Influence of temperature on the high-strain-rate mechanical behavior of PBX 9501

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High-strain-rate (2000 s{sup -1}) compression measurements utilizing a specially-designed Split-Hopkinson-Pressure Bar have been obtained as a function of temperature from -55 to +50{degree}C for the plastic-bonded explosive PBX 9501. The PBX 9501 high-strain-rate data was found to exhibit similarities to other energetic, propellant, and polymer-composite materials as a function of strain rate and temperature. The high-rate response of the energetic was found to exhibit increased ultimate compressive fracture strength and elastic loading modulus with decreasing temperature. PBX 9501 exhibited nearly invariant fracture strains of {approximately}1.5 percent as a function of temperature at high-strain rate. The maximum compressive strength of PBX ... continued below

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7 p.

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Gray, G. T., III; Blumenthal, W. R.; Idar, D. J. & Cady, C. M. July 1997.

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High-strain-rate (2000 s{sup -1}) compression measurements utilizing a specially-designed Split-Hopkinson-Pressure Bar have been obtained as a function of temperature from -55 to +50{degree}C for the plastic-bonded explosive PBX 9501. The PBX 9501 high-strain-rate data was found to exhibit similarities to other energetic, propellant, and polymer-composite materials as a function of strain rate and temperature. The high-rate response of the energetic was found to exhibit increased ultimate compressive fracture strength and elastic loading modulus with decreasing temperature. PBX 9501 exhibited nearly invariant fracture strains of {approximately}1.5 percent as a function of temperature at high-strain rate. The maximum compressive strength of PBX 9501 was measured to increase from {approximately}55 MPa at 50{degree}C to 150 MPa at -55{degree}C. Scanning electron microscopic observations of the fracture mode of PBX 9501 deformed at high-strain revealed transgranular cleavage fracture of the HMX crystals.

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7 p.

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OSTI as DE98000621

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  • Meeting of the topical group on shock compression of condensed matter of the American Physical Society, Amherst, MA (United States), 27 Jul - 1 Aug 1997

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  • Other: DE98000621
  • Report No.: LA-UR--97-2894
  • Report No.: CONF-970707--
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/532527 | External Link
  • Office of Scientific & Technical Information Report Number: 626475
  • Archival Resource Key: ark:/67531/metadc694292

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  • July 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 29, 2016, 3:32 p.m.

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Gray, G. T., III; Blumenthal, W. R.; Idar, D. J. & Cady, C. M. Influence of temperature on the high-strain-rate mechanical behavior of PBX 9501, article, July 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc694292/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.