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      Femtosecond quantification of void evolution during rapid material failure

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          Abstract

          Ultrabright x-rays capture the sequence of material damage accumulation during high strain rate catastrophic failure.

          Abstract

          Understanding high-velocity impact, and the subsequent high strain rate material deformation and potential catastrophic failure, is of critical importance across a range of scientific and engineering disciplines that include astrophysics, materials science, and aerospace engineering. The deformation and failure mechanisms are not thoroughly understood, given the challenges of experimentally quantifying material evolution at extremely short time scales. Here, copper foils are rapidly strained via picosecond laser ablation and probed in situ with femtosecond x-ray free electron (XFEL) pulses. Small-angle x-ray scattering (SAXS) monitors the void distribution evolution, while wide-angle scattering (WAXS) simultaneously determines the strain evolution. The ability to quantifiably characterize the nanoscale during high strain rate failure with ultrafast SAXS, complementing WAXS, represents a broadening in the range of science that can be performed with XFEL. It is shown that ultimate failure occurs via void nucleation, growth, and coalescence, and the data agree well with molecular dynamics simulations.

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          Most cited references58

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          Fast Parallel Algorithms for Short-Range Molecular Dynamics

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            Flash Method of Determining Thermal Diffusivity, Heat Capacity, and Thermal Conductivity

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              Structural stability and lattice defects in copper:Ab initio, tight-binding, and embedded-atom calculations

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                Author and article information

                Journal
                Sci Adv
                Sci Adv
                SciAdv
                advances
                Science Advances
                American Association for the Advancement of Science
                2375-2548
                December 2020
                16 December 2020
                : 6
                : 51
                : eabb4434
                Affiliations
                [1 ]Department of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, FL 33146, USA.
                [2 ]York Plasma Institute, Department of Physics, University of York, Heslington, York YO10 5DD, UK.
                [3 ]Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UK.
                [4 ]Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA.
                [5 ]Aix-Marseille Université, CNRS, CINaM UMR 7325, Campus de Luminy, 13288 Marseille, France.
                [6 ]Department of Materials, Imperial College, South Kensington, London SW7 2AZ, UK.
                [7 ]DMEM, University of Strathclyde, Glasgow G1 1XQ, UK.
                [8 ]SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
                Author notes
                [* ]Corresponding author. Email: jcoakley@ 123456miami.edu
                [†]

                Present address: Los Alamos National Laboratory, Los Alamos, NM 87545, USA.

                Author information
                http://orcid.org/0000-0001-8721-0438
                http://orcid.org/0000-0001-5211-9933
                http://orcid.org/0000-0001-5329-1081
                http://orcid.org/0000-0003-1982-8900
                http://orcid.org/0000-0002-3255-4257
                http://orcid.org/0000-0003-3055-3223
                http://orcid.org/0000-0002-8756-3513
                http://orcid.org/0000-0003-3928-1244
                http://orcid.org/0000-0001-6811-6083
                Article
                abb4434
                10.1126/sciadv.abb4434
                7744076
                33328222
                3ee3aaaa-f561-4d3e-b4dd-7251d69d19e0
                Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).

                This is an open-access article distributed under the terms of the Creative Commons Attribution license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 24 February 2020
                : 02 November 2020
                Funding
                Funded by: doi http://dx.doi.org/10.13039/100000015, U.S. Department of Energy;
                Award ID: DE-AC02-06CH11357
                Funded by: doi http://dx.doi.org/10.13039/100000015, U.S. Department of Energy;
                Award ID: DE-AC02-76SF00515
                Funded by: EPSRC;
                Award ID: EP/P024777/1, EP/L025213/1, EP/K034332/1, EP/M005607/1, EP/J017256/1
                Funded by: LLNS;
                Award ID: B595954
                Categories
                Research Article
                Research Articles
                SciAdv r-articles
                Physics
                Applied Sciences and Engineering
                Physics
                Custom metadata
                Nielsen Marquez

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