Defect generation in polymer-bonded explosives exposed to internal gas injection

被引:0
|
作者
Kirby, Levi [1 ]
Sippel, Travis [2 ]
Udaykumar, H. S. [3 ]
Song, Xuan [1 ,3 ]
机构
[1] Univ Iowa, Dept Ind & Syst Engn, Iowa City, IA 52242 USA
[2] Univ Missouri, Dept Mech & Aerosp Engn, Columbia, MO 65201 USA
[3] Univ Iowa, Dept Mech Engn, Iowa City, IA 52242 USA
基金
美国国家科学基金会;
关键词
COMPOSITES; DAMAGE;
D O I
10.1063/5.0172427
中图分类号
O59 [应用物理学];
学科分类号
摘要
Sensitivity in polymer-bonded explosives (PBXs) relies on the presence of defects, such as cracks and voids, which create localized thermal energy, commonly known as hotspots, and initiate reactions through various localization phenomena. Our prior research has explored the use of internal gas pressure induced by thermite ignition to generate localized defects for PBX sensitization. However, further research is required to gain a more comprehensive understanding of the defect generation process resulting from internal gas pressure. This study investigates the process of defect generation in PBXs in response to internally induced gas pressure by applying controlled compressed gas to a fabricated cavity within the materials, simulating the gas pressure emitting from thermite. X-ray micro-computed tomography was employed to visualize the microstructure of the sample before and after gas injection. The experiments reveal the significance of gas pressure, cavity shape, temperature, and specimen compaction pressure in the defect generation. Numerical simulations using Abaqus/Standard were conducted to assess the defect generation in mock PBXs under varying gas pressures, cohesive properties, and binder thicknesses. The simulation results demonstrate the substantial influence of these properties on the ability to generate defects in mock PBXs. This study contributes to a better understanding of the factors influencing defect generation in mock PBXs. This knowledge is crucial for achieving precise control over defect generation, leading to improved ignition and detonation characteristics in PBXs.
引用
收藏
页数:19
相关论文
共 50 条
  • [41] The Effect of RDX Crystal Defect Structure on Mechanical Response of a Polymer-Bonded Explosive
    Bouma, Richard H. B.
    van der Heijden, Antoine E. D. M.
    PROPELLANTS EXPLOSIVES PYROTECHNICS, 2016, 41 (03) : 484 - 493
  • [42] The Development of a Confined Impact Test for Evaluating the Safety of Polymer-Bonded Explosives During Warhead Penetration
    Dai, Xiaogan
    Huang, Qian
    Huang, Fenglei
    Li, Ming
    Wen, Yushi
    Liu, Xuwang
    PROPELLANTS EXPLOSIVES PYROTECHNICS, 2015, 40 (05) : 665 - 673
  • [43] THERMO-ELECTROMECHANICAL RESPONSE OF POLYMER-BONDED EXPLOSIVES FOR STRUCTURAL HEALTH MONITORING OF ENERGETIC MATERIALS
    Rocker, Samantha N.
    Pearrell, T. Wade
    Sengezer, Engin C.
    Seidel, Gary D.
    PROCEEDINGS OF THE ASME CONFERENCE ON SMART MATERIALS, ADAPTIVE STRUCTURES AND INTELLIGENT SYSTEMS, 2017, VOL 1, 2017,
  • [44] Numerical analysis of the damage and failure behavior of polymer-bonded explosives using discrete element method
    Youcai Xiao
    Qiao Zhang
    Chenyang Fan
    Tianyuan Gong
    Yi Sun
    Computational Particle Mechanics, 2024, 11 : 579 - 598
  • [45] Prediction of shock initiation thresholds and ignition probability of polymer-bonded explosives using mesoscale simulations
    Kim, Seokpum
    Wei, Yaochi
    Horie, Yasuyuki
    Zhou, Min
    JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2018, 114 : 97 - 116
  • [46] Deflagration-to-detonation transition in hot HMX and HMX-based polymer-bonded explosives
    Parker, Gary R.
    Heatwole, Eric M.
    Holmes, Matthew D.
    Asay, Blaine W.
    Dickson, Peter M.
    McAfee, John M.
    COMBUSTION AND FLAME, 2020, 215 : 295 - 308
  • [47] Simulation investigations in the binding energy and mechanical properties of HMX-based polymer-bonded explosives
    Xiao, JJ
    Fang, GY
    Li, GF
    Xiao, HM
    CHINESE SCIENCE BULLETIN, 2005, 50 (01): : 21 - 26
  • [48] Investigation Of Crystallisation Conditions to Produce CL-20/HMX Cocrystal for Polymer-bonded Explosives
    Herrmannsdoerfer, Dirk
    Gerber, Peter
    Heintz, Thomas
    Herrmann, Michael J.
    Klapoetke, Thomas M.
    PROPELLANTS EXPLOSIVES PYROTECHNICS, 2019, 44 (06) : 668 - 678
  • [49] Characterising the response of energetic materials and polymer-bonded explosives (PBXs) to high-rate loading
    Proud, W. G.
    Greenaway, M. W.
    Siviour, C. R.
    Czerski, H.
    Field, J. E.
    Porter, D.
    Gould, P.
    Church, P. D.
    Cullis, I. G.
    MULTIFUNCTIONAL ENERGETIC MATERIALS, 2006, 896 : 225 - +
  • [50] Numerical study of countermeasure against thermal stimuli for HMX-based polymer-bonded explosives
    Wang, Guangyu
    Wang, Yushi
    Wen, Quan
    Yan, Li
    JOURNAL OF ENERGETIC MATERIALS, 2018, 36 (04) : 435 - 453