According to foreign media reports,Recently, a research team at Rice University has created a special structure with certain defensive capabilities.It is reported that the team passed3D printingThe technology creates a lattice-like polymer cube. Although it looks “full of holes”, it has actually been proven to be almost as hard as a diamond, and it can effectively block bullets.
It is understood that the starting point of this experimental material is tubulane. This material, first conceived in 1993, is a complex structure composed of cross-linked carbon nanotubes. According to calculations, the structure has incredible strength.Now thanks to3D printingTechnology, besides strength, it also adds some interesting possibilities.
The lead author of the research paper Seyed Mohammad Sajadi said: “There are many theoretical systems that people cannot synthesize. Among them are still unrealistic and elusive. But there are3D printing, We can use the predicted mechanical properties because they are the result of topology rather than size. ”
It is reported that the engineers at Rice University used the theory behind tubulane to create different kinds of blocks through computer simulation software and then use them.3D printingPolymer version to observe its performance.
The performance of these enlarged lattice structures was tested together with solid cubes made of the same polymer material, and the results were encouraging. When the research team fired bullets at these structures at a speed of 5.8 kilometers per second, the results showed that their efficiency in absorbing shocks was 10 times higher than that of ordinary cubes.
“The bullet got stuck in the second layer of the structure,” Sajadi said, “but in the solid square, the crack spreads to the entire structure.”
The research team also performed pressure tests on this material in the laboratory, and the results once again showed the amazing durability of this special structure. It will not crack under heavy pressure, but will collapse on its own and absorb the pressure.
According to Sajadi, the size of the structure inspired by tubulane is only affected by3D printingThe size of the machine is limited, and different versions made of metals, ceramics and polymers can bring a variety of different uses. Now, the team is working hard to further optimize the design so that it can be applied to civil engineering, aerospace, oil and gas production and other fields.
“These3D printingThe impact resistance of the structures makes them unique,” said research paper co-author Peter Boul.
At present, this research paper has been published in “Small“In the journal.
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