文献类型：期刊文献

英文题名：Response behavior of the PTFE/Al/W granular composite under different loadings

作者：Xu, F. Y. Wang, H. F. Kang, J. Wang, Q. Y. Yang, X.

通信作者：Xu, FY[1]

机构：[1]Guizhou Inst Technol, Sch Aerosp Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Aerosp Engn, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院;

年份：0

外文期刊名：SHOCK WAVES

收录：;EI(收录号：20242616410963);Scopus(收录号：2-s2.0-85139604480);WOS:【SCI-EXPANDED(收录号:WOS:000865928300001)】；

基金：The work described in this paper was supported by the National Natural Science Foundation of China (Grant No. 11902087), the Start-up Funds for High-level Personnel Research of Guizhou Institute of Technology (No. XJGC20190957), the Engineering Research Centers of Guizhou Ordinary Institution of Higher Education under Grant ([2018]007), and the Creative Research Groups Program of Guizhou Educational Commission under Grant ([2018]026).

语种：英文

外文关键词：Granular composite; Response behavior; Chemical reaction; Mechanical behavior; Impact

摘要：PTFE/Al/W granular composite is a kind of impact-initiated energetic material and may well enhance damage to the impacted targets. To gain insight into response behavior of PTFE/Al/W granular composite under different loadings, the combined approach of experiments and theoretical analyses is used in this paper. More specifically, the combinations of quasi-static compression, dynamic tests, and ballistic impact experiments are conducted. Cylindrical PTFE/Al/W granular composite specimens, with a density of 7.7 g/cm(3) and a diameter of 10mm, are fabricated by cold press molding, sintering, and cooling. Moreover, a high-speed imaging technique is used to record response process of the specimens in ballistic impact experiments. The experimental and analytical results show that the response behavior of PTFE/Al/W granular composite is significantly influenced by the loading strain rate. When the strain rate is less than 3.6x10(3) s(-1), only mechanical response is observed in the quasi-static compression and dynamic tests. However, when the strain rate is higher than 4x10(4) s(-1), the chemical reaction is found in the ballistic impact experiments. Furthermore, chemical response shows an enhanced trend with increasing of the loading strain rate.