Bulletin of the American Physical Society
2006 APS March Meeting
Monday–Friday, March 13–17, 2006; Baltimore, MD
Session R33: Focus Session: Friction, Fracture and Deformation IV
2:30 PM–4:54 PM,
Wednesday, March 15, 2006
Baltimore Convention Center Room: 336
Sponsoring Units: DMP GSNP
Chair: Stefan Koehler, Emory University
Abstract ID: BAPS.2006.MAR.R33.2
Abstract: R33.00002 : Sub-micron void structure during spallation fracture*
3:06 PM–3:18 PM
Preview Abstract Abstract
(Lawrence Livermore National Laboratory)
(Advanced Photon Source)
(National Institute of Standards and Technology)
Samples of single and poly-crystal aluminum were shocked to incipient spallation fracture and recovered on the LLNL light gas gun. Previously, we analyzed the void structure in these samples using 3D x-ray tomography. Here, we extend this analysis to sub-micron length scales using ultra-small-angle scattering (USAXS and USANS). The USANS data overlaps in length-scale with the tomography data. The data displays novel power law scaling and a Guinier region suggesting a mean size for sub-micron voids of 60nm. These results will be compared to direct numerical simulation using molecular dynamics.
*Work performed under the auspices of the U.S. DOE by University of California, LLNL under Contract W-7405-Eng-48, at APS under Contract No. W-31-109-ENG-38.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2006.MAR.R33.2
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