In Situ Investigation of Mesoscale Mechanics of Energetic Materials Using X-ray Diffraction.

ORAL

Abstract

Weak impacts on high explosives (HE) can give rise to either violent reactions or harmless fracture and material dispersal. Predicting this response or the state of damage in the material remains an unsolved technical challenge. \textit{In situ} mesoscale insights to anisotropic dislocation-mediated plasticity, phase transitions, and damage are needed to quantify fundamental structure-property relationships, inform theory, and enable high fidelity simulations. Time-resolved, \textit{in situ} X-ray diffraction during dynamic loading, spanning multiple orders of strain rate, using synchrotron (Advanced Photon Source) and X-ray free electron laser (Linac Coherent Light Source) radiation has been performed for single crystal and plastic bonded formulations of cyclotrimethylene trinitramine (RDX). For the first time, diffraction patterns quantify the average lattice response during elastic-plastic and phase transition and allow for direct comparison of experiments and simulations through measured and computed diagnostics.

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Authors

  • Kyle Ramos

    Los Alamos Natl Lab, Los Alamos National Laboratory, LANL

  • Francis Addessio

    Los Alamos National Laboratory

  • Claudine Armenta

    Los Alamos National Laboratory

  • John Barber

    Los Alamos Natl Lab, Los Alamos National Laboratory

  • Cynthia Bolme

    Los Alamos Natl Lab, Los Alamos National Laboratory, LANL

  • Marc Cawkwell

    Los Alamos National Laboratory

  • Arianna Gleason

    Los Alamos National Laboratory, Stanford University, Los Alamos National Laboratory/SLAC, LANL/SLAC, Los Alamos National Laboratory/Stanford University

  • Adam Golder

    Los Alamos National Laboratory

  • Ernest Hartline

    Los Alamos Natl Lab, Los Alamos National Laboratory

  • Brian Jensen

    Los Alamos National Laboratory, Los Alamos Natl Lab, M-9 Shock and Detonation Phsyics Group, Los Alamos National Lab

  • Darby J. Luscher

    Los Alamos National Laboratory

  • Timothy Pierce

    Los Alamos National Laboratory

  • Richard Sandberg

    Los Alamos National Laboratory

  • G. Kenneth Windler

    Los Alamos National Laboratory

  • Christopher Meredith

    Army Research Laboratory, US Army Rsch Lab - Aberdeen

  • Leora Cooper

    MIT, Massachusetts Institute of Technology

  • Nicholas Sinclair

    Washington State University, Dynamic Compression Sector

  • Paulo Rigg

    Washington State University, Dynamic Compression Sector

  • Hae Ja Lee

    SLAC National Accelerator Laboratory, Matter in Extreme Conditions Instrument, SLAC, Stanford Linear Accelerator

  • Inhyuk Nam

    Matter in Extreme Conditions Instrument

  • Matt Seaburg

    Matter in Extreme Conditions Instrument