The role and importance of porosity in the deflagration rates of HMX-based materials

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The deflagration behavior of thermally damaged HMX-based materials will be discussed. Strands of material were burned at pressures ranging from 10-300 MPa using the LLNL high pressure strand burner. Strands were heated in-situ and burned while still hot; temperatures range from 90-200 C and were chosen in order to allow for thermal damage of the material without significant decomposition of the HMX. The results indicate that multiple variables affect the burn rate but the most important are the polymorph of HMX and the nature and thermal stability of the non-HE portion of the material. Characterization of the strands indicate that ... continued below

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Glascoe, E A; Hsu, P C & Springer, H K March 15, 2011.

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The deflagration behavior of thermally damaged HMX-based materials will be discussed. Strands of material were burned at pressures ranging from 10-300 MPa using the LLNL high pressure strand burner. Strands were heated in-situ and burned while still hot; temperatures range from 90-200 C and were chosen in order to allow for thermal damage of the material without significant decomposition of the HMX. The results indicate that multiple variables affect the burn rate but the most important are the polymorph of HMX and the nature and thermal stability of the non-HE portion of the material. Characterization of the strands indicate that the thermal soak produces significant porosity and permeability in the sample allowing for significantly faster burning due to the increased surface area and new pathways for flame spread into the material. Specifically, the deflagration rates of heated PBXN-9, LX-10, and PBX-9501 will be discussed and compared.

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PDF-file: 11 pages; size: 0.5 Mbytes

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  • Presented at: JANNAF (26 PSHS), Arlington, VA, United States, Apr 18 - Apr 21, 2011

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  • Report No.: LLNL-PROC-474250
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1029752
  • Archival Resource Key: ark:/67531/metadc830623

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • March 15, 2011

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Dec. 7, 2016, 8:43 p.m.

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Glascoe, E A; Hsu, P C & Springer, H K. The role and importance of porosity in the deflagration rates of HMX-based materials, article, March 15, 2011; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc830623/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.