team might be able to print 3-D objects from moon rock. Because of the tremendous expense of space travel, researchers strive to limit what space ships have to carry. Establishment of a lunar or Martian outpost would require using the materials that are on hand for construction or repairs. That's where the 3-D fabrication technology might come in.

Three-dimensional fabrication technology, also known as additive manufacturing, allows researchers to produce complex three dimensional objects directly from computer-aided design (CAD) models, printing the material layer by layer. In this case, the material is heated using a laser to high temperatures and prints out like melting candle wax to a desired shape.

To test the idea, NASA researchers provided Bandyopadhyay and Bose with 10 pounds of raw lunar regolith simulant, an imitation moon rock that is used for research purposes.

The WSU researchers were concerned about how the moon rock material, which is made of silicon, aluminum, calcium, iron and magnesium oxides, would melt, but they found it behaved similarly to silica. And, they built a few simple shapes.

The researchers are the first to demonstrate the ability to fabricate parts using the moon-like material. They sent their pieces to NASA.

"It doesn't look fantastic, but you can make something out of it," says Bandyopadhyay.

Using additive manufacturing, the material could also be tailored, the researchers say. If you want a stronger building material, for instance, you could perhaps use some moon rock with earth-based additives.

"The advantage of additive manufacturing is that you can control the composition as well as the geometry," says Bose. In the future, the researchers hope to show that the lunar material could be used to do remote repairs.

"It is an exciting science fiction story, but maybe we'll hear about it in the next few years," says Bandyopadhyay. "As long as you can have additive manufacturing set up, you may be able to scoop up and print whatever you want. It's not that far-fetched."


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