Detection of Micro-damages in TATB-based Polymer Bonded Explosive by Nonlinear Ultrasonic Technique

被引：0
|
作者：
Yang Z.-F. [1 ,2 ]
Tian Y. [1 ]
Zhou H.-Q. [1 ]
Zhang W.-B. [1 ]
Li J.-M. [1 ]
Li W.-B. [3 ]
机构：
[1] Institute of Chemical Materials, CAEP, Mianyang
[2] Department of Graduate Students, CAEP, Beijing
[3] Department of Aeronautics, School of Aerospace Engineering, Xiamen University, Xiamen
来源：
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2017年 / 25卷 / 12期
关键词：
Fatigue; Micro-damage; Nonlinear parameters; Polymer bonded explosive(PBX); Ultrasonic testing;
D O I：
10.11943/j.issn.1006-9941.2017.12.001
中图分类号：
学科分类号：
摘要：
Aiming at the problem of initial damage and fatigue damage for polymer bonded explosive (PBX), the nonlinear ultrasonic parameters of two kinds of triamino trintrobenzene(TATB)-based PBX cylindrical specimens with different density formed by compression molding and these specimens in the process of compressive fatigue were tested by self-established nonlinear ultrasonic testing device. The nonlinear ultrasonic testing results were verified by fracture surface analysis and computer tomography (CT) testing. Compared with TATB-based PBX specimens with less initial interfacial micro-damage degree, the nonlinear ultrasonic coefficients of the TATB-based PBX specimens with obvious interfacial damage are obviously higher. There is a certain relevance between the nonlinear ultrasonic coefficient and the initial damage degree of TATB-based PBX. When the microscopic crack is nearly generated in the TATB-based PBX, the nonlinear ultrasonic coefficient increases sharply and reaches maximum, revealing that the nonlinear ultrasonic parameters can monitor the fatigue damage developing process. There is a certain difference in fatigue damage rate and developing process for TATB-based PBX specimens with different initial micro-damage degree. © 2017, Editorial Board of Chinese Journal of Energetic Materials. All right reserved.
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页码：970 / 975
页数：5
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