Single and multiple impact ignition of new and aged high explosives in the Steven Impact Test

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Threshold impact velocities for ignition of exothermic reaction were determined for several new and aged HMX-based solid high explosives using three types of projectiles in the Steven Test. Multiple impact threshold velocities were found to be approximately 10% lower in damaged charges that did not react in one or more prior impacts. Projectiles with protrusions that concentrate the friction work in a small volume of explosive reduced the threshold velocities by approximately 30%. Flat projectiles required nearly twice as high velocities for ignition as rounded projectiles. Blast overpressure gauges were used for both pristine and damaged charges to quantitatively measure ... continued below

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Chidester, S K; DePiero, A H; Garza, R G & Tarver, C M June 1, 1999.

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Threshold impact velocities for ignition of exothermic reaction were determined for several new and aged HMX-based solid high explosives using three types of projectiles in the Steven Test. Multiple impact threshold velocities were found to be approximately 10% lower in damaged charges that did not react in one or more prior impacts. Projectiles with protrusions that concentrate the friction work in a small volume of explosive reduced the threshold velocities by approximately 30%. Flat projectiles required nearly twice as high velocities for ignition as rounded projectiles. Blast overpressure gauges were used for both pristine and damaged charges to quantitatively measure reaction violence. Reactive flow calculations of single and multiple impacts with various projectiles suggest that the ignition rates double in damaged charges.

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3.6 Megabytes pages

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  • 11th American Physical Society Topical Conference on Shock Compression of Condensed Matter, Snowbird, UT (US), 06/27/1999--07/02/1999

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  • Report No.: UCRL-JC-234530
  • Report No.: DP0101011
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 14280
  • Archival Resource Key: ark:/67531/metadc623916

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  • June 1, 1999

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  • June 16, 2015, 7:43 a.m.

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  • May 6, 2016, 2:01 p.m.

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Chidester, S K; DePiero, A H; Garza, R G & Tarver, C M. Single and multiple impact ignition of new and aged high explosives in the Steven Impact Test, article, June 1, 1999; California. (digital.library.unt.edu/ark:/67531/metadc623916/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.