Supersteel modeled after human bone. Free Technical Library News

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Supersteel modeled after human bone

14.03.2017

An international team of scientists from the University of Kyushu (Japan), the Max Planck Institute (Germany) and the Massachusetts Institute of Technology have developed supersteel. They took a human bone as a sample - it is light, strong and resistant to cracking due to its hierarchically organized structure. As a result, the new material does not experience a phenomenon known as metal fatigue for longer. The developers presented their results in an article in the journal Science.

Human bones have a complex structure - at the nanoscale, tiny collagen fibers are organized roughly like a laminate, i.e. with different layers of fibers oriented in different directions. At the micro level, the bone has a lattice structure and specially arranged voids, due to which the bone becomes light and strong at the same time.

The new supersteel has a similar structure at the nanoscale. In addition to the layers, which help to limit the propagation of already existing cracks to the layer in which they originated, various alloys with different strengths are used in the material. Thanks to this device, the resulting cracks spread each in their own way, which helps prevent its growth. In addition, because some areas are more flexible than others, the energy of repeated loads is absorbed and can sometimes close the resulting microcrack.

Because of all this, the new steel is much more resistant to metal fatigue, which will allow it to be used to create many structures - for example, bridges and spacecraft - less prone to unexpected destruction.

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The RPB-1600 series is manufactured in a "regular" version with the ability to connect up to 3 pcs in parallel (up to 4800 W), and the RCB-1600 series is installed in a 19" Rack with the possibility of connecting up to 5 pcs in parallel in one module (up to 8000 W). The RCB-1600 series contains built-in OR-ing transistors, which allow hot-plugging of individual blocks in the system.

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