Materials far from equilibrium : shock-induced deformation and chemistry in RDX and experimental development
Name
1054129181-MIT.pdf
Description
Full printable version
Size
45.77 MB
Format
Adobe PDF
Checksum (MD5)
d25cc5012830bf056c854d192760f7a9
Author(s)
Dresselhaus-Cooper, Leora Eve
Advisor(s)
Keith A. Nelson.
Date Issued
2018
Publisher
Massachusetts Institute of Technology
Abstract
The far-from-equilibrium dynamics that occur during shock waves cause irreversible material changes that are difficult to measure by conventional techniques. Measuring shocked materials requires techniques that can measure all of the relevant details (pressure, velocity, crystalline phase, etc.) in a single acquisition, or shot. Over the last century, experimental technique development has led to advances in our understanding of how shock waves change and destroy materials. The basic science of the initial shock-induced deformations can allow controlled and effective weapons design for future engineers, if new single-shot techniques can determine how established explosive materials initiate, propagate and detonate. This work focuses on the shock-induced dynamics in explosive 1,3,5-triaza-1,3,5-trinitrocyclohexane (RDX), using new multiobservables techniques and algorithms developed here and elsewhere. RDX has many known crystal phases and decomposition mechanisms, but how shock waves induce decomposition remains poorly understood. With in-situ single-shot X-ray diffraction experiments, we were able to measure the dynamic phase diagram of RDX for the first time, observing a phase transition from the a to y phase at 4 GPa occurs within
Description
Thesis: Ph. D. in Physical Chemistry, Massachusetts Institute of Technology, Department of Chemistry, 2018.
Cataloged from PDF version of thesis. Page 257 blank.
Includes bibliographical references.
Subjects
Chemistry.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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