Compressive Behavior of TATB Grains inside TATB-Based PBX Revealed by In-Situ Neutron Diffraction

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 m...

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Published inChinese physics letters Vol. 34; no. 6; pp. 75 - 78
Main Author 田懿 王虹 张昌盛 田强 张伟斌 李洪佳 李建 刘本德 孙光爱 彭太平 徐尧 龚建
Format Journal Article
LanguageEnglish
Published 01.06.2017
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Summary: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 bv the damage evolution.
Bibliography:Yi Tian1, Hong Wang1 ,Chang-Sheng Zhang1, Qiang Tian 1 , Wei-Bin Zhang2, Hong-Jia Li1, Jian Li1, Ben-De Liu2, Guang-Ai Sun1, Tai-Ping Peng1, Yao Xu2, Jian Gong1（ 1 Key Laboratory for Neutron Physics of Chinese Academy of Engineering Physics, Institute of Nuclear Physics and Chemistry, Mianyang 621900 2Institute of Chemical Materials, Mianyang 621900）
11-1959/O4
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 bv the damage evolution.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/34/6/066101