Time-resolved particle velocity measurements at impact velocities of 10 km/s

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Description

Hypervelocity launch capabilities (9--16 km/s) with macroscopic plates have become available in recent years. It is now feasible to conduct instrumented plane-wave tests using this capability. Successfully conducting such tests requires a planar launch and impact at hypervelocities, appropriate triggering for recording systems, and time-resolved measurements of motion or stress at a particular point or set of points within the target or projectile during impact. The authors have conducted the first time-resolved wave-profile experiments using velocity interferometric techniques at impact velocities of 10 km/s. These measurements show that aluminum continues to exhibit normal release behavior to 161 GPa shock pressure, ... continued below

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16 p.

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Furnish, M.D.; Chhabildas, L.C. & Reinhart, W.D. August 1, 1998.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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

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Description

Hypervelocity launch capabilities (9--16 km/s) with macroscopic plates have become available in recent years. It is now feasible to conduct instrumented plane-wave tests using this capability. Successfully conducting such tests requires a planar launch and impact at hypervelocities, appropriate triggering for recording systems, and time-resolved measurements of motion or stress at a particular point or set of points within the target or projectile during impact. The authors have conducted the first time-resolved wave-profile experiments using velocity interferometric techniques at impact velocities of 10 km/s. These measurements show that aluminum continues to exhibit normal release behavior to 161 GPa shock pressure, with complete loss of strength of the shocked state. These experiments have allowed a determination of shock-wave window transparency in conditions produced by a hypervelocity impact. In particular, lithium fluoride appears to lose transparency at a shock stress of 200 GPa; this appears to be the upper limit for conventional wave profile measurements using velocity interferometric techniques.

Physical Description

16 p.

Notes

OSTI as DE98007227

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  • 1998 hypervelocity impact symposium, Huntsville, AL (United States), 16-19 Nov 1998

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  • Other: DE98007227
  • Report No.: SAND--98-0043C
  • Report No.: CONF-981109--
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 663280
  • Archival Resource Key: ark:/67531/metadc707040

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  • August 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 14, 2016, 8:14 p.m.

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Furnish, M.D.; Chhabildas, L.C. & Reinhart, W.D. Time-resolved particle velocity measurements at impact velocities of 10 km/s, article, August 1, 1998; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc707040/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.