水中放電成形における放電特性と衝撃圧力波

概要

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The elecrtohtdraulic forming method makes use of energy generated by implusive high current discharge across electrodes which are usually bridged by an initiating wire. In this inverstigation, the wave forms of this discharging current and discharging votage across electrodes were measured under various spark conditions. The electrical characteristics of the spark gap and the behavior of exploding wires were made clear based on the wave form obtained. In the wave forms of current and voltage, discontinuity points appeared as the phase of exploding wire changed from a solid state to a liquid phase and to a vaper phase. The time when the discontinuity points appeared was closely affected by the spark conditions. The value and the profile of the pressure wave generated by an exploding wire across the spark channel in water were calculated theoretically. These results were in good agreement with theexperiments and could explain the characteristics of the pressure wave.
社団法人日本材料学会の論文
1985-12-15