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Title: In situ imaging during compression of plastic bonded explosives for damage modeling

Journal Article · · Materials
DOI: https://doi.org/10.3390/ma10060638 · OSTI ID:1369210

Here, the microstructure of plastic bonded explosives (PBXs) is known to influence behavior during mechanical deformation, but characterizing the microstructure can be challenging. For example, the explosive crystals and binder in formulations such as PBX 9501 do not have sufficient X-ray contrast to obtain three-dimensional data by in situ, absorption contrast imaging. To address this difficulty, we have formulated a series of PBXs using octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) crystals and low-density binder systems. The binders were hydroxyl-terminated polybutadiene (HTPB) or glycidyl azide polymer (GAP) cured with a commercial blend of acrylic monomers/oligomers. The binder density is approximately half of the HMX, allowing for excellent contrast using in situ X-ray computed tomography (CT) imaging. The samples were imaged during unaxial compression using micro-scale CT in an interrupted in situ modality. The rigidity of the binder was observed to significantly influence fracture, crystal-binder delamination, and flow. Additionally, 2D slices from the segmented 3D images were meshed for finite element simulation of the mesoscale response. At low stiffness, the binder and crystal do not delaminate and the crystals move with the material flow; at high stiffness, marked delamination is noted between the crystals and the binder, leading to very different mechanical properties. Initial model results exhibit qualitatively similar delamination.

Research Organization:
Los Alamos National Laboratory (LANL)
Sponsoring Organization:
LDRD; USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1369210
Report Number(s):
LA-UR-17-23838
Journal Information:
Materials, Journal Name: Materials Journal Issue: 6 Vol. 10; ISSN 1996-1944; ISSN MATEG9
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

References (61)

Examination of Morphological Changes that Affect Gas Permeation through Thermally Damaged Explosives journal October 2004
Experimental Study of the Oxidative Degradation of PBX 9501 and its Components journal June 2008
Elasticity of Crystalline Molecular Explosives journal April 2015
Computational analysis of temperature rises in microstructures of HMX-Estane PBXs journal October 2012
Experimentally-validated mesoscale modeling of the coupled mechanical–thermal response of AP–HTPB energetic material under dynamic loading journal July 2016
Measure of morphological and performance properties in polymeric silicone foams by X-ray tomography journal October 2012
Internal Deformation Measurement of Polymer Bonded Sugar in Compression by Digital Volume Correlation of In-situ Tomography journal February 2014
Modeling the measured effect of a nitroplasticizer (BDNPA/F) on cookoff of a plastic bonded explosive (PBX 9501) journal November 2016
Experimental and numerical analysis of mode II fracture between propellant and insulation journal July 2014
The cohesive law for the particle/matrix interfaces in high explosives journal August 2005
Quantifying the three-dimensional damage and stress redistribution mechanisms of braided SiC/SiC composites by in situ volumetric digital image correlation journal March 2017
Energy localization in HMX-Estane polymer-bonded explosives during impact loading journal March 2012
Computational analysis of hot-spot formation by quasi-steady deformation waves in porous explosive journal May 2013
Mesoscale evolution of voids and microstructural changes in HMX-based explosives during heating through the β-δ phase transition journal August 2015
Analysis of microstructure-dependent shock dissipation and hot-spot formation in granular metalized explosive journal July 2016
Time–Temperature Analysis, Tension and Compression in PBXs journal October 2012
The Thermal and Microstructural Effect of Plasticizing HMX-Nitrocellulose Composites journal March 2017
A Lagrangian framework for analyzing microstructural level response of polymer-bonded explosives journal June 2011
Quasi–static studies of the deformation and failure of β –HMX based polymer bonded explosives
  • Rae, P. J.; Goldrein, H. T.; Palmer, S. J. P.
  • Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, Vol. 458, Issue 2019 https://doi.org/10.1098/rspa.2001.0894
journal March 2002
High strain rate properties of a polymer-bonded sugar: their dependence on applied and internal constraints journal January 2008
Examination of Morphological Changes that Affect Gas Permeation through Thermally Damaged Explosives journal October 2004
Experimental Study of the Oxidative Degradation of PBX 9501 and its Components journal June 2008
Small-Angle Neutron Scattering and Contrast Variation Measurement of the Interfacial Surface Area in PBX 9501 as a Function of Pressing Intensity journal September 2011
Elasticity of Crystalline Molecular Explosives journal April 2015
Computational analysis of temperature rises in microstructures of HMX-Estane PBXs journal October 2012
Experimentally-validated mesoscale modeling of the coupled mechanical–thermal response of AP–HTPB energetic material under dynamic loading journal July 2016
Measure of morphological and performance properties in polymeric silicone foams by X-ray tomography journal October 2012
In situ X-ray synchrotron tomographic imaging during the compression of hyper-elastic polymeric materials journal September 2015
Internal Deformation Measurement of Polymer Bonded Sugar in Compression by Digital Volume Correlation of In-situ Tomography journal February 2014
Unveiling 3D Deformations in Polymer Composites by Coupled Micro X-Ray Computed Tomography and Volumetric Digital Image Correlation journal February 2016
Combustion of damaged PBX 9501 explosive journal February 2002
Overall behaviour of heterogeneous elastoviscoplastic materials: effect of microstructural modelling journal August 2000
Modeling the measured effect of a nitroplasticizer (BDNPA/F) on cookoff of a plastic bonded explosive (PBX 9501) journal November 2016
Modelling the damage and deformation process in a plastic bonded explosive microstructure under tension using the finite element method journal December 2015
Experimental and numerical analysis of mode II fracture between propellant and insulation journal July 2014
The cohesive law for the particle/matrix interfaces in high explosives journal August 2005
Rotation of hard particles in a soft matrix journal January 2017
Quantifying the three-dimensional damage and stress redistribution mechanisms of braided SiC/SiC composites by in situ volumetric digital image correlation journal March 2017
Combustion of damaged PBX 9501 explosive journal February 2002
Overall behaviour of heterogeneous elastoviscoplastic materials: effect of microstructural modelling journal August 2000
Morphological and Performance Measures of Polyurethane Foams Using X-Ray CT and Mechanical Testing journal May 2014
Morphological and Performance Measures of Polyurethane Foams Using X-Ray CT and Mechanical Testing journal May 2014
Energy localization in HMX-Estane polymer-bonded explosives during impact loading journal March 2012
Ignition criterion for heterogeneous energetic materials based on hotspot size-temperature threshold journal February 2013
Computational analysis of hot-spot formation by quasi-steady deformation waves in porous explosive journal May 2013
Mesoscale evolution of voids and microstructural changes in HMX-based explosives during heating through the β-δ phase transition journal August 2015
Compaction shock dissipation in low density granular explosive journal June 2016
Analysis of microstructure-dependent shock dissipation and hot-spot formation in granular metalized explosive journal July 2016
Characterization of HMX particles in PBX 9501
  • Skidmore, C. B.; Phillips, D. S.; Son, S. F.
  • The tenth American Physical Society topical conference on shock compression of condensed matter, AIP Conference Proceedings https://doi.org/10.1063/1.55666
conference January 1998
Time–Temperature Analysis, Tension and Compression in PBXs journal October 2012
The Thermal and Microstructural Effect of Plasticizing HMX-Nitrocellulose Composites journal March 2017
A Lagrangian framework for analyzing microstructural level response of polymer-bonded explosives journal June 2011
Deformation, Strengths and Strains to Failure of Polymer Bonded Explosives
  • Palmer, S. J. P.; Field, J. E.; Huntley, J. M.
  • Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 440, Issue 1909 https://doi.org/10.1098/rspa.1993.0023
journal February 1993
Quasi–static studies of the deformation and failure of β –HMX based polymer bonded explosives
  • Rae, P. J.; Goldrein, H. T.; Palmer, S. J. P.
  • Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, Vol. 458, Issue 2019 https://doi.org/10.1098/rspa.2001.0894
journal March 2002
High strain rate properties of a polymer-bonded sugar: their dependence on applied and internal constraints journal January 2008
Nanoindentation of explosive polymer composites to simulate deformation and failure journal October 2012
Nanoindentation of explosive polymer composites to simulate deformation and failure journal October 2012
Essential Features of fine Scale Boundary Conditions for Second Gradient Multiscale Homogenization of Statistical Volume Elements journal January 2012
Essential Features of fine Scale Boundary Conditions for Second Gradient Multiscale Homogenization of Statistical Volume Elements journal January 2012
The Thermal and Microstructural Effect of Plasticizing HMX-Nitrocellulose Composites [Supplemental Data] dataset March 2017
The Thermal and Microstructural Effect of Plasticizing HMX-Nitrocellulose Composites [Supplemental Data]
  • Yeager, John; Watkins, Erik; Higginbotham Duque, Amanda
  • figshare-Supplementary information for journal article at DOI: 10.1080/07370652.2017.1301597, 1 AVI file (58.61 MB); 1 PDF file (256.27 kB) https://doi.org/10.6084/m9.figshare.4797892.v1
fileset March 2017

Cited By (4)

Glycidyl Azide Polymer and its Derivatives-Versatile Binders for Explosives and Pyrotechnics: Tutorial Review of Recent Progress journal December 2019
Effect of initial damage variability on hot-spot nucleation in energetic materials journal July 2018
Importance of microstructural features in mechanical response of cast-cured HMX formulations
  • Yeager, John D.; Manner, Virginia W.; Stull, Jamie A.
  • SHOCK COMPRESSION OF CONDENSED MATTER - 2017: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, AIP Conference Proceedings https://doi.org/10.1063/1.5044842
conference January 2018
Glycidyl Azide Polymer and its Derivatives-Versatile Binders for Explosives and Pyrotechnics: Tutorial Review of Recent Progress journal December 2019