Equation of State Measurements of Materials Using a Three-Stage Gun to Impact Velocities of 11km/s

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Understanding high pressure behavior of homogeneous as well as heterogeneous materials is necessary in order to address the physical processes associated with hypervelocity impact events related to space science applications including orbital debris impact and impact lethality. At very high impact velocities, material properties will be subjugated to phase-changes, such as melting and vaporization. These phase states cannot be obtained through conventional gun technology. These processes need to be represented accurately in hydrodynamic codes to allow credible computational analysis of impact events resulting from hypervelocity impact. In this paper, techniques that are being developed and implemented to obtain the needed ... continued below

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13 p.

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REINHART,WILLIAM D.; CHHABILDAS,LALIT C.; CARROLL,DANIEL E.; THORNHILL,T.G. & WINFREE,N.A. September 26, 2000.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Understanding high pressure behavior of homogeneous as well as heterogeneous materials is necessary in order to address the physical processes associated with hypervelocity impact events related to space science applications including orbital debris impact and impact lethality. At very high impact velocities, material properties will be subjugated to phase-changes, such as melting and vaporization. These phase states cannot be obtained through conventional gun technology. These processes need to be represented accurately in hydrodynamic codes to allow credible computational analysis of impact events resulting from hypervelocity impact. In this paper, techniques that are being developed and implemented to obtain the needed shock loading parameters (Hugoniot states) for material characterization studies, namely shock velocity and particle velocity, will be described at impact velocities up to 11 km/s. What is new in this report is that these techniques are being implemented for use at engagement velocities never before attained utilizing two-stage light-gas gun technology.

Physical Description

13 p.

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OSTI as DE00764037

Medium: P; Size: 13 pages

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  • Hypervelocity Impact Symposium, Galveston, TX (US), 11/06/2000--11/10/2000

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  • Report No.: SAND2000-2370C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 764037
  • Archival Resource Key: ark:/67531/metadc722807

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  • September 26, 2000

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 7, 2017, 1:06 p.m.

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REINHART,WILLIAM D.; CHHABILDAS,LALIT C.; CARROLL,DANIEL E.; THORNHILL,T.G. & WINFREE,N.A. Equation of State Measurements of Materials Using a Three-Stage Gun to Impact Velocities of 11km/s, article, September 26, 2000; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc722807/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.