| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Compressive Behavior of TATB Grains inside TATB-Based PBX Revealed by In-Situ Neutron Diffraction |
| Yi Tian1, Hong Wang1, Chang-Sheng Zhang1, Qiang Tian1, Wei-Bin Zhang2, Hong-Jia Li1, Jian Li1, Ben-De Liu2, Guang-Ai Sun1, Tai-Ping Peng1, Yao Xu2**, Jian Gong1** |
1Key Laboratory for Neutron Physics of Chinese Academy of Engineering Physics, Institute of Nuclear Physics and Chemistry, Mianyang 621900
2Institute of Chemical Materials, Mianyang 621900
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| Cite this article: |
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Yi Tian, Hong Wang, Chang-Sheng Zhang et al 2017 Chin. Phys. Lett. 34 066101 |
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Abstract We investigate the (002) lattice strain evolution of triaminotrinitrobenzene (TATB) grains inside one TATB-based plastic bonded explosive (PBX) through the in-situ neutron diffraction. By comparing the untreated specimen with the thermal-treated one, it is found that the volume-average response of measured TATB grains remains nearly elastic during quasi-static uniaxial compression. The observed changes in TATB (002) lattice strains correlate tightly with the evolution of damage. A damage parameter defined by the macroscopically determined residual strain is further used to describe the damage degree of PBX, which suggests that the compressive behavior of TATB-based PBX is significantly influenced by the damage evolution.
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Received: 24 February 2017
Published: 23 May 2017
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| PACS: |
61.05.fm
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(Neutron diffraction)
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62.20.-x
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(Mechanical properties of solids)
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81.05.-t
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(Specific materials: fabrication, treatment, testing, and analysis)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 51231002 and 51501170, and the President Foundation of the China Academy of Engineering Physics under Grant No 20141024. |
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