The paper presents outcomes of the experimental study of mechanical loading, deformation and fracture of the cylindrical specimens of poly(methyl methacrylate) and fluoropolymer performed with the electric explosion of conductors with various rates of loading. Propagation of the cylindrical waves of mechanical loading through the sample analyzed and correlated with generation and evolution of the fractures. Comparison of main mechanisms of fracture based on the fractographic analysis performed. Leading features of the distortion processes revealed.
We have studied the influence of graphene additives on the initiation of high-energy cobalt salt by a high-current electron beam of nanosecond duration. The high-energy composite was prepared by ultrasonic mixing of 80 wt% cobalt amminate (NCP) and 20 wt % graphene. It is established that the use of graphene as a sensitizing additive in a high-energy composite decreases the necessary energy parameters of the initiating electron beam and increases the energy characteristics and combustion rate of high-energy materials.
The results of experimental studies of the effect of shungite powder additives with particle sizes 30-35 µm on the threshold characteristics of the breakdown voltage in ammonium perchlorate are presented. A comparison of the influence of additives of powder of shungite and graphene. Key words: shungite, ammonium perchlorate, ignition, spark discharge, electric discharge plasma, breakdown voltage.
The paper presents results of the experimental study of the impact of the weak magnetic field in the sensibility of the powder of ammine cobalt perchlorate to the action of the nanosecond-durability high-current electron beam (HCEB). The powder of ammine cobalt perchlorate of two types of dispersity, coarse particles and microparticles, was utilized in our study. We discovered that both weak magnetic field and powder dispersity have a strong impact on the sensibility to the effect of the HCEB.
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