Shear Wave Measurements in Shock-Induced, High-Pressure Phases

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Structural phase transformations under shock loading are of considerable interest for understanding the response of solids under nonhydrostatic stresses and at high strain-rates. Examining shock-induced transformations from continuum level measurements is fundamentally constrained by the inability to directly identify microscopic processes, and also by the limited number of material properties that can be directly measured. ne latter limitation can be reduced by measuring both shear and compression waves using Lagrangian gauges in combined, compression and shear loading. The shear wave serves as an important, real-time probe of the shocked state and unloading response. Using results from a recent study of … continued below

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5 p.

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Aidun, John B. July 1, 1993.

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Description

Structural phase transformations under shock loading are of considerable interest for understanding the response of solids under nonhydrostatic stresses and at high strain-rates. Examining shock-induced transformations from continuum level measurements is fundamentally constrained by the inability to directly identify microscopic processes, and also by the limited number of material properties that can be directly measured. ne latter limitation can be reduced by measuring both shear and compression waves using Lagrangian gauges in combined, compression and shear loading. The shear wave serves as an important, real-time probe of the shocked state and unloading response. Using results from a recent study of CaCO{sub 3}, the unique information obtained from the shear wave speed and the detailed structure of the shear wave are shown to be useful for distinguishing the effects of phase transformations from yielding, as well as in characterizing the high-pressure phases and the yielding process under shock loading.

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5 p.

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OSTI; NTIS; GPO Dep.

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  • 14. international conference on high pressure science and technology and 1993 technical meeting of the topical group on shock compression of condensed matter,Colorado Springs, CO (United States),28 Jun - 3 Jul 1993

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  • Other: DE93016461
  • Report No.: LA-UR--93-2319
  • Report No.: CONF-9306167--9
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 10166120
  • Archival Resource Key: ark:/67531/metadc1341400

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Office of Scientific & Technical Information Technical Reports

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  • July 1, 1993

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  • Nov. 28, 2018, 2:33 p.m.

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  • Dec. 10, 2018, 6:12 p.m.

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Aidun, John B. Shear Wave Measurements in Shock-Induced, High-Pressure Phases, article, July 1, 1993; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1341400/: accessed June 12, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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