In-Situ X-ray Tomography Observation of Structure Evolution in 1,3,5-Triamino-2,4,6-Trinitrobenzene Based Polymer Bonded Explosive (TATB-PBX) under Thermo-Mechanical Loading.
In-Situ X-ray Tomography Observation of Structure Evolution in 1,3,5-Triamino-2,4,6-Trinitrobenzene Based Polymer Bonded Explosive (TATB-PBX) under Thermo-Mechanical Loading.
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热机械加载下 1,3,5-三氨基-2,4,6-三硝基苯基聚合物粘结炸药 (TATB-PBX) 结构演化的原位 X 射线断层扫描观察
DOI：
10.3390/ma11050732
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发表时间：
2018-05-04
期刊：
影响因子：
--
通讯作者：
Zhang WB
中科院分区：
文献类型：
--
作者：
Yuan ZN;Chen H;Li JM;Dai B;Zhang WB
为了研究1,3,5-三氨基-2,4,6-三硝基苯（TATB）基高聚物粘结炸药在热机械载荷下的断裂行为和结构演化，利用准静态巴西试验在X射线计算机断层扫描系统上进行了原位研究。实验温度设置为-20℃至70℃。通过数字图像处理获得不同温度下裂纹的三维形貌。通过扫描电子显微镜比较各种断裂模式。定义断裂程度和复杂性来定量表征不同类型的断裂。采用分形维数来表征裂纹表面的粗糙度。利用聚合物粘结炸药（PBX）中颗粒的位移场来分析热力加载过程中内部结构的演变。结果发现，随着温度的升高，PBX的脆性降低，断口变得更加曲折，裂纹表面变得更加光滑。在较低温度下，特别是低于粘结剂的玻璃化转变温度时，颗粒之间存在滑移和剪切，颗粒容易发生位移和分散；而在较高温度下，尤其是高于粘合剂的玻璃化转变温度时，颗粒会重组，并且颗粒倾向于合并、分散和减小尺寸，而不是移位。
In order to study the fracture behavior and structure evolution of 1,3,5-Triamino-2,4,6-Trinitrobenzene (TATB)-based polymer bonded explosive in thermal-mechanical loading, in-situ studies were performed on X-ray computed tomography system using quasi-static Brazilian test. The experiment temperature was set from −20 °C to 70 °C. Three-dimensional morphology of cracks at different temperatures was obtained through digital image process. The various fracture modes were compared by scanning electron microscopy. Fracture degree and complexity were defined to quantitatively characterize the different types of fractures. Fractal dimension was used to characterize the roughness of the crack surface. The displacement field of particles in polymer bonded explosive (PBX) was used to analyze the interior structure evolution during the process of thermal-mechanical loading. It was found that the brittleness of PBX reduced, the fracture got more tortuous, and the crack surface got smoother as the temperature rose. At lower temperatures, especially lower than glass transition temperature of binders, there were slipping and shear among particles, and particles tended to displace and disperse; while at higher temperatures, especially above the glass transition temperature of binders, there was reorganization of particles and particles tended to merge, disperse, and reduce sizes, rather than displacing.
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DOI：
10.1016/j.msea.2010.04.014
发表时间：
2010-07-15
影响因子：
6.4
作者：
Horovistiz, Ana Lucia;de Campos, Kamila Amato;de Oliveira Hein, Luis Rogerio
通讯作者：
de Oliveira Hein, Luis Rogerio
影响因子：
3.2
作者：
Barua, A.;Horie, Y.;Zhou, M.
通讯作者：
Zhou, M.
PBX 模拟在热和机械载荷组合作用下的断裂行为
影响因子：
5.1
作者：
Liu, Z. W.;Xie, H. M.;Huang, F. L.
通讯作者：
Huang, F. L.
DOI：
10.1111/j.1151-2916.1989.tb05954.x
发表时间：
1989-01-01
影响因子：
3.9
作者：
MECHOLSKY, JJ;PASSOJA, DE;FEINBERGRINGEL, KS
通讯作者：
FEINBERGRINGEL, KS
影响因子：
5.3
作者：
Tan, H;Liu, C;Geubelle, PH
通讯作者：
Geubelle, PH