“People have been modeling crack growth and fracture for a long time, but the actual process by which it occurs has not really been clear, at least for structural alloys in complicated environments,” said Derek Warner, associate professor of civil and environmental engineering and the paper’s senior author. The team’s paper, “ Dissolution at a Ductile Crack Tip,” published Oct. And by removing atoms from the tip of a crack, the modeling showed the researchers could prevent a crack from propagating, essentially improving the material’s mechanical performance. When it comes to the integrity of structural alloys, a little corrosion may sometimes be a good thing.Ĭornell researchers used advanced atomic modeling to explore the ways environment can influence the growth of cracks in alloys such as aluminum and steel – knowledge that could help engineers better predict, and possibly postpone, the failure of structures.
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