Experimental Study on the Reaction Zone Distribution of Impact‐Induced Reactive Materials. Issue 8 (19th July 2017)

• Record Type: Journal Article
• Authors: Feng, Shunshan; Wang, Chenglong; Huang, Guangyan
• Is Part Of: Propellants, explosives, pyrotechnics. Volume 42:Issue 8(2017)
• Page Start: 896
• Page End: 905
• Publication Date: 2017-07-19
• Subjects: Impact-induced reactive material -- Highly impact -- Energy release -- Metal-fluoropolymer -- Pressure test; Propellants -- Periodicals; Explosives -- Periodicals; 662.2
• DOI: 10.1002/prep.201600274
• Languages: English
• ISSNs: 0721-3115

Abstract

Abstract: The energy release behaviors of a metal‐fluoropolymer composite impact‐induced reactive material (IRM) under high dynamic impact loading were investigated using a new partition pressure test and the multipoint pressure test. The results indicated that a reverse reaction zone and a subsequent reaction zone were formed along the impact direction as the IRM impacted on an aluminum plate at the velocity of 1050–1450 m s −1 . The total energy release increased with the increase of impact velocity and the energy released from the impact reaction of IRM in the reverse reaction zone was only 20–30 % of the total energy. Most energy release occurred in the subsequent reaction zone, which was composed of an impact decomposition reaction zone, a thermal decomposition reaction zone and a combustion reaction zone. Three IRM including Al/PTFE, Mg/PTFE, and Ti/PTFE were tested. The Ti/PTFE was most sensitive to the impact velocity, but exhibited the lowest energy release rate. The energy release from the impact reaction of Mg/PTFE was mainly due to the combustion reaction. The high energy release of Al/PTFE was mainly from deflagration reaction. This work provides experimental methods and data for the formulation and evaluation of IRM in engineering applications. Abstract :