Study analyzes the keys to fragmentation of metallic…

Study analyzes the keys to fragmentation of metallic materials

Scientists have analyzed the mechanisms behind the dynamic fragmentation of ductile metallic materials that exhibit large permanent deformations when subjected to severe mechanical loading. Previously, it was thought that dynamic fragmentation was triggered by the inherent defects of the material. What this research suggests is that the key mechanism may not be the porosity of the metallic material, but inertia effects.

One of the authors of the study, Komi Espoir N”Souglo, says, “We have developed a simple analytical model to shed light into the mechanisms which control dynamic fragmentation in porous metals used in the aerospace industry and the civilian-security sector.”

Co-author José Antonio Rodríguez from the Department of Continuum Mechanics and Structural Analysis says, “This work provides a new approach for analyzing and designing structures for which it is important to predict and control the size of the fragments that form when a metallic material fractures under impact loading.” The paper was published in the journal Proceedings of the Royal Society A.

Read more.

Archive link