Temporal shock wave analysis produced by copper exploding wires in air at atmospheric pressure

Barbaglia, Mario Oscar; Prieto, G. Rodriguez

doi:10.1063/1.4966140

Cited by 8 publications

(6 citation statements)

References 18 publications

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“…Previous work (see Fig. 3 of Barbaglia and Prieto 18 ) experimentally determined the increase in the outward shock-wave velocity with loading voltage of the capacitor bank. However, for a loading voltage of 25 kV, the dark zone cannot be resolved.…”

Section: Resultsmentioning

confidence: 99%

“…Note the appearance of the shock wave generated by the system, 11,[25][26][27][28][29] which was the subject of previous investigations. 18 Figure 4 shows that the maximum current I max in the system is linear with the initial voltage of the capacitor bank. In the particular case of Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The books by Chace and Moore [15][16][17] are a good introduction to the phenomenology of the problem. Recent investigations 18 studied parametrically the outward shock wave generated during the wire explosion for wire diameters from 50 to 500 lm and for a loading capacitor bank with voltages ranging from 5 to 25 kV. The initial wire stage was studied by Tkachenko et al 19 and Hammer and Sinars 20 among others, whereas the rate of energy deposition was investigated by Sarkisov et al, 21 Sinars et al, 22 and Sahoo et al 23 Finally, Clark et al 24 showed the different types of initial phase behavior in exploding wire experiments.…”

Section: Introductionmentioning

confidence: 99%

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Electrical behavior of exploding copper wire in ambient air

Barbaglia

Prieto

2018

Physics of Plasmas

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This work experimentally investigates the electrical behavior of an exploding wire when the initial energy of the system varies from 28 to 709 J. This experiment uses 50-lm-diameter, 33-mm-long copper wires. The wire is surrounded by air at normal atmospheric pressure and temperature. The experiment monitored the current derivative, voltage between wire ends, total visible radiation emitted, and the shadow image of the wire to study how the electrical parameters vary as a function of initial energy. The results indicate a change in the initial discharge mechanism.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrical behavior of exploding copper wire in ambient air

Barbaglia

Prieto

2018

Physics of Plasmas

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“…However, research on blasts generated by wire explosions in air has paid more attention to dynamic parameters, such as overpressure and expansion trajectory. [50, 51]. The relationships between the wire state and shock wave are rarely considered, not as in the underwater case.…”

Section: Resultsmentioning

confidence: 99%

Experiments on plasma dynamics of electrical wire explosion in air

Han

Yuan

et al. 2022

High Voltage

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Besides a typical high-density plasma source, electrical explosion of conductors is also indispensable in switches, nanomaterial synthesis, shock-wave sources, etc. In this paper, an experimental study regarding plasma dynamics of electrical wire explosions (μstimescale) is presented, with spatiotemporal resolved diagnostics. Pure Cu/Ni wire and Cu-Ni alloy wire were used and compared. The alloy wire usually has a higher resistivity, resulting in a higher initial energy deposition (heating) rate. Abel inverse transformation indicated that the plasma radiation focussed on the outer region of the discharge channel for the alloy wire. In addition, the metallic vapour determined by the material properties had a considerable influence on the plasma process and resulting nanomaterials. In particular, both transverse and axial-layered structures were observed in alloy wire vapour. In addition, for the first time, the expanding arc-like plasma of explosion products was understood and examined from aspects of material properties and energy relaxation. The later stage of wire explosion resembled the state of regular metal vapour arcs under 1 MPa pressure. Finally, the core factor for the fast energy deposition stage of wire explosion was ascertained. Correlations between pre-exposition circuit parameters and post-explosion dynamic effects were found, which is significant for practical applications.

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“…The SWs generated by UEWE under different wire diameter and material were carefully compared in [13] and [14], showing non-refractory material favors the generation of highpeak pressure SW. The influence of the charging voltage on wire explosion was examined in [15][16][17][18]; and no simple linear relationship between the electrical parameter of the discharge (e.g. the charging voltage, peak power, deposited energy, etc) and the SW peak pressure was found.…”

Section: Introductionmentioning

confidence: 99%

Effects of circuit inductance on electrical and shock wave characteristics at underwater wire explosion

Yin¹,

Shi²,

Fan³

et al. 2020

J. Phys. D: Appl. Phys.

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Circuit inductance is an important parameter at underwater electrical wire explosion (UEWE) experiments as it closely relates to the energy deposition rate to the load wire. In this study, the circuit inductance was varied within a wide range from 1.55 μH to 93.2 μH by inserting inductive coils to study its effects on electrical and shock wave (SW) characteristics at UEWE. Experimental results showed that UEWEs using thinner wires were less affected by the increase of circuit inductance and the SW peak pressure several-cm away from the wire is not sensitive to the increase of circuit inductance if properly choosing the diameter of load wire: the maximum SW peak pressure obtained with varied diameter (constant energy storage and wire length) only saw a decrease of 30% as the circuit inductance increased by 60 times from 1.55 μH (0.3 mm diameter, 19 MPa) to 93.2 μH (0.2 mm diameter, 13 MPa). Hydrodynamic calculations were used to explain the experimental results. These results indicated that for a practical UEWE system, the energy storage can be far away from the load while keeping an acceptable loss of the capability of generating strong SWs, which greatly improves the flexibility of system designing for example by enabling much larger energy storage for certain harsh working environments.

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Temporal shock wave analysis produced by copper exploding wires in air at atmospheric pressure

Cited by 8 publications

References 18 publications

Electrical behavior of exploding copper wire in ambient air

Electrical behavior of exploding copper wire in ambient air

Experiments on plasma dynamics of electrical wire explosion in air

Effects of circuit inductance on electrical and shock wave characteristics at underwater wire explosion

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