Is it possible to create new bullet-proof materials? 🤔 engineering
The authors of the study used multi-walled carbon nanotubes and combined them with Kevlar nanofibers to create a new bullet-proof material. Carbon nanotubes were used in the study as they have demonstrated impact absorbing properties in earlier research.
“Nano-fibrous materials are very attractive for protective applications because nanoscale fibers have outstanding strength, toughness, and stiffness compared to macroscale fibers,” says Ramathasan Thevamaran a UW–Madison assistant professor of engineering physics, who led the research. “Carbon nanotube mats have shown the best energy absorption so far, and we wanted to see if we could further improve their performance.
Upon finding out about the absorption properties of carbon nanotubes, the team of scientists turned to chemistry. Incorporating the right ratio of Kevlar nanofibers and “nanofiber mats” made up of carbon nanotubes they have managed to produce hydrogen bonds between fibers, which resulted in a dramatic leap in performance.
The new material was tested with a microprojectile impact testing system, which launches micro bullets at varying speeds at materials. The test results showed that the new material is more protective against high-speed impacts than Kevlar or steel plates. The researchers estimate that the material has the potential to allow spacecraft to absorb impacts from
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